/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-22 01:57:04,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-22 01:57:04,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-22 01:57:04,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-22 01:57:04,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-22 01:57:04,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-22 01:57:04,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-22 01:57:04,388 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-05-22 01:57:04,417 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-22 01:57:04,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-22 01:57:04,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-22 01:57:04,418 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-22 01:57:04,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-22 01:57:04,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-22 01:57:04,420 INFO L138 SettingsManager]: * Use SBE=true [2021-05-22 01:57:04,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-22 01:57:04,421 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-22 01:57:04,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-22 01:57:04,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-22 01:57:04,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-22 01:57:04,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-22 01:57:04,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-22 01:57:04,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-22 01:57:04,422 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-22 01:57:04,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-22 01:57:04,422 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-22 01:57:04,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-22 01:57:04,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-22 01:57:04,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-22 01:57:04,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-22 01:57:04,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-22 01:57:04,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-22 01:57:04,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-22 01:57:04,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-22 01:57:04,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-22 01:57:04,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-22 01:57:04,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-22 01:57:04,424 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-22 01:57:04,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-22 01:57:04,424 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-22 01:57:04,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-22 01:57:04,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-22 01:57:04,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-22 01:57:04,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-22 01:57:04,757 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-05-22 01:57:04,758 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-05-22 01:57:04,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl [2021-05-22 01:57:04,759 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl' [2021-05-22 01:57:04,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-22 01:57:04,787 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-22 01:57:04,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-22 01:57:04,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-22 01:57:04,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-22 01:57:04,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:04" (1/1) ... [2021-05-22 01:57:04,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:04" (1/1) ... [2021-05-22 01:57:04,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-22 01:57:04,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-22 01:57:04,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-22 01:57:04,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-22 01:57:04,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:04" (1/1) ... [2021-05-22 01:57:04,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:04" (1/1) ... [2021-05-22 01:57:04,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:04" (1/1) ... [2021-05-22 01:57:04,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:04" (1/1) ... [2021-05-22 01:57:04,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:04" (1/1) ... [2021-05-22 01:57:04,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:04" (1/1) ... [2021-05-22 01:57:04,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:04" (1/1) ... [2021-05-22 01:57:04,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-22 01:57:04,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-22 01:57:04,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-22 01:57:04,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-22 01:57:04,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-22 01:57:04,888 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-05-22 01:57:04,888 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-05-22 01:57:04,889 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-05-22 01:57:04,889 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-05-22 01:57:04,889 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-05-22 01:57:04,889 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-05-22 01:57:04,889 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-05-22 01:57:04,889 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-05-22 01:57:04,889 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-05-22 01:57:04,890 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-05-22 01:57:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-05-22 01:57:04,891 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-05-22 01:57:04,891 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-05-22 01:57:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-05-22 01:57:04,892 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-05-22 01:57:04,892 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-05-22 01:57:04,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-22 01:57:04,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-22 01:57:04,893 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-05-22 01:57:04,893 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-05-22 01:57:04,894 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-05-22 01:57:04,894 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-05-22 01:57:04,895 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-05-22 01:57:04,895 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-05-22 01:57:04,896 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-22 01:57:05,025 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-22 01:57:05,025 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-22 01:57:05,026 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 01:57:05 BoogieIcfgContainer [2021-05-22 01:57:05,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-22 01:57:05,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-22 01:57:05,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-22 01:57:05,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-22 01:57:05,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.05 01:57:04" (1/2) ... [2021-05-22 01:57:05,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ecb2826 and model type example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.05 01:57:05, skipping insertion in model container [2021-05-22 01:57:05,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 01:57:05" (2/2) ... [2021-05-22 01:57:05,033 INFO L111 eAbstractionObserver]: Analyzing ICFG example_7.bpl [2021-05-22 01:57:05,037 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-22 01:57:05,037 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-22 01:57:05,038 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-22 01:57:05,038 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-22 01:57:05,136 INFO L149 ThreadInstanceAdder]: Constructed 49 joinOtherThreadTransitions. [2021-05-22 01:57:05,153 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-22 01:57:05,169 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 01:57:05,169 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 01:57:05,169 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 01:57:05,169 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 01:57:05,170 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 01:57:05,170 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 01:57:05,170 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 01:57:05,170 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 01:57:05,179 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 80 transitions, 342 flow [2021-05-22 01:57:06,815 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 17480 states, 17478 states have (on average 5.213525575008582) internal successors, (91122), 17479 states have internal predecessors, (91122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:06,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 17480 states, 17478 states have (on average 5.213525575008582) internal successors, (91122), 17479 states have internal predecessors, (91122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:06,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:06,971 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:06,972 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:06,972 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:06,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:06,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1940016907, now seen corresponding path program 1 times [2021-05-22 01:57:06,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:06,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57927688] [2021-05-22 01:57:06,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:07,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:07,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57927688] [2021-05-22 01:57:07,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57927688] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:07,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:07,238 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 01:57:07,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954923256] [2021-05-22 01:57:07,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 01:57:07,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:07,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 01:57:07,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:57:07,297 INFO L87 Difference]: Start difference. First operand has 17480 states, 17478 states have (on average 5.213525575008582) internal successors, (91122), 17479 states have internal predecessors, (91122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:07,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:07,579 INFO L93 Difference]: Finished difference Result 14078 states and 71196 transitions. [2021-05-22 01:57:07,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 01:57:07,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:07,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:07,779 INFO L225 Difference]: With dead ends: 14078 [2021-05-22 01:57:07,779 INFO L226 Difference]: Without dead ends: 14076 [2021-05-22 01:57:07,781 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:57:08,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14076 states. [2021-05-22 01:57:08,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14076 to 14076. [2021-05-22 01:57:08,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14076 states, 14075 states have (on average 5.058188277087034) internal successors, (71194), 14075 states have internal predecessors, (71194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:08,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14076 states to 14076 states and 71194 transitions. [2021-05-22 01:57:08,885 INFO L78 Accepts]: Start accepts. Automaton has 14076 states and 71194 transitions. Word has length 29 [2021-05-22 01:57:08,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:08,889 INFO L482 AbstractCegarLoop]: Abstraction has 14076 states and 71194 transitions. [2021-05-22 01:57:08,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:08,889 INFO L276 IsEmpty]: Start isEmpty. Operand 14076 states and 71194 transitions. [2021-05-22 01:57:09,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:09,138 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:09,139 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:09,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-22 01:57:09,140 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:09,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:09,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1468047113, now seen corresponding path program 1 times [2021-05-22 01:57:09,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:09,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534950536] [2021-05-22 01:57:09,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:09,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:09,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534950536] [2021-05-22 01:57:09,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534950536] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:09,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:09,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 01:57:09,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264907174] [2021-05-22 01:57:09,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 01:57:09,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:09,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 01:57:09,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:57:09,201 INFO L87 Difference]: Start difference. First operand 14076 states and 71194 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:09,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:09,422 INFO L93 Difference]: Finished difference Result 10782 states and 53509 transitions. [2021-05-22 01:57:09,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 01:57:09,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:09,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:09,484 INFO L225 Difference]: With dead ends: 10782 [2021-05-22 01:57:09,484 INFO L226 Difference]: Without dead ends: 10782 [2021-05-22 01:57:09,486 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:57:09,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10782 states. [2021-05-22 01:57:10,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10782 to 10782. [2021-05-22 01:57:10,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10782 states, 10781 states have (on average 4.963268713477414) internal successors, (53509), 10781 states have internal predecessors, (53509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:10,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10782 states to 10782 states and 53509 transitions. [2021-05-22 01:57:10,209 INFO L78 Accepts]: Start accepts. Automaton has 10782 states and 53509 transitions. Word has length 29 [2021-05-22 01:57:10,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:10,209 INFO L482 AbstractCegarLoop]: Abstraction has 10782 states and 53509 transitions. [2021-05-22 01:57:10,210 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:10,210 INFO L276 IsEmpty]: Start isEmpty. Operand 10782 states and 53509 transitions. [2021-05-22 01:57:10,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:10,248 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:10,249 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:10,249 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-22 01:57:10,249 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:10,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:10,250 INFO L82 PathProgramCache]: Analyzing trace with hash 703280557, now seen corresponding path program 1 times [2021-05-22 01:57:10,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:10,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386239623] [2021-05-22 01:57:10,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:10,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:10,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:10,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386239623] [2021-05-22 01:57:10,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386239623] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:10,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:10,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 01:57:10,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036930705] [2021-05-22 01:57:10,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 01:57:10,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:10,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 01:57:10,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:57:10,299 INFO L87 Difference]: Start difference. First operand 10782 states and 53509 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:10,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:10,477 INFO L93 Difference]: Finished difference Result 8172 states and 40171 transitions. [2021-05-22 01:57:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 01:57:10,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:10,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:10,517 INFO L225 Difference]: With dead ends: 8172 [2021-05-22 01:57:10,518 INFO L226 Difference]: Without dead ends: 8172 [2021-05-22 01:57:10,518 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:57:10,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8172 states. [2021-05-22 01:57:10,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8172 to 8172. [2021-05-22 01:57:11,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8172 states, 8171 states have (on average 4.91628931587321) internal successors, (40171), 8171 states have internal predecessors, (40171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:11,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8172 states to 8172 states and 40171 transitions. [2021-05-22 01:57:11,055 INFO L78 Accepts]: Start accepts. Automaton has 8172 states and 40171 transitions. Word has length 29 [2021-05-22 01:57:11,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:11,056 INFO L482 AbstractCegarLoop]: Abstraction has 8172 states and 40171 transitions. [2021-05-22 01:57:11,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:11,056 INFO L276 IsEmpty]: Start isEmpty. Operand 8172 states and 40171 transitions. [2021-05-22 01:57:11,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:11,081 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:11,082 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:11,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-22 01:57:11,082 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:11,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:11,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1286160181, now seen corresponding path program 1 times [2021-05-22 01:57:11,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:11,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965272522] [2021-05-22 01:57:11,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:11,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:11,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:11,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965272522] [2021-05-22 01:57:11,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965272522] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:11,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:11,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 01:57:11,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997375664] [2021-05-22 01:57:11,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 01:57:11,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:11,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 01:57:11,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:57:11,103 INFO L87 Difference]: Start difference. First operand 8172 states and 40171 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:11,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:11,167 INFO L93 Difference]: Finished difference Result 6318 states and 30700 transitions. [2021-05-22 01:57:11,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 01:57:11,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:11,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:11,201 INFO L225 Difference]: With dead ends: 6318 [2021-05-22 01:57:11,201 INFO L226 Difference]: Without dead ends: 6318 [2021-05-22 01:57:11,202 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:57:11,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6318 states. [2021-05-22 01:57:11,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6318 to 6318. [2021-05-22 01:57:11,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6318 states, 6317 states have (on average 4.859901852145006) internal successors, (30700), 6317 states have internal predecessors, (30700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:11,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6318 states to 6318 states and 30700 transitions. [2021-05-22 01:57:11,565 INFO L78 Accepts]: Start accepts. Automaton has 6318 states and 30700 transitions. Word has length 29 [2021-05-22 01:57:11,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:11,565 INFO L482 AbstractCegarLoop]: Abstraction has 6318 states and 30700 transitions. [2021-05-22 01:57:11,565 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:11,565 INFO L276 IsEmpty]: Start isEmpty. Operand 6318 states and 30700 transitions. [2021-05-22 01:57:11,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:11,585 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:11,585 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:11,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-22 01:57:11,585 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:11,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:11,586 INFO L82 PathProgramCache]: Analyzing trace with hash -2024742227, now seen corresponding path program 1 times [2021-05-22 01:57:11,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:11,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278668169] [2021-05-22 01:57:11,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:11,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:11,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:11,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278668169] [2021-05-22 01:57:11,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278668169] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:11,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:11,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-22 01:57:11,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996562546] [2021-05-22 01:57:11,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-22 01:57:11,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:11,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-22 01:57:11,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:57:11,608 INFO L87 Difference]: Start difference. First operand 6318 states and 30700 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:11,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:11,744 INFO L93 Difference]: Finished difference Result 5103 states and 24301 transitions. [2021-05-22 01:57:11,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-22 01:57:11,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:11,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:11,812 INFO L225 Difference]: With dead ends: 5103 [2021-05-22 01:57:11,812 INFO L226 Difference]: Without dead ends: 5103 [2021-05-22 01:57:11,813 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-22 01:57:11,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5103 states. [2021-05-22 01:57:12,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5103 to 5103. [2021-05-22 01:57:12,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5103 states, 5102 states have (on average 4.763034104272834) internal successors, (24301), 5102 states have internal predecessors, (24301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5103 states to 5103 states and 24301 transitions. [2021-05-22 01:57:12,080 INFO L78 Accepts]: Start accepts. Automaton has 5103 states and 24301 transitions. Word has length 29 [2021-05-22 01:57:12,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:12,080 INFO L482 AbstractCegarLoop]: Abstraction has 5103 states and 24301 transitions. [2021-05-22 01:57:12,080 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:12,080 INFO L276 IsEmpty]: Start isEmpty. Operand 5103 states and 24301 transitions. [2021-05-22 01:57:12,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:12,093 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:12,093 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:12,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-22 01:57:12,093 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:12,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:12,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1604166743, now seen corresponding path program 1 times [2021-05-22 01:57:12,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:12,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209346713] [2021-05-22 01:57:12,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:12,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:12,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:12,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209346713] [2021-05-22 01:57:12,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209346713] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:12,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:12,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:12,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089230043] [2021-05-22 01:57:12,427 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:12,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:12,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:12,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:12,428 INFO L87 Difference]: Start difference. First operand 5103 states and 24301 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:12,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:12,876 INFO L93 Difference]: Finished difference Result 11675 states and 52105 transitions. [2021-05-22 01:57:12,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:12,877 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:12,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:12,935 INFO L225 Difference]: With dead ends: 11675 [2021-05-22 01:57:12,936 INFO L226 Difference]: Without dead ends: 11260 [2021-05-22 01:57:12,936 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 309.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:13,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11260 states. [2021-05-22 01:57:13,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11260 to 5291. [2021-05-22 01:57:13,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5291 states, 5290 states have (on average 4.75406427221172) internal successors, (25149), 5290 states have internal predecessors, (25149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:13,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5291 states to 5291 states and 25149 transitions. [2021-05-22 01:57:13,311 INFO L78 Accepts]: Start accepts. Automaton has 5291 states and 25149 transitions. Word has length 29 [2021-05-22 01:57:13,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:13,311 INFO L482 AbstractCegarLoop]: Abstraction has 5291 states and 25149 transitions. [2021-05-22 01:57:13,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:13,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5291 states and 25149 transitions. [2021-05-22 01:57:13,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:13,324 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:13,324 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:13,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-22 01:57:13,324 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:13,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:13,325 INFO L82 PathProgramCache]: Analyzing trace with hash 150653865, now seen corresponding path program 2 times [2021-05-22 01:57:13,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:13,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192936405] [2021-05-22 01:57:13,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:13,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:13,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192936405] [2021-05-22 01:57:13,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192936405] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:13,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:13,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:13,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128715489] [2021-05-22 01:57:13,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:13,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:13,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:13,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:13,608 INFO L87 Difference]: Start difference. First operand 5291 states and 25149 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:13,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:13,818 INFO L93 Difference]: Finished difference Result 11802 states and 52584 transitions. [2021-05-22 01:57:13,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:13,819 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:13,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:13,880 INFO L225 Difference]: With dead ends: 11802 [2021-05-22 01:57:13,880 INFO L226 Difference]: Without dead ends: 11180 [2021-05-22 01:57:13,880 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 204.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:14,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11180 states. [2021-05-22 01:57:14,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11180 to 5211. [2021-05-22 01:57:14,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5211 states, 5210 states have (on average 4.757965451055663) internal successors, (24789), 5210 states have internal predecessors, (24789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:14,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5211 states to 5211 states and 24789 transitions. [2021-05-22 01:57:14,228 INFO L78 Accepts]: Start accepts. Automaton has 5211 states and 24789 transitions. Word has length 29 [2021-05-22 01:57:14,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:14,229 INFO L482 AbstractCegarLoop]: Abstraction has 5211 states and 24789 transitions. [2021-05-22 01:57:14,229 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:14,229 INFO L276 IsEmpty]: Start isEmpty. Operand 5211 states and 24789 transitions. [2021-05-22 01:57:14,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:14,241 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:14,241 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:14,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-22 01:57:14,241 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:14,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:14,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1823968599, now seen corresponding path program 3 times [2021-05-22 01:57:14,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:14,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707419450] [2021-05-22 01:57:14,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:14,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:14,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707419450] [2021-05-22 01:57:14,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707419450] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:14,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:14,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:14,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811275880] [2021-05-22 01:57:14,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:14,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:14,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:14,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:14,440 INFO L87 Difference]: Start difference. First operand 5211 states and 24789 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:14,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:14,602 INFO L93 Difference]: Finished difference Result 11578 states and 51663 transitions. [2021-05-22 01:57:14,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:14,602 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:14,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:14,637 INFO L225 Difference]: With dead ends: 11578 [2021-05-22 01:57:14,637 INFO L226 Difference]: Without dead ends: 11163 [2021-05-22 01:57:14,637 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 185.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:14,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11163 states. [2021-05-22 01:57:15,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11163 to 5259. [2021-05-22 01:57:15,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5259 states, 5258 states have (on average 4.7480030429821225) internal successors, (24965), 5258 states have internal predecessors, (24965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:15,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5259 states to 5259 states and 24965 transitions. [2021-05-22 01:57:15,061 INFO L78 Accepts]: Start accepts. Automaton has 5259 states and 24965 transitions. Word has length 29 [2021-05-22 01:57:15,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:15,061 INFO L482 AbstractCegarLoop]: Abstraction has 5259 states and 24965 transitions. [2021-05-22 01:57:15,061 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:15,061 INFO L276 IsEmpty]: Start isEmpty. Operand 5259 states and 24965 transitions. [2021-05-22 01:57:15,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:15,073 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:15,074 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:15,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-22 01:57:15,074 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:15,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:15,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1107305653, now seen corresponding path program 4 times [2021-05-22 01:57:15,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:15,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916684298] [2021-05-22 01:57:15,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:15,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:15,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916684298] [2021-05-22 01:57:15,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916684298] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:15,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:15,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:15,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834920278] [2021-05-22 01:57:15,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:15,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:15,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:15,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:15,318 INFO L87 Difference]: Start difference. First operand 5259 states and 24965 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:15,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:15,516 INFO L93 Difference]: Finished difference Result 11640 states and 51884 transitions. [2021-05-22 01:57:15,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:15,517 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:15,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:15,550 INFO L225 Difference]: With dead ends: 11640 [2021-05-22 01:57:15,550 INFO L226 Difference]: Without dead ends: 11115 [2021-05-22 01:57:15,551 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 200.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:15,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11115 states. [2021-05-22 01:57:15,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11115 to 5211. [2021-05-22 01:57:15,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5211 states, 5210 states have (on average 4.753358925143954) internal successors, (24765), 5210 states have internal predecessors, (24765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:16,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5211 states to 5211 states and 24765 transitions. [2021-05-22 01:57:16,021 INFO L78 Accepts]: Start accepts. Automaton has 5211 states and 24765 transitions. Word has length 29 [2021-05-22 01:57:16,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:16,022 INFO L482 AbstractCegarLoop]: Abstraction has 5211 states and 24765 transitions. [2021-05-22 01:57:16,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:16,022 INFO L276 IsEmpty]: Start isEmpty. Operand 5211 states and 24765 transitions. [2021-05-22 01:57:16,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:16,035 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:16,050 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:16,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-22 01:57:16,050 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:16,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:16,051 INFO L82 PathProgramCache]: Analyzing trace with hash 975919947, now seen corresponding path program 5 times [2021-05-22 01:57:16,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:16,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970998571] [2021-05-22 01:57:16,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:16,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:16,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:16,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970998571] [2021-05-22 01:57:16,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970998571] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:16,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:16,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:16,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427939977] [2021-05-22 01:57:16,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:16,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:16,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:16,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:16,271 INFO L87 Difference]: Start difference. First operand 5211 states and 24765 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:16,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:16,393 INFO L93 Difference]: Finished difference Result 11927 states and 53099 transitions. [2021-05-22 01:57:16,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:16,394 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:16,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:16,429 INFO L225 Difference]: With dead ends: 11927 [2021-05-22 01:57:16,429 INFO L226 Difference]: Without dead ends: 11385 [2021-05-22 01:57:16,429 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:16,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11385 states. [2021-05-22 01:57:16,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11385 to 5354. [2021-05-22 01:57:16,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5354 states, 5353 states have (on average 4.7233327106295535) internal successors, (25284), 5353 states have internal predecessors, (25284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:16,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5354 states to 5354 states and 25284 transitions. [2021-05-22 01:57:16,713 INFO L78 Accepts]: Start accepts. Automaton has 5354 states and 25284 transitions. Word has length 29 [2021-05-22 01:57:16,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:16,713 INFO L482 AbstractCegarLoop]: Abstraction has 5354 states and 25284 transitions. [2021-05-22 01:57:16,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:16,714 INFO L276 IsEmpty]: Start isEmpty. Operand 5354 states and 25284 transitions. [2021-05-22 01:57:16,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:16,725 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:16,725 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:16,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-22 01:57:16,725 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:16,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:16,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1067417047, now seen corresponding path program 6 times [2021-05-22 01:57:16,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:16,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643998754] [2021-05-22 01:57:16,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:16,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:16,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643998754] [2021-05-22 01:57:16,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643998754] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:16,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:16,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:16,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804365351] [2021-05-22 01:57:16,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:16,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:16,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:16,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:16,905 INFO L87 Difference]: Start difference. First operand 5354 states and 25284 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:17,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:17,064 INFO L93 Difference]: Finished difference Result 11862 states and 52730 transitions. [2021-05-22 01:57:17,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:17,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:17,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:17,197 INFO L225 Difference]: With dead ends: 11862 [2021-05-22 01:57:17,197 INFO L226 Difference]: Without dead ends: 11186 [2021-05-22 01:57:17,197 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 184.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:17,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11186 states. [2021-05-22 01:57:17,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11186 to 5155. [2021-05-22 01:57:17,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.759992239037641) internal successors, (24533), 5154 states have internal predecessors, (24533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:17,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24533 transitions. [2021-05-22 01:57:17,473 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24533 transitions. Word has length 29 [2021-05-22 01:57:17,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:17,473 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24533 transitions. [2021-05-22 01:57:17,473 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:17,474 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24533 transitions. [2021-05-22 01:57:17,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:17,483 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:17,483 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:17,483 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-22 01:57:17,483 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:17,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:17,484 INFO L82 PathProgramCache]: Analyzing trace with hash 600707113, now seen corresponding path program 7 times [2021-05-22 01:57:17,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:17,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424117203] [2021-05-22 01:57:17,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:17,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:17,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:17,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424117203] [2021-05-22 01:57:17,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424117203] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:17,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:17,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:17,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045450443] [2021-05-22 01:57:17,680 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:17,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:17,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:17,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:17,681 INFO L87 Difference]: Start difference. First operand 5155 states and 24533 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:17,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:17,818 INFO L93 Difference]: Finished difference Result 11624 states and 51893 transitions. [2021-05-22 01:57:17,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:17,818 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:17,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:17,854 INFO L225 Difference]: With dead ends: 11624 [2021-05-22 01:57:17,854 INFO L226 Difference]: Without dead ends: 11209 [2021-05-22 01:57:17,854 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 195.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:18,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11209 states. [2021-05-22 01:57:18,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11209 to 5275. [2021-05-22 01:57:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5275 states, 5274 states have (on average 4.751042851725446) internal successors, (25057), 5274 states have internal predecessors, (25057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 25057 transitions. [2021-05-22 01:57:18,150 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 25057 transitions. Word has length 29 [2021-05-22 01:57:18,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:18,150 INFO L482 AbstractCegarLoop]: Abstraction has 5275 states and 25057 transitions. [2021-05-22 01:57:18,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:18,150 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 25057 transitions. [2021-05-22 01:57:18,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:18,213 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:18,213 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:18,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-22 01:57:18,214 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:18,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:18,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1939439575, now seen corresponding path program 8 times [2021-05-22 01:57:18,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:18,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678613829] [2021-05-22 01:57:18,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:18,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:18,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678613829] [2021-05-22 01:57:18,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678613829] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:18,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:18,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:18,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051677451] [2021-05-22 01:57:18,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:18,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:18,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:18,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:18,436 INFO L87 Difference]: Start difference. First operand 5275 states and 25057 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:18,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:18,571 INFO L93 Difference]: Finished difference Result 11751 states and 52372 transitions. [2021-05-22 01:57:18,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:18,572 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:18,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:18,600 INFO L225 Difference]: With dead ends: 11751 [2021-05-22 01:57:18,600 INFO L226 Difference]: Without dead ends: 11129 [2021-05-22 01:57:18,600 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 171.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:18,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11129 states. [2021-05-22 01:57:18,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11129 to 5195. [2021-05-22 01:57:18,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.754909510974201) internal successors, (24697), 5194 states have internal predecessors, (24697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:18,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24697 transitions. [2021-05-22 01:57:18,834 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24697 transitions. Word has length 29 [2021-05-22 01:57:18,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:18,834 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24697 transitions. [2021-05-22 01:57:18,835 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:18,835 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24697 transitions. [2021-05-22 01:57:18,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:18,845 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:18,845 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:18,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-22 01:57:18,845 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:18,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:18,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1286796345, now seen corresponding path program 9 times [2021-05-22 01:57:18,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:18,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064810158] [2021-05-22 01:57:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:19,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:19,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064810158] [2021-05-22 01:57:19,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064810158] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:19,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:19,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:19,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151592792] [2021-05-22 01:57:19,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:19,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:19,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:19,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:19,033 INFO L87 Difference]: Start difference. First operand 5195 states and 24697 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:19,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:19,172 INFO L93 Difference]: Finished difference Result 11525 states and 51446 transitions. [2021-05-22 01:57:19,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:19,172 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:19,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:19,199 INFO L225 Difference]: With dead ends: 11525 [2021-05-22 01:57:19,199 INFO L226 Difference]: Without dead ends: 11110 [2021-05-22 01:57:19,200 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 190.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:19,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11110 states. [2021-05-22 01:57:19,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11110 to 5243. [2021-05-22 01:57:19,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 5242 states have (on average 4.744944677603968) internal successors, (24873), 5242 states have internal predecessors, (24873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:19,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 24873 transitions. [2021-05-22 01:57:19,446 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 24873 transitions. Word has length 29 [2021-05-22 01:57:19,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:19,446 INFO L482 AbstractCegarLoop]: Abstraction has 5243 states and 24873 transitions. [2021-05-22 01:57:19,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:19,446 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 24873 transitions. [2021-05-22 01:57:19,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:19,455 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:19,455 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:19,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-22 01:57:19,455 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:19,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:19,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1801477271, now seen corresponding path program 10 times [2021-05-22 01:57:19,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:19,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518825299] [2021-05-22 01:57:19,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:19,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:19,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518825299] [2021-05-22 01:57:19,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518825299] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:19,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:19,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:19,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221766663] [2021-05-22 01:57:19,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:19,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:19,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:19,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:19,654 INFO L87 Difference]: Start difference. First operand 5243 states and 24873 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:19,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:19,818 INFO L93 Difference]: Finished difference Result 11585 states and 51662 transitions. [2021-05-22 01:57:19,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:19,819 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:19,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:19,849 INFO L225 Difference]: With dead ends: 11585 [2021-05-22 01:57:19,849 INFO L226 Difference]: Without dead ends: 11062 [2021-05-22 01:57:19,849 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 185.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:19,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11062 states. [2021-05-22 01:57:20,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11062 to 5195. [2021-05-22 01:57:20,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.750288794763188) internal successors, (24673), 5194 states have internal predecessors, (24673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:20,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24673 transitions. [2021-05-22 01:57:20,108 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24673 transitions. Word has length 29 [2021-05-22 01:57:20,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:20,109 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24673 transitions. [2021-05-22 01:57:20,109 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:20,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24673 transitions. [2021-05-22 01:57:20,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:20,121 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:20,121 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:20,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-22 01:57:20,121 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:20,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:20,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1062648983, now seen corresponding path program 11 times [2021-05-22 01:57:20,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:20,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332670142] [2021-05-22 01:57:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:20,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:20,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:20,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332670142] [2021-05-22 01:57:20,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332670142] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:20,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:20,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:20,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203747150] [2021-05-22 01:57:20,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:20,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:20,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:20,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:20,299 INFO L87 Difference]: Start difference. First operand 5195 states and 24673 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:20,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:20,425 INFO L93 Difference]: Finished difference Result 11841 states and 52767 transitions. [2021-05-22 01:57:20,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:20,425 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:20,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:20,456 INFO L225 Difference]: With dead ends: 11841 [2021-05-22 01:57:20,456 INFO L226 Difference]: Without dead ends: 11299 [2021-05-22 01:57:20,456 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:20,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11299 states. [2021-05-22 01:57:20,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11299 to 5305. [2021-05-22 01:57:20,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5305 states, 5304 states have (on average 4.728129713423831) internal successors, (25078), 5304 states have internal predecessors, (25078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:20,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5305 states to 5305 states and 25078 transitions. [2021-05-22 01:57:20,723 INFO L78 Accepts]: Start accepts. Automaton has 5305 states and 25078 transitions. Word has length 29 [2021-05-22 01:57:20,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:20,723 INFO L482 AbstractCegarLoop]: Abstraction has 5305 states and 25078 transitions. [2021-05-22 01:57:20,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:20,723 INFO L276 IsEmpty]: Start isEmpty. Operand 5305 states and 25078 transitions. [2021-05-22 01:57:20,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:20,732 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:20,732 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:20,733 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-22 01:57:20,733 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:20,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:20,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1803601081, now seen corresponding path program 12 times [2021-05-22 01:57:20,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:20,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826854183] [2021-05-22 01:57:20,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:20,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:20,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:20,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826854183] [2021-05-22 01:57:20,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826854183] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:20,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:20,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:20,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569708746] [2021-05-22 01:57:20,902 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:20,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:20,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:20,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:20,902 INFO L87 Difference]: Start difference. First operand 5305 states and 25078 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:21,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:21,070 INFO L93 Difference]: Finished difference Result 11774 states and 52394 transitions. [2021-05-22 01:57:21,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:21,070 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:21,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:21,101 INFO L225 Difference]: With dead ends: 11774 [2021-05-22 01:57:21,101 INFO L226 Difference]: Without dead ends: 11149 [2021-05-22 01:57:21,101 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 174.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:21,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11149 states. [2021-05-22 01:57:21,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11149 to 5155. [2021-05-22 01:57:21,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.756111757857974) internal successors, (24513), 5154 states have internal predecessors, (24513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:21,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24513 transitions. [2021-05-22 01:57:21,369 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24513 transitions. Word has length 29 [2021-05-22 01:57:21,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:21,369 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24513 transitions. [2021-05-22 01:57:21,370 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:21,370 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24513 transitions. [2021-05-22 01:57:21,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:21,379 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:21,379 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:21,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-22 01:57:21,379 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:21,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:21,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1861698247, now seen corresponding path program 13 times [2021-05-22 01:57:21,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:21,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344444407] [2021-05-22 01:57:21,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:21,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:21,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:21,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344444407] [2021-05-22 01:57:21,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344444407] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:21,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:21,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:21,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315207537] [2021-05-22 01:57:21,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:21,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:21,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:21,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:21,577 INFO L87 Difference]: Start difference. First operand 5155 states and 24513 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:21,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:21,745 INFO L93 Difference]: Finished difference Result 11382 states and 50845 transitions. [2021-05-22 01:57:21,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:21,746 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:21,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:21,784 INFO L225 Difference]: With dead ends: 11382 [2021-05-22 01:57:21,784 INFO L226 Difference]: Without dead ends: 10967 [2021-05-22 01:57:21,786 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 195.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:21,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10967 states. [2021-05-22 01:57:22,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10967 to 5227. [2021-05-22 01:57:22,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5227 states, 5226 states have (on average 4.747990815154994) internal successors, (24813), 5226 states have internal predecessors, (24813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:22,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5227 states to 5227 states and 24813 transitions. [2021-05-22 01:57:22,095 INFO L78 Accepts]: Start accepts. Automaton has 5227 states and 24813 transitions. Word has length 29 [2021-05-22 01:57:22,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:22,095 INFO L482 AbstractCegarLoop]: Abstraction has 5227 states and 24813 transitions. [2021-05-22 01:57:22,095 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:22,095 INFO L276 IsEmpty]: Start isEmpty. Operand 5227 states and 24813 transitions. [2021-05-22 01:57:22,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:22,104 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:22,104 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:22,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-22 01:57:22,104 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:22,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:22,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1716606103, now seen corresponding path program 14 times [2021-05-22 01:57:22,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:22,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671392354] [2021-05-22 01:57:22,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:22,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:22,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:22,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671392354] [2021-05-22 01:57:22,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671392354] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:22,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:22,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:22,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451869445] [2021-05-22 01:57:22,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:22,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:22,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:22,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:22,295 INFO L87 Difference]: Start difference. First operand 5227 states and 24813 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:22,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:22,435 INFO L93 Difference]: Finished difference Result 11444 states and 51066 transitions. [2021-05-22 01:57:22,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:22,436 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:22,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:22,464 INFO L225 Difference]: With dead ends: 11444 [2021-05-22 01:57:22,465 INFO L226 Difference]: Without dead ends: 10919 [2021-05-22 01:57:22,465 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 185.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:22,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10919 states. [2021-05-22 01:57:22,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10919 to 5179. [2021-05-22 01:57:22,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.753379683275396) internal successors, (24613), 5178 states have internal predecessors, (24613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:22,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24613 transitions. [2021-05-22 01:57:22,690 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24613 transitions. Word has length 29 [2021-05-22 01:57:22,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:22,690 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24613 transitions. [2021-05-22 01:57:22,690 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:22,690 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24613 transitions. [2021-05-22 01:57:22,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:22,698 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:22,699 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:22,699 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-22 01:57:22,699 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:22,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:22,699 INFO L82 PathProgramCache]: Analyzing trace with hash 687738537, now seen corresponding path program 15 times [2021-05-22 01:57:22,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:22,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628518590] [2021-05-22 01:57:22,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:22,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:22,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628518590] [2021-05-22 01:57:22,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628518590] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:22,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:22,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:22,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124015158] [2021-05-22 01:57:22,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:22,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:22,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:22,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:22,873 INFO L87 Difference]: Start difference. First operand 5179 states and 24613 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:23,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:23,002 INFO L93 Difference]: Finished difference Result 11380 states and 50816 transitions. [2021-05-22 01:57:23,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:23,003 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:23,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:23,030 INFO L225 Difference]: With dead ends: 11380 [2021-05-22 01:57:23,030 INFO L226 Difference]: Without dead ends: 10965 [2021-05-22 01:57:23,030 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 171.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:23,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10965 states. [2021-05-22 01:57:23,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10965 to 5227. [2021-05-22 01:57:23,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5227 states, 5226 states have (on average 4.743398392652124) internal successors, (24789), 5226 states have internal predecessors, (24789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:23,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5227 states to 5227 states and 24789 transitions. [2021-05-22 01:57:23,258 INFO L78 Accepts]: Start accepts. Automaton has 5227 states and 24789 transitions. Word has length 29 [2021-05-22 01:57:23,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:23,258 INFO L482 AbstractCegarLoop]: Abstraction has 5227 states and 24789 transitions. [2021-05-22 01:57:23,258 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:23,258 INFO L276 IsEmpty]: Start isEmpty. Operand 5227 states and 24789 transitions. [2021-05-22 01:57:23,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:23,267 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:23,267 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:23,267 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-22 01:57:23,268 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:23,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:23,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1717303913, now seen corresponding path program 16 times [2021-05-22 01:57:23,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:23,268 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626014032] [2021-05-22 01:57:23,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:23,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:23,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626014032] [2021-05-22 01:57:23,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626014032] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:23,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:23,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:23,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211181037] [2021-05-22 01:57:23,449 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:23,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:23,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:23,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:23,450 INFO L87 Difference]: Start difference. First operand 5227 states and 24789 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:23,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:23,626 INFO L93 Difference]: Finished difference Result 11440 states and 51032 transitions. [2021-05-22 01:57:23,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:23,627 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:23,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:23,658 INFO L225 Difference]: With dead ends: 11440 [2021-05-22 01:57:23,659 INFO L226 Difference]: Without dead ends: 10917 [2021-05-22 01:57:23,659 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 187.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:23,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10917 states. [2021-05-22 01:57:23,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10917 to 5179. [2021-05-22 01:57:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.748744689069139) internal successors, (24589), 5178 states have internal predecessors, (24589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:23,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24589 transitions. [2021-05-22 01:57:23,925 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24589 transitions. Word has length 29 [2021-05-22 01:57:23,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:23,925 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24589 transitions. [2021-05-22 01:57:23,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:23,925 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24589 transitions. [2021-05-22 01:57:23,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:23,934 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:23,934 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:23,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-22 01:57:23,935 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:23,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:23,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1891230347, now seen corresponding path program 17 times [2021-05-22 01:57:23,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:23,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613332693] [2021-05-22 01:57:23,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:24,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:24,126 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:24,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613332693] [2021-05-22 01:57:24,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613332693] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:24,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:24,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:24,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502470526] [2021-05-22 01:57:24,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:24,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:24,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:24,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:24,128 INFO L87 Difference]: Start difference. First operand 5179 states and 24589 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:24,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:24,299 INFO L93 Difference]: Finished difference Result 11534 states and 51477 transitions. [2021-05-22 01:57:24,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:24,300 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:24,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:24,330 INFO L225 Difference]: With dead ends: 11534 [2021-05-22 01:57:24,330 INFO L226 Difference]: Without dead ends: 11057 [2021-05-22 01:57:24,331 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 194.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:24,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11057 states. [2021-05-22 01:57:24,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11057 to 5257. [2021-05-22 01:57:24,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5256 states have (on average 4.7340182648401825) internal successors, (24882), 5256 states have internal predecessors, (24882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 24882 transitions. [2021-05-22 01:57:24,599 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 24882 transitions. Word has length 29 [2021-05-22 01:57:24,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:24,599 INFO L482 AbstractCegarLoop]: Abstraction has 5257 states and 24882 transitions. [2021-05-22 01:57:24,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:24,599 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 24882 transitions. [2021-05-22 01:57:24,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:24,610 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:24,610 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:24,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-22 01:57:24,610 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:24,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:24,610 INFO L82 PathProgramCache]: Analyzing trace with hash 499085801, now seen corresponding path program 18 times [2021-05-22 01:57:24,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:24,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476899911] [2021-05-22 01:57:24,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:24,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:24,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:24,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476899911] [2021-05-22 01:57:24,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476899911] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:24,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:24,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:24,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133049389] [2021-05-22 01:57:24,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:24,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:24,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:24,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:24,785 INFO L87 Difference]: Start difference. First operand 5257 states and 24882 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:24,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:24,949 INFO L93 Difference]: Finished difference Result 11532 states and 51394 transitions. [2021-05-22 01:57:24,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:24,950 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:24,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:24,986 INFO L225 Difference]: With dead ends: 11532 [2021-05-22 01:57:24,986 INFO L226 Difference]: Without dead ends: 10955 [2021-05-22 01:57:24,986 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 189.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:25,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10955 states. [2021-05-22 01:57:25,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10955 to 5155. [2021-05-22 01:57:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.753783469150175) internal successors, (24501), 5154 states have internal predecessors, (24501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:25,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24501 transitions. [2021-05-22 01:57:25,249 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24501 transitions. Word has length 29 [2021-05-22 01:57:25,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:25,250 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24501 transitions. [2021-05-22 01:57:25,250 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:25,250 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24501 transitions. [2021-05-22 01:57:25,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:25,259 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:25,259 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:25,259 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-22 01:57:25,259 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:25,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:25,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1731554677, now seen corresponding path program 19 times [2021-05-22 01:57:25,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:25,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887630265] [2021-05-22 01:57:25,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:25,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:25,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887630265] [2021-05-22 01:57:25,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887630265] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:25,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:25,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:25,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043447925] [2021-05-22 01:57:25,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:25,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:25,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:25,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:25,413 INFO L87 Difference]: Start difference. First operand 5155 states and 24501 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:25,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:25,539 INFO L93 Difference]: Finished difference Result 12078 states and 53790 transitions. [2021-05-22 01:57:25,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:25,539 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:25,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:25,571 INFO L225 Difference]: With dead ends: 12078 [2021-05-22 01:57:25,571 INFO L226 Difference]: Without dead ends: 11536 [2021-05-22 01:57:25,572 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:25,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11536 states. [2021-05-22 01:57:25,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11536 to 5385. [2021-05-22 01:57:25,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5385 states, 5384 states have (on average 4.720839524517087) internal successors, (25417), 5384 states have internal predecessors, (25417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5385 states to 5385 states and 25417 transitions. [2021-05-22 01:57:25,841 INFO L78 Accepts]: Start accepts. Automaton has 5385 states and 25417 transitions. Word has length 29 [2021-05-22 01:57:25,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:25,841 INFO L482 AbstractCegarLoop]: Abstraction has 5385 states and 25417 transitions. [2021-05-22 01:57:25,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand 5385 states and 25417 transitions. [2021-05-22 01:57:25,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:25,850 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:25,850 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:25,850 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-22 01:57:25,850 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:25,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:25,851 INFO L82 PathProgramCache]: Analyzing trace with hash 520075625, now seen corresponding path program 20 times [2021-05-22 01:57:25,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:25,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336448220] [2021-05-22 01:57:25,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:26,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:26,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:26,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336448220] [2021-05-22 01:57:26,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336448220] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:26,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:26,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:26,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653828646] [2021-05-22 01:57:26,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:26,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:26,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:26,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:26,002 INFO L87 Difference]: Start difference. First operand 5385 states and 25417 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:26,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:26,156 INFO L93 Difference]: Finished difference Result 12013 states and 53421 transitions. [2021-05-22 01:57:26,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:26,156 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:26,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:26,188 INFO L225 Difference]: With dead ends: 12013 [2021-05-22 01:57:26,188 INFO L226 Difference]: Without dead ends: 11393 [2021-05-22 01:57:26,188 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 163.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:26,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11393 states. [2021-05-22 01:57:26,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11393 to 5242. [2021-05-22 01:57:26,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5242 states, 5241 states have (on average 4.737073077656936) internal successors, (24827), 5241 states have internal predecessors, (24827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:26,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5242 states to 5242 states and 24827 transitions. [2021-05-22 01:57:26,452 INFO L78 Accepts]: Start accepts. Automaton has 5242 states and 24827 transitions. Word has length 29 [2021-05-22 01:57:26,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:26,453 INFO L482 AbstractCegarLoop]: Abstraction has 5242 states and 24827 transitions. [2021-05-22 01:57:26,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:26,453 INFO L276 IsEmpty]: Start isEmpty. Operand 5242 states and 24827 transitions. [2021-05-22 01:57:26,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:26,462 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:26,462 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:26,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-22 01:57:26,462 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:26,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:26,462 INFO L82 PathProgramCache]: Analyzing trace with hash 447332969, now seen corresponding path program 21 times [2021-05-22 01:57:26,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:26,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067453178] [2021-05-22 01:57:26,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:26,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:26,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:26,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067453178] [2021-05-22 01:57:26,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067453178] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:26,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:26,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:26,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474278008] [2021-05-22 01:57:26,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:26,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:26,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:26,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:26,626 INFO L87 Difference]: Start difference. First operand 5242 states and 24827 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:26,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:26,745 INFO L93 Difference]: Finished difference Result 12043 states and 53599 transitions. [2021-05-22 01:57:26,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:26,745 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:26,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:26,776 INFO L225 Difference]: With dead ends: 12043 [2021-05-22 01:57:26,776 INFO L226 Difference]: Without dead ends: 11501 [2021-05-22 01:57:26,777 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:26,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11501 states. [2021-05-22 01:57:27,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11501 to 5352. [2021-05-22 01:57:27,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5352 states, 5351 states have (on average 4.71538030274715) internal successors, (25232), 5351 states have internal predecessors, (25232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:27,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5352 states to 5352 states and 25232 transitions. [2021-05-22 01:57:27,039 INFO L78 Accepts]: Start accepts. Automaton has 5352 states and 25232 transitions. Word has length 29 [2021-05-22 01:57:27,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:27,039 INFO L482 AbstractCegarLoop]: Abstraction has 5352 states and 25232 transitions. [2021-05-22 01:57:27,039 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:27,039 INFO L276 IsEmpty]: Start isEmpty. Operand 5352 states and 25232 transitions. [2021-05-22 01:57:27,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:27,050 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:27,050 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:27,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-22 01:57:27,051 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:27,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:27,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1003121257, now seen corresponding path program 22 times [2021-05-22 01:57:27,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:27,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188716984] [2021-05-22 01:57:27,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:27,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:27,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188716984] [2021-05-22 01:57:27,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188716984] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:27,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:27,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:27,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670541397] [2021-05-22 01:57:27,204 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:27,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:27,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:27,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:27,204 INFO L87 Difference]: Start difference. First operand 5352 states and 25232 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:27,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:27,339 INFO L93 Difference]: Finished difference Result 11976 states and 53226 transitions. [2021-05-22 01:57:27,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:27,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:27,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:27,371 INFO L225 Difference]: With dead ends: 11976 [2021-05-22 01:57:27,371 INFO L226 Difference]: Without dead ends: 11391 [2021-05-22 01:57:27,371 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:27,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11391 states. [2021-05-22 01:57:27,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11391 to 5242. [2021-05-22 01:57:27,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5242 states, 5241 states have (on average 4.726578897157031) internal successors, (24772), 5241 states have internal predecessors, (24772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:27,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5242 states to 5242 states and 24772 transitions. [2021-05-22 01:57:27,634 INFO L78 Accepts]: Start accepts. Automaton has 5242 states and 24772 transitions. Word has length 29 [2021-05-22 01:57:27,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:27,634 INFO L482 AbstractCegarLoop]: Abstraction has 5242 states and 24772 transitions. [2021-05-22 01:57:27,634 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:27,634 INFO L276 IsEmpty]: Start isEmpty. Operand 5242 states and 24772 transitions. [2021-05-22 01:57:27,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:27,642 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:27,642 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:27,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-22 01:57:27,643 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:27,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:27,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1429680583, now seen corresponding path program 23 times [2021-05-22 01:57:27,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:27,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514248571] [2021-05-22 01:57:27,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:27,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:27,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:27,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514248571] [2021-05-22 01:57:27,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514248571] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:27,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:27,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:27,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846045993] [2021-05-22 01:57:27,786 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:27,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:27,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:27,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:27,786 INFO L87 Difference]: Start difference. First operand 5242 states and 24772 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:27,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:27,915 INFO L93 Difference]: Finished difference Result 11881 states and 52884 transitions. [2021-05-22 01:57:27,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:27,916 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:27,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:27,948 INFO L225 Difference]: With dead ends: 11881 [2021-05-22 01:57:27,949 INFO L226 Difference]: Without dead ends: 11404 [2021-05-22 01:57:27,949 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:28,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11404 states. [2021-05-22 01:57:28,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11404 to 5320. [2021-05-22 01:57:28,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5320 states, 5319 states have (on average 4.712351945854484) internal successors, (25065), 5319 states have internal predecessors, (25065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:28,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5320 states to 5320 states and 25065 transitions. [2021-05-22 01:57:28,228 INFO L78 Accepts]: Start accepts. Automaton has 5320 states and 25065 transitions. Word has length 29 [2021-05-22 01:57:28,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:28,229 INFO L482 AbstractCegarLoop]: Abstraction has 5320 states and 25065 transitions. [2021-05-22 01:57:28,229 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:28,229 INFO L276 IsEmpty]: Start isEmpty. Operand 5320 states and 25065 transitions. [2021-05-22 01:57:28,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:28,238 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:28,238 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:28,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-22 01:57:28,238 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:28,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:28,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1222872617, now seen corresponding path program 24 times [2021-05-22 01:57:28,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:28,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195550508] [2021-05-22 01:57:28,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:28,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:28,410 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:28,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195550508] [2021-05-22 01:57:28,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195550508] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:28,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:28,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:28,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931066296] [2021-05-22 01:57:28,411 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:28,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:28,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:28,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:28,411 INFO L87 Difference]: Start difference. First operand 5320 states and 25065 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:28,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:28,559 INFO L93 Difference]: Finished difference Result 11879 states and 52801 transitions. [2021-05-22 01:57:28,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:28,560 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:28,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:28,590 INFO L225 Difference]: With dead ends: 11879 [2021-05-22 01:57:28,590 INFO L226 Difference]: Without dead ends: 11203 [2021-05-22 01:57:28,591 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 169.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:28,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11203 states. [2021-05-22 01:57:28,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11203 to 5119. [2021-05-22 01:57:28,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 5118 states have (on average 4.761430246189918) internal successors, (24369), 5118 states have internal predecessors, (24369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:28,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 24369 transitions. [2021-05-22 01:57:28,851 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 24369 transitions. Word has length 29 [2021-05-22 01:57:28,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:28,852 INFO L482 AbstractCegarLoop]: Abstraction has 5119 states and 24369 transitions. [2021-05-22 01:57:28,852 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:28,852 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 24369 transitions. [2021-05-22 01:57:28,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:28,860 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:28,860 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:28,861 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-22 01:57:28,861 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:28,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:28,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1948370635, now seen corresponding path program 25 times [2021-05-22 01:57:28,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:28,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201343889] [2021-05-22 01:57:28,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:29,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:29,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:29,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201343889] [2021-05-22 01:57:29,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201343889] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:29,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:29,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:29,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354346026] [2021-05-22 01:57:29,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:29,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:29,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:29,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:29,019 INFO L87 Difference]: Start difference. First operand 5119 states and 24369 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:29,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:29,167 INFO L93 Difference]: Finished difference Result 11480 states and 51182 transitions. [2021-05-22 01:57:29,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:29,168 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:29,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:29,198 INFO L225 Difference]: With dead ends: 11480 [2021-05-22 01:57:29,198 INFO L226 Difference]: Without dead ends: 11065 [2021-05-22 01:57:29,198 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 167.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:29,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11065 states. [2021-05-22 01:57:29,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11065 to 5279. [2021-05-22 01:57:29,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5279 states, 5278 states have (on average 4.751989389920424) internal successors, (25081), 5278 states have internal predecessors, (25081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5279 states to 5279 states and 25081 transitions. [2021-05-22 01:57:29,459 INFO L78 Accepts]: Start accepts. Automaton has 5279 states and 25081 transitions. Word has length 29 [2021-05-22 01:57:29,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:29,459 INFO L482 AbstractCegarLoop]: Abstraction has 5279 states and 25081 transitions. [2021-05-22 01:57:29,459 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:29,459 INFO L276 IsEmpty]: Start isEmpty. Operand 5279 states and 25081 transitions. [2021-05-22 01:57:29,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:29,467 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:29,467 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:29,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-22 01:57:29,468 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:29,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:29,468 INFO L82 PathProgramCache]: Analyzing trace with hash -591776053, now seen corresponding path program 26 times [2021-05-22 01:57:29,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:29,468 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447091250] [2021-05-22 01:57:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:29,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:29,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:29,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447091250] [2021-05-22 01:57:29,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447091250] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:29,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:29,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:29,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338978242] [2021-05-22 01:57:29,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:29,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:29,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:29,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:29,632 INFO L87 Difference]: Start difference. First operand 5279 states and 25081 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:29,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:29,740 INFO L93 Difference]: Finished difference Result 11607 states and 51661 transitions. [2021-05-22 01:57:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:29,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:29,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:29,769 INFO L225 Difference]: With dead ends: 11607 [2021-05-22 01:57:29,769 INFO L226 Difference]: Without dead ends: 10985 [2021-05-22 01:57:29,770 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:29,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10985 states. [2021-05-22 01:57:30,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10985 to 5199. [2021-05-22 01:57:30,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 4.755867641400538) internal successors, (24721), 5198 states have internal predecessors, (24721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:30,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 24721 transitions. [2021-05-22 01:57:30,025 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 24721 transitions. Word has length 29 [2021-05-22 01:57:30,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:30,026 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 24721 transitions. [2021-05-22 01:57:30,026 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:30,026 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 24721 transitions. [2021-05-22 01:57:30,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:30,034 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:30,034 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:30,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-22 01:57:30,035 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:30,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:30,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1728568779, now seen corresponding path program 27 times [2021-05-22 01:57:30,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:30,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146538589] [2021-05-22 01:57:30,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:30,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:30,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146538589] [2021-05-22 01:57:30,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146538589] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:30,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:30,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:30,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892520535] [2021-05-22 01:57:30,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:30,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:30,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:30,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:30,206 INFO L87 Difference]: Start difference. First operand 5199 states and 24721 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:30,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:30,362 INFO L93 Difference]: Finished difference Result 11383 states and 50740 transitions. [2021-05-22 01:57:30,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:30,363 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:30,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:30,392 INFO L225 Difference]: With dead ends: 11383 [2021-05-22 01:57:30,392 INFO L226 Difference]: Without dead ends: 10968 [2021-05-22 01:57:30,392 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 184.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:30,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10968 states. [2021-05-22 01:57:30,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10968 to 5247. [2021-05-22 01:57:30,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 5246 states have (on average 4.745901639344262) internal successors, (24897), 5246 states have internal predecessors, (24897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:30,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 24897 transitions. [2021-05-22 01:57:30,712 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 24897 transitions. Word has length 29 [2021-05-22 01:57:30,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:30,712 INFO L482 AbstractCegarLoop]: Abstraction has 5247 states and 24897 transitions. [2021-05-22 01:57:30,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:30,713 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 24897 transitions. [2021-05-22 01:57:30,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:30,721 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:30,721 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:30,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-22 01:57:30,721 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:30,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:30,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1849735571, now seen corresponding path program 28 times [2021-05-22 01:57:30,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:30,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694400265] [2021-05-22 01:57:30,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:30,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:30,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:30,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694400265] [2021-05-22 01:57:30,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694400265] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:30,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:30,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:30,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027145814] [2021-05-22 01:57:30,878 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:30,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:30,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:30,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:30,878 INFO L87 Difference]: Start difference. First operand 5247 states and 24897 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:31,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:31,005 INFO L93 Difference]: Finished difference Result 11445 states and 50961 transitions. [2021-05-22 01:57:31,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:31,006 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:31,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:31,033 INFO L225 Difference]: With dead ends: 11445 [2021-05-22 01:57:31,033 INFO L226 Difference]: Without dead ends: 10920 [2021-05-22 01:57:31,033 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 160.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:31,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10920 states. [2021-05-22 01:57:31,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10920 to 5199. [2021-05-22 01:57:31,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 4.751250480954213) internal successors, (24697), 5198 states have internal predecessors, (24697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:31,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 24697 transitions. [2021-05-22 01:57:31,257 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 24697 transitions. Word has length 29 [2021-05-22 01:57:31,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:31,257 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 24697 transitions. [2021-05-22 01:57:31,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:31,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 24697 transitions. [2021-05-22 01:57:31,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:31,265 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:31,265 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:31,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-22 01:57:31,265 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:31,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:31,266 INFO L82 PathProgramCache]: Analyzing trace with hash 233490029, now seen corresponding path program 29 times [2021-05-22 01:57:31,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:31,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916710217] [2021-05-22 01:57:31,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:31,408 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:31,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916710217] [2021-05-22 01:57:31,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916710217] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:31,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:31,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:31,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998196212] [2021-05-22 01:57:31,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:31,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:31,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:31,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:31,409 INFO L87 Difference]: Start difference. First operand 5199 states and 24697 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:31,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:31,531 INFO L93 Difference]: Finished difference Result 11732 states and 52176 transitions. [2021-05-22 01:57:31,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:31,531 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:31,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:31,566 INFO L225 Difference]: With dead ends: 11732 [2021-05-22 01:57:31,567 INFO L226 Difference]: Without dead ends: 11190 [2021-05-22 01:57:31,567 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:31,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11190 states. [2021-05-22 01:57:31,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11190 to 5342. [2021-05-22 01:57:31,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5342 states, 5341 states have (on average 4.72121325594458) internal successors, (25216), 5341 states have internal predecessors, (25216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:31,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 25216 transitions. [2021-05-22 01:57:31,878 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 25216 transitions. Word has length 29 [2021-05-22 01:57:31,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:31,878 INFO L482 AbstractCegarLoop]: Abstraction has 5342 states and 25216 transitions. [2021-05-22 01:57:31,878 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:31,878 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 25216 transitions. [2021-05-22 01:57:31,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:31,887 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:31,887 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:31,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-22 01:57:31,887 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:31,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:31,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1809846965, now seen corresponding path program 30 times [2021-05-22 01:57:31,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:31,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219157338] [2021-05-22 01:57:31,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:32,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:32,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219157338] [2021-05-22 01:57:32,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219157338] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:32,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:32,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:32,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670677178] [2021-05-22 01:57:32,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:32,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:32,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:32,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:32,033 INFO L87 Difference]: Start difference. First operand 5342 states and 25216 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:32,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:32,160 INFO L93 Difference]: Finished difference Result 11667 states and 51807 transitions. [2021-05-22 01:57:32,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:32,160 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:32,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:32,195 INFO L225 Difference]: With dead ends: 11667 [2021-05-22 01:57:32,195 INFO L226 Difference]: Without dead ends: 10991 [2021-05-22 01:57:32,196 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:32,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10991 states. [2021-05-22 01:57:32,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10991 to 5143. [2021-05-22 01:57:32,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.758654220147802) internal successors, (24469), 5142 states have internal predecessors, (24469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:32,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24469 transitions. [2021-05-22 01:57:32,429 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24469 transitions. Word has length 29 [2021-05-22 01:57:32,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:32,430 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24469 transitions. [2021-05-22 01:57:32,430 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:32,430 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24469 transitions. [2021-05-22 01:57:32,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:32,438 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:32,438 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:32,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-22 01:57:32,438 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:32,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:32,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1139837771, now seen corresponding path program 31 times [2021-05-22 01:57:32,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:32,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946521560] [2021-05-22 01:57:32,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:32,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:32,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946521560] [2021-05-22 01:57:32,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946521560] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:32,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:32,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:32,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095847241] [2021-05-22 01:57:32,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:32,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:32,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:32,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:32,601 INFO L87 Difference]: Start difference. First operand 5143 states and 24469 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:32,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:32,713 INFO L93 Difference]: Finished difference Result 11315 states and 50439 transitions. [2021-05-22 01:57:32,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:32,713 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:32,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:32,740 INFO L225 Difference]: With dead ends: 11315 [2021-05-22 01:57:32,740 INFO L226 Difference]: Without dead ends: 10900 [2021-05-22 01:57:32,740 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 165.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:32,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10900 states. [2021-05-22 01:57:32,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10900 to 5255. [2021-05-22 01:57:32,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5255 states, 5254 states have (on average 4.74857251617815) internal successors, (24949), 5254 states have internal predecessors, (24949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:32,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 24949 transitions. [2021-05-22 01:57:32,967 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 24949 transitions. Word has length 29 [2021-05-22 01:57:32,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:32,967 INFO L482 AbstractCegarLoop]: Abstraction has 5255 states and 24949 transitions. [2021-05-22 01:57:32,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:32,967 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 24949 transitions. [2021-05-22 01:57:32,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:32,976 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:32,976 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:32,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-22 01:57:32,976 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:32,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:32,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1400308917, now seen corresponding path program 32 times [2021-05-22 01:57:32,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:32,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603712663] [2021-05-22 01:57:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:33,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:33,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603712663] [2021-05-22 01:57:33,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603712663] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:33,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:33,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:33,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884346218] [2021-05-22 01:57:33,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:33,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:33,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:33,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:33,124 INFO L87 Difference]: Start difference. First operand 5255 states and 24949 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:33,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:33,217 INFO L93 Difference]: Finished difference Result 11442 states and 50918 transitions. [2021-05-22 01:57:33,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:33,217 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:33,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:33,245 INFO L225 Difference]: With dead ends: 11442 [2021-05-22 01:57:33,245 INFO L226 Difference]: Without dead ends: 10820 [2021-05-22 01:57:33,246 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:33,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10820 states. [2021-05-22 01:57:33,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10820 to 5175. [2021-05-22 01:57:33,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 5174 states have (on average 4.753962118283726) internal successors, (24597), 5174 states have internal predecessors, (24597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:33,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 24597 transitions. [2021-05-22 01:57:33,492 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 24597 transitions. Word has length 29 [2021-05-22 01:57:33,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:33,493 INFO L482 AbstractCegarLoop]: Abstraction has 5175 states and 24597 transitions. [2021-05-22 01:57:33,493 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:33,493 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 24597 transitions. [2021-05-22 01:57:33,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:33,501 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:33,501 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:33,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-22 01:57:33,502 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:33,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:33,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1224625769, now seen corresponding path program 33 times [2021-05-22 01:57:33,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:33,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034944409] [2021-05-22 01:57:33,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:33,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:33,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:33,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034944409] [2021-05-22 01:57:33,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034944409] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:33,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:33,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:33,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752638057] [2021-05-22 01:57:33,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:33,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:33,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:33,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:33,642 INFO L87 Difference]: Start difference. First operand 5175 states and 24597 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:33,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:33,757 INFO L93 Difference]: Finished difference Result 11140 states and 49656 transitions. [2021-05-22 01:57:33,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:33,757 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:33,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:33,784 INFO L225 Difference]: With dead ends: 11140 [2021-05-22 01:57:33,784 INFO L226 Difference]: Without dead ends: 10725 [2021-05-22 01:57:33,784 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:33,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10725 states. [2021-05-22 01:57:33,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10725 to 5207. [2021-05-22 01:57:33,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5207 states, 5206 states have (on average 4.746254321936227) internal successors, (24709), 5206 states have internal predecessors, (24709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:34,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5207 states to 5207 states and 24709 transitions. [2021-05-22 01:57:34,010 INFO L78 Accepts]: Start accepts. Automaton has 5207 states and 24709 transitions. Word has length 29 [2021-05-22 01:57:34,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:34,010 INFO L482 AbstractCegarLoop]: Abstraction has 5207 states and 24709 transitions. [2021-05-22 01:57:34,010 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:34,011 INFO L276 IsEmpty]: Start isEmpty. Operand 5207 states and 24709 transitions. [2021-05-22 01:57:34,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:34,022 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:34,022 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:34,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-22 01:57:34,022 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:34,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:34,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1177495225, now seen corresponding path program 34 times [2021-05-22 01:57:34,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:34,023 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94927746] [2021-05-22 01:57:34,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:34,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:34,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:34,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94927746] [2021-05-22 01:57:34,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94927746] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:34,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:34,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:34,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765915859] [2021-05-22 01:57:34,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:34,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:34,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:34,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:34,158 INFO L87 Difference]: Start difference. First operand 5207 states and 24709 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:34,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:34,283 INFO L93 Difference]: Finished difference Result 11140 states and 49624 transitions. [2021-05-22 01:57:34,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:34,284 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:34,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:34,311 INFO L225 Difference]: With dead ends: 11140 [2021-05-22 01:57:34,311 INFO L226 Difference]: Without dead ends: 10693 [2021-05-22 01:57:34,311 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:34,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10693 states. [2021-05-22 01:57:34,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10693 to 5175. [2021-05-22 01:57:34,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 5174 states have (on average 4.750869733281793) internal successors, (24581), 5174 states have internal predecessors, (24581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:34,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 24581 transitions. [2021-05-22 01:57:34,539 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 24581 transitions. Word has length 29 [2021-05-22 01:57:34,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:34,539 INFO L482 AbstractCegarLoop]: Abstraction has 5175 states and 24581 transitions. [2021-05-22 01:57:34,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:34,539 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 24581 transitions. [2021-05-22 01:57:34,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:34,547 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:34,547 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:34,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-22 01:57:34,548 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:34,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:34,548 INFO L82 PathProgramCache]: Analyzing trace with hash -455891675, now seen corresponding path program 35 times [2021-05-22 01:57:34,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:34,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433155749] [2021-05-22 01:57:34,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:34,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:34,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433155749] [2021-05-22 01:57:34,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433155749] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:34,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:34,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:34,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730765644] [2021-05-22 01:57:34,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:34,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:34,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:34,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:34,704 INFO L87 Difference]: Start difference. First operand 5175 states and 24581 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:34,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:34,822 INFO L93 Difference]: Finished difference Result 11442 states and 50918 transitions. [2021-05-22 01:57:34,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:34,823 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:34,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:34,849 INFO L225 Difference]: With dead ends: 11442 [2021-05-22 01:57:34,850 INFO L226 Difference]: Without dead ends: 10900 [2021-05-22 01:57:34,850 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:34,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10900 states. [2021-05-22 01:57:35,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10900 to 5255. [2021-05-22 01:57:35,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5255 states, 5254 states have (on average 4.7333460220784165) internal successors, (24869), 5254 states have internal predecessors, (24869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:35,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 24869 transitions. [2021-05-22 01:57:35,076 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 24869 transitions. Word has length 29 [2021-05-22 01:57:35,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:35,076 INFO L482 AbstractCegarLoop]: Abstraction has 5255 states and 24869 transitions. [2021-05-22 01:57:35,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:35,076 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 24869 transitions. [2021-05-22 01:57:35,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:35,085 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:35,085 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:35,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-22 01:57:35,085 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:35,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:35,085 INFO L82 PathProgramCache]: Analyzing trace with hash -662699641, now seen corresponding path program 36 times [2021-05-22 01:57:35,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:35,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070811495] [2021-05-22 01:57:35,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:35,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:35,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:35,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070811495] [2021-05-22 01:57:35,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070811495] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:35,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:35,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:35,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327750131] [2021-05-22 01:57:35,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:35,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:35,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:35,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:35,218 INFO L87 Difference]: Start difference. First operand 5255 states and 24869 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:35,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:35,320 INFO L93 Difference]: Finished difference Result 11315 states and 50311 transitions. [2021-05-22 01:57:35,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:35,320 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:35,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:35,347 INFO L225 Difference]: With dead ends: 11315 [2021-05-22 01:57:35,348 INFO L226 Difference]: Without dead ends: 10788 [2021-05-22 01:57:35,348 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:35,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10788 states. [2021-05-22 01:57:35,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10788 to 5143. [2021-05-22 01:57:35,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.755542590431738) internal successors, (24453), 5142 states have internal predecessors, (24453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:35,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24453 transitions. [2021-05-22 01:57:35,576 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24453 transitions. Word has length 29 [2021-05-22 01:57:35,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:35,576 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24453 transitions. [2021-05-22 01:57:35,576 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:35,576 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24453 transitions. [2021-05-22 01:57:35,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:35,585 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:35,585 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:35,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-22 01:57:35,585 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:35,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:35,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1884187287, now seen corresponding path program 37 times [2021-05-22 01:57:35,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:35,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952621231] [2021-05-22 01:57:35,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:35,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:35,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:35,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952621231] [2021-05-22 01:57:35,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952621231] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:35,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:35,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:35,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918913249] [2021-05-22 01:57:35,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:35,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:35,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:35,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:35,740 INFO L87 Difference]: Start difference. First operand 5143 states and 24453 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:35,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:35,872 INFO L93 Difference]: Finished difference Result 11073 states and 49395 transitions. [2021-05-22 01:57:35,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:35,872 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:35,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:35,899 INFO L225 Difference]: With dead ends: 11073 [2021-05-22 01:57:35,899 INFO L226 Difference]: Without dead ends: 10658 [2021-05-22 01:57:35,900 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 163.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:36,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10658 states. [2021-05-22 01:57:36,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10658 to 5207. [2021-05-22 01:57:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5207 states, 5206 states have (on average 4.746254321936227) internal successors, (24709), 5206 states have internal predecessors, (24709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:36,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5207 states to 5207 states and 24709 transitions. [2021-05-22 01:57:36,131 INFO L78 Accepts]: Start accepts. Automaton has 5207 states and 24709 transitions. Word has length 29 [2021-05-22 01:57:36,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:36,131 INFO L482 AbstractCegarLoop]: Abstraction has 5207 states and 24709 transitions. [2021-05-22 01:57:36,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:36,132 INFO L276 IsEmpty]: Start isEmpty. Operand 5207 states and 24709 transitions. [2021-05-22 01:57:36,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:36,140 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:36,140 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:36,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-22 01:57:36,140 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:36,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:36,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1167524341, now seen corresponding path program 38 times [2021-05-22 01:57:36,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:36,140 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976906464] [2021-05-22 01:57:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:36,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:36,300 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:36,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976906464] [2021-05-22 01:57:36,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976906464] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:36,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:36,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:36,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678152859] [2021-05-22 01:57:36,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:36,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:36,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:36,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:36,301 INFO L87 Difference]: Start difference. First operand 5207 states and 24709 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:36,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:36,458 INFO L93 Difference]: Finished difference Result 11135 states and 49616 transitions. [2021-05-22 01:57:36,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:36,458 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:36,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:36,491 INFO L225 Difference]: With dead ends: 11135 [2021-05-22 01:57:36,491 INFO L226 Difference]: Without dead ends: 10610 [2021-05-22 01:57:36,492 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 177.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:36,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10610 states. [2021-05-22 01:57:36,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10610 to 5159. [2021-05-22 01:57:36,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5159 states, 5158 states have (on average 4.7531989143078714) internal successors, (24517), 5158 states have internal predecessors, (24517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:36,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5159 states to 5159 states and 24517 transitions. [2021-05-22 01:57:36,785 INFO L78 Accepts]: Start accepts. Automaton has 5159 states and 24517 transitions. Word has length 29 [2021-05-22 01:57:36,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:36,785 INFO L482 AbstractCegarLoop]: Abstraction has 5159 states and 24517 transitions. [2021-05-22 01:57:36,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:36,785 INFO L276 IsEmpty]: Start isEmpty. Operand 5159 states and 24517 transitions. [2021-05-22 01:57:36,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:36,794 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:36,794 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:36,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-22 01:57:36,795 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:36,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:36,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1929877963, now seen corresponding path program 39 times [2021-05-22 01:57:36,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:36,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521186436] [2021-05-22 01:57:36,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:36,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:36,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:36,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521186436] [2021-05-22 01:57:36,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521186436] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:36,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:36,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:36,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13604309] [2021-05-22 01:57:36,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:36,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:36,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:36,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:36,935 INFO L87 Difference]: Start difference. First operand 5159 states and 24517 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:37,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:37,062 INFO L93 Difference]: Finished difference Result 10995 states and 49030 transitions. [2021-05-22 01:57:37,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:37,062 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:37,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:37,089 INFO L225 Difference]: With dead ends: 10995 [2021-05-22 01:57:37,089 INFO L226 Difference]: Without dead ends: 10580 [2021-05-22 01:57:37,089 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:37,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10580 states. [2021-05-22 01:57:37,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10580 to 5191. [2021-05-22 01:57:37,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.745472061657033) internal successors, (24629), 5190 states have internal predecessors, (24629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24629 transitions. [2021-05-22 01:57:37,321 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24629 transitions. Word has length 29 [2021-05-22 01:57:37,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:37,321 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24629 transitions. [2021-05-22 01:57:37,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:37,321 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24629 transitions. [2021-05-22 01:57:37,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:37,330 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:37,330 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:37,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-22 01:57:37,330 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:37,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:37,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1953681337, now seen corresponding path program 40 times [2021-05-22 01:57:37,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:37,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446889300] [2021-05-22 01:57:37,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:37,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:37,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446889300] [2021-05-22 01:57:37,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446889300] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:37,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:37,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:37,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388422354] [2021-05-22 01:57:37,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:37,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:37,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:37,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:37,482 INFO L87 Difference]: Start difference. First operand 5191 states and 24629 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:37,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:37,625 INFO L93 Difference]: Finished difference Result 10995 states and 48998 transitions. [2021-05-22 01:57:37,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:37,625 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:37,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:37,658 INFO L225 Difference]: With dead ends: 10995 [2021-05-22 01:57:37,659 INFO L226 Difference]: Without dead ends: 10548 [2021-05-22 01:57:37,659 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:37,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10548 states. [2021-05-22 01:57:37,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10548 to 5159. [2021-05-22 01:57:37,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5159 states, 5158 states have (on average 4.750096936797208) internal successors, (24501), 5158 states have internal predecessors, (24501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:37,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5159 states to 5159 states and 24501 transitions. [2021-05-22 01:57:37,896 INFO L78 Accepts]: Start accepts. Automaton has 5159 states and 24501 transitions. Word has length 29 [2021-05-22 01:57:37,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:37,896 INFO L482 AbstractCegarLoop]: Abstraction has 5159 states and 24501 transitions. [2021-05-22 01:57:37,897 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:37,897 INFO L276 IsEmpty]: Start isEmpty. Operand 5159 states and 24501 transitions. [2021-05-22 01:57:37,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:37,906 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:37,906 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:37,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-22 01:57:37,906 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:37,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:37,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1817985849, now seen corresponding path program 41 times [2021-05-22 01:57:37,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:37,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41433433] [2021-05-22 01:57:37,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:38,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:38,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41433433] [2021-05-22 01:57:38,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41433433] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:38,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:38,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:38,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745510315] [2021-05-22 01:57:38,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:38,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:38,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:38,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:38,047 INFO L87 Difference]: Start difference. First operand 5159 states and 24501 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:38,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:38,151 INFO L93 Difference]: Finished difference Result 11135 states and 49632 transitions. [2021-05-22 01:57:38,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:38,151 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:38,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:38,178 INFO L225 Difference]: With dead ends: 11135 [2021-05-22 01:57:38,178 INFO L226 Difference]: Without dead ends: 10658 [2021-05-22 01:57:38,178 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 151.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:38,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10658 states. [2021-05-22 01:57:38,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10658 to 5207. [2021-05-22 01:57:38,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5207 states, 5206 states have (on average 4.74010756819055) internal successors, (24677), 5206 states have internal predecessors, (24677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:38,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5207 states to 5207 states and 24677 transitions. [2021-05-22 01:57:38,406 INFO L78 Accepts]: Start accepts. Automaton has 5207 states and 24677 transitions. Word has length 29 [2021-05-22 01:57:38,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:38,406 INFO L482 AbstractCegarLoop]: Abstraction has 5207 states and 24677 transitions. [2021-05-22 01:57:38,406 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:38,406 INFO L276 IsEmpty]: Start isEmpty. Operand 5207 states and 24677 transitions. [2021-05-22 01:57:38,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:38,415 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:38,415 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:38,415 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-22 01:57:38,415 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:38,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:38,416 INFO L82 PathProgramCache]: Analyzing trace with hash -736923223, now seen corresponding path program 42 times [2021-05-22 01:57:38,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:38,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097101986] [2021-05-22 01:57:38,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:38,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:38,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:38,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097101986] [2021-05-22 01:57:38,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097101986] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:38,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:38,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:38,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446814198] [2021-05-22 01:57:38,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:38,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:38,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:38,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:38,571 INFO L87 Difference]: Start difference. First operand 5207 states and 24677 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:38,669 INFO L93 Difference]: Finished difference Result 11073 states and 49315 transitions. [2021-05-22 01:57:38,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:38,670 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:38,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:38,697 INFO L225 Difference]: With dead ends: 11073 [2021-05-22 01:57:38,697 INFO L226 Difference]: Without dead ends: 10594 [2021-05-22 01:57:38,697 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:38,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10594 states. [2021-05-22 01:57:38,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10594 to 5143. [2021-05-22 01:57:38,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.753986775573707) internal successors, (24445), 5142 states have internal predecessors, (24445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:38,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24445 transitions. [2021-05-22 01:57:38,919 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24445 transitions. Word has length 29 [2021-05-22 01:57:38,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:38,919 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24445 transitions. [2021-05-22 01:57:38,919 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:38,919 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24445 transitions. [2021-05-22 01:57:38,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:38,928 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:38,928 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:38,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-22 01:57:38,928 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:38,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:38,928 INFO L82 PathProgramCache]: Analyzing trace with hash 789969189, now seen corresponding path program 43 times [2021-05-22 01:57:38,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:38,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411595692] [2021-05-22 01:57:38,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:39,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:39,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411595692] [2021-05-22 01:57:39,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411595692] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:39,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:39,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:39,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456653530] [2021-05-22 01:57:39,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:39,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:39,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:39,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:39,080 INFO L87 Difference]: Start difference. First operand 5143 states and 24445 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:39,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:39,196 INFO L93 Difference]: Finished difference Result 11732 states and 52192 transitions. [2021-05-22 01:57:39,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:39,197 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:39,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:39,232 INFO L225 Difference]: With dead ends: 11732 [2021-05-22 01:57:39,232 INFO L226 Difference]: Without dead ends: 11190 [2021-05-22 01:57:39,232 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:39,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11190 states. [2021-05-22 01:57:39,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11190 to 5342. [2021-05-22 01:57:39,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5342 states, 5341 states have (on average 4.7242089496349) internal successors, (25232), 5341 states have internal predecessors, (25232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:39,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 25232 transitions. [2021-05-22 01:57:39,550 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 25232 transitions. Word has length 29 [2021-05-22 01:57:39,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:39,550 INFO L482 AbstractCegarLoop]: Abstraction has 5342 states and 25232 transitions. [2021-05-22 01:57:39,550 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:39,550 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 25232 transitions. [2021-05-22 01:57:39,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:39,561 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:39,561 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:39,561 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-05-22 01:57:39,561 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:39,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:39,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1871031815, now seen corresponding path program 44 times [2021-05-22 01:57:39,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:39,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212354888] [2021-05-22 01:57:39,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:39,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:39,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:39,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212354888] [2021-05-22 01:57:39,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212354888] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:39,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:39,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:39,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146849171] [2021-05-22 01:57:39,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:39,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:39,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:39,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:39,716 INFO L87 Difference]: Start difference. First operand 5342 states and 25232 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:39,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:39,823 INFO L93 Difference]: Finished difference Result 11667 states and 51823 transitions. [2021-05-22 01:57:39,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:39,824 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:39,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:39,851 INFO L225 Difference]: With dead ends: 11667 [2021-05-22 01:57:39,851 INFO L226 Difference]: Without dead ends: 11047 [2021-05-22 01:57:39,851 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 155.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:39,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11047 states. [2021-05-22 01:57:40,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11047 to 5199. [2021-05-22 01:57:40,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 4.7435552135436705) internal successors, (24657), 5198 states have internal predecessors, (24657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:40,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 24657 transitions. [2021-05-22 01:57:40,077 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 24657 transitions. Word has length 29 [2021-05-22 01:57:40,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:40,078 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 24657 transitions. [2021-05-22 01:57:40,078 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 24657 transitions. [2021-05-22 01:57:40,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:40,086 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:40,086 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:40,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-05-22 01:57:40,086 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:40,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:40,087 INFO L82 PathProgramCache]: Analyzing trace with hash 309067143, now seen corresponding path program 45 times [2021-05-22 01:57:40,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:40,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004983705] [2021-05-22 01:57:40,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:40,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:40,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004983705] [2021-05-22 01:57:40,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004983705] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:40,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:40,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:40,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832305188] [2021-05-22 01:57:40,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:40,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:40,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:40,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:40,229 INFO L87 Difference]: Start difference. First operand 5199 states and 24657 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:40,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:40,326 INFO L93 Difference]: Finished difference Result 11607 states and 51605 transitions. [2021-05-22 01:57:40,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:40,326 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:40,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:40,354 INFO L225 Difference]: With dead ends: 11607 [2021-05-22 01:57:40,354 INFO L226 Difference]: Without dead ends: 11065 [2021-05-22 01:57:40,354 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:40,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11065 states. [2021-05-22 01:57:40,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11065 to 5279. [2021-05-22 01:57:40,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5279 states, 5278 states have (on average 4.726222053808261) internal successors, (24945), 5278 states have internal predecessors, (24945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:40,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5279 states to 5279 states and 24945 transitions. [2021-05-22 01:57:40,583 INFO L78 Accepts]: Start accepts. Automaton has 5279 states and 24945 transitions. Word has length 29 [2021-05-22 01:57:40,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:40,583 INFO L482 AbstractCegarLoop]: Abstraction has 5279 states and 24945 transitions. [2021-05-22 01:57:40,584 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:40,584 INFO L276 IsEmpty]: Start isEmpty. Operand 5279 states and 24945 transitions. [2021-05-22 01:57:40,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:40,592 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:40,593 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:40,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-05-22 01:57:40,593 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:40,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:40,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1379179129, now seen corresponding path program 46 times [2021-05-22 01:57:40,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:40,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862911356] [2021-05-22 01:57:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:40,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:40,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:40,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862911356] [2021-05-22 01:57:40,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862911356] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:40,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:40,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:40,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742078105] [2021-05-22 01:57:40,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:40,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:40,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:40,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:40,745 INFO L87 Difference]: Start difference. First operand 5279 states and 24945 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:40,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:40,874 INFO L93 Difference]: Finished difference Result 11480 states and 50998 transitions. [2021-05-22 01:57:40,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:40,875 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:40,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:40,909 INFO L225 Difference]: With dead ends: 11480 [2021-05-22 01:57:40,909 INFO L226 Difference]: Without dead ends: 10985 [2021-05-22 01:57:40,910 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:41,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10985 states. [2021-05-22 01:57:41,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10985 to 5199. [2021-05-22 01:57:41,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 4.735859946133128) internal successors, (24617), 5198 states have internal predecessors, (24617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 24617 transitions. [2021-05-22 01:57:41,199 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 24617 transitions. Word has length 29 [2021-05-22 01:57:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:41,199 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 24617 transitions. [2021-05-22 01:57:41,199 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:41,199 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 24617 transitions. [2021-05-22 01:57:41,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:41,208 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:41,208 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:41,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-05-22 01:57:41,208 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:41,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:41,208 INFO L82 PathProgramCache]: Analyzing trace with hash 697072105, now seen corresponding path program 47 times [2021-05-22 01:57:41,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:41,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232166953] [2021-05-22 01:57:41,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:41,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:41,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:41,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232166953] [2021-05-22 01:57:41,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232166953] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:41,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:41,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:41,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148911330] [2021-05-22 01:57:41,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:41,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:41,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:41,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:41,367 INFO L87 Difference]: Start difference. First operand 5199 states and 24617 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:41,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:41,517 INFO L93 Difference]: Finished difference Result 11445 states and 50905 transitions. [2021-05-22 01:57:41,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:41,517 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:41,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:41,552 INFO L225 Difference]: With dead ends: 11445 [2021-05-22 01:57:41,552 INFO L226 Difference]: Without dead ends: 10968 [2021-05-22 01:57:41,552 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 176.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:41,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10968 states. [2021-05-22 01:57:41,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10968 to 5247. [2021-05-22 01:57:41,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 5246 states have (on average 4.726077011056042) internal successors, (24793), 5246 states have internal predecessors, (24793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:41,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 24793 transitions. [2021-05-22 01:57:41,867 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 24793 transitions. Word has length 29 [2021-05-22 01:57:41,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:41,867 INFO L482 AbstractCegarLoop]: Abstraction has 5247 states and 24793 transitions. [2021-05-22 01:57:41,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:41,867 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 24793 transitions. [2021-05-22 01:57:41,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:41,875 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:41,876 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:41,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-05-22 01:57:41,876 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:41,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:41,876 INFO L82 PathProgramCache]: Analyzing trace with hash -149724857, now seen corresponding path program 48 times [2021-05-22 01:57:41,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:41,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049542506] [2021-05-22 01:57:41,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:42,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:42,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:42,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049542506] [2021-05-22 01:57:42,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049542506] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:42,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:42,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:42,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088432556] [2021-05-22 01:57:42,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:42,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:42,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:42,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:42,060 INFO L87 Difference]: Start difference. First operand 5247 states and 24793 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:42,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:42,176 INFO L93 Difference]: Finished difference Result 11383 states and 50588 transitions. [2021-05-22 01:57:42,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:42,177 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:42,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:42,205 INFO L225 Difference]: With dead ends: 11383 [2021-05-22 01:57:42,205 INFO L226 Difference]: Without dead ends: 10840 [2021-05-22 01:57:42,205 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 179.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:42,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10840 states. [2021-05-22 01:57:42,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10840 to 5119. [2021-05-22 01:57:42,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 5118 states have (on average 4.759085580304807) internal successors, (24357), 5118 states have internal predecessors, (24357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:42,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 24357 transitions. [2021-05-22 01:57:42,434 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 24357 transitions. Word has length 29 [2021-05-22 01:57:42,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:42,435 INFO L482 AbstractCegarLoop]: Abstraction has 5119 states and 24357 transitions. [2021-05-22 01:57:42,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:42,435 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 24357 transitions. [2021-05-22 01:57:42,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:42,443 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:42,443 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:42,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-05-22 01:57:42,443 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:42,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:42,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1690230837, now seen corresponding path program 49 times [2021-05-22 01:57:42,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:42,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756066686] [2021-05-22 01:57:42,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:42,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:42,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:42,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756066686] [2021-05-22 01:57:42,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756066686] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:42,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:42,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:42,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751509208] [2021-05-22 01:57:42,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:42,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:42,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:42,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:42,581 INFO L87 Difference]: Start difference. First operand 5119 states and 24357 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:42,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:42,713 INFO L93 Difference]: Finished difference Result 11240 states and 50167 transitions. [2021-05-22 01:57:42,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:42,714 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:42,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:42,744 INFO L225 Difference]: With dead ends: 11240 [2021-05-22 01:57:42,744 INFO L226 Difference]: Without dead ends: 10825 [2021-05-22 01:57:42,744 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 162.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:42,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10825 states. [2021-05-22 01:57:42,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10825 to 5247. [2021-05-22 01:57:42,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 5246 states have (on average 4.751239039268014) internal successors, (24925), 5246 states have internal predecessors, (24925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:42,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 24925 transitions. [2021-05-22 01:57:42,971 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 24925 transitions. Word has length 29 [2021-05-22 01:57:42,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:42,971 INFO L482 AbstractCegarLoop]: Abstraction has 5247 states and 24925 transitions. [2021-05-22 01:57:42,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:42,971 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 24925 transitions. [2021-05-22 01:57:42,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:42,980 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:42,980 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:42,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-05-22 01:57:42,980 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:42,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:42,980 INFO L82 PathProgramCache]: Analyzing trace with hash 64589771, now seen corresponding path program 50 times [2021-05-22 01:57:42,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:42,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840645674] [2021-05-22 01:57:42,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:43,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:43,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:43,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840645674] [2021-05-22 01:57:43,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840645674] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:43,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:43,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:43,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043656999] [2021-05-22 01:57:43,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:43,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:43,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:43,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:43,137 INFO L87 Difference]: Start difference. First operand 5247 states and 24925 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:43,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:43,247 INFO L93 Difference]: Finished difference Result 11367 states and 50646 transitions. [2021-05-22 01:57:43,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:43,248 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:43,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:43,277 INFO L225 Difference]: With dead ends: 11367 [2021-05-22 01:57:43,277 INFO L226 Difference]: Without dead ends: 10745 [2021-05-22 01:57:43,277 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:43,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10745 states. [2021-05-22 01:57:43,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 5167. [2021-05-22 01:57:43,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.756678281068525) internal successors, (24573), 5166 states have internal predecessors, (24573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:43,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24573 transitions. [2021-05-22 01:57:43,505 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24573 transitions. Word has length 29 [2021-05-22 01:57:43,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:43,505 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24573 transitions. [2021-05-22 01:57:43,505 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:43,505 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24573 transitions. [2021-05-22 01:57:43,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:43,513 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:43,514 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:43,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-05-22 01:57:43,514 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:43,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:43,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1605442839, now seen corresponding path program 51 times [2021-05-22 01:57:43,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:43,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558606420] [2021-05-22 01:57:43,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:43,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:43,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558606420] [2021-05-22 01:57:43,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558606420] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:43,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:43,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:43,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605344605] [2021-05-22 01:57:43,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:43,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:43,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:43,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:43,643 INFO L87 Difference]: Start difference. First operand 5167 states and 24573 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:43,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:43,782 INFO L93 Difference]: Finished difference Result 11065 states and 49384 transitions. [2021-05-22 01:57:43,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:43,783 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:43,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:43,809 INFO L225 Difference]: With dead ends: 11065 [2021-05-22 01:57:43,809 INFO L226 Difference]: Without dead ends: 10650 [2021-05-22 01:57:43,810 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:43,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10650 states. [2021-05-22 01:57:44,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10650 to 5199. [2021-05-22 01:57:44,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 4.74894190073105) internal successors, (24685), 5198 states have internal predecessors, (24685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:44,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 24685 transitions. [2021-05-22 01:57:44,038 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 24685 transitions. Word has length 29 [2021-05-22 01:57:44,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:44,038 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 24685 transitions. [2021-05-22 01:57:44,038 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:44,038 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 24685 transitions. [2021-05-22 01:57:44,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:44,047 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:44,047 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:44,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-05-22 01:57:44,047 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:44,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:44,047 INFO L82 PathProgramCache]: Analyzing trace with hash 287403463, now seen corresponding path program 52 times [2021-05-22 01:57:44,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:44,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625732907] [2021-05-22 01:57:44,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:44,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:44,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625732907] [2021-05-22 01:57:44,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625732907] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:44,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:44,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:44,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236925210] [2021-05-22 01:57:44,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:44,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:44,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:44,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:44,172 INFO L87 Difference]: Start difference. First operand 5199 states and 24685 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:44,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:44,287 INFO L93 Difference]: Finished difference Result 11065 states and 49352 transitions. [2021-05-22 01:57:44,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:44,287 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:44,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:44,314 INFO L225 Difference]: With dead ends: 11065 [2021-05-22 01:57:44,314 INFO L226 Difference]: Without dead ends: 10618 [2021-05-22 01:57:44,314 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:44,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10618 states. [2021-05-22 01:57:44,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10618 to 5167. [2021-05-22 01:57:44,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.753581107239643) internal successors, (24557), 5166 states have internal predecessors, (24557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:44,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24557 transitions. [2021-05-22 01:57:44,541 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24557 transitions. Word has length 29 [2021-05-22 01:57:44,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:44,541 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24557 transitions. [2021-05-22 01:57:44,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:44,542 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24557 transitions. [2021-05-22 01:57:44,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:44,551 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:44,551 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:44,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-05-22 01:57:44,551 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:44,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:44,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1009007013, now seen corresponding path program 53 times [2021-05-22 01:57:44,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:44,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82400911] [2021-05-22 01:57:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:44,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:44,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82400911] [2021-05-22 01:57:44,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82400911] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:44,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:44,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:44,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123228026] [2021-05-22 01:57:44,687 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:44,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:44,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:44,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:44,687 INFO L87 Difference]: Start difference. First operand 5167 states and 24557 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:44,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:44,788 INFO L93 Difference]: Finished difference Result 11367 states and 50646 transitions. [2021-05-22 01:57:44,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:44,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:44,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:44,815 INFO L225 Difference]: With dead ends: 11367 [2021-05-22 01:57:44,815 INFO L226 Difference]: Without dead ends: 10825 [2021-05-22 01:57:44,816 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:44,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10825 states. [2021-05-22 01:57:45,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10825 to 5247. [2021-05-22 01:57:45,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 5246 states have (on average 4.735989325200152) internal successors, (24845), 5246 states have internal predecessors, (24845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:45,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 24845 transitions. [2021-05-22 01:57:45,045 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 24845 transitions. Word has length 29 [2021-05-22 01:57:45,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:45,045 INFO L482 AbstractCegarLoop]: Abstraction has 5247 states and 24845 transitions. [2021-05-22 01:57:45,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:45,045 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 24845 transitions. [2021-05-22 01:57:45,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:45,054 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:45,054 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:45,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-05-22 01:57:45,054 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:45,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:45,054 INFO L82 PathProgramCache]: Analyzing trace with hash 802199047, now seen corresponding path program 54 times [2021-05-22 01:57:45,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:45,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033214123] [2021-05-22 01:57:45,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:45,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:45,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033214123] [2021-05-22 01:57:45,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033214123] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:45,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:45,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:45,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626104468] [2021-05-22 01:57:45,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:45,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:45,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:45,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:45,202 INFO L87 Difference]: Start difference. First operand 5247 states and 24845 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:45,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:45,306 INFO L93 Difference]: Finished difference Result 11240 states and 50039 transitions. [2021-05-22 01:57:45,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:45,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:45,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:45,333 INFO L225 Difference]: With dead ends: 11240 [2021-05-22 01:57:45,333 INFO L226 Difference]: Without dead ends: 10713 [2021-05-22 01:57:45,333 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:45,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10713 states. [2021-05-22 01:57:45,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10713 to 5135. [2021-05-22 01:57:45,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5135 states, 5134 states have (on average 4.758278145695364) internal successors, (24429), 5134 states have internal predecessors, (24429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:45,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5135 states to 5135 states and 24429 transitions. [2021-05-22 01:57:45,560 INFO L78 Accepts]: Start accepts. Automaton has 5135 states and 24429 transitions. Word has length 29 [2021-05-22 01:57:45,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:45,561 INFO L482 AbstractCegarLoop]: Abstraction has 5135 states and 24429 transitions. [2021-05-22 01:57:45,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:45,561 INFO L276 IsEmpty]: Start isEmpty. Operand 5135 states and 24429 transitions. [2021-05-22 01:57:45,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:45,569 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:45,569 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:45,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-05-22 01:57:45,569 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:45,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:45,570 INFO L82 PathProgramCache]: Analyzing trace with hash -232183767, now seen corresponding path program 55 times [2021-05-22 01:57:45,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:45,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377864994] [2021-05-22 01:57:45,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:45,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:45,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377864994] [2021-05-22 01:57:45,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377864994] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:45,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:45,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:45,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261733720] [2021-05-22 01:57:45,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:45,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:45,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:45,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:45,726 INFO L87 Difference]: Start difference. First operand 5135 states and 24429 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:45,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:45,848 INFO L93 Difference]: Finished difference Result 11354 states and 50686 transitions. [2021-05-22 01:57:45,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:45,848 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:45,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:45,876 INFO L225 Difference]: With dead ends: 11354 [2021-05-22 01:57:45,876 INFO L226 Difference]: Without dead ends: 10939 [2021-05-22 01:57:45,876 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 180.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:45,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10939 states. [2021-05-22 01:57:46,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10939 to 5255. [2021-05-22 01:57:46,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5255 states, 5254 states have (on average 4.7493338408831365) internal successors, (24953), 5254 states have internal predecessors, (24953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:46,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 24953 transitions. [2021-05-22 01:57:46,106 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 24953 transitions. Word has length 29 [2021-05-22 01:57:46,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:46,106 INFO L482 AbstractCegarLoop]: Abstraction has 5255 states and 24953 transitions. [2021-05-22 01:57:46,106 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:46,106 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 24953 transitions. [2021-05-22 01:57:46,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:46,114 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:46,114 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:46,114 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-05-22 01:57:46,114 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:46,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:46,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1522636841, now seen corresponding path program 56 times [2021-05-22 01:57:46,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:46,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433918346] [2021-05-22 01:57:46,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:46,251 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:46,251 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433918346] [2021-05-22 01:57:46,251 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433918346] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:46,251 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:46,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:46,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077739161] [2021-05-22 01:57:46,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:46,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:46,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:46,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:46,252 INFO L87 Difference]: Start difference. First operand 5255 states and 24953 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:46,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:46,342 INFO L93 Difference]: Finished difference Result 11481 states and 51165 transitions. [2021-05-22 01:57:46,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:46,343 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:46,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:46,370 INFO L225 Difference]: With dead ends: 11481 [2021-05-22 01:57:46,370 INFO L226 Difference]: Without dead ends: 10859 [2021-05-22 01:57:46,370 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:46,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10859 states. [2021-05-22 01:57:46,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10859 to 5175. [2021-05-22 01:57:46,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 5174 states have (on average 4.753189022033244) internal successors, (24593), 5174 states have internal predecessors, (24593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:46,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 24593 transitions. [2021-05-22 01:57:46,602 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 24593 transitions. Word has length 29 [2021-05-22 01:57:46,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:46,602 INFO L482 AbstractCegarLoop]: Abstraction has 5175 states and 24593 transitions. [2021-05-22 01:57:46,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:46,602 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 24593 transitions. [2021-05-22 01:57:46,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:46,610 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:46,610 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:46,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-05-22 01:57:46,611 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:46,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:46,611 INFO L82 PathProgramCache]: Analyzing trace with hash -564327575, now seen corresponding path program 57 times [2021-05-22 01:57:46,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:46,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779706976] [2021-05-22 01:57:46,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:46,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:46,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779706976] [2021-05-22 01:57:46,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779706976] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:46,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:46,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:46,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714616953] [2021-05-22 01:57:46,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:46,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:46,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:46,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:46,749 INFO L87 Difference]: Start difference. First operand 5175 states and 24593 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:46,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:46,880 INFO L93 Difference]: Finished difference Result 11255 states and 50239 transitions. [2021-05-22 01:57:46,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:46,880 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:46,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:46,907 INFO L225 Difference]: With dead ends: 11255 [2021-05-22 01:57:46,908 INFO L226 Difference]: Without dead ends: 10840 [2021-05-22 01:57:46,908 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 151.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:47,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10840 states. [2021-05-22 01:57:47,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10840 to 5223. [2021-05-22 01:57:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5223 states, 5222 states have (on average 4.743201838376101) internal successors, (24769), 5222 states have internal predecessors, (24769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:47,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5223 states to 5223 states and 24769 transitions. [2021-05-22 01:57:47,139 INFO L78 Accepts]: Start accepts. Automaton has 5223 states and 24769 transitions. Word has length 29 [2021-05-22 01:57:47,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:47,139 INFO L482 AbstractCegarLoop]: Abstraction has 5223 states and 24769 transitions. [2021-05-22 01:57:47,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:47,139 INFO L276 IsEmpty]: Start isEmpty. Operand 5223 states and 24769 transitions. [2021-05-22 01:57:47,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:47,148 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:47,148 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:47,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-05-22 01:57:47,148 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:47,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:47,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1079008501, now seen corresponding path program 58 times [2021-05-22 01:57:47,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:47,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336392524] [2021-05-22 01:57:47,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:47,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:47,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336392524] [2021-05-22 01:57:47,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336392524] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:47,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:47,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:47,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603607451] [2021-05-22 01:57:47,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:47,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:47,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:47,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:47,297 INFO L87 Difference]: Start difference. First operand 5223 states and 24769 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:47,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:47,411 INFO L93 Difference]: Finished difference Result 11315 states and 50455 transitions. [2021-05-22 01:57:47,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:47,411 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:47,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:47,438 INFO L225 Difference]: With dead ends: 11315 [2021-05-22 01:57:47,438 INFO L226 Difference]: Without dead ends: 10792 [2021-05-22 01:57:47,439 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 160.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:47,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10792 states. [2021-05-22 01:57:47,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10792 to 5175. [2021-05-22 01:57:47,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 5174 states have (on average 4.748550444530344) internal successors, (24569), 5174 states have internal predecessors, (24569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:47,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 24569 transitions. [2021-05-22 01:57:47,674 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 24569 transitions. Word has length 29 [2021-05-22 01:57:47,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:47,674 INFO L482 AbstractCegarLoop]: Abstraction has 5175 states and 24569 transitions. [2021-05-22 01:57:47,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:47,674 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 24569 transitions. [2021-05-22 01:57:47,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:47,683 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:47,683 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:47,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-05-22 01:57:47,683 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:47,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:47,683 INFO L82 PathProgramCache]: Analyzing trace with hash -340180213, now seen corresponding path program 59 times [2021-05-22 01:57:47,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:47,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371346772] [2021-05-22 01:57:47,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:47,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:47,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:47,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371346772] [2021-05-22 01:57:47,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371346772] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:47,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:47,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:47,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708438498] [2021-05-22 01:57:47,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:47,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:47,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:47,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:47,814 INFO L87 Difference]: Start difference. First operand 5175 states and 24569 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:47,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:47,908 INFO L93 Difference]: Finished difference Result 11571 states and 51560 transitions. [2021-05-22 01:57:47,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:47,908 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:47,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:47,937 INFO L225 Difference]: With dead ends: 11571 [2021-05-22 01:57:47,937 INFO L226 Difference]: Without dead ends: 11029 [2021-05-22 01:57:47,937 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:48,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11029 states. [2021-05-22 01:57:48,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11029 to 5285. [2021-05-22 01:57:48,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5285 states, 5284 states have (on average 4.726343679031037) internal successors, (24974), 5284 states have internal predecessors, (24974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:48,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5285 states to 5285 states and 24974 transitions. [2021-05-22 01:57:48,171 INFO L78 Accepts]: Start accepts. Automaton has 5285 states and 24974 transitions. Word has length 29 [2021-05-22 01:57:48,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:48,171 INFO L482 AbstractCegarLoop]: Abstraction has 5285 states and 24974 transitions. [2021-05-22 01:57:48,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:48,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5285 states and 24974 transitions. [2021-05-22 01:57:48,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:48,181 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:48,181 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:48,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-05-22 01:57:48,181 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:48,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:48,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1081132311, now seen corresponding path program 60 times [2021-05-22 01:57:48,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:48,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053123254] [2021-05-22 01:57:48,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:48,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:48,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053123254] [2021-05-22 01:57:48,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053123254] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:48,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:48,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:48,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198116544] [2021-05-22 01:57:48,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:48,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:48,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:48,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:48,325 INFO L87 Difference]: Start difference. First operand 5285 states and 24974 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:48,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:48,475 INFO L93 Difference]: Finished difference Result 11504 states and 51187 transitions. [2021-05-22 01:57:48,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:48,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:48,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:48,503 INFO L225 Difference]: With dead ends: 11504 [2021-05-22 01:57:48,503 INFO L226 Difference]: Without dead ends: 10879 [2021-05-22 01:57:48,503 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 158.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:48,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10879 states. [2021-05-22 01:57:48,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10879 to 5135. [2021-05-22 01:57:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5135 states, 5134 states have (on average 4.755161667315933) internal successors, (24413), 5134 states have internal predecessors, (24413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:48,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5135 states to 5135 states and 24413 transitions. [2021-05-22 01:57:48,737 INFO L78 Accepts]: Start accepts. Automaton has 5135 states and 24413 transitions. Word has length 29 [2021-05-22 01:57:48,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:48,737 INFO L482 AbstractCegarLoop]: Abstraction has 5135 states and 24413 transitions. [2021-05-22 01:57:48,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:48,737 INFO L276 IsEmpty]: Start isEmpty. Operand 5135 states and 24413 transitions. [2021-05-22 01:57:48,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:48,746 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:48,746 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:48,746 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-05-22 01:57:48,746 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:48,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:48,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1274900231, now seen corresponding path program 61 times [2021-05-22 01:57:48,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:48,746 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821195029] [2021-05-22 01:57:48,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:48,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:48,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821195029] [2021-05-22 01:57:48,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821195029] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:48,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:48,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:48,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707784534] [2021-05-22 01:57:48,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:48,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:48,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:48,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:48,874 INFO L87 Difference]: Start difference. First operand 5135 states and 24413 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:48,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:48,983 INFO L93 Difference]: Finished difference Result 10918 states and 48753 transitions. [2021-05-22 01:57:48,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:48,983 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:48,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:49,010 INFO L225 Difference]: With dead ends: 10918 [2021-05-22 01:57:49,010 INFO L226 Difference]: Without dead ends: 10503 [2021-05-22 01:57:49,010 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:49,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10503 states. [2021-05-22 01:57:49,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10503 to 5183. [2021-05-22 01:57:49,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5183 states, 5182 states have (on average 4.748166730991895) internal successors, (24605), 5182 states have internal predecessors, (24605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:49,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5183 states to 5183 states and 24605 transitions. [2021-05-22 01:57:49,239 INFO L78 Accepts]: Start accepts. Automaton has 5183 states and 24605 transitions. Word has length 29 [2021-05-22 01:57:49,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:49,239 INFO L482 AbstractCegarLoop]: Abstraction has 5183 states and 24605 transitions. [2021-05-22 01:57:49,239 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:49,239 INFO L276 IsEmpty]: Start isEmpty. Operand 5183 states and 24605 transitions. [2021-05-22 01:57:49,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:49,247 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:49,247 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:49,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-05-22 01:57:49,248 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:49,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:49,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1127220763, now seen corresponding path program 62 times [2021-05-22 01:57:49,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:49,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631084144] [2021-05-22 01:57:49,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:49,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:49,386 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:49,386 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631084144] [2021-05-22 01:57:49,386 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631084144] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:49,386 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:49,386 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:49,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136229289] [2021-05-22 01:57:49,386 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:49,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:49,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:49,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:49,387 INFO L87 Difference]: Start difference. First operand 5183 states and 24605 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:49,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:49,510 INFO L93 Difference]: Finished difference Result 10918 states and 48721 transitions. [2021-05-22 01:57:49,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:49,510 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:49,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:49,544 INFO L225 Difference]: With dead ends: 10918 [2021-05-22 01:57:49,544 INFO L226 Difference]: Without dead ends: 10471 [2021-05-22 01:57:49,544 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:49,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10471 states. [2021-05-22 01:57:49,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10471 to 5151. [2021-05-22 01:57:49,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5151 states, 5150 states have (on average 4.752815533980582) internal successors, (24477), 5150 states have internal predecessors, (24477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:49,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5151 states to 5151 states and 24477 transitions. [2021-05-22 01:57:49,805 INFO L78 Accepts]: Start accepts. Automaton has 5151 states and 24477 transitions. Word has length 29 [2021-05-22 01:57:49,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:49,805 INFO L482 AbstractCegarLoop]: Abstraction has 5151 states and 24477 transitions. [2021-05-22 01:57:49,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:49,806 INFO L276 IsEmpty]: Start isEmpty. Operand 5151 states and 24477 transitions. [2021-05-22 01:57:49,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:49,814 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:49,814 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:49,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-05-22 01:57:49,814 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:49,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:49,814 INFO L82 PathProgramCache]: Analyzing trace with hash 793998185, now seen corresponding path program 63 times [2021-05-22 01:57:49,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:49,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609173773] [2021-05-22 01:57:49,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:49,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:49,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:49,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609173773] [2021-05-22 01:57:49,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609173773] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:49,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:49,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:49,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381373939] [2021-05-22 01:57:49,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:49,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:49,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:49,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:49,987 INFO L87 Difference]: Start difference. First operand 5151 states and 24477 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:50,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:50,107 INFO L93 Difference]: Finished difference Result 10994 states and 49081 transitions. [2021-05-22 01:57:50,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:50,108 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:50,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:50,134 INFO L225 Difference]: With dead ends: 10994 [2021-05-22 01:57:50,134 INFO L226 Difference]: Without dead ends: 10579 [2021-05-22 01:57:50,134 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 177.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:50,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10579 states. [2021-05-22 01:57:50,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10579 to 5199. [2021-05-22 01:57:50,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 4.742785686802616) internal successors, (24653), 5198 states have internal predecessors, (24653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:50,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 24653 transitions. [2021-05-22 01:57:50,377 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 24653 transitions. Word has length 29 [2021-05-22 01:57:50,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:50,377 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 24653 transitions. [2021-05-22 01:57:50,377 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 24653 transitions. [2021-05-22 01:57:50,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:50,386 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:50,386 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:50,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-05-22 01:57:50,386 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:50,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:50,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1202121047, now seen corresponding path program 64 times [2021-05-22 01:57:50,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:50,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837368444] [2021-05-22 01:57:50,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:50,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:50,539 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:50,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837368444] [2021-05-22 01:57:50,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837368444] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:50,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:50,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:50,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409677350] [2021-05-22 01:57:50,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:50,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:50,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:50,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:50,539 INFO L87 Difference]: Start difference. First operand 5199 states and 24653 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:50,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:50,663 INFO L93 Difference]: Finished difference Result 11054 states and 49297 transitions. [2021-05-22 01:57:50,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:50,663 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:50,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:50,689 INFO L225 Difference]: With dead ends: 11054 [2021-05-22 01:57:50,689 INFO L226 Difference]: Without dead ends: 10531 [2021-05-22 01:57:50,689 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 165.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:50,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10531 states. [2021-05-22 01:57:50,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10531 to 5151. [2021-05-22 01:57:50,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5151 states, 5150 states have (on average 4.749708737864077) internal successors, (24461), 5150 states have internal predecessors, (24461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:50,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5151 states to 5151 states and 24461 transitions. [2021-05-22 01:57:50,910 INFO L78 Accepts]: Start accepts. Automaton has 5151 states and 24461 transitions. Word has length 29 [2021-05-22 01:57:50,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:50,910 INFO L482 AbstractCegarLoop]: Abstraction has 5151 states and 24461 transitions. [2021-05-22 01:57:50,910 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:50,910 INFO L276 IsEmpty]: Start isEmpty. Operand 5151 states and 24461 transitions. [2021-05-22 01:57:50,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:50,919 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:50,919 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:50,919 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-05-22 01:57:50,919 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:50,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:50,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1257916827, now seen corresponding path program 65 times [2021-05-22 01:57:50,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:50,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120085230] [2021-05-22 01:57:50,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:50,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:51,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:51,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120085230] [2021-05-22 01:57:51,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120085230] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:51,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:51,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:51,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776364016] [2021-05-22 01:57:51,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:51,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:51,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:51,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:51,081 INFO L87 Difference]: Start difference. First operand 5151 states and 24461 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:51,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:51,176 INFO L93 Difference]: Finished difference Result 10994 states and 49065 transitions. [2021-05-22 01:57:51,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:51,177 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:51,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:51,203 INFO L225 Difference]: With dead ends: 10994 [2021-05-22 01:57:51,203 INFO L226 Difference]: Without dead ends: 10579 [2021-05-22 01:57:51,203 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 155.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:51,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10579 states. [2021-05-22 01:57:51,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10579 to 5199. [2021-05-22 01:57:51,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 4.7397075798384) internal successors, (24637), 5198 states have internal predecessors, (24637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:51,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 24637 transitions. [2021-05-22 01:57:51,430 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 24637 transitions. Word has length 29 [2021-05-22 01:57:51,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:51,430 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 24637 transitions. [2021-05-22 01:57:51,430 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:51,430 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 24637 transitions. [2021-05-22 01:57:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:51,438 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:51,439 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:51,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-05-22 01:57:51,439 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:51,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:51,439 INFO L82 PathProgramCache]: Analyzing trace with hash -176854201, now seen corresponding path program 66 times [2021-05-22 01:57:51,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:51,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390717276] [2021-05-22 01:57:51,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:51,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:51,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:51,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390717276] [2021-05-22 01:57:51,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390717276] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:51,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:51,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:51,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871562435] [2021-05-22 01:57:51,569 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:51,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:51,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:51,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:51,569 INFO L87 Difference]: Start difference. First operand 5199 states and 24637 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:51,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:51,676 INFO L93 Difference]: Finished difference Result 11054 states and 49281 transitions. [2021-05-22 01:57:51,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:51,676 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:51,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:51,702 INFO L225 Difference]: With dead ends: 11054 [2021-05-22 01:57:51,702 INFO L226 Difference]: Without dead ends: 10515 [2021-05-22 01:57:51,702 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:51,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10515 states. [2021-05-22 01:57:51,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10515 to 5135. [2021-05-22 01:57:51,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5135 states, 5134 states have (on average 4.753603428126217) internal successors, (24405), 5134 states have internal predecessors, (24405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:51,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5135 states to 5135 states and 24405 transitions. [2021-05-22 01:57:51,924 INFO L78 Accepts]: Start accepts. Automaton has 5135 states and 24405 transitions. Word has length 29 [2021-05-22 01:57:51,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:51,924 INFO L482 AbstractCegarLoop]: Abstraction has 5135 states and 24405 transitions. [2021-05-22 01:57:51,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:51,925 INFO L276 IsEmpty]: Start isEmpty. Operand 5135 states and 24405 transitions. [2021-05-22 01:57:51,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:51,933 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:51,933 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:51,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-05-22 01:57:51,933 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:51,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:51,934 INFO L82 PathProgramCache]: Analyzing trace with hash -345910589, now seen corresponding path program 67 times [2021-05-22 01:57:51,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:51,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985512849] [2021-05-22 01:57:51,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:52,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:52,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985512849] [2021-05-22 01:57:52,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985512849] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:52,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:52,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:52,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661199853] [2021-05-22 01:57:52,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:52,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:52,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:52,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:52,062 INFO L87 Difference]: Start difference. First operand 5135 states and 24405 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:52,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:52,150 INFO L93 Difference]: Finished difference Result 11481 states and 51189 transitions. [2021-05-22 01:57:52,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:52,151 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:52,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:52,177 INFO L225 Difference]: With dead ends: 11481 [2021-05-22 01:57:52,178 INFO L226 Difference]: Without dead ends: 10939 [2021-05-22 01:57:52,178 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:52,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10939 states. [2021-05-22 01:57:52,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10939 to 5255. [2021-05-22 01:57:52,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5255 states, 5254 states have (on average 4.738675295013323) internal successors, (24897), 5254 states have internal predecessors, (24897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:52,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 24897 transitions. [2021-05-22 01:57:52,405 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 24897 transitions. Word has length 29 [2021-05-22 01:57:52,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:52,405 INFO L482 AbstractCegarLoop]: Abstraction has 5255 states and 24897 transitions. [2021-05-22 01:57:52,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:52,405 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 24897 transitions. [2021-05-22 01:57:52,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:52,414 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:52,414 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:52,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-05-22 01:57:52,414 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:52,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:52,414 INFO L82 PathProgramCache]: Analyzing trace with hash -552718555, now seen corresponding path program 68 times [2021-05-22 01:57:52,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:52,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262376606] [2021-05-22 01:57:52,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:52,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:52,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:52,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262376606] [2021-05-22 01:57:52,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262376606] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:52,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:52,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:52,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221906115] [2021-05-22 01:57:52,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:52,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:52,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:52,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:52,544 INFO L87 Difference]: Start difference. First operand 5255 states and 24897 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:52,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:52,680 INFO L93 Difference]: Finished difference Result 11354 states and 50582 transitions. [2021-05-22 01:57:52,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:52,680 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:52,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:52,706 INFO L225 Difference]: With dead ends: 11354 [2021-05-22 01:57:52,707 INFO L226 Difference]: Without dead ends: 10859 [2021-05-22 01:57:52,707 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:52,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10859 states. [2021-05-22 01:57:52,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10859 to 5175. [2021-05-22 01:57:52,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 5174 states have (on average 4.748550444530344) internal successors, (24569), 5174 states have internal predecessors, (24569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:52,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 24569 transitions. [2021-05-22 01:57:52,931 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 24569 transitions. Word has length 29 [2021-05-22 01:57:52,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:52,931 INFO L482 AbstractCegarLoop]: Abstraction has 5175 states and 24569 transitions. [2021-05-22 01:57:52,931 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:52,931 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 24569 transitions. [2021-05-22 01:57:52,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:52,940 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:52,940 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:52,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-05-22 01:57:52,940 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:52,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:52,940 INFO L82 PathProgramCache]: Analyzing trace with hash -826812635, now seen corresponding path program 69 times [2021-05-22 01:57:52,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:52,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761913740] [2021-05-22 01:57:52,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:53,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:53,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761913740] [2021-05-22 01:57:53,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761913740] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:53,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:53,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:53,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645786858] [2021-05-22 01:57:53,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:53,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:53,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:53,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:53,080 INFO L87 Difference]: Start difference. First operand 5175 states and 24569 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:53,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:53,169 INFO L93 Difference]: Finished difference Result 11571 states and 51560 transitions. [2021-05-22 01:57:53,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:53,170 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:53,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:53,196 INFO L225 Difference]: With dead ends: 11571 [2021-05-22 01:57:53,197 INFO L226 Difference]: Without dead ends: 11029 [2021-05-22 01:57:53,197 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:53,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11029 states. [2021-05-22 01:57:53,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11029 to 5285. [2021-05-22 01:57:53,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5285 states, 5284 states have (on average 4.726343679031037) internal successors, (24974), 5284 states have internal predecessors, (24974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:53,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5285 states to 5285 states and 24974 transitions. [2021-05-22 01:57:53,433 INFO L78 Accepts]: Start accepts. Automaton has 5285 states and 24974 transitions. Word has length 29 [2021-05-22 01:57:53,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:53,433 INFO L482 AbstractCegarLoop]: Abstraction has 5285 states and 24974 transitions. [2021-05-22 01:57:53,433 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:53,433 INFO L276 IsEmpty]: Start isEmpty. Operand 5285 states and 24974 transitions. [2021-05-22 01:57:53,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:53,442 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:53,442 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:53,442 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-05-22 01:57:53,442 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:53,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:53,442 INFO L82 PathProgramCache]: Analyzing trace with hash 492037797, now seen corresponding path program 70 times [2021-05-22 01:57:53,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:53,442 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785988443] [2021-05-22 01:57:53,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:53,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:53,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785988443] [2021-05-22 01:57:53,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785988443] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:53,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:53,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:53,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126263053] [2021-05-22 01:57:53,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:53,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:53,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:53,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:53,586 INFO L87 Difference]: Start difference. First operand 5285 states and 24974 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:53,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:53,701 INFO L93 Difference]: Finished difference Result 11504 states and 51187 transitions. [2021-05-22 01:57:53,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:53,701 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:53,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:53,729 INFO L225 Difference]: With dead ends: 11504 [2021-05-22 01:57:53,729 INFO L226 Difference]: Without dead ends: 10919 [2021-05-22 01:57:53,729 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:53,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10919 states. [2021-05-22 01:57:53,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10919 to 5175. [2021-05-22 01:57:53,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 5174 states have (on average 4.740819482025512) internal successors, (24529), 5174 states have internal predecessors, (24529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:53,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 24529 transitions. [2021-05-22 01:57:53,960 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 24529 transitions. Word has length 29 [2021-05-22 01:57:53,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:53,960 INFO L482 AbstractCegarLoop]: Abstraction has 5175 states and 24529 transitions. [2021-05-22 01:57:53,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:53,960 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 24529 transitions. [2021-05-22 01:57:53,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:53,969 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:53,969 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:53,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-05-22 01:57:53,969 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:53,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:53,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1875231367, now seen corresponding path program 71 times [2021-05-22 01:57:53,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:53,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845120968] [2021-05-22 01:57:53,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:54,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:54,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845120968] [2021-05-22 01:57:54,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845120968] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:54,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:54,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:54,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379729212] [2021-05-22 01:57:54,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:54,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:54,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:54,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:54,104 INFO L87 Difference]: Start difference. First operand 5175 states and 24529 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:54,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:54,210 INFO L93 Difference]: Finished difference Result 11255 states and 50175 transitions. [2021-05-22 01:57:54,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:54,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:54,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:54,237 INFO L225 Difference]: With dead ends: 11255 [2021-05-22 01:57:54,238 INFO L226 Difference]: Without dead ends: 10840 [2021-05-22 01:57:54,238 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:54,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10840 states. [2021-05-22 01:57:54,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10840 to 5223. [2021-05-22 01:57:54,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5223 states, 5222 states have (on average 4.73094599770203) internal successors, (24705), 5222 states have internal predecessors, (24705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:54,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5223 states to 5223 states and 24705 transitions. [2021-05-22 01:57:54,470 INFO L78 Accepts]: Start accepts. Automaton has 5223 states and 24705 transitions. Word has length 29 [2021-05-22 01:57:54,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:54,470 INFO L482 AbstractCegarLoop]: Abstraction has 5223 states and 24705 transitions. [2021-05-22 01:57:54,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:54,470 INFO L276 IsEmpty]: Start isEmpty. Operand 5223 states and 24705 transitions. [2021-05-22 01:57:54,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:54,479 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:54,479 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:54,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-05-22 01:57:54,479 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:54,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:54,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1028434405, now seen corresponding path program 72 times [2021-05-22 01:57:54,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:54,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529662102] [2021-05-22 01:57:54,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:54,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:54,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:54,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529662102] [2021-05-22 01:57:54,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529662102] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:54,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:54,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:54,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958066200] [2021-05-22 01:57:54,616 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:54,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:54,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:54,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:54,617 INFO L87 Difference]: Start difference. First operand 5223 states and 24705 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:54,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:54,725 INFO L93 Difference]: Finished difference Result 11315 states and 50391 transitions. [2021-05-22 01:57:54,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:54,725 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:54,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:54,754 INFO L225 Difference]: With dead ends: 11315 [2021-05-22 01:57:54,754 INFO L226 Difference]: Without dead ends: 10736 [2021-05-22 01:57:54,755 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:54,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10736 states. [2021-05-22 01:57:54,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10736 to 5119. [2021-05-22 01:57:54,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 5118 states have (on average 4.757522469714733) internal successors, (24349), 5118 states have internal predecessors, (24349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:54,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 24349 transitions. [2021-05-22 01:57:54,981 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 24349 transitions. Word has length 29 [2021-05-22 01:57:54,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:54,981 INFO L482 AbstractCegarLoop]: Abstraction has 5119 states and 24349 transitions. [2021-05-22 01:57:54,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:54,981 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 24349 transitions. [2021-05-22 01:57:54,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:54,990 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:54,990 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:54,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-05-22 01:57:54,990 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:54,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:54,990 INFO L82 PathProgramCache]: Analyzing trace with hash 988599815, now seen corresponding path program 73 times [2021-05-22 01:57:54,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:54,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422205679] [2021-05-22 01:57:54,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:55,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:55,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422205679] [2021-05-22 01:57:55,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422205679] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:55,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:55,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:55,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506244345] [2021-05-22 01:57:55,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:55,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:55,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:55,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:55,133 INFO L87 Difference]: Start difference. First operand 5119 states and 24349 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:55,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:55,238 INFO L93 Difference]: Finished difference Result 10781 states and 48157 transitions. [2021-05-22 01:57:55,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:55,239 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:55,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:55,265 INFO L225 Difference]: With dead ends: 10781 [2021-05-22 01:57:55,265 INFO L226 Difference]: Without dead ends: 10366 [2021-05-22 01:57:55,265 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 155.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:55,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10366 states. [2021-05-22 01:57:55,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10366 to 5191. [2021-05-22 01:57:55,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.7493256262042385) internal successors, (24649), 5190 states have internal predecessors, (24649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:55,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24649 transitions. [2021-05-22 01:57:55,491 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24649 transitions. Word has length 29 [2021-05-22 01:57:55,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:55,491 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24649 transitions. [2021-05-22 01:57:55,491 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:55,492 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24649 transitions. [2021-05-22 01:57:55,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:55,500 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:55,500 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:55,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-05-22 01:57:55,500 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:55,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:55,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1705262761, now seen corresponding path program 74 times [2021-05-22 01:57:55,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:55,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015983235] [2021-05-22 01:57:55,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:55,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:55,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:55,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015983235] [2021-05-22 01:57:55,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015983235] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:55,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:55,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:55,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421505659] [2021-05-22 01:57:55,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:55,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:55,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:55,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:55,632 INFO L87 Difference]: Start difference. First operand 5191 states and 24649 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:55,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:55,738 INFO L93 Difference]: Finished difference Result 10843 states and 48378 transitions. [2021-05-22 01:57:55,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:55,738 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:55,764 INFO L225 Difference]: With dead ends: 10843 [2021-05-22 01:57:55,764 INFO L226 Difference]: Without dead ends: 10318 [2021-05-22 01:57:55,764 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:55,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10318 states. [2021-05-22 01:57:55,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10318 to 5143. [2021-05-22 01:57:55,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.756320497860755) internal successors, (24457), 5142 states have internal predecessors, (24457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:55,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24457 transitions. [2021-05-22 01:57:55,990 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24457 transitions. Word has length 29 [2021-05-22 01:57:55,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:55,990 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24457 transitions. [2021-05-22 01:57:55,990 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:55,990 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24457 transitions. [2021-05-22 01:57:55,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:55,998 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:55,999 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:55,999 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-05-22 01:57:55,999 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:55,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:55,999 INFO L82 PathProgramCache]: Analyzing trace with hash 507697769, now seen corresponding path program 75 times [2021-05-22 01:57:55,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:55,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015256658] [2021-05-22 01:57:55,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:56,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:56,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015256658] [2021-05-22 01:57:56,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015256658] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:56,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:56,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:56,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092937378] [2021-05-22 01:57:56,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:56,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:56,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:56,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:56,119 INFO L87 Difference]: Start difference. First operand 5143 states and 24457 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:56,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:56,231 INFO L93 Difference]: Finished difference Result 10703 states and 47792 transitions. [2021-05-22 01:57:56,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:56,231 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:56,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:56,257 INFO L225 Difference]: With dead ends: 10703 [2021-05-22 01:57:56,257 INFO L226 Difference]: Without dead ends: 10288 [2021-05-22 01:57:56,257 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:56,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10288 states. [2021-05-22 01:57:56,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10288 to 5175. [2021-05-22 01:57:56,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 5174 states have (on average 4.748550444530344) internal successors, (24569), 5174 states have internal predecessors, (24569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:56,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 24569 transitions. [2021-05-22 01:57:56,483 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 24569 transitions. Word has length 29 [2021-05-22 01:57:56,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:56,484 INFO L482 AbstractCegarLoop]: Abstraction has 5175 states and 24569 transitions. [2021-05-22 01:57:56,484 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:56,484 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 24569 transitions. [2021-05-22 01:57:56,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:56,492 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:56,493 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:56,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-05-22 01:57:56,493 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:56,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:56,493 INFO L82 PathProgramCache]: Analyzing trace with hash 919105765, now seen corresponding path program 76 times [2021-05-22 01:57:56,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:56,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515450603] [2021-05-22 01:57:56,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:56,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:56,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515450603] [2021-05-22 01:57:56,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515450603] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:56,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:56,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:56,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967793557] [2021-05-22 01:57:56,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:56,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:56,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:56,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:56,625 INFO L87 Difference]: Start difference. First operand 5175 states and 24569 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:56,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:56,720 INFO L93 Difference]: Finished difference Result 10703 states and 47760 transitions. [2021-05-22 01:57:56,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:56,720 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:56,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:56,746 INFO L225 Difference]: With dead ends: 10703 [2021-05-22 01:57:56,746 INFO L226 Difference]: Without dead ends: 10256 [2021-05-22 01:57:56,746 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:56,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10256 states. [2021-05-22 01:57:56,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10256 to 5143. [2021-05-22 01:57:56,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.753208868144691) internal successors, (24441), 5142 states have internal predecessors, (24441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:56,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24441 transitions. [2021-05-22 01:57:56,966 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24441 transitions. Word has length 29 [2021-05-22 01:57:56,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:56,967 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24441 transitions. [2021-05-22 01:57:56,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:56,967 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24441 transitions. [2021-05-22 01:57:56,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:56,975 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:56,975 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:56,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-05-22 01:57:56,975 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:56,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:56,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1054801253, now seen corresponding path program 77 times [2021-05-22 01:57:56,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:56,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363717665] [2021-05-22 01:57:56,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:57,115 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:57,115 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363717665] [2021-05-22 01:57:57,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363717665] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:57,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:57,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:57,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808586869] [2021-05-22 01:57:57,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:57,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:57,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:57,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:57,116 INFO L87 Difference]: Start difference. First operand 5143 states and 24441 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:57,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:57,225 INFO L93 Difference]: Finished difference Result 10843 states and 48394 transitions. [2021-05-22 01:57:57,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:57,226 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:57,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:57,251 INFO L225 Difference]: With dead ends: 10843 [2021-05-22 01:57:57,251 INFO L226 Difference]: Without dead ends: 10366 [2021-05-22 01:57:57,252 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 153.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:57,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10366 states. [2021-05-22 01:57:57,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10366 to 5191. [2021-05-22 01:57:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.743159922928709) internal successors, (24617), 5190 states have internal predecessors, (24617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:57,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24617 transitions. [2021-05-22 01:57:57,477 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24617 transitions. Word has length 29 [2021-05-22 01:57:57,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:57,477 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24617 transitions. [2021-05-22 01:57:57,477 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:57,477 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24617 transitions. [2021-05-22 01:57:57,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:57,486 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:57,486 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:57,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-05-22 01:57:57,486 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:57,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:57,486 INFO L82 PathProgramCache]: Analyzing trace with hash 2135863879, now seen corresponding path program 78 times [2021-05-22 01:57:57,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:57,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417612075] [2021-05-22 01:57:57,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:57,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:57,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:57,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417612075] [2021-05-22 01:57:57,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417612075] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:57,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:57,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:57,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240246708] [2021-05-22 01:57:57,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:57,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:57,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:57,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:57,612 INFO L87 Difference]: Start difference. First operand 5191 states and 24617 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:57,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:57,702 INFO L93 Difference]: Finished difference Result 10781 states and 48077 transitions. [2021-05-22 01:57:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:57,703 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:57,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:57,728 INFO L225 Difference]: With dead ends: 10781 [2021-05-22 01:57:57,729 INFO L226 Difference]: Without dead ends: 10302 [2021-05-22 01:57:57,729 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:57,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10302 states. [2021-05-22 01:57:57,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10302 to 5127. [2021-05-22 01:57:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 5126 states have (on average 4.7571205618415915) internal successors, (24385), 5126 states have internal predecessors, (24385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:57,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 24385 transitions. [2021-05-22 01:57:57,949 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 24385 transitions. Word has length 29 [2021-05-22 01:57:57,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:57,949 INFO L482 AbstractCegarLoop]: Abstraction has 5127 states and 24385 transitions. [2021-05-22 01:57:57,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:57,949 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 24385 transitions. [2021-05-22 01:57:57,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:57,958 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:57,958 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:57,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-05-22 01:57:57,958 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:57,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:57,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1596765719, now seen corresponding path program 79 times [2021-05-22 01:57:57,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:57,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271453057] [2021-05-22 01:57:57,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:58,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:58,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:58,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271453057] [2021-05-22 01:57:58,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271453057] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:58,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:58,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:58,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085937604] [2021-05-22 01:57:58,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:58,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:58,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:58,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:58,100 INFO L87 Difference]: Start difference. First operand 5127 states and 24385 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:58,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:58,201 INFO L93 Difference]: Finished difference Result 10895 states and 48684 transitions. [2021-05-22 01:57:58,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:58,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:58,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:58,227 INFO L225 Difference]: With dead ends: 10895 [2021-05-22 01:57:58,228 INFO L226 Difference]: Without dead ends: 10480 [2021-05-22 01:57:58,228 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:58,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10480 states. [2021-05-22 01:57:58,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10480 to 5199. [2021-05-22 01:57:58,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 4.74894190073105) internal successors, (24685), 5198 states have internal predecessors, (24685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:58,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 24685 transitions. [2021-05-22 01:57:58,457 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 24685 transitions. Word has length 29 [2021-05-22 01:57:58,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:58,457 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 24685 transitions. [2021-05-22 01:57:58,457 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:58,457 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 24685 transitions. [2021-05-22 01:57:58,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:58,465 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:58,465 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:58,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-05-22 01:57:58,466 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:58,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:58,466 INFO L82 PathProgramCache]: Analyzing trace with hash -880102773, now seen corresponding path program 80 times [2021-05-22 01:57:58,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:58,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102219302] [2021-05-22 01:57:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:58,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:58,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102219302] [2021-05-22 01:57:58,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102219302] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:58,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:58,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:58,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342319541] [2021-05-22 01:57:58,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:58,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:58,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:58,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:58,614 INFO L87 Difference]: Start difference. First operand 5199 states and 24685 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:58,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:58,722 INFO L93 Difference]: Finished difference Result 10957 states and 48905 transitions. [2021-05-22 01:57:58,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:58,722 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:58,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:58,748 INFO L225 Difference]: With dead ends: 10957 [2021-05-22 01:57:58,748 INFO L226 Difference]: Without dead ends: 10432 [2021-05-22 01:57:58,748 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 163.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:58,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10432 states. [2021-05-22 01:57:58,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10432 to 5151. [2021-05-22 01:57:58,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5151 states, 5150 states have (on average 4.754368932038835) internal successors, (24485), 5150 states have internal predecessors, (24485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:58,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5151 states to 5151 states and 24485 transitions. [2021-05-22 01:57:58,970 INFO L78 Accepts]: Start accepts. Automaton has 5151 states and 24485 transitions. Word has length 29 [2021-05-22 01:57:58,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:58,970 INFO L482 AbstractCegarLoop]: Abstraction has 5151 states and 24485 transitions. [2021-05-22 01:57:58,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:58,970 INFO L276 IsEmpty]: Start isEmpty. Operand 5151 states and 24485 transitions. [2021-05-22 01:57:58,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:58,979 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:58,979 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:58,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-05-22 01:57:58,979 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:58,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:58,980 INFO L82 PathProgramCache]: Analyzing trace with hash -503795223, now seen corresponding path program 81 times [2021-05-22 01:57:58,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:58,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269528519] [2021-05-22 01:57:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:59,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:59,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269528519] [2021-05-22 01:57:59,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269528519] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:59,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:59,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:59,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284676511] [2021-05-22 01:57:59,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:59,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:59,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:59,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:59,109 INFO L87 Difference]: Start difference. First operand 5151 states and 24485 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:59,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:59,218 INFO L93 Difference]: Finished difference Result 10893 states and 48655 transitions. [2021-05-22 01:57:59,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:59,219 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:59,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:59,244 INFO L225 Difference]: With dead ends: 10893 [2021-05-22 01:57:59,245 INFO L226 Difference]: Without dead ends: 10478 [2021-05-22 01:57:59,245 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:59,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10478 states. [2021-05-22 01:57:59,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10478 to 5199. [2021-05-22 01:57:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 4.744324740284725) internal successors, (24661), 5198 states have internal predecessors, (24661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:59,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 24661 transitions. [2021-05-22 01:57:59,470 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 24661 transitions. Word has length 29 [2021-05-22 01:57:59,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:57:59,470 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 24661 transitions. [2021-05-22 01:57:59,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:59,470 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 24661 transitions. [2021-05-22 01:57:59,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:57:59,479 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:57:59,479 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:57:59,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-05-22 01:57:59,479 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:57:59,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:57:59,479 INFO L82 PathProgramCache]: Analyzing trace with hash 525770153, now seen corresponding path program 82 times [2021-05-22 01:57:59,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:57:59,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867738301] [2021-05-22 01:57:59,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:57:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:57:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:57:59,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:57:59,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867738301] [2021-05-22 01:57:59,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867738301] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:57:59,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:57:59,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:57:59,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167179925] [2021-05-22 01:57:59,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:57:59,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:57:59,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:57:59,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:57:59,638 INFO L87 Difference]: Start difference. First operand 5199 states and 24661 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:57:59,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:57:59,774 INFO L93 Difference]: Finished difference Result 10953 states and 48871 transitions. [2021-05-22 01:57:59,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:57:59,775 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:57:59,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:57:59,800 INFO L225 Difference]: With dead ends: 10953 [2021-05-22 01:57:59,800 INFO L226 Difference]: Without dead ends: 10430 [2021-05-22 01:57:59,800 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 173.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:57:59,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10430 states. [2021-05-22 01:58:00,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10430 to 5151. [2021-05-22 01:58:00,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5151 states, 5150 states have (on average 4.749708737864077) internal successors, (24461), 5150 states have internal predecessors, (24461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:00,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5151 states to 5151 states and 24461 transitions. [2021-05-22 01:58:00,022 INFO L78 Accepts]: Start accepts. Automaton has 5151 states and 24461 transitions. Word has length 29 [2021-05-22 01:58:00,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:00,022 INFO L482 AbstractCegarLoop]: Abstraction has 5151 states and 24461 transitions. [2021-05-22 01:58:00,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:00,023 INFO L276 IsEmpty]: Start isEmpty. Operand 5151 states and 24461 transitions. [2021-05-22 01:58:00,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:00,031 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:00,031 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:00,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-05-22 01:58:00,031 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:00,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:00,031 INFO L82 PathProgramCache]: Analyzing trace with hash 699696587, now seen corresponding path program 83 times [2021-05-22 01:58:00,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:00,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328022411] [2021-05-22 01:58:00,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:00,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:00,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:00,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328022411] [2021-05-22 01:58:00,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328022411] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:00,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:00,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:00,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957831685] [2021-05-22 01:58:00,175 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:00,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:00,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:00,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:00,176 INFO L87 Difference]: Start difference. First operand 5151 states and 24461 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:00,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:00,302 INFO L93 Difference]: Finished difference Result 11047 states and 49316 transitions. [2021-05-22 01:58:00,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:00,302 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:00,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:00,328 INFO L225 Difference]: With dead ends: 11047 [2021-05-22 01:58:00,328 INFO L226 Difference]: Without dead ends: 10570 [2021-05-22 01:58:00,329 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 162.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:00,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10570 states. [2021-05-22 01:58:00,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10570 to 5229. [2021-05-22 01:58:00,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5228 states have (on average 4.734889058913542) internal successors, (24754), 5228 states have internal predecessors, (24754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:00,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 24754 transitions. [2021-05-22 01:58:00,552 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 24754 transitions. Word has length 29 [2021-05-22 01:58:00,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:00,552 INFO L482 AbstractCegarLoop]: Abstraction has 5229 states and 24754 transitions. [2021-05-22 01:58:00,552 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:00,552 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 24754 transitions. [2021-05-22 01:58:00,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:00,561 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:00,561 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:00,561 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-05-22 01:58:00,561 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:00,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:00,561 INFO L82 PathProgramCache]: Analyzing trace with hash -692447959, now seen corresponding path program 84 times [2021-05-22 01:58:00,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:00,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100271199] [2021-05-22 01:58:00,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:00,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:00,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100271199] [2021-05-22 01:58:00,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100271199] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:00,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:00,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:00,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174308493] [2021-05-22 01:58:00,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:00,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:00,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:00,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:00,678 INFO L87 Difference]: Start difference. First operand 5229 states and 24754 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:00,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:00,788 INFO L93 Difference]: Finished difference Result 11045 states and 49233 transitions. [2021-05-22 01:58:00,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:00,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:00,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:00,815 INFO L225 Difference]: With dead ends: 11045 [2021-05-22 01:58:00,815 INFO L226 Difference]: Without dead ends: 10468 [2021-05-22 01:58:00,816 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:00,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10468 states. [2021-05-22 01:58:01,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10468 to 5127. [2021-05-22 01:58:01,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 5126 states have (on average 4.755559890753024) internal successors, (24377), 5126 states have internal predecessors, (24377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 24377 transitions. [2021-05-22 01:58:01,039 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 24377 transitions. Word has length 29 [2021-05-22 01:58:01,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:01,039 INFO L482 AbstractCegarLoop]: Abstraction has 5127 states and 24377 transitions. [2021-05-22 01:58:01,039 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:01,039 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 24377 transitions. [2021-05-22 01:58:01,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:01,047 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:01,047 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:01,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-05-22 01:58:01,047 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:01,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:01,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1908815307, now seen corresponding path program 85 times [2021-05-22 01:58:01,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:01,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19954275] [2021-05-22 01:58:01,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:01,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:01,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19954275] [2021-05-22 01:58:01,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19954275] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:01,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:01,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:01,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202239574] [2021-05-22 01:58:01,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:01,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:01,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:01,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:01,167 INFO L87 Difference]: Start difference. First operand 5127 states and 24377 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:01,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:01,268 INFO L93 Difference]: Finished difference Result 10701 states and 47787 transitions. [2021-05-22 01:58:01,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:01,269 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:01,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:01,294 INFO L225 Difference]: With dead ends: 10701 [2021-05-22 01:58:01,294 INFO L226 Difference]: Without dead ends: 10286 [2021-05-22 01:58:01,294 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:01,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10286 states. [2021-05-22 01:58:01,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10286 to 5175. [2021-05-22 01:58:01,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 5174 states have (on average 4.748550444530344) internal successors, (24569), 5174 states have internal predecessors, (24569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:01,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 24569 transitions. [2021-05-22 01:58:01,513 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 24569 transitions. Word has length 29 [2021-05-22 01:58:01,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:01,513 INFO L482 AbstractCegarLoop]: Abstraction has 5175 states and 24569 transitions. [2021-05-22 01:58:01,513 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:01,513 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 24569 transitions. [2021-05-22 01:58:01,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:01,522 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:01,522 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:01,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-05-22 01:58:01,522 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:01,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:01,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1974743993, now seen corresponding path program 86 times [2021-05-22 01:58:01,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:01,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875669710] [2021-05-22 01:58:01,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:01,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:01,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875669710] [2021-05-22 01:58:01,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875669710] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:01,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:01,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:01,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012765664] [2021-05-22 01:58:01,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:01,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:01,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:01,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:01,643 INFO L87 Difference]: Start difference. First operand 5175 states and 24569 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:01,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:01,738 INFO L93 Difference]: Finished difference Result 10701 states and 47755 transitions. [2021-05-22 01:58:01,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:01,738 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:01,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:01,763 INFO L225 Difference]: With dead ends: 10701 [2021-05-22 01:58:01,763 INFO L226 Difference]: Without dead ends: 10254 [2021-05-22 01:58:01,764 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:01,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10254 states. [2021-05-22 01:58:01,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10254 to 5143. [2021-05-22 01:58:01,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.753208868144691) internal successors, (24441), 5142 states have internal predecessors, (24441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:01,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24441 transitions. [2021-05-22 01:58:01,982 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24441 transitions. Word has length 29 [2021-05-22 01:58:01,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:01,982 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24441 transitions. [2021-05-22 01:58:01,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:01,982 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24441 transitions. [2021-05-22 01:58:01,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:01,990 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:01,990 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:01,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-05-22 01:58:01,990 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:01,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:01,990 INFO L82 PathProgramCache]: Analyzing trace with hash -114246231, now seen corresponding path program 87 times [2021-05-22 01:58:01,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:01,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69310383] [2021-05-22 01:58:01,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:02,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:02,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:02,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69310383] [2021-05-22 01:58:02,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69310383] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:02,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:02,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:02,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656536157] [2021-05-22 01:58:02,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:02,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:02,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:02,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:02,124 INFO L87 Difference]: Start difference. First operand 5143 states and 24441 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:02,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:02,243 INFO L93 Difference]: Finished difference Result 10777 states and 48115 transitions. [2021-05-22 01:58:02,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:02,243 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:02,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:02,269 INFO L225 Difference]: With dead ends: 10777 [2021-05-22 01:58:02,269 INFO L226 Difference]: Without dead ends: 10362 [2021-05-22 01:58:02,269 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:02,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10362 states. [2021-05-22 01:58:02,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10362 to 5191. [2021-05-22 01:58:02,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.743159922928709) internal successors, (24617), 5190 states have internal predecessors, (24617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:02,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24617 transitions. [2021-05-22 01:58:02,489 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24617 transitions. Word has length 29 [2021-05-22 01:58:02,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:02,489 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24617 transitions. [2021-05-22 01:58:02,489 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:02,489 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24617 transitions. [2021-05-22 01:58:02,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:02,498 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:02,498 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:02,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-05-22 01:58:02,498 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:02,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:02,498 INFO L82 PathProgramCache]: Analyzing trace with hash -2059595381, now seen corresponding path program 88 times [2021-05-22 01:58:02,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:02,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665514714] [2021-05-22 01:58:02,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:02,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:02,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665514714] [2021-05-22 01:58:02,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665514714] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:02,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:02,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:02,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051342023] [2021-05-22 01:58:02,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:02,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:02,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:02,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:02,630 INFO L87 Difference]: Start difference. First operand 5191 states and 24617 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:02,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:02,751 INFO L93 Difference]: Finished difference Result 10837 states and 48331 transitions. [2021-05-22 01:58:02,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:02,751 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:02,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:02,776 INFO L225 Difference]: With dead ends: 10837 [2021-05-22 01:58:02,777 INFO L226 Difference]: Without dead ends: 10314 [2021-05-22 01:58:02,777 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:02,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10314 states. [2021-05-22 01:58:03,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10314 to 5143. [2021-05-22 01:58:03,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.750097238428627) internal successors, (24425), 5142 states have internal predecessors, (24425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:03,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24425 transitions. [2021-05-22 01:58:03,040 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24425 transitions. Word has length 29 [2021-05-22 01:58:03,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:03,040 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24425 transitions. [2021-05-22 01:58:03,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:03,041 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24425 transitions. [2021-05-22 01:58:03,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:03,049 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:03,049 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:03,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-05-22 01:58:03,050 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:03,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:03,050 INFO L82 PathProgramCache]: Analyzing trace with hash 151539045, now seen corresponding path program 89 times [2021-05-22 01:58:03,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:03,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459529413] [2021-05-22 01:58:03,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:03,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:03,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:03,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459529413] [2021-05-22 01:58:03,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459529413] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:03,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:03,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:03,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243352061] [2021-05-22 01:58:03,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:03,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:03,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:03,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:03,211 INFO L87 Difference]: Start difference. First operand 5143 states and 24425 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:03,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:03,337 INFO L93 Difference]: Finished difference Result 10777 states and 48099 transitions. [2021-05-22 01:58:03,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:03,338 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:03,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:03,364 INFO L225 Difference]: With dead ends: 10777 [2021-05-22 01:58:03,364 INFO L226 Difference]: Without dead ends: 10362 [2021-05-22 01:58:03,364 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 163.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:03,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10362 states. [2021-05-22 01:58:03,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10362 to 5191. [2021-05-22 01:58:03,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.740077071290944) internal successors, (24601), 5190 states have internal predecessors, (24601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:03,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24601 transitions. [2021-05-22 01:58:03,591 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24601 transitions. Word has length 29 [2021-05-22 01:58:03,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:03,591 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24601 transitions. [2021-05-22 01:58:03,591 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:03,591 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24601 transitions. [2021-05-22 01:58:03,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:03,599 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:03,599 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:03,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-05-22 01:58:03,600 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:03,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:03,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1232601671, now seen corresponding path program 90 times [2021-05-22 01:58:03,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:03,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011827576] [2021-05-22 01:58:03,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:03,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:03,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:03,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011827576] [2021-05-22 01:58:03,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011827576] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:03,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:03,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:03,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687743084] [2021-05-22 01:58:03,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:03,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:03,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:03,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:03,744 INFO L87 Difference]: Start difference. First operand 5191 states and 24601 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:03,849 INFO L93 Difference]: Finished difference Result 10837 states and 48315 transitions. [2021-05-22 01:58:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:03,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:03,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:03,875 INFO L225 Difference]: With dead ends: 10837 [2021-05-22 01:58:03,875 INFO L226 Difference]: Without dead ends: 10298 [2021-05-22 01:58:03,875 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:03,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10298 states. [2021-05-22 01:58:04,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10298 to 5127. [2021-05-22 01:58:04,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 5126 states have (on average 4.753999219664456) internal successors, (24369), 5126 states have internal predecessors, (24369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 24369 transitions. [2021-05-22 01:58:04,099 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 24369 transitions. Word has length 29 [2021-05-22 01:58:04,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:04,099 INFO L482 AbstractCegarLoop]: Abstraction has 5127 states and 24369 transitions. [2021-05-22 01:58:04,099 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:04,099 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 24369 transitions. [2021-05-22 01:58:04,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:04,108 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:04,108 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:04,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-05-22 01:58:04,108 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:04,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:04,108 INFO L82 PathProgramCache]: Analyzing trace with hash 9935333, now seen corresponding path program 91 times [2021-05-22 01:58:04,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:04,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521546174] [2021-05-22 01:58:04,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:04,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:04,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:04,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521546174] [2021-05-22 01:58:04,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521546174] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:04,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:04,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:04,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010091141] [2021-05-22 01:58:04,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:04,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:04,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:04,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:04,234 INFO L87 Difference]: Start difference. First operand 5127 states and 24369 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:04,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:04,338 INFO L93 Difference]: Finished difference Result 10957 states and 48937 transitions. [2021-05-22 01:58:04,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:04,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:04,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:04,366 INFO L225 Difference]: With dead ends: 10957 [2021-05-22 01:58:04,366 INFO L226 Difference]: Without dead ends: 10480 [2021-05-22 01:58:04,366 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:04,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10480 states. [2021-05-22 01:58:04,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10480 to 5199. [2021-05-22 01:58:04,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 4.7458637937668335) internal successors, (24669), 5198 states have internal predecessors, (24669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:04,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 24669 transitions. [2021-05-22 01:58:04,599 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 24669 transitions. Word has length 29 [2021-05-22 01:58:04,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:04,600 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 24669 transitions. [2021-05-22 01:58:04,600 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:04,600 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 24669 transitions. [2021-05-22 01:58:04,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:04,608 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:04,608 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:04,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-05-22 01:58:04,609 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:04,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:04,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1090997959, now seen corresponding path program 92 times [2021-05-22 01:58:04,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:04,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092136196] [2021-05-22 01:58:04,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:04,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:04,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092136196] [2021-05-22 01:58:04,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092136196] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:04,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:04,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:04,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553620892] [2021-05-22 01:58:04,736 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:04,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:04,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:04,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:04,736 INFO L87 Difference]: Start difference. First operand 5199 states and 24669 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:04,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:04,824 INFO L93 Difference]: Finished difference Result 10895 states and 48620 transitions. [2021-05-22 01:58:04,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:04,825 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:04,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:04,851 INFO L225 Difference]: With dead ends: 10895 [2021-05-22 01:58:04,851 INFO L226 Difference]: Without dead ends: 10432 [2021-05-22 01:58:04,852 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:04,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10432 states. [2021-05-22 01:58:05,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10432 to 5151. [2021-05-22 01:58:05,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5151 states, 5150 states have (on average 4.75126213592233) internal successors, (24469), 5150 states have internal predecessors, (24469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:05,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5151 states to 5151 states and 24469 transitions. [2021-05-22 01:58:05,077 INFO L78 Accepts]: Start accepts. Automaton has 5151 states and 24469 transitions. Word has length 29 [2021-05-22 01:58:05,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:05,077 INFO L482 AbstractCegarLoop]: Abstraction has 5151 states and 24469 transitions. [2021-05-22 01:58:05,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:05,077 INFO L276 IsEmpty]: Start isEmpty. Operand 5151 states and 24469 transitions. [2021-05-22 01:58:05,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:05,085 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:05,086 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:05,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-05-22 01:58:05,086 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:05,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:05,086 INFO L82 PathProgramCache]: Analyzing trace with hash -470966713, now seen corresponding path program 93 times [2021-05-22 01:58:05,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:05,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844627998] [2021-05-22 01:58:05,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:05,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:05,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844627998] [2021-05-22 01:58:05,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844627998] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:05,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:05,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:05,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256134059] [2021-05-22 01:58:05,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:05,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:05,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:05,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:05,210 INFO L87 Difference]: Start difference. First operand 5151 states and 24469 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:05,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:05,316 INFO L93 Difference]: Finished difference Result 11047 states and 49324 transitions. [2021-05-22 01:58:05,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:05,317 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:05,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:05,345 INFO L225 Difference]: With dead ends: 11047 [2021-05-22 01:58:05,345 INFO L226 Difference]: Without dead ends: 10570 [2021-05-22 01:58:05,345 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:05,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10570 states. [2021-05-22 01:58:05,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10570 to 5229. [2021-05-22 01:58:05,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5228 states have (on average 4.736419280795715) internal successors, (24762), 5228 states have internal predecessors, (24762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:05,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 24762 transitions. [2021-05-22 01:58:05,573 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 24762 transitions. Word has length 29 [2021-05-22 01:58:05,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:05,573 INFO L482 AbstractCegarLoop]: Abstraction has 5229 states and 24762 transitions. [2021-05-22 01:58:05,573 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:05,573 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 24762 transitions. [2021-05-22 01:58:05,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:05,581 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:05,581 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:05,582 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-05-22 01:58:05,582 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:05,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:05,582 INFO L82 PathProgramCache]: Analyzing trace with hash 2135754311, now seen corresponding path program 94 times [2021-05-22 01:58:05,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:05,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293894822] [2021-05-22 01:58:05,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:05,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:05,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:05,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293894822] [2021-05-22 01:58:05,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293894822] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:05,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:05,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:05,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344460054] [2021-05-22 01:58:05,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:05,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:05,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:05,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:05,700 INFO L87 Difference]: Start difference. First operand 5229 states and 24762 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:05,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:05,805 INFO L93 Difference]: Finished difference Result 11045 states and 49241 transitions. [2021-05-22 01:58:05,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:05,806 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:05,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:05,832 INFO L225 Difference]: With dead ends: 11045 [2021-05-22 01:58:05,832 INFO L226 Difference]: Without dead ends: 10492 [2021-05-22 01:58:05,832 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:05,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10492 states. [2021-05-22 01:58:06,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10492 to 5151. [2021-05-22 01:58:06,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5151 states, 5150 states have (on average 4.746601941747572) internal successors, (24445), 5150 states have internal predecessors, (24445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:06,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5151 states to 5151 states and 24445 transitions. [2021-05-22 01:58:06,059 INFO L78 Accepts]: Start accepts. Automaton has 5151 states and 24445 transitions. Word has length 29 [2021-05-22 01:58:06,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:06,059 INFO L482 AbstractCegarLoop]: Abstraction has 5151 states and 24445 transitions. [2021-05-22 01:58:06,059 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:06,059 INFO L276 IsEmpty]: Start isEmpty. Operand 5151 states and 24445 transitions. [2021-05-22 01:58:06,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:06,067 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:06,067 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:06,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-05-22 01:58:06,067 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:06,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:06,068 INFO L82 PathProgramCache]: Analyzing trace with hash -82961751, now seen corresponding path program 95 times [2021-05-22 01:58:06,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:06,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385145448] [2021-05-22 01:58:06,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:06,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:06,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:06,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385145448] [2021-05-22 01:58:06,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385145448] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:06,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:06,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:06,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400860589] [2021-05-22 01:58:06,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:06,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:06,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:06,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:06,223 INFO L87 Difference]: Start difference. First operand 5151 states and 24445 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:06,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:06,337 INFO L93 Difference]: Finished difference Result 10893 states and 48615 transitions. [2021-05-22 01:58:06,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:06,338 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:06,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:06,368 INFO L225 Difference]: With dead ends: 10893 [2021-05-22 01:58:06,369 INFO L226 Difference]: Without dead ends: 10478 [2021-05-22 01:58:06,369 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 154.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:06,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10478 states. [2021-05-22 01:58:06,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10478 to 5199. [2021-05-22 01:58:06,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 4.736629472874182) internal successors, (24621), 5198 states have internal predecessors, (24621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 24621 transitions. [2021-05-22 01:58:06,592 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 24621 transitions. Word has length 29 [2021-05-22 01:58:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:06,593 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 24621 transitions. [2021-05-22 01:58:06,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:06,593 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 24621 transitions. [2021-05-22 01:58:06,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:06,601 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:06,601 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:06,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-05-22 01:58:06,601 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:06,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:06,601 INFO L82 PathProgramCache]: Analyzing trace with hash -929758713, now seen corresponding path program 96 times [2021-05-22 01:58:06,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:06,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906738803] [2021-05-22 01:58:06,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:06,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:06,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906738803] [2021-05-22 01:58:06,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906738803] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:06,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:06,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:06,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177300622] [2021-05-22 01:58:06,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:06,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:06,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:06,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:06,731 INFO L87 Difference]: Start difference. First operand 5199 states and 24621 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:06,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:06,838 INFO L93 Difference]: Finished difference Result 10953 states and 48831 transitions. [2021-05-22 01:58:06,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:06,838 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:06,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:06,864 INFO L225 Difference]: With dead ends: 10953 [2021-05-22 01:58:06,864 INFO L226 Difference]: Without dead ends: 10398 [2021-05-22 01:58:06,864 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:06,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10398 states. [2021-05-22 01:58:07,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10398 to 5119. [2021-05-22 01:58:07,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 5118 states have (on average 4.756740914419695) internal successors, (24345), 5118 states have internal predecessors, (24345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 24345 transitions. [2021-05-22 01:58:07,087 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 24345 transitions. Word has length 29 [2021-05-22 01:58:07,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:07,087 INFO L482 AbstractCegarLoop]: Abstraction has 5119 states and 24345 transitions. [2021-05-22 01:58:07,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:07,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 24345 transitions. [2021-05-22 01:58:07,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:07,096 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:07,096 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:07,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-05-22 01:58:07,096 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:07,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:07,096 INFO L82 PathProgramCache]: Analyzing trace with hash 911279811, now seen corresponding path program 97 times [2021-05-22 01:58:07,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:07,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338702001] [2021-05-22 01:58:07,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:07,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:07,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:07,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338702001] [2021-05-22 01:58:07,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338702001] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:07,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:07,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:07,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322671754] [2021-05-22 01:58:07,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:07,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:07,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:07,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:07,222 INFO L87 Difference]: Start difference. First operand 5119 states and 24345 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:07,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:07,312 INFO L93 Difference]: Finished difference Result 11927 states and 53123 transitions. [2021-05-22 01:58:07,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:07,312 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:07,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:07,341 INFO L225 Difference]: With dead ends: 11927 [2021-05-22 01:58:07,341 INFO L226 Difference]: Without dead ends: 11385 [2021-05-22 01:58:07,342 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:07,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11385 states. [2021-05-22 01:58:07,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11385 to 5354. [2021-05-22 01:58:07,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5354 states, 5353 states have (on average 4.7278161778442) internal successors, (25308), 5353 states have internal predecessors, (25308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5354 states to 5354 states and 25308 transitions. [2021-05-22 01:58:07,580 INFO L78 Accepts]: Start accepts. Automaton has 5354 states and 25308 transitions. Word has length 29 [2021-05-22 01:58:07,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:07,580 INFO L482 AbstractCegarLoop]: Abstraction has 5354 states and 25308 transitions. [2021-05-22 01:58:07,580 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:07,580 INFO L276 IsEmpty]: Start isEmpty. Operand 5354 states and 25308 transitions. [2021-05-22 01:58:07,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:07,589 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:07,589 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:07,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-05-22 01:58:07,589 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:07,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:07,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1992342437, now seen corresponding path program 98 times [2021-05-22 01:58:07,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:07,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015908176] [2021-05-22 01:58:07,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:07,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:07,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:07,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015908176] [2021-05-22 01:58:07,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015908176] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:07,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:07,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:07,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807253381] [2021-05-22 01:58:07,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:07,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:07,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:07,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:07,708 INFO L87 Difference]: Start difference. First operand 5354 states and 25308 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:07,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:07,819 INFO L93 Difference]: Finished difference Result 11862 states and 52754 transitions. [2021-05-22 01:58:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:07,819 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:07,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:07,847 INFO L225 Difference]: With dead ends: 11862 [2021-05-22 01:58:07,847 INFO L226 Difference]: Without dead ends: 11242 [2021-05-22 01:58:07,848 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:07,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11242 states. [2021-05-22 01:58:08,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11242 to 5211. [2021-05-22 01:58:08,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5211 states, 5210 states have (on average 4.747216890595009) internal successors, (24733), 5210 states have internal predecessors, (24733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:08,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5211 states to 5211 states and 24733 transitions. [2021-05-22 01:58:08,076 INFO L78 Accepts]: Start accepts. Automaton has 5211 states and 24733 transitions. Word has length 29 [2021-05-22 01:58:08,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:08,076 INFO L482 AbstractCegarLoop]: Abstraction has 5211 states and 24733 transitions. [2021-05-22 01:58:08,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:08,077 INFO L276 IsEmpty]: Start isEmpty. Operand 5211 states and 24733 transitions. [2021-05-22 01:58:08,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:08,085 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:08,085 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:08,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-05-22 01:58:08,085 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:08,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:08,085 INFO L82 PathProgramCache]: Analyzing trace with hash 430377765, now seen corresponding path program 99 times [2021-05-22 01:58:08,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:08,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073010552] [2021-05-22 01:58:08,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:08,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:08,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:08,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073010552] [2021-05-22 01:58:08,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073010552] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:08,208 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:08,208 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:08,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6740348] [2021-05-22 01:58:08,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:08,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:08,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:08,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:08,209 INFO L87 Difference]: Start difference. First operand 5211 states and 24733 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:08,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:08,308 INFO L93 Difference]: Finished difference Result 11802 states and 52536 transitions. [2021-05-22 01:58:08,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:08,309 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:08,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:08,336 INFO L225 Difference]: With dead ends: 11802 [2021-05-22 01:58:08,337 INFO L226 Difference]: Without dead ends: 11260 [2021-05-22 01:58:08,337 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:08,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11260 states. [2021-05-22 01:58:08,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11260 to 5291. [2021-05-22 01:58:08,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5291 states, 5290 states have (on average 4.729867674858223) internal successors, (25021), 5290 states have internal predecessors, (25021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:08,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5291 states to 5291 states and 25021 transitions. [2021-05-22 01:58:08,567 INFO L78 Accepts]: Start accepts. Automaton has 5291 states and 25021 transitions. Word has length 29 [2021-05-22 01:58:08,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:08,567 INFO L482 AbstractCegarLoop]: Abstraction has 5291 states and 25021 transitions. [2021-05-22 01:58:08,567 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:08,567 INFO L276 IsEmpty]: Start isEmpty. Operand 5291 states and 25021 transitions. [2021-05-22 01:58:08,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:08,576 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:08,576 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:08,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-05-22 01:58:08,576 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:08,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:08,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1257868507, now seen corresponding path program 100 times [2021-05-22 01:58:08,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:08,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617298136] [2021-05-22 01:58:08,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:08,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:08,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:08,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617298136] [2021-05-22 01:58:08,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617298136] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:08,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:08,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:08,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795587738] [2021-05-22 01:58:08,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:08,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:08,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:08,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:08,702 INFO L87 Difference]: Start difference. First operand 5291 states and 25021 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:08,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:08,796 INFO L93 Difference]: Finished difference Result 11675 states and 51929 transitions. [2021-05-22 01:58:08,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:08,796 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:08,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:08,824 INFO L225 Difference]: With dead ends: 11675 [2021-05-22 01:58:08,824 INFO L226 Difference]: Without dead ends: 11180 [2021-05-22 01:58:08,824 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:08,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11180 states. [2021-05-22 01:58:09,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11180 to 5211. [2021-05-22 01:58:09,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5211 states, 5210 states have (on average 4.739539347408829) internal successors, (24693), 5210 states have internal predecessors, (24693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:09,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5211 states to 5211 states and 24693 transitions. [2021-05-22 01:58:09,056 INFO L78 Accepts]: Start accepts. Automaton has 5211 states and 24693 transitions. Word has length 29 [2021-05-22 01:58:09,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:09,056 INFO L482 AbstractCegarLoop]: Abstraction has 5211 states and 24693 transitions. [2021-05-22 01:58:09,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:09,056 INFO L276 IsEmpty]: Start isEmpty. Operand 5211 states and 24693 transitions. [2021-05-22 01:58:09,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:09,065 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:09,065 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:09,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-05-22 01:58:09,065 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:09,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:09,065 INFO L82 PathProgramCache]: Analyzing trace with hash 818382727, now seen corresponding path program 101 times [2021-05-22 01:58:09,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:09,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640271695] [2021-05-22 01:58:09,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:09,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:09,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640271695] [2021-05-22 01:58:09,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640271695] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:09,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:09,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:09,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11566429] [2021-05-22 01:58:09,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:09,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:09,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:09,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:09,195 INFO L87 Difference]: Start difference. First operand 5211 states and 24693 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:09,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:09,360 INFO L93 Difference]: Finished difference Result 11640 states and 51836 transitions. [2021-05-22 01:58:09,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:09,361 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:09,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:09,396 INFO L225 Difference]: With dead ends: 11640 [2021-05-22 01:58:09,397 INFO L226 Difference]: Without dead ends: 11163 [2021-05-22 01:58:09,397 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:09,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11163 states. [2021-05-22 01:58:09,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11163 to 5259. [2021-05-22 01:58:09,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5259 states, 5258 states have (on average 4.7297451502472425) internal successors, (24869), 5258 states have internal predecessors, (24869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:09,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5259 states to 5259 states and 24869 transitions. [2021-05-22 01:58:09,638 INFO L78 Accepts]: Start accepts. Automaton has 5259 states and 24869 transitions. Word has length 29 [2021-05-22 01:58:09,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:09,638 INFO L482 AbstractCegarLoop]: Abstraction has 5259 states and 24869 transitions. [2021-05-22 01:58:09,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:09,638 INFO L276 IsEmpty]: Start isEmpty. Operand 5259 states and 24869 transitions. [2021-05-22 01:58:09,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:09,647 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:09,647 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:09,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-05-22 01:58:09,647 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:09,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:09,647 INFO L82 PathProgramCache]: Analyzing trace with hash -28414235, now seen corresponding path program 102 times [2021-05-22 01:58:09,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:09,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460620534] [2021-05-22 01:58:09,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:09,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:09,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460620534] [2021-05-22 01:58:09,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460620534] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:09,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:09,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:09,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997796878] [2021-05-22 01:58:09,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:09,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:09,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:09,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:09,804 INFO L87 Difference]: Start difference. First operand 5259 states and 24869 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:09,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:09,895 INFO L93 Difference]: Finished difference Result 11578 states and 51519 transitions. [2021-05-22 01:58:09,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:09,895 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:09,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:09,922 INFO L225 Difference]: With dead ends: 11578 [2021-05-22 01:58:09,922 INFO L226 Difference]: Without dead ends: 11059 [2021-05-22 01:58:09,923 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 154.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:10,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11059 states. [2021-05-22 01:58:10,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11059 to 5155. [2021-05-22 01:58:10,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.752231276678308) internal successors, (24493), 5154 states have internal predecessors, (24493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:10,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24493 transitions. [2021-05-22 01:58:10,148 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24493 transitions. Word has length 29 [2021-05-22 01:58:10,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:10,148 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24493 transitions. [2021-05-22 01:58:10,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:10,148 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24493 transitions. [2021-05-22 01:58:10,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:10,157 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:10,157 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:10,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-05-22 01:58:10,157 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:10,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:10,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1674085723, now seen corresponding path program 103 times [2021-05-22 01:58:10,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:10,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932718076] [2021-05-22 01:58:10,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:10,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:10,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:10,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932718076] [2021-05-22 01:58:10,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932718076] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:10,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:10,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:10,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45436732] [2021-05-22 01:58:10,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:10,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:10,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:10,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:10,267 INFO L87 Difference]: Start difference. First operand 5155 states and 24493 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:10,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:10,360 INFO L93 Difference]: Finished difference Result 12078 states and 53782 transitions. [2021-05-22 01:58:10,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:10,360 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:10,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:10,388 INFO L225 Difference]: With dead ends: 12078 [2021-05-22 01:58:10,388 INFO L226 Difference]: Without dead ends: 11536 [2021-05-22 01:58:10,389 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 111.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:10,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11536 states. [2021-05-22 01:58:10,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11536 to 5385. [2021-05-22 01:58:10,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5385 states, 5384 states have (on average 4.719353640416047) internal successors, (25409), 5384 states have internal predecessors, (25409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:10,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5385 states to 5385 states and 25409 transitions. [2021-05-22 01:58:10,623 INFO L78 Accepts]: Start accepts. Automaton has 5385 states and 25409 transitions. Word has length 29 [2021-05-22 01:58:10,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:10,623 INFO L482 AbstractCegarLoop]: Abstraction has 5385 states and 25409 transitions. [2021-05-22 01:58:10,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:10,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5385 states and 25409 transitions. [2021-05-22 01:58:10,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:10,632 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:10,632 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:10,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-05-22 01:58:10,632 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:10,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:10,632 INFO L82 PathProgramCache]: Analyzing trace with hash -593023097, now seen corresponding path program 104 times [2021-05-22 01:58:10,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:10,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943072531] [2021-05-22 01:58:10,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:10,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:10,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943072531] [2021-05-22 01:58:10,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943072531] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:10,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:10,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:10,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724096421] [2021-05-22 01:58:10,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:10,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:10,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:10,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:10,742 INFO L87 Difference]: Start difference. First operand 5385 states and 25409 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:10,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:10,852 INFO L93 Difference]: Finished difference Result 12013 states and 53413 transitions. [2021-05-22 01:58:10,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:10,853 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:10,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:10,880 INFO L225 Difference]: With dead ends: 12013 [2021-05-22 01:58:10,881 INFO L226 Difference]: Without dead ends: 11393 [2021-05-22 01:58:10,881 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:10,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11393 states. [2021-05-22 01:58:11,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11393 to 5242. [2021-05-22 01:58:11,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5242 states, 5241 states have (on average 4.735546651402404) internal successors, (24819), 5241 states have internal predecessors, (24819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:11,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5242 states to 5242 states and 24819 transitions. [2021-05-22 01:58:11,113 INFO L78 Accepts]: Start accepts. Automaton has 5242 states and 24819 transitions. Word has length 29 [2021-05-22 01:58:11,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:11,113 INFO L482 AbstractCegarLoop]: Abstraction has 5242 states and 24819 transitions. [2021-05-22 01:58:11,113 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:11,113 INFO L276 IsEmpty]: Start isEmpty. Operand 5242 states and 24819 transitions. [2021-05-22 01:58:11,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:11,121 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:11,121 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:11,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-05-22 01:58:11,122 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:11,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:11,122 INFO L82 PathProgramCache]: Analyzing trace with hash -581115227, now seen corresponding path program 105 times [2021-05-22 01:58:11,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:11,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120469717] [2021-05-22 01:58:11,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:11,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:11,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120469717] [2021-05-22 01:58:11,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120469717] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:11,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:11,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:11,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686838179] [2021-05-22 01:58:11,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:11,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:11,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:11,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:11,243 INFO L87 Difference]: Start difference. First operand 5242 states and 24819 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:11,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:11,341 INFO L93 Difference]: Finished difference Result 12043 states and 53591 transitions. [2021-05-22 01:58:11,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:11,341 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:11,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:11,370 INFO L225 Difference]: With dead ends: 12043 [2021-05-22 01:58:11,370 INFO L226 Difference]: Without dead ends: 11501 [2021-05-22 01:58:11,370 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 111.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:11,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11501 states. [2021-05-22 01:58:11,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11501 to 5352. [2021-05-22 01:58:11,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5352 states, 5351 states have (on average 4.713885255092506) internal successors, (25224), 5351 states have internal predecessors, (25224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:11,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5352 states to 5352 states and 25224 transitions. [2021-05-22 01:58:11,602 INFO L78 Accepts]: Start accepts. Automaton has 5352 states and 25224 transitions. Word has length 29 [2021-05-22 01:58:11,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:11,602 INFO L482 AbstractCegarLoop]: Abstraction has 5352 states and 25224 transitions. [2021-05-22 01:58:11,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:11,602 INFO L276 IsEmpty]: Start isEmpty. Operand 5352 states and 25224 transitions. [2021-05-22 01:58:11,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:11,611 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:11,611 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:11,611 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-05-22 01:58:11,611 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:11,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:11,611 INFO L82 PathProgramCache]: Analyzing trace with hash -531547483, now seen corresponding path program 106 times [2021-05-22 01:58:11,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:11,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128099289] [2021-05-22 01:58:11,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:11,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:11,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:11,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128099289] [2021-05-22 01:58:11,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128099289] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:11,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:11,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:11,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350855121] [2021-05-22 01:58:11,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:11,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:11,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:11,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:11,718 INFO L87 Difference]: Start difference. First operand 5352 states and 25224 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:11,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:11,834 INFO L93 Difference]: Finished difference Result 11976 states and 53218 transitions. [2021-05-22 01:58:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:11,834 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:11,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:11,862 INFO L225 Difference]: With dead ends: 11976 [2021-05-22 01:58:11,862 INFO L226 Difference]: Without dead ends: 11391 [2021-05-22 01:58:11,863 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:11,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11391 states. [2021-05-22 01:58:12,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11391 to 5242. [2021-05-22 01:58:12,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5242 states, 5241 states have (on average 4.7250524709025) internal successors, (24764), 5241 states have internal predecessors, (24764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5242 states to 5242 states and 24764 transitions. [2021-05-22 01:58:12,093 INFO L78 Accepts]: Start accepts. Automaton has 5242 states and 24764 transitions. Word has length 29 [2021-05-22 01:58:12,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:12,093 INFO L482 AbstractCegarLoop]: Abstraction has 5242 states and 24764 transitions. [2021-05-22 01:58:12,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:12,093 INFO L276 IsEmpty]: Start isEmpty. Operand 5242 states and 24764 transitions. [2021-05-22 01:58:12,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:12,102 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:12,102 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:12,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-05-22 01:58:12,102 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:12,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:12,102 INFO L82 PathProgramCache]: Analyzing trace with hash -193110265, now seen corresponding path program 107 times [2021-05-22 01:58:12,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:12,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18957946] [2021-05-22 01:58:12,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:12,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:12,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:12,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18957946] [2021-05-22 01:58:12,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18957946] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:12,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:12,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:12,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160944182] [2021-05-22 01:58:12,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:12,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:12,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:12,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:12,215 INFO L87 Difference]: Start difference. First operand 5242 states and 24764 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:12,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:12,320 INFO L93 Difference]: Finished difference Result 11881 states and 52876 transitions. [2021-05-22 01:58:12,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:12,320 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:12,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:12,348 INFO L225 Difference]: With dead ends: 11881 [2021-05-22 01:58:12,348 INFO L226 Difference]: Without dead ends: 11404 [2021-05-22 01:58:12,348 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:12,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11404 states. [2021-05-22 01:58:12,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11404 to 5320. [2021-05-22 01:58:12,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5320 states, 5319 states have (on average 4.710847903741305) internal successors, (25057), 5319 states have internal predecessors, (25057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:12,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5320 states to 5320 states and 25057 transitions. [2021-05-22 01:58:12,579 INFO L78 Accepts]: Start accepts. Automaton has 5320 states and 25057 transitions. Word has length 29 [2021-05-22 01:58:12,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:12,580 INFO L482 AbstractCegarLoop]: Abstraction has 5320 states and 25057 transitions. [2021-05-22 01:58:12,580 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:12,580 INFO L276 IsEmpty]: Start isEmpty. Operand 5320 states and 25057 transitions. [2021-05-22 01:58:12,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:12,588 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:12,588 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:12,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-05-22 01:58:12,588 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:12,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:12,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1985777381, now seen corresponding path program 108 times [2021-05-22 01:58:12,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:12,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547066932] [2021-05-22 01:58:12,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:12,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:12,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547066932] [2021-05-22 01:58:12,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547066932] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:12,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:12,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:12,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727994478] [2021-05-22 01:58:12,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:12,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:12,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:12,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:12,699 INFO L87 Difference]: Start difference. First operand 5320 states and 25057 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:12,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:12,810 INFO L93 Difference]: Finished difference Result 11879 states and 52793 transitions. [2021-05-22 01:58:12,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:12,810 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:12,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:12,837 INFO L225 Difference]: With dead ends: 11879 [2021-05-22 01:58:12,837 INFO L226 Difference]: Without dead ends: 11239 [2021-05-22 01:58:12,838 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:12,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11239 states. [2021-05-22 01:58:13,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11239 to 5155. [2021-05-22 01:58:13,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.745246410554909) internal successors, (24457), 5154 states have internal predecessors, (24457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:13,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24457 transitions. [2021-05-22 01:58:13,139 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24457 transitions. Word has length 29 [2021-05-22 01:58:13,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:13,139 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24457 transitions. [2021-05-22 01:58:13,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:13,139 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24457 transitions. [2021-05-22 01:58:13,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:13,148 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:13,148 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:13,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-05-22 01:58:13,148 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:13,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:13,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1831495303, now seen corresponding path program 109 times [2021-05-22 01:58:13,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:13,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738563356] [2021-05-22 01:58:13,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:13,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:13,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:13,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738563356] [2021-05-22 01:58:13,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738563356] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:13,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:13,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:13,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761093981] [2021-05-22 01:58:13,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:13,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:13,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:13,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:13,267 INFO L87 Difference]: Start difference. First operand 5155 states and 24457 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:13,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:13,362 INFO L93 Difference]: Finished difference Result 11751 states and 52344 transitions. [2021-05-22 01:58:13,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:13,364 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:13,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:13,392 INFO L225 Difference]: With dead ends: 11751 [2021-05-22 01:58:13,392 INFO L226 Difference]: Without dead ends: 11209 [2021-05-22 01:58:13,392 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:13,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11209 states. [2021-05-22 01:58:13,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11209 to 5275. [2021-05-22 01:58:13,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5275 states, 5274 states have (on average 4.730565036025787) internal successors, (24949), 5274 states have internal predecessors, (24949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:13,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 24949 transitions. [2021-05-22 01:58:13,622 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 24949 transitions. Word has length 29 [2021-05-22 01:58:13,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:13,622 INFO L482 AbstractCegarLoop]: Abstraction has 5275 states and 24949 transitions. [2021-05-22 01:58:13,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:13,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 24949 transitions. [2021-05-22 01:58:13,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:13,631 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:13,631 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:13,631 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-05-22 01:58:13,631 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:13,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:13,631 INFO L82 PathProgramCache]: Analyzing trace with hash 143249031, now seen corresponding path program 110 times [2021-05-22 01:58:13,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:13,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391654235] [2021-05-22 01:58:13,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:13,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:13,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:13,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391654235] [2021-05-22 01:58:13,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391654235] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:13,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:13,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:13,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651075172] [2021-05-22 01:58:13,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:13,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:13,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:13,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:13,757 INFO L87 Difference]: Start difference. First operand 5275 states and 24949 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:13,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:13,851 INFO L93 Difference]: Finished difference Result 11624 states and 51737 transitions. [2021-05-22 01:58:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:13,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:13,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:13,879 INFO L225 Difference]: With dead ends: 11624 [2021-05-22 01:58:13,879 INFO L226 Difference]: Without dead ends: 11129 [2021-05-22 01:58:13,879 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:13,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11129 states. [2021-05-22 01:58:14,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11129 to 5195. [2021-05-22 01:58:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.7402772429726605) internal successors, (24621), 5194 states have internal predecessors, (24621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:14,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24621 transitions. [2021-05-22 01:58:14,107 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24621 transitions. Word has length 29 [2021-05-22 01:58:14,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:14,107 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24621 transitions. [2021-05-22 01:58:14,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:14,107 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24621 transitions. [2021-05-22 01:58:14,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:14,115 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:14,115 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:14,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-05-22 01:58:14,116 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:14,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:14,116 INFO L82 PathProgramCache]: Analyzing trace with hash -191566235, now seen corresponding path program 111 times [2021-05-22 01:58:14,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:14,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051959127] [2021-05-22 01:58:14,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:14,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:14,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:14,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051959127] [2021-05-22 01:58:14,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051959127] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:14,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:14,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:14,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638508956] [2021-05-22 01:58:14,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:14,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:14,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:14,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:14,246 INFO L87 Difference]: Start difference. First operand 5195 states and 24621 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:14,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:14,367 INFO L93 Difference]: Finished difference Result 11841 states and 52715 transitions. [2021-05-22 01:58:14,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:14,367 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:14,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:14,395 INFO L225 Difference]: With dead ends: 11841 [2021-05-22 01:58:14,395 INFO L226 Difference]: Without dead ends: 11299 [2021-05-22 01:58:14,395 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:14,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11299 states. [2021-05-22 01:58:14,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11299 to 5305. [2021-05-22 01:58:14,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5305 states, 5304 states have (on average 4.718325791855204) internal successors, (25026), 5304 states have internal predecessors, (25026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:14,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5305 states to 5305 states and 25026 transitions. [2021-05-22 01:58:14,630 INFO L78 Accepts]: Start accepts. Automaton has 5305 states and 25026 transitions. Word has length 29 [2021-05-22 01:58:14,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:14,630 INFO L482 AbstractCegarLoop]: Abstraction has 5305 states and 25026 transitions. [2021-05-22 01:58:14,630 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:14,630 INFO L276 IsEmpty]: Start isEmpty. Operand 5305 states and 25026 transitions. [2021-05-22 01:58:14,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:14,638 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:14,638 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:14,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-05-22 01:58:14,639 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:14,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:14,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1178054279, now seen corresponding path program 112 times [2021-05-22 01:58:14,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:14,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88972982] [2021-05-22 01:58:14,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:14,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:14,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:14,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88972982] [2021-05-22 01:58:14,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88972982] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:14,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:14,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:14,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977350889] [2021-05-22 01:58:14,766 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:14,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:14,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:14,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:14,766 INFO L87 Difference]: Start difference. First operand 5305 states and 25026 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:14,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:14,917 INFO L93 Difference]: Finished difference Result 11774 states and 52342 transitions. [2021-05-22 01:58:14,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:14,917 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:14,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:14,945 INFO L225 Difference]: With dead ends: 11774 [2021-05-22 01:58:14,945 INFO L226 Difference]: Without dead ends: 11189 [2021-05-22 01:58:14,945 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 153.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:15,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11189 states. [2021-05-22 01:58:15,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11189 to 5195. [2021-05-22 01:58:15,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.73257604928764) internal successors, (24581), 5194 states have internal predecessors, (24581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24581 transitions. [2021-05-22 01:58:15,176 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24581 transitions. Word has length 29 [2021-05-22 01:58:15,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:15,176 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24581 transitions. [2021-05-22 01:58:15,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:15,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24581 transitions. [2021-05-22 01:58:15,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:15,184 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:15,184 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:15,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-05-22 01:58:15,184 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:15,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:15,185 INFO L82 PathProgramCache]: Analyzing trace with hash 533210759, now seen corresponding path program 113 times [2021-05-22 01:58:15,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:15,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779764930] [2021-05-22 01:58:15,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:15,305 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:15,305 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779764930] [2021-05-22 01:58:15,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779764930] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:15,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:15,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:15,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456039289] [2021-05-22 01:58:15,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:15,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:15,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:15,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:15,306 INFO L87 Difference]: Start difference. First operand 5195 states and 24581 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:15,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:15,416 INFO L93 Difference]: Finished difference Result 11525 states and 51330 transitions. [2021-05-22 01:58:15,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:15,416 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:15,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:15,444 INFO L225 Difference]: With dead ends: 11525 [2021-05-22 01:58:15,444 INFO L226 Difference]: Without dead ends: 11110 [2021-05-22 01:58:15,444 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:15,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11110 states. [2021-05-22 01:58:15,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11110 to 5243. [2021-05-22 01:58:15,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 5242 states have (on average 4.722815719191148) internal successors, (24757), 5242 states have internal predecessors, (24757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:15,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 24757 transitions. [2021-05-22 01:58:15,673 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 24757 transitions. Word has length 29 [2021-05-22 01:58:15,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:15,673 INFO L482 AbstractCegarLoop]: Abstraction has 5243 states and 24757 transitions. [2021-05-22 01:58:15,673 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:15,673 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 24757 transitions. [2021-05-22 01:58:15,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:15,682 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:15,682 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:15,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-05-22 01:58:15,682 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:15,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:15,682 INFO L82 PathProgramCache]: Analyzing trace with hash -313586203, now seen corresponding path program 114 times [2021-05-22 01:58:15,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:15,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834119040] [2021-05-22 01:58:15,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:15,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:15,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:15,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834119040] [2021-05-22 01:58:15,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834119040] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:15,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:15,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:15,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178116506] [2021-05-22 01:58:15,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:15,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:15,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:15,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:15,803 INFO L87 Difference]: Start difference. First operand 5243 states and 24757 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:15,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:15,912 INFO L93 Difference]: Finished difference Result 11585 states and 51546 transitions. [2021-05-22 01:58:15,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:15,912 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:15,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:15,939 INFO L225 Difference]: With dead ends: 11585 [2021-05-22 01:58:15,939 INFO L226 Difference]: Without dead ends: 11022 [2021-05-22 01:58:15,939 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:16,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11022 states. [2021-05-22 01:58:16,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11022 to 5155. [2021-05-22 01:58:16,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.741365929375243) internal successors, (24437), 5154 states have internal predecessors, (24437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:16,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24437 transitions. [2021-05-22 01:58:16,166 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24437 transitions. Word has length 29 [2021-05-22 01:58:16,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:16,166 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24437 transitions. [2021-05-22 01:58:16,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:16,167 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24437 transitions. [2021-05-22 01:58:16,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:16,175 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:16,175 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:16,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-05-22 01:58:16,175 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:16,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:16,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1911016041, now seen corresponding path program 115 times [2021-05-22 01:58:16,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:16,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609494486] [2021-05-22 01:58:16,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:16,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:16,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609494486] [2021-05-22 01:58:16,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609494486] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:16,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:16,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:16,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196708912] [2021-05-22 01:58:16,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:16,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:16,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:16,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:16,295 INFO L87 Difference]: Start difference. First operand 5155 states and 24437 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:16,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:16,405 INFO L93 Difference]: Finished difference Result 11444 states and 51038 transitions. [2021-05-22 01:58:16,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:16,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:16,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:16,435 INFO L225 Difference]: With dead ends: 11444 [2021-05-22 01:58:16,435 INFO L226 Difference]: Without dead ends: 10967 [2021-05-22 01:58:16,435 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:16,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10967 states. [2021-05-22 01:58:16,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10967 to 5227. [2021-05-22 01:58:16,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5227 states, 5226 states have (on average 4.733448143895905) internal successors, (24737), 5226 states have internal predecessors, (24737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:16,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5227 states to 5227 states and 24737 transitions. [2021-05-22 01:58:16,664 INFO L78 Accepts]: Start accepts. Automaton has 5227 states and 24737 transitions. Word has length 29 [2021-05-22 01:58:16,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:16,664 INFO L482 AbstractCegarLoop]: Abstraction has 5227 states and 24737 transitions. [2021-05-22 01:58:16,664 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:16,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5227 states and 24737 transitions. [2021-05-22 01:58:16,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:16,673 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:16,673 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:16,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-05-22 01:58:16,673 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:16,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:16,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1064219079, now seen corresponding path program 116 times [2021-05-22 01:58:16,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:16,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703155024] [2021-05-22 01:58:16,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:16,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:16,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703155024] [2021-05-22 01:58:16,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703155024] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:16,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:16,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:16,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494063250] [2021-05-22 01:58:16,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:16,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:16,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:16,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:16,798 INFO L87 Difference]: Start difference. First operand 5227 states and 24737 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:16,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:16,888 INFO L93 Difference]: Finished difference Result 11382 states and 50721 transitions. [2021-05-22 01:58:16,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:16,889 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:16,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:16,916 INFO L225 Difference]: With dead ends: 11382 [2021-05-22 01:58:16,916 INFO L226 Difference]: Without dead ends: 10919 [2021-05-22 01:58:16,916 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:17,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10919 states. [2021-05-22 01:58:17,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10919 to 5179. [2021-05-22 01:58:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.738702201622248) internal successors, (24537), 5178 states have internal predecessors, (24537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:17,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24537 transitions. [2021-05-22 01:58:17,147 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24537 transitions. Word has length 29 [2021-05-22 01:58:17,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:17,147 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24537 transitions. [2021-05-22 01:58:17,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:17,147 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24537 transitions. [2021-05-22 01:58:17,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:17,155 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:17,156 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:17,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-05-22 01:58:17,156 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:17,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:17,156 INFO L82 PathProgramCache]: Analyzing trace with hash -112045497, now seen corresponding path program 117 times [2021-05-22 01:58:17,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:17,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841618481] [2021-05-22 01:58:17,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:17,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:17,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:17,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841618481] [2021-05-22 01:58:17,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841618481] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:17,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:17,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:17,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841918229] [2021-05-22 01:58:17,271 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:17,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:17,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:17,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:17,271 INFO L87 Difference]: Start difference. First operand 5179 states and 24537 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:17,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:17,380 INFO L93 Difference]: Finished difference Result 11534 states and 51425 transitions. [2021-05-22 01:58:17,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:17,381 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:17,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:17,409 INFO L225 Difference]: With dead ends: 11534 [2021-05-22 01:58:17,409 INFO L226 Difference]: Without dead ends: 11057 [2021-05-22 01:58:17,409 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:17,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11057 states. [2021-05-22 01:58:17,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11057 to 5257. [2021-05-22 01:58:17,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5256 states have (on average 4.724124809741248) internal successors, (24830), 5256 states have internal predecessors, (24830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:17,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 24830 transitions. [2021-05-22 01:58:17,644 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 24830 transitions. Word has length 29 [2021-05-22 01:58:17,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:17,644 INFO L482 AbstractCegarLoop]: Abstraction has 5257 states and 24830 transitions. [2021-05-22 01:58:17,644 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:17,644 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 24830 transitions. [2021-05-22 01:58:17,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:17,653 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:17,653 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:17,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-05-22 01:58:17,653 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:17,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:17,654 INFO L82 PathProgramCache]: Analyzing trace with hash -908072377, now seen corresponding path program 118 times [2021-05-22 01:58:17,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:17,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810194588] [2021-05-22 01:58:17,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:17,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:17,770 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:17,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810194588] [2021-05-22 01:58:17,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810194588] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:17,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:17,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:17,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736678226] [2021-05-22 01:58:17,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:17,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:17,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:17,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:17,771 INFO L87 Difference]: Start difference. First operand 5257 states and 24830 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:17,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:17,880 INFO L93 Difference]: Finished difference Result 11532 states and 51342 transitions. [2021-05-22 01:58:17,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:17,880 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:17,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:17,908 INFO L225 Difference]: With dead ends: 11532 [2021-05-22 01:58:17,908 INFO L226 Difference]: Without dead ends: 10979 [2021-05-22 01:58:17,908 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:18,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10979 states. [2021-05-22 01:58:18,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10979 to 5179. [2021-05-22 01:58:18,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.734067207415991) internal successors, (24513), 5178 states have internal predecessors, (24513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:18,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24513 transitions. [2021-05-22 01:58:18,140 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24513 transitions. Word has length 29 [2021-05-22 01:58:18,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:18,140 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24513 transitions. [2021-05-22 01:58:18,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:18,140 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24513 transitions. [2021-05-22 01:58:18,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:18,149 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:18,149 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:18,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-05-22 01:58:18,149 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:18,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:18,149 INFO L82 PathProgramCache]: Analyzing trace with hash -968793563, now seen corresponding path program 119 times [2021-05-22 01:58:18,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:18,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368604142] [2021-05-22 01:58:18,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:18,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:18,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:18,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368604142] [2021-05-22 01:58:18,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368604142] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:18,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:18,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:18,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854169380] [2021-05-22 01:58:18,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:18,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:18,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:18,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:18,277 INFO L87 Difference]: Start difference. First operand 5179 states and 24513 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:18,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:18,369 INFO L93 Difference]: Finished difference Result 11380 states and 50716 transitions. [2021-05-22 01:58:18,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:18,370 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:18,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:18,397 INFO L225 Difference]: With dead ends: 11380 [2021-05-22 01:58:18,398 INFO L226 Difference]: Without dead ends: 10965 [2021-05-22 01:58:18,398 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:18,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10965 states. [2021-05-22 01:58:18,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10965 to 5227. [2021-05-22 01:58:18,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5227 states, 5226 states have (on average 4.724263298890165) internal successors, (24689), 5226 states have internal predecessors, (24689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:18,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5227 states to 5227 states and 24689 transitions. [2021-05-22 01:58:18,631 INFO L78 Accepts]: Start accepts. Automaton has 5227 states and 24689 transitions. Word has length 29 [2021-05-22 01:58:18,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:18,631 INFO L482 AbstractCegarLoop]: Abstraction has 5227 states and 24689 transitions. [2021-05-22 01:58:18,631 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:18,631 INFO L276 IsEmpty]: Start isEmpty. Operand 5227 states and 24689 transitions. [2021-05-22 01:58:18,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:18,640 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:18,640 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:18,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-05-22 01:58:18,640 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:18,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:18,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1449695609, now seen corresponding path program 120 times [2021-05-22 01:58:18,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:18,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475811759] [2021-05-22 01:58:18,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:18,763 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:18,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475811759] [2021-05-22 01:58:18,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475811759] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:18,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:18,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:18,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346835783] [2021-05-22 01:58:18,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:18,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:18,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:18,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:18,764 INFO L87 Difference]: Start difference. First operand 5227 states and 24689 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:18,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:18,883 INFO L93 Difference]: Finished difference Result 11440 states and 50932 transitions. [2021-05-22 01:58:18,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:18,884 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:18,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:18,912 INFO L225 Difference]: With dead ends: 11440 [2021-05-22 01:58:18,912 INFO L226 Difference]: Without dead ends: 10841 [2021-05-22 01:58:18,912 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:19,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10841 states. [2021-05-22 01:58:19,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10841 to 5103. [2021-05-22 01:58:19,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5103 states, 5102 states have (on average 4.7614660917287335) internal successors, (24293), 5102 states have internal predecessors, (24293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:19,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5103 states to 5103 states and 24293 transitions. [2021-05-22 01:58:19,140 INFO L78 Accepts]: Start accepts. Automaton has 5103 states and 24293 transitions. Word has length 29 [2021-05-22 01:58:19,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:19,140 INFO L482 AbstractCegarLoop]: Abstraction has 5103 states and 24293 transitions. [2021-05-22 01:58:19,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:19,140 INFO L276 IsEmpty]: Start isEmpty. Operand 5103 states and 24293 transitions. [2021-05-22 01:58:19,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:19,151 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:19,151 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:19,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-05-22 01:58:19,151 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:19,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:19,152 INFO L82 PathProgramCache]: Analyzing trace with hash 483927435, now seen corresponding path program 121 times [2021-05-22 01:58:19,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:19,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788266763] [2021-05-22 01:58:19,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:19,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:19,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:19,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788266763] [2021-05-22 01:58:19,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788266763] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:19,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:19,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:19,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527222311] [2021-05-22 01:58:19,282 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:19,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:19,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:19,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:19,283 INFO L87 Difference]: Start difference. First operand 5103 states and 24293 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:19,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:19,396 INFO L93 Difference]: Finished difference Result 11930 states and 53371 transitions. [2021-05-22 01:58:19,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:19,396 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:19,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:19,424 INFO L225 Difference]: With dead ends: 11930 [2021-05-22 01:58:19,425 INFO L226 Difference]: Without dead ends: 11515 [2021-05-22 01:58:19,425 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:19,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11515 states. [2021-05-22 01:58:19,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11515 to 5297. [2021-05-22 01:58:19,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 5296 states have (on average 4.751888217522659) internal successors, (25166), 5296 states have internal predecessors, (25166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:19,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 25166 transitions. [2021-05-22 01:58:19,661 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 25166 transitions. Word has length 29 [2021-05-22 01:58:19,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:19,661 INFO L482 AbstractCegarLoop]: Abstraction has 5297 states and 25166 transitions. [2021-05-22 01:58:19,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:19,661 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 25166 transitions. [2021-05-22 01:58:19,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:19,670 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:19,670 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:19,670 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-05-22 01:58:19,670 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:19,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:19,670 INFO L82 PathProgramCache]: Analyzing trace with hash -2056219253, now seen corresponding path program 122 times [2021-05-22 01:58:19,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:19,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968751962] [2021-05-22 01:58:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:19,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:19,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:19,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968751962] [2021-05-22 01:58:19,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968751962] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:19,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:19,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:19,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538405909] [2021-05-22 01:58:19,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:19,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:19,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:19,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:19,790 INFO L87 Difference]: Start difference. First operand 5297 states and 25166 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:19,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:19,882 INFO L93 Difference]: Finished difference Result 12057 states and 53850 transitions. [2021-05-22 01:58:19,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:19,883 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:19,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:19,911 INFO L225 Difference]: With dead ends: 12057 [2021-05-22 01:58:19,911 INFO L226 Difference]: Without dead ends: 11435 [2021-05-22 01:58:19,911 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:20,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11435 states. [2021-05-22 01:58:20,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11435 to 5217. [2021-05-22 01:58:20,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 4.755751533742331) internal successors, (24806), 5216 states have internal predecessors, (24806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:20,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 24806 transitions. [2021-05-22 01:58:20,144 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 24806 transitions. Word has length 29 [2021-05-22 01:58:20,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:20,144 INFO L482 AbstractCegarLoop]: Abstraction has 5217 states and 24806 transitions. [2021-05-22 01:58:20,144 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:20,145 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 24806 transitions. [2021-05-22 01:58:20,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:20,154 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:20,154 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:20,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-05-22 01:58:20,154 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:20,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:20,154 INFO L82 PathProgramCache]: Analyzing trace with hash 264125579, now seen corresponding path program 123 times [2021-05-22 01:58:20,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:20,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122747179] [2021-05-22 01:58:20,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:20,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:20,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122747179] [2021-05-22 01:58:20,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122747179] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:20,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:20,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:20,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791068881] [2021-05-22 01:58:20,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:20,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:20,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:20,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:20,276 INFO L87 Difference]: Start difference. First operand 5217 states and 24806 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:20,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:20,399 INFO L93 Difference]: Finished difference Result 11833 states and 52929 transitions. [2021-05-22 01:58:20,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:20,399 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:20,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:20,429 INFO L225 Difference]: With dead ends: 11833 [2021-05-22 01:58:20,429 INFO L226 Difference]: Without dead ends: 11418 [2021-05-22 01:58:20,429 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:20,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11418 states. [2021-05-22 01:58:20,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11418 to 5265. [2021-05-22 01:58:20,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 5264 states have (on average 4.74582066869301) internal successors, (24982), 5264 states have internal predecessors, (24982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:20,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 24982 transitions. [2021-05-22 01:58:20,665 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 24982 transitions. Word has length 29 [2021-05-22 01:58:20,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:20,665 INFO L482 AbstractCegarLoop]: Abstraction has 5265 states and 24982 transitions. [2021-05-22 01:58:20,665 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:20,665 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 24982 transitions. [2021-05-22 01:58:20,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:20,674 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:20,674 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:20,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-05-22 01:58:20,674 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:20,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:20,675 INFO L82 PathProgramCache]: Analyzing trace with hash 980788525, now seen corresponding path program 124 times [2021-05-22 01:58:20,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:20,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447823928] [2021-05-22 01:58:20,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:20,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:20,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:20,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447823928] [2021-05-22 01:58:20,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447823928] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:20,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:20,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:20,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370539771] [2021-05-22 01:58:20,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:20,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:20,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:20,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:20,797 INFO L87 Difference]: Start difference. First operand 5265 states and 24982 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:20,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:20,909 INFO L93 Difference]: Finished difference Result 11895 states and 53150 transitions. [2021-05-22 01:58:20,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:20,909 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:20,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:20,938 INFO L225 Difference]: With dead ends: 11895 [2021-05-22 01:58:20,938 INFO L226 Difference]: Without dead ends: 11370 [2021-05-22 01:58:20,938 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:21,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11370 states. [2021-05-22 01:58:21,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11370 to 5217. [2021-05-22 01:58:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 4.751150306748467) internal successors, (24782), 5216 states have internal predecessors, (24782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 24782 transitions. [2021-05-22 01:58:21,173 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 24782 transitions. Word has length 29 [2021-05-22 01:58:21,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:21,173 INFO L482 AbstractCegarLoop]: Abstraction has 5217 states and 24782 transitions. [2021-05-22 01:58:21,173 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:21,173 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 24782 transitions. [2021-05-22 01:58:21,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:21,182 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:21,182 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:21,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-05-22 01:58:21,182 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:21,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:21,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1230953171, now seen corresponding path program 125 times [2021-05-22 01:58:21,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:21,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853047074] [2021-05-22 01:58:21,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:21,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:21,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:21,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853047074] [2021-05-22 01:58:21,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853047074] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:21,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:21,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:21,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367129438] [2021-05-22 01:58:21,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:21,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:21,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:21,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:21,293 INFO L87 Difference]: Start difference. First operand 5217 states and 24782 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:21,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:21,389 INFO L93 Difference]: Finished difference Result 12182 states and 54365 transitions. [2021-05-22 01:58:21,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:21,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:21,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:21,418 INFO L225 Difference]: With dead ends: 12182 [2021-05-22 01:58:21,418 INFO L226 Difference]: Without dead ends: 11640 [2021-05-22 01:58:21,418 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:21,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11640 states. [2021-05-22 01:58:21,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11640 to 5360. [2021-05-22 01:58:21,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5360 states, 5359 states have (on average 4.721216644896436) internal successors, (25301), 5359 states have internal predecessors, (25301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:21,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5360 states to 5360 states and 25301 transitions. [2021-05-22 01:58:21,656 INFO L78 Accepts]: Start accepts. Automaton has 5360 states and 25301 transitions. Word has length 29 [2021-05-22 01:58:21,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:21,656 INFO L482 AbstractCegarLoop]: Abstraction has 5360 states and 25301 transitions. [2021-05-22 01:58:21,656 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:21,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5360 states and 25301 transitions. [2021-05-22 01:58:21,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:21,665 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:21,665 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:21,665 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-05-22 01:58:21,665 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:21,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:21,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1020677131, now seen corresponding path program 126 times [2021-05-22 01:58:21,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:21,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982447970] [2021-05-22 01:58:21,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:21,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:21,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982447970] [2021-05-22 01:58:21,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982447970] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:21,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:21,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:21,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642360508] [2021-05-22 01:58:21,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:21,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:21,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:21,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:21,776 INFO L87 Difference]: Start difference. First operand 5360 states and 25301 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:21,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:21,898 INFO L93 Difference]: Finished difference Result 12117 states and 53996 transitions. [2021-05-22 01:58:21,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:21,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:21,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:21,926 INFO L225 Difference]: With dead ends: 12117 [2021-05-22 01:58:21,926 INFO L226 Difference]: Without dead ends: 11441 [2021-05-22 01:58:21,927 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:22,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11441 states. [2021-05-22 01:58:22,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11441 to 5161. [2021-05-22 01:58:22,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.757751937984496) internal successors, (24550), 5160 states have internal predecessors, (24550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:22,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24550 transitions. [2021-05-22 01:58:22,164 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24550 transitions. Word has length 29 [2021-05-22 01:58:22,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:22,164 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24550 transitions. [2021-05-22 01:58:22,164 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:22,164 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24550 transitions. [2021-05-22 01:58:22,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:22,173 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:22,173 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:22,173 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-05-22 01:58:22,173 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:22,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:22,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1606166005, now seen corresponding path program 127 times [2021-05-22 01:58:22,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:22,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810369662] [2021-05-22 01:58:22,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:22,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:22,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:22,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810369662] [2021-05-22 01:58:22,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810369662] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:22,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:22,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:22,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770151881] [2021-05-22 01:58:22,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:22,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:22,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:22,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:22,295 INFO L87 Difference]: Start difference. First operand 5161 states and 24550 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:22,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:22,403 INFO L93 Difference]: Finished difference Result 11879 states and 53159 transitions. [2021-05-22 01:58:22,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:22,403 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:22,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:22,431 INFO L225 Difference]: With dead ends: 11879 [2021-05-22 01:58:22,431 INFO L226 Difference]: Without dead ends: 11464 [2021-05-22 01:58:22,431 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:22,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11464 states. [2021-05-22 01:58:22,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11464 to 5281. [2021-05-22 01:58:22,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 5280 states have (on average 4.7488636363636365) internal successors, (25074), 5280 states have internal predecessors, (25074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 25074 transitions. [2021-05-22 01:58:22,664 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 25074 transitions. Word has length 29 [2021-05-22 01:58:22,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:22,664 INFO L482 AbstractCegarLoop]: Abstraction has 5281 states and 25074 transitions. [2021-05-22 01:58:22,664 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:22,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 25074 transitions. [2021-05-22 01:58:22,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:22,673 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:22,673 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:22,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-05-22 01:58:22,673 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:22,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:22,673 INFO L82 PathProgramCache]: Analyzing trace with hash 148654603, now seen corresponding path program 128 times [2021-05-22 01:58:22,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:22,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691487723] [2021-05-22 01:58:22,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:22,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:22,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:22,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691487723] [2021-05-22 01:58:22,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691487723] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:22,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:22,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:22,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653993563] [2021-05-22 01:58:22,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:22,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:22,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:22,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:22,797 INFO L87 Difference]: Start difference. First operand 5281 states and 25074 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:22,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:22,890 INFO L93 Difference]: Finished difference Result 12006 states and 53638 transitions. [2021-05-22 01:58:22,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:22,890 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:22,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:22,918 INFO L225 Difference]: With dead ends: 12006 [2021-05-22 01:58:22,919 INFO L226 Difference]: Without dead ends: 11384 [2021-05-22 01:58:22,919 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:23,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11384 states. [2021-05-22 01:58:23,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11384 to 5201. [2021-05-22 01:58:23,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 4.752692307692308) internal successors, (24714), 5200 states have internal predecessors, (24714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:23,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 24714 transitions. [2021-05-22 01:58:23,202 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 24714 transitions. Word has length 29 [2021-05-22 01:58:23,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:23,203 INFO L482 AbstractCegarLoop]: Abstraction has 5201 states and 24714 transitions. [2021-05-22 01:58:23,203 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:23,203 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 24714 transitions. [2021-05-22 01:58:23,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:23,211 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:23,211 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:23,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-05-22 01:58:23,211 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:23,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:23,212 INFO L82 PathProgramCache]: Analyzing trace with hash 801297833, now seen corresponding path program 129 times [2021-05-22 01:58:23,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:23,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121758622] [2021-05-22 01:58:23,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:23,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:23,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:23,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121758622] [2021-05-22 01:58:23,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121758622] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:23,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:23,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:23,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323281698] [2021-05-22 01:58:23,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:23,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:23,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:23,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:23,347 INFO L87 Difference]: Start difference. First operand 5201 states and 24714 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:23,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:23,462 INFO L93 Difference]: Finished difference Result 11780 states and 52712 transitions. [2021-05-22 01:58:23,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:23,462 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:23,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:23,490 INFO L225 Difference]: With dead ends: 11780 [2021-05-22 01:58:23,490 INFO L226 Difference]: Without dead ends: 11365 [2021-05-22 01:58:23,490 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:23,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11365 states. [2021-05-22 01:58:23,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11365 to 5249. [2021-05-22 01:58:23,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5249 states, 5248 states have (on average 4.742759146341464) internal successors, (24890), 5248 states have internal predecessors, (24890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:23,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 24890 transitions. [2021-05-22 01:58:23,722 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 24890 transitions. Word has length 29 [2021-05-22 01:58:23,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:23,722 INFO L482 AbstractCegarLoop]: Abstraction has 5249 states and 24890 transitions. [2021-05-22 01:58:23,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:23,723 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 24890 transitions. [2021-05-22 01:58:23,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:23,731 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:23,731 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:23,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-05-22 01:58:23,731 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:23,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:23,732 INFO L82 PathProgramCache]: Analyzing trace with hash 286616907, now seen corresponding path program 130 times [2021-05-22 01:58:23,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:23,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613771822] [2021-05-22 01:58:23,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:23,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:23,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:23,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613771822] [2021-05-22 01:58:23,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613771822] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:23,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:23,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:23,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228888989] [2021-05-22 01:58:23,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:23,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:23,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:23,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:23,856 INFO L87 Difference]: Start difference. First operand 5249 states and 24890 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:23,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:23,966 INFO L93 Difference]: Finished difference Result 11840 states and 52928 transitions. [2021-05-22 01:58:23,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:23,967 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:23,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:23,997 INFO L225 Difference]: With dead ends: 11840 [2021-05-22 01:58:23,997 INFO L226 Difference]: Without dead ends: 11317 [2021-05-22 01:58:23,997 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:24,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11317 states. [2021-05-22 01:58:24,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11317 to 5201. [2021-05-22 01:58:24,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 4.748076923076923) internal successors, (24690), 5200 states have internal predecessors, (24690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:24,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 24690 transitions. [2021-05-22 01:58:24,230 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 24690 transitions. Word has length 29 [2021-05-22 01:58:24,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:24,230 INFO L482 AbstractCegarLoop]: Abstraction has 5201 states and 24690 transitions. [2021-05-22 01:58:24,231 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:24,231 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 24690 transitions. [2021-05-22 01:58:24,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:24,239 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:24,239 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:24,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-05-22 01:58:24,239 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:24,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:24,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1025445195, now seen corresponding path program 131 times [2021-05-22 01:58:24,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:24,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441286484] [2021-05-22 01:58:24,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:24,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:24,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441286484] [2021-05-22 01:58:24,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441286484] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:24,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:24,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:24,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745991319] [2021-05-22 01:58:24,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:24,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:24,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:24,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:24,350 INFO L87 Difference]: Start difference. First operand 5201 states and 24690 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:24,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:24,451 INFO L93 Difference]: Finished difference Result 12096 states and 54033 transitions. [2021-05-22 01:58:24,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:24,451 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:24,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:24,480 INFO L225 Difference]: With dead ends: 12096 [2021-05-22 01:58:24,480 INFO L226 Difference]: Without dead ends: 11554 [2021-05-22 01:58:24,480 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:24,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11554 states. [2021-05-22 01:58:24,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11554 to 5311. [2021-05-22 01:58:24,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5311 states, 5310 states have (on average 4.7259887005649714) internal successors, (25095), 5310 states have internal predecessors, (25095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:24,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5311 states to 5311 states and 25095 transitions. [2021-05-22 01:58:24,719 INFO L78 Accepts]: Start accepts. Automaton has 5311 states and 25095 transitions. Word has length 29 [2021-05-22 01:58:24,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:24,719 INFO L482 AbstractCegarLoop]: Abstraction has 5311 states and 25095 transitions. [2021-05-22 01:58:24,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:24,720 INFO L276 IsEmpty]: Start isEmpty. Operand 5311 states and 25095 transitions. [2021-05-22 01:58:24,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:24,728 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:24,728 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:24,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-05-22 01:58:24,728 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:24,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:24,729 INFO L82 PathProgramCache]: Analyzing trace with hash 284493097, now seen corresponding path program 132 times [2021-05-22 01:58:24,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:24,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505319176] [2021-05-22 01:58:24,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:24,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:24,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:24,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505319176] [2021-05-22 01:58:24,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505319176] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:24,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:24,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:24,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748672343] [2021-05-22 01:58:24,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:24,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:24,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:24,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:24,843 INFO L87 Difference]: Start difference. First operand 5311 states and 25095 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:24,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:24,956 INFO L93 Difference]: Finished difference Result 12029 states and 53660 transitions. [2021-05-22 01:58:24,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:24,956 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:24,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:24,985 INFO L225 Difference]: With dead ends: 12029 [2021-05-22 01:58:24,985 INFO L226 Difference]: Without dead ends: 11404 [2021-05-22 01:58:24,985 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:25,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11404 states. [2021-05-22 01:58:25,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11404 to 5161. [2021-05-22 01:58:25,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.753875968992248) internal successors, (24530), 5160 states have internal predecessors, (24530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:25,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24530 transitions. [2021-05-22 01:58:25,230 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24530 transitions. Word has length 29 [2021-05-22 01:58:25,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:25,231 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24530 transitions. [2021-05-22 01:58:25,231 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:25,231 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24530 transitions. [2021-05-22 01:58:25,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:25,239 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:25,239 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:25,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-05-22 01:58:25,239 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:25,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:25,240 INFO L82 PathProgramCache]: Analyzing trace with hash -345174871, now seen corresponding path program 133 times [2021-05-22 01:58:25,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:25,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662027756] [2021-05-22 01:58:25,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:25,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:25,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:25,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662027756] [2021-05-22 01:58:25,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662027756] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:25,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:25,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:25,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935341830] [2021-05-22 01:58:25,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:25,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:25,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:25,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:25,358 INFO L87 Difference]: Start difference. First operand 5161 states and 24530 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:25,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:25,470 INFO L93 Difference]: Finished difference Result 11637 states and 52111 transitions. [2021-05-22 01:58:25,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:25,470 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:25,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:25,499 INFO L225 Difference]: With dead ends: 11637 [2021-05-22 01:58:25,499 INFO L226 Difference]: Without dead ends: 11222 [2021-05-22 01:58:25,499 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:25,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11222 states. [2021-05-22 01:58:25,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11222 to 5233. [2021-05-22 01:58:25,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 4.745795107033639) internal successors, (24830), 5232 states have internal predecessors, (24830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:25,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 24830 transitions. [2021-05-22 01:58:25,731 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 24830 transitions. Word has length 29 [2021-05-22 01:58:25,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:25,731 INFO L482 AbstractCegarLoop]: Abstraction has 5233 states and 24830 transitions. [2021-05-22 01:58:25,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:25,731 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 24830 transitions. [2021-05-22 01:58:25,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:25,740 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:25,740 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:25,740 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-05-22 01:58:25,740 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:25,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:25,740 INFO L82 PathProgramCache]: Analyzing trace with hash 371488075, now seen corresponding path program 134 times [2021-05-22 01:58:25,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:25,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240301365] [2021-05-22 01:58:25,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:25,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:25,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240301365] [2021-05-22 01:58:25,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240301365] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:25,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:25,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:25,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537822031] [2021-05-22 01:58:25,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:25,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:25,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:25,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:25,858 INFO L87 Difference]: Start difference. First operand 5233 states and 24830 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:25,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:25,963 INFO L93 Difference]: Finished difference Result 11699 states and 52332 transitions. [2021-05-22 01:58:25,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:25,963 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:25,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:25,991 INFO L225 Difference]: With dead ends: 11699 [2021-05-22 01:58:25,991 INFO L226 Difference]: Without dead ends: 11174 [2021-05-22 01:58:25,991 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:26,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11174 states. [2021-05-22 01:58:26,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11174 to 5185. [2021-05-22 01:58:26,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.751157407407407) internal successors, (24630), 5184 states have internal predecessors, (24630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:26,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24630 transitions. [2021-05-22 01:58:26,224 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24630 transitions. Word has length 29 [2021-05-22 01:58:26,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:26,224 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24630 transitions. [2021-05-22 01:58:26,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:26,224 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24630 transitions. [2021-05-22 01:58:26,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:26,233 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:26,233 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:26,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-05-22 01:58:26,233 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:26,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:26,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1519134581, now seen corresponding path program 135 times [2021-05-22 01:58:26,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:26,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037682613] [2021-05-22 01:58:26,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:26,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:26,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:26,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037682613] [2021-05-22 01:58:26,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037682613] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:26,354 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:26,354 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:26,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287030753] [2021-05-22 01:58:26,355 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:26,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:26,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:26,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:26,355 INFO L87 Difference]: Start difference. First operand 5185 states and 24630 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:26,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:26,465 INFO L93 Difference]: Finished difference Result 11635 states and 52082 transitions. [2021-05-22 01:58:26,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:26,465 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:26,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:26,493 INFO L225 Difference]: With dead ends: 11635 [2021-05-22 01:58:26,493 INFO L226 Difference]: Without dead ends: 11220 [2021-05-22 01:58:26,493 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:26,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11220 states. [2021-05-22 01:58:26,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11220 to 5233. [2021-05-22 01:58:26,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 4.741207951070336) internal successors, (24806), 5232 states have internal predecessors, (24806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:26,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 24806 transitions. [2021-05-22 01:58:26,726 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 24806 transitions. Word has length 29 [2021-05-22 01:58:26,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:26,726 INFO L482 AbstractCegarLoop]: Abstraction has 5233 states and 24806 transitions. [2021-05-22 01:58:26,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:26,726 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 24806 transitions. [2021-05-22 01:58:26,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:26,734 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:26,734 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:26,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-05-22 01:58:26,735 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:26,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:26,735 INFO L82 PathProgramCache]: Analyzing trace with hash -489569205, now seen corresponding path program 136 times [2021-05-22 01:58:26,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:26,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425330848] [2021-05-22 01:58:26,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:26,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:26,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:26,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425330848] [2021-05-22 01:58:26,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425330848] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:26,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:26,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:26,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058021992] [2021-05-22 01:58:26,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:26,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:26,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:26,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:26,872 INFO L87 Difference]: Start difference. First operand 5233 states and 24806 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:26,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:26,982 INFO L93 Difference]: Finished difference Result 11695 states and 52298 transitions. [2021-05-22 01:58:26,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:26,982 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:26,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:27,010 INFO L225 Difference]: With dead ends: 11695 [2021-05-22 01:58:27,010 INFO L226 Difference]: Without dead ends: 11172 [2021-05-22 01:58:27,010 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 155.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:27,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11172 states. [2021-05-22 01:58:27,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11172 to 5185. [2021-05-22 01:58:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.746527777777778) internal successors, (24606), 5184 states have internal predecessors, (24606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:27,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24606 transitions. [2021-05-22 01:58:27,241 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24606 transitions. Word has length 29 [2021-05-22 01:58:27,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:27,241 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24606 transitions. [2021-05-22 01:58:27,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:27,241 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24606 transitions. [2021-05-22 01:58:27,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:27,250 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:27,250 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:27,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-05-22 01:58:27,250 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:27,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:27,250 INFO L82 PathProgramCache]: Analyzing trace with hash -315642771, now seen corresponding path program 137 times [2021-05-22 01:58:27,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:27,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457467076] [2021-05-22 01:58:27,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:27,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:27,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:27,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457467076] [2021-05-22 01:58:27,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457467076] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:27,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:27,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:27,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827873453] [2021-05-22 01:58:27,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:27,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:27,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:27,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:27,364 INFO L87 Difference]: Start difference. First operand 5185 states and 24606 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:27,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:27,486 INFO L93 Difference]: Finished difference Result 11789 states and 52743 transitions. [2021-05-22 01:58:27,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:27,486 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:27,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:27,515 INFO L225 Difference]: With dead ends: 11789 [2021-05-22 01:58:27,515 INFO L226 Difference]: Without dead ends: 11312 [2021-05-22 01:58:27,515 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:27,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11312 states. [2021-05-22 01:58:27,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11312 to 5263. [2021-05-22 01:58:27,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5262 states have (on average 4.7318510072215885) internal successors, (24899), 5262 states have internal predecessors, (24899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:27,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 24899 transitions. [2021-05-22 01:58:27,749 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 24899 transitions. Word has length 29 [2021-05-22 01:58:27,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:27,750 INFO L482 AbstractCegarLoop]: Abstraction has 5263 states and 24899 transitions. [2021-05-22 01:58:27,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:27,750 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 24899 transitions. [2021-05-22 01:58:27,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:27,758 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:27,758 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:27,758 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-05-22 01:58:27,758 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:27,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:27,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1707787317, now seen corresponding path program 138 times [2021-05-22 01:58:27,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:27,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441778784] [2021-05-22 01:58:27,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:27,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:27,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441778784] [2021-05-22 01:58:27,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441778784] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:27,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:27,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:27,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920837633] [2021-05-22 01:58:27,872 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:27,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:27,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:27,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:27,872 INFO L87 Difference]: Start difference. First operand 5263 states and 24899 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:27,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:27,982 INFO L93 Difference]: Finished difference Result 11787 states and 52660 transitions. [2021-05-22 01:58:27,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:27,982 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:27,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:28,010 INFO L225 Difference]: With dead ends: 11787 [2021-05-22 01:58:28,011 INFO L226 Difference]: Without dead ends: 11210 [2021-05-22 01:58:28,011 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:28,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11210 states. [2021-05-22 01:58:28,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11210 to 5161. [2021-05-22 01:58:28,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.751550387596899) internal successors, (24518), 5160 states have internal predecessors, (24518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24518 transitions. [2021-05-22 01:58:28,242 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24518 transitions. Word has length 29 [2021-05-22 01:58:28,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:28,242 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24518 transitions. [2021-05-22 01:58:28,242 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:28,242 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24518 transitions. [2021-05-22 01:58:28,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:28,251 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:28,251 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:28,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-05-22 01:58:28,251 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:28,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:28,251 INFO L82 PathProgramCache]: Analyzing trace with hash 356539501, now seen corresponding path program 139 times [2021-05-22 01:58:28,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:28,251 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777927330] [2021-05-22 01:58:28,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:28,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:28,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:28,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777927330] [2021-05-22 01:58:28,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777927330] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:28,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:28,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:28,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610749000] [2021-05-22 01:58:28,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:28,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:28,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:28,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:28,358 INFO L87 Difference]: Start difference. First operand 5161 states and 24518 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:28,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:28,453 INFO L93 Difference]: Finished difference Result 12333 states and 55056 transitions. [2021-05-22 01:58:28,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:28,453 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:28,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:28,482 INFO L225 Difference]: With dead ends: 12333 [2021-05-22 01:58:28,483 INFO L226 Difference]: Without dead ends: 11791 [2021-05-22 01:58:28,483 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:28,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11791 states. [2021-05-22 01:58:28,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11791 to 5391. [2021-05-22 01:58:28,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5391 states, 5390 states have (on average 4.71873840445269) internal successors, (25434), 5390 states have internal predecessors, (25434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:28,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5391 states to 5391 states and 25434 transitions. [2021-05-22 01:58:28,721 INFO L78 Accepts]: Start accepts. Automaton has 5391 states and 25434 transitions. Word has length 29 [2021-05-22 01:58:28,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:28,721 INFO L482 AbstractCegarLoop]: Abstraction has 5391 states and 25434 transitions. [2021-05-22 01:58:28,721 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:28,721 INFO L276 IsEmpty]: Start isEmpty. Operand 5391 states and 25434 transitions. [2021-05-22 01:58:28,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:28,730 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:28,730 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:28,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-05-22 01:58:28,730 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:28,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:28,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1686797493, now seen corresponding path program 140 times [2021-05-22 01:58:28,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:28,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819352633] [2021-05-22 01:58:28,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:28,834 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:28,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819352633] [2021-05-22 01:58:28,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819352633] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:28,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:28,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:28,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357348703] [2021-05-22 01:58:28,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:28,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:28,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:28,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:28,835 INFO L87 Difference]: Start difference. First operand 5391 states and 25434 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:28,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:28,953 INFO L93 Difference]: Finished difference Result 12268 states and 54687 transitions. [2021-05-22 01:58:28,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:28,953 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:28,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:28,982 INFO L225 Difference]: With dead ends: 12268 [2021-05-22 01:58:28,982 INFO L226 Difference]: Without dead ends: 11648 [2021-05-22 01:58:28,982 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:29,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11648 states. [2021-05-22 01:58:29,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11648 to 5248. [2021-05-22 01:58:29,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5248 states, 5247 states have (on average 4.734896131122547) internal successors, (24844), 5247 states have internal predecessors, (24844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:29,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5248 states to 5248 states and 24844 transitions. [2021-05-22 01:58:29,220 INFO L78 Accepts]: Start accepts. Automaton has 5248 states and 24844 transitions. Word has length 29 [2021-05-22 01:58:29,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:29,220 INFO L482 AbstractCegarLoop]: Abstraction has 5248 states and 24844 transitions. [2021-05-22 01:58:29,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:29,220 INFO L276 IsEmpty]: Start isEmpty. Operand 5248 states and 24844 transitions. [2021-05-22 01:58:29,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:29,229 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:29,229 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:29,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-05-22 01:58:29,229 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:29,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:29,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1759540149, now seen corresponding path program 141 times [2021-05-22 01:58:29,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:29,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770221235] [2021-05-22 01:58:29,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:29,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:29,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:29,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770221235] [2021-05-22 01:58:29,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770221235] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:29,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:29,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:29,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794122619] [2021-05-22 01:58:29,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:29,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:29,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:29,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:29,334 INFO L87 Difference]: Start difference. First operand 5248 states and 24844 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:29,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:29,428 INFO L93 Difference]: Finished difference Result 12298 states and 54865 transitions. [2021-05-22 01:58:29,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:29,429 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:29,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:29,457 INFO L225 Difference]: With dead ends: 12298 [2021-05-22 01:58:29,458 INFO L226 Difference]: Without dead ends: 11756 [2021-05-22 01:58:29,458 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 107.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:29,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11756 states. [2021-05-22 01:58:29,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11756 to 5358. [2021-05-22 01:58:29,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5358 states, 5357 states have (on average 4.7132723539294386) internal successors, (25249), 5357 states have internal predecessors, (25249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:29,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5358 states to 5358 states and 25249 transitions. [2021-05-22 01:58:29,693 INFO L78 Accepts]: Start accepts. Automaton has 5358 states and 25249 transitions. Word has length 29 [2021-05-22 01:58:29,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:29,693 INFO L482 AbstractCegarLoop]: Abstraction has 5358 states and 25249 transitions. [2021-05-22 01:58:29,693 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:29,693 INFO L276 IsEmpty]: Start isEmpty. Operand 5358 states and 25249 transitions. [2021-05-22 01:58:29,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:29,702 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:29,702 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:29,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-05-22 01:58:29,702 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:29,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:29,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1203751861, now seen corresponding path program 142 times [2021-05-22 01:58:29,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:29,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690672184] [2021-05-22 01:58:29,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:29,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:29,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690672184] [2021-05-22 01:58:29,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690672184] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:29,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:29,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:29,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572970437] [2021-05-22 01:58:29,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:29,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:29,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:29,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:29,818 INFO L87 Difference]: Start difference. First operand 5358 states and 25249 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:29,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:29,926 INFO L93 Difference]: Finished difference Result 12231 states and 54492 transitions. [2021-05-22 01:58:29,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:29,926 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:29,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:29,955 INFO L225 Difference]: With dead ends: 12231 [2021-05-22 01:58:29,955 INFO L226 Difference]: Without dead ends: 11646 [2021-05-22 01:58:29,955 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11646 states. [2021-05-22 01:58:30,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11646 to 5248. [2021-05-22 01:58:30,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5248 states, 5247 states have (on average 4.724413950829045) internal successors, (24789), 5247 states have internal predecessors, (24789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:30,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5248 states to 5248 states and 24789 transitions. [2021-05-22 01:58:30,189 INFO L78 Accepts]: Start accepts. Automaton has 5248 states and 24789 transitions. Word has length 29 [2021-05-22 01:58:30,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:30,189 INFO L482 AbstractCegarLoop]: Abstraction has 5248 states and 24789 transitions. [2021-05-22 01:58:30,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:30,189 INFO L276 IsEmpty]: Start isEmpty. Operand 5248 states and 24789 transitions. [2021-05-22 01:58:30,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:30,197 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:30,197 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:30,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-05-22 01:58:30,197 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:30,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:30,197 INFO L82 PathProgramCache]: Analyzing trace with hash -777192535, now seen corresponding path program 143 times [2021-05-22 01:58:30,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:30,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106355350] [2021-05-22 01:58:30,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:30,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:30,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:30,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106355350] [2021-05-22 01:58:30,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106355350] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:30,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:30,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:30,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892160055] [2021-05-22 01:58:30,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:30,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:30,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:30,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:30,307 INFO L87 Difference]: Start difference. First operand 5248 states and 24789 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:30,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:30,414 INFO L93 Difference]: Finished difference Result 12136 states and 54150 transitions. [2021-05-22 01:58:30,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:30,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:30,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:30,443 INFO L225 Difference]: With dead ends: 12136 [2021-05-22 01:58:30,443 INFO L226 Difference]: Without dead ends: 11659 [2021-05-22 01:58:30,443 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:30,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11659 states. [2021-05-22 01:58:30,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11659 to 5326. [2021-05-22 01:58:30,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5326 states, 5325 states have (on average 4.710234741784038) internal successors, (25082), 5325 states have internal predecessors, (25082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:30,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5326 states to 5326 states and 25082 transitions. [2021-05-22 01:58:30,676 INFO L78 Accepts]: Start accepts. Automaton has 5326 states and 25082 transitions. Word has length 29 [2021-05-22 01:58:30,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:30,676 INFO L482 AbstractCegarLoop]: Abstraction has 5326 states and 25082 transitions. [2021-05-22 01:58:30,676 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:30,676 INFO L276 IsEmpty]: Start isEmpty. Operand 5326 states and 25082 transitions. [2021-05-22 01:58:30,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:30,685 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:30,685 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:30,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-05-22 01:58:30,685 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:30,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:30,685 INFO L82 PathProgramCache]: Analyzing trace with hash -984000501, now seen corresponding path program 144 times [2021-05-22 01:58:30,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:30,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851672480] [2021-05-22 01:58:30,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:30,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:30,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:30,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851672480] [2021-05-22 01:58:30,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851672480] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:30,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:30,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:30,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172875259] [2021-05-22 01:58:30,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:30,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:30,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:30,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:30,792 INFO L87 Difference]: Start difference. First operand 5326 states and 25082 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:30,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:30,901 INFO L93 Difference]: Finished difference Result 12134 states and 54067 transitions. [2021-05-22 01:58:30,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:30,901 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:30,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:30,930 INFO L225 Difference]: With dead ends: 12134 [2021-05-22 01:58:30,930 INFO L226 Difference]: Without dead ends: 11458 [2021-05-22 01:58:30,930 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:31,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11458 states. [2021-05-22 01:58:31,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11458 to 5125. [2021-05-22 01:58:31,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5124 states have (on average 4.758782201405152) internal successors, (24384), 5124 states have internal predecessors, (24384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:31,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 24384 transitions. [2021-05-22 01:58:31,161 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 24384 transitions. Word has length 29 [2021-05-22 01:58:31,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:31,161 INFO L482 AbstractCegarLoop]: Abstraction has 5125 states and 24384 transitions. [2021-05-22 01:58:31,161 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:31,162 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 24384 transitions. [2021-05-22 01:58:31,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:31,170 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:31,170 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:31,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-05-22 01:58:31,170 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:31,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:31,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1593216681, now seen corresponding path program 145 times [2021-05-22 01:58:31,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:31,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176750929] [2021-05-22 01:58:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:31,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:31,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:31,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176750929] [2021-05-22 01:58:31,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176750929] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:31,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:31,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:31,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494281952] [2021-05-22 01:58:31,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:31,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:31,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:31,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:31,288 INFO L87 Difference]: Start difference. First operand 5125 states and 24384 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:31,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:31,394 INFO L93 Difference]: Finished difference Result 11897 states and 53247 transitions. [2021-05-22 01:58:31,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:31,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:31,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:31,423 INFO L225 Difference]: With dead ends: 11897 [2021-05-22 01:58:31,423 INFO L226 Difference]: Without dead ends: 11482 [2021-05-22 01:58:31,423 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:31,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11482 states. [2021-05-22 01:58:31,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11482 to 5289. [2021-05-22 01:58:31,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5289 states, 5288 states have (on average 4.750378214826021) internal successors, (25120), 5288 states have internal predecessors, (25120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:31,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5289 states to 5289 states and 25120 transitions. [2021-05-22 01:58:31,657 INFO L78 Accepts]: Start accepts. Automaton has 5289 states and 25120 transitions. Word has length 29 [2021-05-22 01:58:31,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:31,657 INFO L482 AbstractCegarLoop]: Abstraction has 5289 states and 25120 transitions. [2021-05-22 01:58:31,657 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:31,657 INFO L276 IsEmpty]: Start isEmpty. Operand 5289 states and 25120 transitions. [2021-05-22 01:58:31,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:31,665 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:31,666 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:31,666 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-05-22 01:58:31,666 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:31,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:31,666 INFO L82 PathProgramCache]: Analyzing trace with hash -946930007, now seen corresponding path program 146 times [2021-05-22 01:58:31,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:31,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733561791] [2021-05-22 01:58:31,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:31,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:31,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:31,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733561791] [2021-05-22 01:58:31,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733561791] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:31,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:31,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:31,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747788552] [2021-05-22 01:58:31,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:31,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:31,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:31,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:31,791 INFO L87 Difference]: Start difference. First operand 5289 states and 25120 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:31,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:31,897 INFO L93 Difference]: Finished difference Result 12024 states and 53726 transitions. [2021-05-22 01:58:31,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:31,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:31,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:31,927 INFO L225 Difference]: With dead ends: 12024 [2021-05-22 01:58:31,927 INFO L226 Difference]: Without dead ends: 11402 [2021-05-22 01:58:31,927 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:32,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11402 states. [2021-05-22 01:58:32,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11402 to 5209. [2021-05-22 01:58:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.754224270353302) internal successors, (24760), 5208 states have internal predecessors, (24760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:32,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24760 transitions. [2021-05-22 01:58:32,162 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24760 transitions. Word has length 29 [2021-05-22 01:58:32,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:32,162 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24760 transitions. [2021-05-22 01:58:32,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:32,162 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24760 transitions. [2021-05-22 01:58:32,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:32,170 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:32,170 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:32,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-05-22 01:58:32,171 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:32,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:32,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1373414825, now seen corresponding path program 147 times [2021-05-22 01:58:32,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:32,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032919655] [2021-05-22 01:58:32,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:32,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:32,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:32,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032919655] [2021-05-22 01:58:32,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032919655] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:32,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:32,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:32,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257746646] [2021-05-22 01:58:32,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:32,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:32,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:32,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:32,287 INFO L87 Difference]: Start difference. First operand 5209 states and 24760 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:32,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:32,409 INFO L93 Difference]: Finished difference Result 11800 states and 52805 transitions. [2021-05-22 01:58:32,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:32,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:32,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:32,437 INFO L225 Difference]: With dead ends: 11800 [2021-05-22 01:58:32,437 INFO L226 Difference]: Without dead ends: 11385 [2021-05-22 01:58:32,437 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:32,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11385 states. [2021-05-22 01:58:32,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11385 to 5257. [2021-05-22 01:58:32,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5256 states have (on average 4.744292237442922) internal successors, (24936), 5256 states have internal predecessors, (24936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:32,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 24936 transitions. [2021-05-22 01:58:32,669 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 24936 transitions. Word has length 29 [2021-05-22 01:58:32,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:32,669 INFO L482 AbstractCegarLoop]: Abstraction has 5257 states and 24936 transitions. [2021-05-22 01:58:32,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:32,669 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 24936 transitions. [2021-05-22 01:58:32,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:32,678 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:32,678 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:32,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-05-22 01:58:32,678 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:32,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:32,678 INFO L82 PathProgramCache]: Analyzing trace with hash 2090077771, now seen corresponding path program 148 times [2021-05-22 01:58:32,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:32,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527424038] [2021-05-22 01:58:32,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:32,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:32,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:32,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527424038] [2021-05-22 01:58:32,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527424038] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:32,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:32,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:32,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438164247] [2021-05-22 01:58:32,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:32,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:32,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:32,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:32,807 INFO L87 Difference]: Start difference. First operand 5257 states and 24936 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:32,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:32,918 INFO L93 Difference]: Finished difference Result 11862 states and 53026 transitions. [2021-05-22 01:58:32,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:32,919 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:32,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:32,947 INFO L225 Difference]: With dead ends: 11862 [2021-05-22 01:58:32,947 INFO L226 Difference]: Without dead ends: 11337 [2021-05-22 01:58:32,947 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:33,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11337 states. [2021-05-22 01:58:33,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11337 to 5209. [2021-05-22 01:58:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.749615975422427) internal successors, (24736), 5208 states have internal predecessors, (24736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:33,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24736 transitions. [2021-05-22 01:58:33,215 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24736 transitions. Word has length 29 [2021-05-22 01:58:33,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:33,215 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24736 transitions. [2021-05-22 01:58:33,215 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:33,215 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24736 transitions. [2021-05-22 01:58:33,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:33,224 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:33,224 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:33,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-05-22 01:58:33,224 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:33,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:33,225 INFO L82 PathProgramCache]: Analyzing trace with hash -121663925, now seen corresponding path program 149 times [2021-05-22 01:58:33,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:33,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828924853] [2021-05-22 01:58:33,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:33,329 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:33,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828924853] [2021-05-22 01:58:33,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828924853] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:33,329 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:33,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:33,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373798245] [2021-05-22 01:58:33,329 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:33,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:33,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:33,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:33,330 INFO L87 Difference]: Start difference. First operand 5209 states and 24736 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:33,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:33,449 INFO L93 Difference]: Finished difference Result 12149 states and 54241 transitions. [2021-05-22 01:58:33,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:33,450 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:33,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:33,486 INFO L225 Difference]: With dead ends: 12149 [2021-05-22 01:58:33,486 INFO L226 Difference]: Without dead ends: 11607 [2021-05-22 01:58:33,486 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:33,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11607 states. [2021-05-22 01:58:33,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11607 to 5352. [2021-05-22 01:58:33,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5352 states, 5351 states have (on average 4.719678564754251) internal successors, (25255), 5351 states have internal predecessors, (25255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:33,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5352 states to 5352 states and 25255 transitions. [2021-05-22 01:58:33,748 INFO L78 Accepts]: Start accepts. Automaton has 5352 states and 25255 transitions. Word has length 29 [2021-05-22 01:58:33,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:33,749 INFO L482 AbstractCegarLoop]: Abstraction has 5352 states and 25255 transitions. [2021-05-22 01:58:33,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:33,749 INFO L276 IsEmpty]: Start isEmpty. Operand 5352 states and 25255 transitions. [2021-05-22 01:58:33,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:33,757 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:33,757 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:33,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-05-22 01:58:33,757 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:33,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:33,758 INFO L82 PathProgramCache]: Analyzing trace with hash 2129966377, now seen corresponding path program 150 times [2021-05-22 01:58:33,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:33,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431819843] [2021-05-22 01:58:33,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:33,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:33,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431819843] [2021-05-22 01:58:33,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431819843] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:33,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:33,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:33,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709213571] [2021-05-22 01:58:33,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:33,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:33,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:33,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:33,864 INFO L87 Difference]: Start difference. First operand 5352 states and 25255 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:33,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:33,970 INFO L93 Difference]: Finished difference Result 12084 states and 53872 transitions. [2021-05-22 01:58:33,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:33,970 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:33,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:34,001 INFO L225 Difference]: With dead ends: 12084 [2021-05-22 01:58:34,001 INFO L226 Difference]: Without dead ends: 11408 [2021-05-22 01:58:34,002 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:34,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11408 states. [2021-05-22 01:58:34,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11408 to 5153. [2021-05-22 01:58:34,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.7562111801242235) internal successors, (24504), 5152 states have internal predecessors, (24504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:34,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24504 transitions. [2021-05-22 01:58:34,237 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24504 transitions. Word has length 29 [2021-05-22 01:58:34,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:34,237 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24504 transitions. [2021-05-22 01:58:34,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:34,238 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24504 transitions. [2021-05-22 01:58:34,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:34,246 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:34,246 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:34,246 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-05-22 01:58:34,246 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:34,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:34,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1726432693, now seen corresponding path program 151 times [2021-05-22 01:58:34,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:34,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436460153] [2021-05-22 01:58:34,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:34,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:34,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:34,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436460153] [2021-05-22 01:58:34,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436460153] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:34,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:34,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:34,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879621404] [2021-05-22 01:58:34,360 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:34,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:34,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:34,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:34,360 INFO L87 Difference]: Start difference. First operand 5153 states and 24504 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:34,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:34,466 INFO L93 Difference]: Finished difference Result 11840 states and 53016 transitions. [2021-05-22 01:58:34,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:34,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:34,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:34,495 INFO L225 Difference]: With dead ends: 11840 [2021-05-22 01:58:34,495 INFO L226 Difference]: Without dead ends: 11425 [2021-05-22 01:58:34,495 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:34,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11425 states. [2021-05-22 01:58:34,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11425 to 5273. [2021-05-22 01:58:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5273 states, 5272 states have (on average 4.7473444613050075) internal successors, (25028), 5272 states have internal predecessors, (25028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:34,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5273 states to 5273 states and 25028 transitions. [2021-05-22 01:58:34,729 INFO L78 Accepts]: Start accepts. Automaton has 5273 states and 25028 transitions. Word has length 29 [2021-05-22 01:58:34,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:34,729 INFO L482 AbstractCegarLoop]: Abstraction has 5273 states and 25028 transitions. [2021-05-22 01:58:34,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:34,729 INFO L276 IsEmpty]: Start isEmpty. Operand 5273 states and 25028 transitions. [2021-05-22 01:58:34,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:34,738 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:34,738 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:34,738 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-05-22 01:58:34,738 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:34,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:34,738 INFO L82 PathProgramCache]: Analyzing trace with hash 28387915, now seen corresponding path program 152 times [2021-05-22 01:58:34,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:34,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923290286] [2021-05-22 01:58:34,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:34,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:34,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:34,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923290286] [2021-05-22 01:58:34,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923290286] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:34,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:34,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:34,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808206257] [2021-05-22 01:58:34,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:34,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:34,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:34,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:34,852 INFO L87 Difference]: Start difference. First operand 5273 states and 25028 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:34,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:34,951 INFO L93 Difference]: Finished difference Result 11967 states and 53495 transitions. [2021-05-22 01:58:34,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:34,952 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:34,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:34,979 INFO L225 Difference]: With dead ends: 11967 [2021-05-22 01:58:34,980 INFO L226 Difference]: Without dead ends: 11345 [2021-05-22 01:58:34,980 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:35,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11345 states. [2021-05-22 01:58:35,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11345 to 5193. [2021-05-22 01:58:35,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5193 states, 5192 states have (on average 4.75115562403698) internal successors, (24668), 5192 states have internal predecessors, (24668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:35,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 24668 transitions. [2021-05-22 01:58:35,212 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 24668 transitions. Word has length 29 [2021-05-22 01:58:35,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:35,212 INFO L482 AbstractCegarLoop]: Abstraction has 5193 states and 24668 transitions. [2021-05-22 01:58:35,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:35,212 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 24668 transitions. [2021-05-22 01:58:35,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:35,221 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:35,221 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:35,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-05-22 01:58:35,221 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:35,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:35,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1291260311, now seen corresponding path program 153 times [2021-05-22 01:58:35,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:35,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660785892] [2021-05-22 01:58:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:35,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:35,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:35,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660785892] [2021-05-22 01:58:35,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660785892] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:35,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:35,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:35,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798966669] [2021-05-22 01:58:35,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:35,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:35,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:35,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:35,351 INFO L87 Difference]: Start difference. First operand 5193 states and 24668 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:35,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:35,466 INFO L93 Difference]: Finished difference Result 11737 states and 52557 transitions. [2021-05-22 01:58:35,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:35,467 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:35,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:35,495 INFO L225 Difference]: With dead ends: 11737 [2021-05-22 01:58:35,496 INFO L226 Difference]: Without dead ends: 11322 [2021-05-22 01:58:35,496 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:35,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11322 states. [2021-05-22 01:58:35,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11322 to 5241. [2021-05-22 01:58:35,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5241 states, 5240 states have (on average 4.741221374045802) internal successors, (24844), 5240 states have internal predecessors, (24844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:35,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 24844 transitions. [2021-05-22 01:58:35,729 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 24844 transitions. Word has length 29 [2021-05-22 01:58:35,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:35,729 INFO L482 AbstractCegarLoop]: Abstraction has 5241 states and 24844 transitions. [2021-05-22 01:58:35,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 24844 transitions. [2021-05-22 01:58:35,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:35,738 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:35,738 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:35,738 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-05-22 01:58:35,738 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:35,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:35,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1873354123, now seen corresponding path program 154 times [2021-05-22 01:58:35,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:35,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569271608] [2021-05-22 01:58:35,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:35,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:35,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:35,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569271608] [2021-05-22 01:58:35,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569271608] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:35,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:35,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:35,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976586092] [2021-05-22 01:58:35,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:35,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:35,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:35,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:35,850 INFO L87 Difference]: Start difference. First operand 5241 states and 24844 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:35,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:35,959 INFO L93 Difference]: Finished difference Result 11793 states and 52761 transitions. [2021-05-22 01:58:35,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:35,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:35,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:35,988 INFO L225 Difference]: With dead ends: 11793 [2021-05-22 01:58:35,988 INFO L226 Difference]: Without dead ends: 11274 [2021-05-22 01:58:35,988 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:36,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11274 states. [2021-05-22 01:58:36,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11274 to 5193. [2021-05-22 01:58:36,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5193 states, 5192 states have (on average 4.74653312788906) internal successors, (24644), 5192 states have internal predecessors, (24644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:36,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 24644 transitions. [2021-05-22 01:58:36,221 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 24644 transitions. Word has length 29 [2021-05-22 01:58:36,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:36,221 INFO L482 AbstractCegarLoop]: Abstraction has 5193 states and 24644 transitions. [2021-05-22 01:58:36,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:36,221 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 24644 transitions. [2021-05-22 01:58:36,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:36,229 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:36,230 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:36,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-05-22 01:58:36,230 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:36,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:36,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1939983755, now seen corresponding path program 155 times [2021-05-22 01:58:36,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:36,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760997325] [2021-05-22 01:58:36,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:36,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:36,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760997325] [2021-05-22 01:58:36,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760997325] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:36,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:36,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:36,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503451363] [2021-05-22 01:58:36,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:36,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:36,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:36,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:36,352 INFO L87 Difference]: Start difference. First operand 5193 states and 24644 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:36,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:36,455 INFO L93 Difference]: Finished difference Result 12051 states and 53871 transitions. [2021-05-22 01:58:36,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:36,455 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:36,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:36,483 INFO L225 Difference]: With dead ends: 12051 [2021-05-22 01:58:36,484 INFO L226 Difference]: Without dead ends: 11509 [2021-05-22 01:58:36,484 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:36,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11509 states. [2021-05-22 01:58:36,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11509 to 5301. [2021-05-22 01:58:36,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5301 states, 5300 states have (on average 4.725283018867924) internal successors, (25044), 5300 states have internal predecessors, (25044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:36,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5301 states to 5301 states and 25044 transitions. [2021-05-22 01:58:36,722 INFO L78 Accepts]: Start accepts. Automaton has 5301 states and 25044 transitions. Word has length 29 [2021-05-22 01:58:36,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:36,723 INFO L482 AbstractCegarLoop]: Abstraction has 5301 states and 25044 transitions. [2021-05-22 01:58:36,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:36,723 INFO L276 IsEmpty]: Start isEmpty. Operand 5301 states and 25044 transitions. [2021-05-22 01:58:36,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:36,731 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:36,732 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:36,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-05-22 01:58:36,732 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:36,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:36,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1850224105, now seen corresponding path program 156 times [2021-05-22 01:58:36,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:36,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028933849] [2021-05-22 01:58:36,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:36,848 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:36,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028933849] [2021-05-22 01:58:36,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028933849] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:36,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:36,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:36,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964914179] [2021-05-22 01:58:36,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:36,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:36,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:36,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:36,849 INFO L87 Difference]: Start difference. First operand 5301 states and 25044 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:36,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:36,968 INFO L93 Difference]: Finished difference Result 11980 states and 53488 transitions. [2021-05-22 01:58:36,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:36,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:36,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:36,997 INFO L225 Difference]: With dead ends: 11980 [2021-05-22 01:58:36,997 INFO L226 Difference]: Without dead ends: 11361 [2021-05-22 01:58:36,997 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:37,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11361 states. [2021-05-22 01:58:37,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11361 to 5153. [2021-05-22 01:58:37,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.752329192546584) internal successors, (24484), 5152 states have internal predecessors, (24484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:37,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24484 transitions. [2021-05-22 01:58:37,235 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24484 transitions. Word has length 29 [2021-05-22 01:58:37,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:37,235 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24484 transitions. [2021-05-22 01:58:37,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:37,235 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24484 transitions. [2021-05-22 01:58:37,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:37,243 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:37,244 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:37,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-05-22 01:58:37,244 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:37,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:37,244 INFO L82 PathProgramCache]: Analyzing trace with hash -475392663, now seen corresponding path program 157 times [2021-05-22 01:58:37,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:37,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298825283] [2021-05-22 01:58:37,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:37,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:37,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:37,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298825283] [2021-05-22 01:58:37,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298825283] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:37,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:37,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:37,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032399608] [2021-05-22 01:58:37,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:37,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:37,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:37,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:37,350 INFO L87 Difference]: Start difference. First operand 5153 states and 24484 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:37,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:37,463 INFO L93 Difference]: Finished difference Result 11598 states and 51968 transitions. [2021-05-22 01:58:37,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:37,463 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:37,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:37,492 INFO L225 Difference]: With dead ends: 11598 [2021-05-22 01:58:37,492 INFO L226 Difference]: Without dead ends: 11183 [2021-05-22 01:58:37,492 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:37,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11183 states. [2021-05-22 01:58:37,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11183 to 5225. [2021-05-22 01:58:37,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 4.744257274119449) internal successors, (24784), 5224 states have internal predecessors, (24784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:37,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 24784 transitions. [2021-05-22 01:58:37,725 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 24784 transitions. Word has length 29 [2021-05-22 01:58:37,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:37,725 INFO L482 AbstractCegarLoop]: Abstraction has 5225 states and 24784 transitions. [2021-05-22 01:58:37,725 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:37,725 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 24784 transitions. [2021-05-22 01:58:37,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:37,734 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:37,734 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:37,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-05-22 01:58:37,734 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:37,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:37,734 INFO L82 PathProgramCache]: Analyzing trace with hash 241270283, now seen corresponding path program 158 times [2021-05-22 01:58:37,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:37,734 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748621981] [2021-05-22 01:58:37,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:37,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:37,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748621981] [2021-05-22 01:58:37,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748621981] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:37,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:37,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:37,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262191986] [2021-05-22 01:58:37,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:37,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:37,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:37,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:37,850 INFO L87 Difference]: Start difference. First operand 5225 states and 24784 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:37,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:37,974 INFO L93 Difference]: Finished difference Result 11660 states and 52189 transitions. [2021-05-22 01:58:37,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:37,974 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:37,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:38,004 INFO L225 Difference]: With dead ends: 11660 [2021-05-22 01:58:38,004 INFO L226 Difference]: Without dead ends: 11135 [2021-05-22 01:58:38,004 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:38,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11135 states. [2021-05-22 01:58:38,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11135 to 5177. [2021-05-22 01:58:38,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5177 states, 5176 states have (on average 4.749613601236476) internal successors, (24584), 5176 states have internal predecessors, (24584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:38,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5177 states to 5177 states and 24584 transitions. [2021-05-22 01:58:38,238 INFO L78 Accepts]: Start accepts. Automaton has 5177 states and 24584 transitions. Word has length 29 [2021-05-22 01:58:38,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:38,238 INFO L482 AbstractCegarLoop]: Abstraction has 5177 states and 24584 transitions. [2021-05-22 01:58:38,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:38,238 INFO L276 IsEmpty]: Start isEmpty. Operand 5177 states and 24584 transitions. [2021-05-22 01:58:38,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:38,247 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:38,247 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:38,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-05-22 01:58:38,247 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:38,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:38,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1952557259, now seen corresponding path program 159 times [2021-05-22 01:58:38,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:38,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897723129] [2021-05-22 01:58:38,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:38,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:38,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:38,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897723129] [2021-05-22 01:58:38,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897723129] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:38,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:38,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:38,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734278145] [2021-05-22 01:58:38,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:38,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:38,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:38,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:38,356 INFO L87 Difference]: Start difference. First operand 5177 states and 24584 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:38,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:38,469 INFO L93 Difference]: Finished difference Result 11592 states and 51927 transitions. [2021-05-22 01:58:38,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:38,469 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:38,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:38,497 INFO L225 Difference]: With dead ends: 11592 [2021-05-22 01:58:38,497 INFO L226 Difference]: Without dead ends: 11177 [2021-05-22 01:58:38,497 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:38,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11177 states. [2021-05-22 01:58:38,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11177 to 5225. [2021-05-22 01:58:38,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 4.7396630934150075) internal successors, (24760), 5224 states have internal predecessors, (24760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:38,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 24760 transitions. [2021-05-22 01:58:38,732 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 24760 transitions. Word has length 29 [2021-05-22 01:58:38,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:38,732 INFO L482 AbstractCegarLoop]: Abstraction has 5225 states and 24760 transitions. [2021-05-22 01:58:38,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:38,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 24760 transitions. [2021-05-22 01:58:38,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:38,741 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:38,741 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:38,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-05-22 01:58:38,741 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:38,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:38,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1097168011, now seen corresponding path program 160 times [2021-05-22 01:58:38,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:38,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173745186] [2021-05-22 01:58:38,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:38,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:38,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:38,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173745186] [2021-05-22 01:58:38,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173745186] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:38,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:38,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:38,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542628805] [2021-05-22 01:58:38,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:38,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:38,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:38,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:38,839 INFO L87 Difference]: Start difference. First operand 5225 states and 24760 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:38,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:38,963 INFO L93 Difference]: Finished difference Result 11648 states and 52131 transitions. [2021-05-22 01:58:38,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:38,963 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:38,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:38,991 INFO L225 Difference]: With dead ends: 11648 [2021-05-22 01:58:38,991 INFO L226 Difference]: Without dead ends: 11129 [2021-05-22 01:58:38,991 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:39,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11129 states. [2021-05-22 01:58:39,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11129 to 5177. [2021-05-22 01:58:39,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5177 states, 5176 states have (on average 4.744976816074189) internal successors, (24560), 5176 states have internal predecessors, (24560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:39,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5177 states to 5177 states and 24560 transitions. [2021-05-22 01:58:39,222 INFO L78 Accepts]: Start accepts. Automaton has 5177 states and 24560 transitions. Word has length 29 [2021-05-22 01:58:39,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:39,222 INFO L482 AbstractCegarLoop]: Abstraction has 5177 states and 24560 transitions. [2021-05-22 01:58:39,222 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:39,222 INFO L276 IsEmpty]: Start isEmpty. Operand 5177 states and 24560 transitions. [2021-05-22 01:58:39,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:39,231 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:39,231 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:39,231 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-05-22 01:58:39,231 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:39,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:39,231 INFO L82 PathProgramCache]: Analyzing trace with hash 598895789, now seen corresponding path program 161 times [2021-05-22 01:58:39,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:39,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148876548] [2021-05-22 01:58:39,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:39,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:39,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:39,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148876548] [2021-05-22 01:58:39,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148876548] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:39,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:39,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:39,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142374728] [2021-05-22 01:58:39,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:39,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:39,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:39,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:39,324 INFO L87 Difference]: Start difference. First operand 5177 states and 24560 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:39,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:39,427 INFO L93 Difference]: Finished difference Result 11744 states and 52581 transitions. [2021-05-22 01:58:39,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:39,427 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:39,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:39,455 INFO L225 Difference]: With dead ends: 11744 [2021-05-22 01:58:39,455 INFO L226 Difference]: Without dead ends: 11267 [2021-05-22 01:58:39,455 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:39,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11267 states. [2021-05-22 01:58:39,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11267 to 5253. [2021-05-22 01:58:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5253 states, 5252 states have (on average 4.731150038080731) internal successors, (24848), 5252 states have internal predecessors, (24848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5253 states to 5253 states and 24848 transitions. [2021-05-22 01:58:39,690 INFO L78 Accepts]: Start accepts. Automaton has 5253 states and 24848 transitions. Word has length 29 [2021-05-22 01:58:39,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:39,690 INFO L482 AbstractCegarLoop]: Abstraction has 5253 states and 24848 transitions. [2021-05-22 01:58:39,690 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:39,690 INFO L276 IsEmpty]: Start isEmpty. Operand 5253 states and 24848 transitions. [2021-05-22 01:58:39,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:39,699 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:39,699 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:39,699 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-05-22 01:58:39,699 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:39,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:39,699 INFO L82 PathProgramCache]: Analyzing trace with hash -142056309, now seen corresponding path program 162 times [2021-05-22 01:58:39,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:39,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087452942] [2021-05-22 01:58:39,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:39,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:39,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:39,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087452942] [2021-05-22 01:58:39,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087452942] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:39,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:39,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:39,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115936648] [2021-05-22 01:58:39,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:39,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:39,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:39,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:39,793 INFO L87 Difference]: Start difference. First operand 5253 states and 24848 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:39,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:39,899 INFO L93 Difference]: Finished difference Result 11738 states and 52488 transitions. [2021-05-22 01:58:39,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:39,899 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:39,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:39,928 INFO L225 Difference]: With dead ends: 11738 [2021-05-22 01:58:39,929 INFO L226 Difference]: Without dead ends: 11167 [2021-05-22 01:58:39,929 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:40,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11167 states. [2021-05-22 01:58:40,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11167 to 5153. [2021-05-22 01:58:40,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.75) internal successors, (24472), 5152 states have internal predecessors, (24472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:40,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24472 transitions. [2021-05-22 01:58:40,157 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24472 transitions. Word has length 29 [2021-05-22 01:58:40,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:40,157 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24472 transitions. [2021-05-22 01:58:40,157 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:40,157 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24472 transitions. [2021-05-22 01:58:40,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:40,166 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:40,166 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:40,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-05-22 01:58:40,166 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:40,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:40,166 INFO L82 PathProgramCache]: Analyzing trace with hash -466735955, now seen corresponding path program 163 times [2021-05-22 01:58:40,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:40,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862188008] [2021-05-22 01:58:40,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:40,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:40,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:40,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862188008] [2021-05-22 01:58:40,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862188008] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:40,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:40,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:40,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660037512] [2021-05-22 01:58:40,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:40,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:40,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:40,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:40,266 INFO L87 Difference]: Start difference. First operand 5153 states and 24472 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:40,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:40,362 INFO L93 Difference]: Finished difference Result 12275 states and 54854 transitions. [2021-05-22 01:58:40,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:40,362 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:40,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:40,391 INFO L225 Difference]: With dead ends: 12275 [2021-05-22 01:58:40,391 INFO L226 Difference]: Without dead ends: 11733 [2021-05-22 01:58:40,391 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 103.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:40,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11733 states. [2021-05-22 01:58:40,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11733 to 5366. [2021-05-22 01:58:40,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5366 states, 5365 states have (on average 4.7224603914259085) internal successors, (25336), 5365 states have internal predecessors, (25336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:40,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5366 states to 5366 states and 25336 transitions. [2021-05-22 01:58:40,627 INFO L78 Accepts]: Start accepts. Automaton has 5366 states and 25336 transitions. Word has length 29 [2021-05-22 01:58:40,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:40,627 INFO L482 AbstractCegarLoop]: Abstraction has 5366 states and 25336 transitions. [2021-05-22 01:58:40,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:40,627 INFO L276 IsEmpty]: Start isEmpty. Operand 5366 states and 25336 transitions. [2021-05-22 01:58:40,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:40,635 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:40,635 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:40,636 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-05-22 01:58:40,636 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:40,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:40,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1784894347, now seen corresponding path program 164 times [2021-05-22 01:58:40,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:40,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928026320] [2021-05-22 01:58:40,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:40,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:40,738 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:40,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928026320] [2021-05-22 01:58:40,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928026320] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:40,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:40,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:40,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561381499] [2021-05-22 01:58:40,739 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:40,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:40,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:40,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:40,739 INFO L87 Difference]: Start difference. First operand 5366 states and 25336 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:40,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:40,847 INFO L93 Difference]: Finished difference Result 12210 states and 54485 transitions. [2021-05-22 01:58:40,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:40,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:40,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:40,875 INFO L225 Difference]: With dead ends: 12210 [2021-05-22 01:58:40,876 INFO L226 Difference]: Without dead ends: 11590 [2021-05-22 01:58:40,876 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:40,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11590 states. [2021-05-22 01:58:41,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11590 to 5223. [2021-05-22 01:58:41,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5223 states, 5222 states have (on average 4.7389888931443895) internal successors, (24747), 5222 states have internal predecessors, (24747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:41,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5223 states to 5223 states and 24747 transitions. [2021-05-22 01:58:41,109 INFO L78 Accepts]: Start accepts. Automaton has 5223 states and 24747 transitions. Word has length 29 [2021-05-22 01:58:41,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:41,109 INFO L482 AbstractCegarLoop]: Abstraction has 5223 states and 24747 transitions. [2021-05-22 01:58:41,109 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:41,110 INFO L276 IsEmpty]: Start isEmpty. Operand 5223 states and 24747 transitions. [2021-05-22 01:58:41,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:41,118 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:41,118 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:41,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-05-22 01:58:41,118 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:41,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:41,119 INFO L82 PathProgramCache]: Analyzing trace with hash 442869003, now seen corresponding path program 165 times [2021-05-22 01:58:41,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:41,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687265260] [2021-05-22 01:58:41,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:41,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:41,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:41,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687265260] [2021-05-22 01:58:41,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687265260] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:41,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:41,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:41,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939088824] [2021-05-22 01:58:41,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:41,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:41,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:41,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:41,229 INFO L87 Difference]: Start difference. First operand 5223 states and 24747 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:41,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:41,320 INFO L93 Difference]: Finished difference Result 12234 states and 54645 transitions. [2021-05-22 01:58:41,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:41,320 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:41,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:41,349 INFO L225 Difference]: With dead ends: 12234 [2021-05-22 01:58:41,349 INFO L226 Difference]: Without dead ends: 11692 [2021-05-22 01:58:41,349 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 111.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:41,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11692 states. [2021-05-22 01:58:41,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11692 to 5331. [2021-05-22 01:58:41,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5331 states, 5330 states have (on average 4.718011257035648) internal successors, (25147), 5330 states have internal predecessors, (25147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:41,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5331 states to 5331 states and 25147 transitions. [2021-05-22 01:58:41,583 INFO L78 Accepts]: Start accepts. Automaton has 5331 states and 25147 transitions. Word has length 29 [2021-05-22 01:58:41,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:41,583 INFO L482 AbstractCegarLoop]: Abstraction has 5331 states and 25147 transitions. [2021-05-22 01:58:41,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:41,583 INFO L276 IsEmpty]: Start isEmpty. Operand 5331 states and 25147 transitions. [2021-05-22 01:58:41,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:41,591 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:41,591 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:41,591 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-05-22 01:58:41,591 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:41,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:41,592 INFO L82 PathProgramCache]: Analyzing trace with hash 361979147, now seen corresponding path program 166 times [2021-05-22 01:58:41,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:41,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261517712] [2021-05-22 01:58:41,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:41,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:41,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261517712] [2021-05-22 01:58:41,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261517712] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:41,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:41,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:41,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545339787] [2021-05-22 01:58:41,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:41,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:41,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:41,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:41,718 INFO L87 Difference]: Start difference. First operand 5331 states and 25147 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:41,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:41,838 INFO L93 Difference]: Finished difference Result 12163 states and 54262 transitions. [2021-05-22 01:58:41,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:41,839 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:41,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:41,867 INFO L225 Difference]: With dead ends: 12163 [2021-05-22 01:58:41,867 INFO L226 Difference]: Without dead ends: 11584 [2021-05-22 01:58:41,867 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:41,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11584 states. [2021-05-22 01:58:42,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11584 to 5223. [2021-05-22 01:58:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5223 states, 5222 states have (on average 4.728648027575642) internal successors, (24693), 5222 states have internal predecessors, (24693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:42,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5223 states to 5223 states and 24693 transitions. [2021-05-22 01:58:42,100 INFO L78 Accepts]: Start accepts. Automaton has 5223 states and 24693 transitions. Word has length 29 [2021-05-22 01:58:42,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:42,100 INFO L482 AbstractCegarLoop]: Abstraction has 5223 states and 24693 transitions. [2021-05-22 01:58:42,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:42,100 INFO L276 IsEmpty]: Start isEmpty. Operand 5223 states and 24693 transitions. [2021-05-22 01:58:42,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:42,109 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:42,109 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:42,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-05-22 01:58:42,109 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:42,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:42,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1425216617, now seen corresponding path program 167 times [2021-05-22 01:58:42,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:42,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371793915] [2021-05-22 01:58:42,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:42,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:42,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:42,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371793915] [2021-05-22 01:58:42,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371793915] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:42,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:42,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:42,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357931456] [2021-05-22 01:58:42,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:42,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:42,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:42,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:42,214 INFO L87 Difference]: Start difference. First operand 5223 states and 24693 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:42,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:42,321 INFO L93 Difference]: Finished difference Result 12072 states and 53931 transitions. [2021-05-22 01:58:42,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:42,321 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:42,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:42,349 INFO L225 Difference]: With dead ends: 12072 [2021-05-22 01:58:42,349 INFO L226 Difference]: Without dead ends: 11595 [2021-05-22 01:58:42,349 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:42,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11595 states. [2021-05-22 01:58:42,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11595 to 5299. [2021-05-22 01:58:42,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5299 states, 5298 states have (on average 4.715175537938845) internal successors, (24981), 5298 states have internal predecessors, (24981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:42,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5299 states to 5299 states and 24981 transitions. [2021-05-22 01:58:42,586 INFO L78 Accepts]: Start accepts. Automaton has 5299 states and 24981 transitions. Word has length 29 [2021-05-22 01:58:42,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:42,586 INFO L482 AbstractCegarLoop]: Abstraction has 5299 states and 24981 transitions. [2021-05-22 01:58:42,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:42,587 INFO L276 IsEmpty]: Start isEmpty. Operand 5299 states and 24981 transitions. [2021-05-22 01:58:42,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:42,595 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:42,595 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:42,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-05-22 01:58:42,595 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:42,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:42,596 INFO L82 PathProgramCache]: Analyzing trace with hash -69461941, now seen corresponding path program 168 times [2021-05-22 01:58:42,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:42,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491760059] [2021-05-22 01:58:42,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:42,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:42,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491760059] [2021-05-22 01:58:42,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491760059] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:42,689 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:42,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:42,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028886274] [2021-05-22 01:58:42,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:42,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:42,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:42,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:42,690 INFO L87 Difference]: Start difference. First operand 5299 states and 24981 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:42,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:42,801 INFO L93 Difference]: Finished difference Result 12066 states and 53838 transitions. [2021-05-22 01:58:42,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:42,801 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:42,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:42,831 INFO L225 Difference]: With dead ends: 12066 [2021-05-22 01:58:42,831 INFO L226 Difference]: Without dead ends: 11421 [2021-05-22 01:58:42,831 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:42,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11421 states. [2021-05-22 01:58:43,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11421 to 5125. [2021-05-22 01:58:43,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5124 states have (on average 4.756049960967994) internal successors, (24370), 5124 states have internal predecessors, (24370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:43,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 24370 transitions. [2021-05-22 01:58:43,103 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 24370 transitions. Word has length 29 [2021-05-22 01:58:43,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:43,103 INFO L482 AbstractCegarLoop]: Abstraction has 5125 states and 24370 transitions. [2021-05-22 01:58:43,103 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:43,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 24370 transitions. [2021-05-22 01:58:43,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:43,111 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:43,111 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:43,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-05-22 01:58:43,112 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:43,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:43,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1020026571, now seen corresponding path program 169 times [2021-05-22 01:58:43,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:43,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000773740] [2021-05-22 01:58:43,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:43,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:43,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:43,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000773740] [2021-05-22 01:58:43,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000773740] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:43,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:43,219 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:43,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019362653] [2021-05-22 01:58:43,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:43,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:43,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:43,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:43,219 INFO L87 Difference]: Start difference. First operand 5125 states and 24370 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:43,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:43,327 INFO L93 Difference]: Finished difference Result 11771 states and 52765 transitions. [2021-05-22 01:58:43,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:43,327 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:43,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:43,355 INFO L225 Difference]: With dead ends: 11771 [2021-05-22 01:58:43,356 INFO L226 Difference]: Without dead ends: 11356 [2021-05-22 01:58:43,356 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:43,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11356 states. [2021-05-22 01:58:43,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11356 to 5265. [2021-05-22 01:58:43,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 5264 states have (on average 4.750379939209727) internal successors, (25006), 5264 states have internal predecessors, (25006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 25006 transitions. [2021-05-22 01:58:43,594 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 25006 transitions. Word has length 29 [2021-05-22 01:58:43,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:43,594 INFO L482 AbstractCegarLoop]: Abstraction has 5265 states and 25006 transitions. [2021-05-22 01:58:43,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:43,594 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 25006 transitions. [2021-05-22 01:58:43,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:43,602 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:43,602 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:43,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-05-22 01:58:43,603 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:43,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:43,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1520120117, now seen corresponding path program 170 times [2021-05-22 01:58:43,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:43,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043160114] [2021-05-22 01:58:43,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:43,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:43,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:43,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043160114] [2021-05-22 01:58:43,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043160114] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:43,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:43,713 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:43,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424008714] [2021-05-22 01:58:43,713 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:43,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:43,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:43,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:43,713 INFO L87 Difference]: Start difference. First operand 5265 states and 25006 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:43,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:43,809 INFO L93 Difference]: Finished difference Result 11898 states and 53244 transitions. [2021-05-22 01:58:43,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:43,810 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:43,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:43,838 INFO L225 Difference]: With dead ends: 11898 [2021-05-22 01:58:43,838 INFO L226 Difference]: Without dead ends: 11276 [2021-05-22 01:58:43,838 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:43,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11276 states. [2021-05-22 01:58:44,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11276 to 5185. [2021-05-22 01:58:44,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.754243827160494) internal successors, (24646), 5184 states have internal predecessors, (24646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:44,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24646 transitions. [2021-05-22 01:58:44,081 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24646 transitions. Word has length 29 [2021-05-22 01:58:44,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:44,081 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24646 transitions. [2021-05-22 01:58:44,081 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:44,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24646 transitions. [2021-05-22 01:58:44,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:44,090 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:44,090 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:44,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-05-22 01:58:44,090 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:44,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:44,090 INFO L82 PathProgramCache]: Analyzing trace with hash -867476887, now seen corresponding path program 171 times [2021-05-22 01:58:44,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:44,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168716332] [2021-05-22 01:58:44,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:44,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:44,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:44,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168716332] [2021-05-22 01:58:44,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168716332] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:44,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:44,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:44,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773750697] [2021-05-22 01:58:44,204 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:44,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:44,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:44,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:44,205 INFO L87 Difference]: Start difference. First operand 5185 states and 24646 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:44,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:44,342 INFO L93 Difference]: Finished difference Result 11672 states and 52318 transitions. [2021-05-22 01:58:44,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:44,343 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:44,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:44,371 INFO L225 Difference]: With dead ends: 11672 [2021-05-22 01:58:44,371 INFO L226 Difference]: Without dead ends: 11257 [2021-05-22 01:58:44,371 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:44,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11257 states. [2021-05-22 01:58:44,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11257 to 5233. [2021-05-22 01:58:44,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 4.7442660550458715) internal successors, (24822), 5232 states have internal predecessors, (24822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:44,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 24822 transitions. [2021-05-22 01:58:44,605 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 24822 transitions. Word has length 29 [2021-05-22 01:58:44,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:44,606 INFO L482 AbstractCegarLoop]: Abstraction has 5233 states and 24822 transitions. [2021-05-22 01:58:44,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:44,606 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 24822 transitions. [2021-05-22 01:58:44,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:44,614 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:44,614 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:44,614 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-05-22 01:58:44,614 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:44,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:44,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1382157813, now seen corresponding path program 172 times [2021-05-22 01:58:44,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:44,615 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563584618] [2021-05-22 01:58:44,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:44,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:44,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:44,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563584618] [2021-05-22 01:58:44,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563584618] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:44,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:44,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:44,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367875228] [2021-05-22 01:58:44,736 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:44,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:44,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:44,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:44,736 INFO L87 Difference]: Start difference. First operand 5233 states and 24822 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:44,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:44,860 INFO L93 Difference]: Finished difference Result 11732 states and 52534 transitions. [2021-05-22 01:58:44,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:44,860 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:44,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:44,888 INFO L225 Difference]: With dead ends: 11732 [2021-05-22 01:58:44,888 INFO L226 Difference]: Without dead ends: 11209 [2021-05-22 01:58:44,888 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:45,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11209 states. [2021-05-22 01:58:45,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11209 to 5185. [2021-05-22 01:58:45,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.749614197530864) internal successors, (24622), 5184 states have internal predecessors, (24622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:45,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24622 transitions. [2021-05-22 01:58:45,123 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24622 transitions. Word has length 29 [2021-05-22 01:58:45,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:45,123 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24622 transitions. [2021-05-22 01:58:45,123 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:45,123 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24622 transitions. [2021-05-22 01:58:45,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:45,132 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:45,132 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:45,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-05-22 01:58:45,132 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:45,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:45,132 INFO L82 PathProgramCache]: Analyzing trace with hash -643329525, now seen corresponding path program 173 times [2021-05-22 01:58:45,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:45,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502153785] [2021-05-22 01:58:45,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:45,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:45,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502153785] [2021-05-22 01:58:45,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502153785] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:45,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:45,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:45,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889624945] [2021-05-22 01:58:45,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:45,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:45,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:45,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:45,250 INFO L87 Difference]: Start difference. First operand 5185 states and 24622 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:45,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:45,343 INFO L93 Difference]: Finished difference Result 11988 states and 53639 transitions. [2021-05-22 01:58:45,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:45,343 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:45,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:45,372 INFO L225 Difference]: With dead ends: 11988 [2021-05-22 01:58:45,372 INFO L226 Difference]: Without dead ends: 11446 [2021-05-22 01:58:45,373 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 109.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:45,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11446 states. [2021-05-22 01:58:45,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11446 to 5295. [2021-05-22 01:58:45,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5295 states, 5294 states have (on average 4.727427276161692) internal successors, (25027), 5294 states have internal predecessors, (25027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:45,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 25027 transitions. [2021-05-22 01:58:45,606 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 25027 transitions. Word has length 29 [2021-05-22 01:58:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:45,606 INFO L482 AbstractCegarLoop]: Abstraction has 5295 states and 25027 transitions. [2021-05-22 01:58:45,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 25027 transitions. [2021-05-22 01:58:45,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:45,615 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:45,615 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:45,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-05-22 01:58:45,615 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:45,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:45,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1384281623, now seen corresponding path program 174 times [2021-05-22 01:58:45,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:45,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100943686] [2021-05-22 01:58:45,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:45,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:45,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100943686] [2021-05-22 01:58:45,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100943686] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:45,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:45,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:45,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112798419] [2021-05-22 01:58:45,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:45,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:45,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:45,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:45,743 INFO L87 Difference]: Start difference. First operand 5295 states and 25027 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:45,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:45,850 INFO L93 Difference]: Finished difference Result 11921 states and 53266 transitions. [2021-05-22 01:58:45,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:45,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:45,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:45,879 INFO L225 Difference]: With dead ends: 11921 [2021-05-22 01:58:45,879 INFO L226 Difference]: Without dead ends: 11296 [2021-05-22 01:58:45,879 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:45,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11296 states. [2021-05-22 01:58:46,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11296 to 5145. [2021-05-22 01:58:46,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.755443234836703) internal successors, (24462), 5144 states have internal predecessors, (24462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:46,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24462 transitions. [2021-05-22 01:58:46,111 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24462 transitions. Word has length 29 [2021-05-22 01:58:46,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:46,111 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24462 transitions. [2021-05-22 01:58:46,111 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:46,111 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24462 transitions. [2021-05-22 01:58:46,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:46,119 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:46,120 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:46,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-05-22 01:58:46,120 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:46,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:46,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1816893655, now seen corresponding path program 175 times [2021-05-22 01:58:46,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:46,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653716181] [2021-05-22 01:58:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:46,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:46,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653716181] [2021-05-22 01:58:46,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653716181] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:46,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:46,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:46,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585564497] [2021-05-22 01:58:46,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:46,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:46,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:46,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:46,233 INFO L87 Difference]: Start difference. First operand 5145 states and 24462 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:46,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:46,344 INFO L93 Difference]: Finished difference Result 11765 states and 52726 transitions. [2021-05-22 01:58:46,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:46,345 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:46,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:46,373 INFO L225 Difference]: With dead ends: 11765 [2021-05-22 01:58:46,373 INFO L226 Difference]: Without dead ends: 11350 [2021-05-22 01:58:46,373 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:46,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11350 states. [2021-05-22 01:58:46,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11350 to 5265. [2021-05-22 01:58:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 5264 states have (on average 4.746580547112462) internal successors, (24986), 5264 states have internal predecessors, (24986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:46,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 24986 transitions. [2021-05-22 01:58:46,607 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 24986 transitions. Word has length 29 [2021-05-22 01:58:46,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:46,607 INFO L482 AbstractCegarLoop]: Abstraction has 5265 states and 24986 transitions. [2021-05-22 01:58:46,607 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:46,607 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 24986 transitions. [2021-05-22 01:58:46,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:46,615 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:46,615 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:46,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-05-22 01:58:46,615 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:46,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:46,616 INFO L82 PathProgramCache]: Analyzing trace with hash -62073047, now seen corresponding path program 176 times [2021-05-22 01:58:46,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:46,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879443578] [2021-05-22 01:58:46,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:46,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:46,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:46,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879443578] [2021-05-22 01:58:46,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879443578] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:46,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:46,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:46,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64912661] [2021-05-22 01:58:46,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:46,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:46,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:46,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:46,729 INFO L87 Difference]: Start difference. First operand 5265 states and 24986 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:46,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:46,826 INFO L93 Difference]: Finished difference Result 11892 states and 53205 transitions. [2021-05-22 01:58:46,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:46,827 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:46,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:46,855 INFO L225 Difference]: With dead ends: 11892 [2021-05-22 01:58:46,855 INFO L226 Difference]: Without dead ends: 11270 [2021-05-22 01:58:46,855 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:46,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11270 states. [2021-05-22 01:58:47,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11270 to 5185. [2021-05-22 01:58:47,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.750385802469136) internal successors, (24626), 5184 states have internal predecessors, (24626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:47,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24626 transitions. [2021-05-22 01:58:47,090 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24626 transitions. Word has length 29 [2021-05-22 01:58:47,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:47,090 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24626 transitions. [2021-05-22 01:58:47,090 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:47,090 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24626 transitions. [2021-05-22 01:58:47,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:47,098 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:47,098 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:47,099 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-05-22 01:58:47,099 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:47,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:47,099 INFO L82 PathProgramCache]: Analyzing trace with hash 173638377, now seen corresponding path program 177 times [2021-05-22 01:58:47,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:47,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874929215] [2021-05-22 01:58:47,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:47,206 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:47,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874929215] [2021-05-22 01:58:47,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874929215] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:47,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:47,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:47,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118414367] [2021-05-22 01:58:47,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:47,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:47,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:47,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:47,207 INFO L87 Difference]: Start difference. First operand 5185 states and 24626 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:47,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:47,325 INFO L93 Difference]: Finished difference Result 11662 states and 52267 transitions. [2021-05-22 01:58:47,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:47,325 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:47,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:47,360 INFO L225 Difference]: With dead ends: 11662 [2021-05-22 01:58:47,360 INFO L226 Difference]: Without dead ends: 11247 [2021-05-22 01:58:47,360 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:47,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11247 states. [2021-05-22 01:58:47,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11247 to 5233. [2021-05-22 01:58:47,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 4.740443425076452) internal successors, (24802), 5232 states have internal predecessors, (24802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:47,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 24802 transitions. [2021-05-22 01:58:47,598 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 24802 transitions. Word has length 29 [2021-05-22 01:58:47,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:47,598 INFO L482 AbstractCegarLoop]: Abstraction has 5233 states and 24802 transitions. [2021-05-22 01:58:47,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:47,598 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 24802 transitions. [2021-05-22 01:58:47,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:47,606 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:47,606 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:47,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-05-22 01:58:47,607 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:47,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:47,607 INFO L82 PathProgramCache]: Analyzing trace with hash -956714485, now seen corresponding path program 178 times [2021-05-22 01:58:47,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:47,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184989567] [2021-05-22 01:58:47,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:47,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:47,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:47,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184989567] [2021-05-22 01:58:47,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184989567] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:47,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:47,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:47,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089734541] [2021-05-22 01:58:47,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:47,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:47,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:47,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:47,708 INFO L87 Difference]: Start difference. First operand 5233 states and 24802 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:47,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:47,820 INFO L93 Difference]: Finished difference Result 11718 states and 52471 transitions. [2021-05-22 01:58:47,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:47,820 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:47,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:47,849 INFO L225 Difference]: With dead ends: 11718 [2021-05-22 01:58:47,849 INFO L226 Difference]: Without dead ends: 11199 [2021-05-22 01:58:47,849 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:47,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11199 states. [2021-05-22 01:58:48,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11199 to 5185. [2021-05-22 01:58:48,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.745756172839506) internal successors, (24602), 5184 states have internal predecessors, (24602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24602 transitions. [2021-05-22 01:58:48,086 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24602 transitions. Word has length 29 [2021-05-22 01:58:48,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:48,086 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24602 transitions. [2021-05-22 01:58:48,086 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:48,086 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24602 transitions. [2021-05-22 01:58:48,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:48,095 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:48,095 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:48,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-05-22 01:58:48,095 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:48,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:48,095 INFO L82 PathProgramCache]: Analyzing trace with hash -890084853, now seen corresponding path program 179 times [2021-05-22 01:58:48,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:48,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104276851] [2021-05-22 01:58:48,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:48,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:48,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104276851] [2021-05-22 01:58:48,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104276851] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:48,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:48,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:48,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211191457] [2021-05-22 01:58:48,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:48,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:48,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:48,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:48,219 INFO L87 Difference]: Start difference. First operand 5185 states and 24602 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:48,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:48,324 INFO L93 Difference]: Finished difference Result 11976 states and 53581 transitions. [2021-05-22 01:58:48,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:48,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:48,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:48,353 INFO L225 Difference]: With dead ends: 11976 [2021-05-22 01:58:48,353 INFO L226 Difference]: Without dead ends: 11434 [2021-05-22 01:58:48,353 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:48,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11434 states. [2021-05-22 01:58:48,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11434 to 5293. [2021-05-22 01:58:48,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5293 states, 5292 states have (on average 4.724489795918367) internal successors, (25002), 5292 states have internal predecessors, (25002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:48,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 25002 transitions. [2021-05-22 01:58:48,593 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 25002 transitions. Word has length 29 [2021-05-22 01:58:48,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:48,593 INFO L482 AbstractCegarLoop]: Abstraction has 5293 states and 25002 transitions. [2021-05-22 01:58:48,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:48,594 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 25002 transitions. [2021-05-22 01:58:48,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:48,602 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:48,602 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:48,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-05-22 01:58:48,603 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:48,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:48,603 INFO L82 PathProgramCache]: Analyzing trace with hash -979844503, now seen corresponding path program 180 times [2021-05-22 01:58:48,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:48,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138394074] [2021-05-22 01:58:48,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:48,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:48,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:48,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138394074] [2021-05-22 01:58:48,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138394074] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:48,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:48,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:48,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387451385] [2021-05-22 01:58:48,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:48,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:48,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:48,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:48,715 INFO L87 Difference]: Start difference. First operand 5293 states and 25002 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:48,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:48,823 INFO L93 Difference]: Finished difference Result 11905 states and 53198 transitions. [2021-05-22 01:58:48,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:48,823 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:48,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:48,852 INFO L225 Difference]: With dead ends: 11905 [2021-05-22 01:58:48,852 INFO L226 Difference]: Without dead ends: 11286 [2021-05-22 01:58:48,853 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:48,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11286 states. [2021-05-22 01:58:49,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11286 to 5145. [2021-05-22 01:58:49,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.751555209953343) internal successors, (24442), 5144 states have internal predecessors, (24442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:49,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24442 transitions. [2021-05-22 01:58:49,088 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24442 transitions. Word has length 29 [2021-05-22 01:58:49,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:49,088 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24442 transitions. [2021-05-22 01:58:49,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:49,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24442 transitions. [2021-05-22 01:58:49,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:49,096 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:49,097 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:49,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-05-22 01:58:49,097 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:49,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:49,097 INFO L82 PathProgramCache]: Analyzing trace with hash 721354503, now seen corresponding path program 181 times [2021-05-22 01:58:49,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:49,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518348847] [2021-05-22 01:58:49,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:49,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:49,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:49,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518348847] [2021-05-22 01:58:49,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518348847] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:49,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:49,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:49,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485970386] [2021-05-22 01:58:49,204 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:49,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:49,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:49,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:49,204 INFO L87 Difference]: Start difference. First operand 5145 states and 24442 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:49,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:49,323 INFO L93 Difference]: Finished difference Result 11519 states and 51668 transitions. [2021-05-22 01:58:49,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:49,323 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:49,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:49,351 INFO L225 Difference]: With dead ends: 11519 [2021-05-22 01:58:49,351 INFO L226 Difference]: Without dead ends: 11104 [2021-05-22 01:58:49,351 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:49,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11104 states. [2021-05-22 01:58:49,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11104 to 5217. [2021-05-22 01:58:49,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 4.743481595092025) internal successors, (24742), 5216 states have internal predecessors, (24742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 24742 transitions. [2021-05-22 01:58:49,580 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 24742 transitions. Word has length 29 [2021-05-22 01:58:49,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:49,580 INFO L482 AbstractCegarLoop]: Abstraction has 5217 states and 24742 transitions. [2021-05-22 01:58:49,580 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:49,580 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 24742 transitions. [2021-05-22 01:58:49,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:49,589 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:49,589 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:49,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-05-22 01:58:49,589 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:49,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:49,590 INFO L82 PathProgramCache]: Analyzing trace with hash 206673577, now seen corresponding path program 182 times [2021-05-22 01:58:49,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:49,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723645752] [2021-05-22 01:58:49,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:49,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:49,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723645752] [2021-05-22 01:58:49,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723645752] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:49,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:49,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:49,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943952613] [2021-05-22 01:58:49,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:49,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:49,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:49,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:49,700 INFO L87 Difference]: Start difference. First operand 5217 states and 24742 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:49,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:49,821 INFO L93 Difference]: Finished difference Result 11579 states and 51884 transitions. [2021-05-22 01:58:49,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:49,822 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:49,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:49,849 INFO L225 Difference]: With dead ends: 11579 [2021-05-22 01:58:49,849 INFO L226 Difference]: Without dead ends: 11056 [2021-05-22 01:58:49,849 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:49,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11056 states. [2021-05-22 01:58:50,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11056 to 5169. [2021-05-22 01:58:50,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.748839009287925) internal successors, (24542), 5168 states have internal predecessors, (24542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24542 transitions. [2021-05-22 01:58:50,075 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24542 transitions. Word has length 29 [2021-05-22 01:58:50,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:50,075 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24542 transitions. [2021-05-22 01:58:50,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:50,075 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24542 transitions. [2021-05-22 01:58:50,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:50,084 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:50,084 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:50,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-05-22 01:58:50,084 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:50,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:50,084 INFO L82 PathProgramCache]: Analyzing trace with hash 240452457, now seen corresponding path program 183 times [2021-05-22 01:58:50,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:50,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89186737] [2021-05-22 01:58:50,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:50,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:50,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:50,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89186737] [2021-05-22 01:58:50,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89186737] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:50,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:50,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:50,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198599312] [2021-05-22 01:58:50,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:50,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:50,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:50,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:50,176 INFO L87 Difference]: Start difference. First operand 5169 states and 24542 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:50,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:50,307 INFO L93 Difference]: Finished difference Result 11515 states and 51632 transitions. [2021-05-22 01:58:50,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:50,307 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:50,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:50,334 INFO L225 Difference]: With dead ends: 11515 [2021-05-22 01:58:50,334 INFO L226 Difference]: Without dead ends: 11100 [2021-05-22 01:58:50,334 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:50,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11100 states. [2021-05-22 01:58:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11100 to 5217. [2021-05-22 01:58:50,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 4.73888036809816) internal successors, (24718), 5216 states have internal predecessors, (24718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:50,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 24718 transitions. [2021-05-22 01:58:50,563 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 24718 transitions. Word has length 29 [2021-05-22 01:58:50,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:50,563 INFO L482 AbstractCegarLoop]: Abstraction has 5217 states and 24718 transitions. [2021-05-22 01:58:50,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:50,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 24718 transitions. [2021-05-22 01:58:50,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:50,571 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:50,571 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:50,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-05-22 01:58:50,571 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:50,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:50,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1923628585, now seen corresponding path program 184 times [2021-05-22 01:58:50,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:50,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423243893] [2021-05-22 01:58:50,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:50,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:50,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423243893] [2021-05-22 01:58:50,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423243893] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:50,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:50,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:50,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800432719] [2021-05-22 01:58:50,664 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:50,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:50,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:50,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:50,664 INFO L87 Difference]: Start difference. First operand 5217 states and 24718 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:50,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:50,768 INFO L93 Difference]: Finished difference Result 11571 states and 51836 transitions. [2021-05-22 01:58:50,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:50,770 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:50,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:50,797 INFO L225 Difference]: With dead ends: 11571 [2021-05-22 01:58:50,798 INFO L226 Difference]: Without dead ends: 11052 [2021-05-22 01:58:50,798 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:50,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11052 states. [2021-05-22 01:58:51,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11052 to 5169. [2021-05-22 01:58:51,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.7441950464396285) internal successors, (24518), 5168 states have internal predecessors, (24518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:51,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24518 transitions. [2021-05-22 01:58:51,033 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24518 transitions. Word has length 29 [2021-05-22 01:58:51,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:51,033 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24518 transitions. [2021-05-22 01:58:51,033 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:51,033 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24518 transitions. [2021-05-22 01:58:51,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:51,041 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:51,041 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:51,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-05-22 01:58:51,041 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:51,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:51,041 INFO L82 PathProgramCache]: Analyzing trace with hash 564299083, now seen corresponding path program 185 times [2021-05-22 01:58:51,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:51,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147848960] [2021-05-22 01:58:51,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:51,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:51,143 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:51,143 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147848960] [2021-05-22 01:58:51,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147848960] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:51,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:51,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:51,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231948118] [2021-05-22 01:58:51,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:51,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:51,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:51,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:51,144 INFO L87 Difference]: Start difference. First operand 5169 states and 24518 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:51,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:51,257 INFO L93 Difference]: Finished difference Result 11663 states and 52276 transitions. [2021-05-22 01:58:51,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:51,258 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:51,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:51,285 INFO L225 Difference]: With dead ends: 11663 [2021-05-22 01:58:51,285 INFO L226 Difference]: Without dead ends: 11188 [2021-05-22 01:58:51,286 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:51,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11188 states. [2021-05-22 01:58:51,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11188 to 5245. [2021-05-22 01:58:51,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 5244 states have (on average 4.730358504958048) internal successors, (24806), 5244 states have internal predecessors, (24806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:51,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 24806 transitions. [2021-05-22 01:58:51,516 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 24806 transitions. Word has length 29 [2021-05-22 01:58:51,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:51,516 INFO L482 AbstractCegarLoop]: Abstraction has 5245 states and 24806 transitions. [2021-05-22 01:58:51,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:51,516 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 24806 transitions. [2021-05-22 01:58:51,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:51,525 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:51,525 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:51,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-05-22 01:58:51,525 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:51,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:51,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1479037911, now seen corresponding path program 186 times [2021-05-22 01:58:51,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:51,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227030835] [2021-05-22 01:58:51,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:51,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:51,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:51,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227030835] [2021-05-22 01:58:51,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227030835] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:51,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:51,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:51,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572682887] [2021-05-22 01:58:51,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:51,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:51,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:51,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:51,622 INFO L87 Difference]: Start difference. First operand 5245 states and 24806 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:51,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:51,734 INFO L93 Difference]: Finished difference Result 11659 states and 52188 transitions. [2021-05-22 01:58:51,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:51,734 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:51,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:51,761 INFO L225 Difference]: With dead ends: 11659 [2021-05-22 01:58:51,762 INFO L226 Difference]: Without dead ends: 11088 [2021-05-22 01:58:51,762 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:51,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11088 states. [2021-05-22 01:58:51,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11088 to 5145. [2021-05-22 01:58:51,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.749222395023328) internal successors, (24430), 5144 states have internal predecessors, (24430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:51,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24430 transitions. [2021-05-22 01:58:51,989 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24430 transitions. Word has length 29 [2021-05-22 01:58:51,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:51,989 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24430 transitions. [2021-05-22 01:58:51,989 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:51,989 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24430 transitions. [2021-05-22 01:58:51,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:51,998 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:51,998 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:51,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-05-22 01:58:51,998 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:51,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:51,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1845729973, now seen corresponding path program 187 times [2021-05-22 01:58:51,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:51,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864404631] [2021-05-22 01:58:51,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:52,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:52,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:52,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864404631] [2021-05-22 01:58:52,098 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864404631] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:52,098 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:52,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:52,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522643300] [2021-05-22 01:58:52,098 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:52,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:52,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:52,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:52,098 INFO L87 Difference]: Start difference. First operand 5145 states and 24430 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:52,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:52,191 INFO L93 Difference]: Finished difference Result 12114 states and 54260 transitions. [2021-05-22 01:58:52,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:52,191 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:52,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:52,219 INFO L225 Difference]: With dead ends: 12114 [2021-05-22 01:58:52,219 INFO L226 Difference]: Without dead ends: 11572 [2021-05-22 01:58:52,219 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 103.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:52,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11572 states. [2021-05-22 01:58:52,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11572 to 5309. [2021-05-22 01:58:52,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 5308 states have (on average 4.73172569706104) internal successors, (25116), 5308 states have internal predecessors, (25116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:52,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 25116 transitions. [2021-05-22 01:58:52,453 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 25116 transitions. Word has length 29 [2021-05-22 01:58:52,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:52,453 INFO L482 AbstractCegarLoop]: Abstraction has 5309 states and 25116 transitions. [2021-05-22 01:58:52,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:52,453 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 25116 transitions. [2021-05-22 01:58:52,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:52,462 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:52,462 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:52,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-05-22 01:58:52,462 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:52,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:52,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1708285225, now seen corresponding path program 188 times [2021-05-22 01:58:52,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:52,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838067298] [2021-05-22 01:58:52,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:52,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:52,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:52,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838067298] [2021-05-22 01:58:52,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838067298] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:52,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:52,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:52,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134526184] [2021-05-22 01:58:52,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:52,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:52,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:52,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:52,561 INFO L87 Difference]: Start difference. First operand 5309 states and 25116 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:52,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:52,675 INFO L93 Difference]: Finished difference Result 12047 states and 53887 transitions. [2021-05-22 01:58:52,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:52,675 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:52,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:52,703 INFO L225 Difference]: With dead ends: 12047 [2021-05-22 01:58:52,704 INFO L226 Difference]: Without dead ends: 11462 [2021-05-22 01:58:52,704 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:52,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11462 states. [2021-05-22 01:58:52,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11462 to 5199. [2021-05-22 01:58:52,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 4.7435552135436705) internal successors, (24657), 5198 states have internal predecessors, (24657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:52,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 24657 transitions. [2021-05-22 01:58:52,992 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 24657 transitions. Word has length 29 [2021-05-22 01:58:52,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:52,993 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 24657 transitions. [2021-05-22 01:58:52,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:52,993 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 24657 transitions. [2021-05-22 01:58:53,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:53,001 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:53,001 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:53,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-05-22 01:58:53,001 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:53,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:53,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1602440361, now seen corresponding path program 189 times [2021-05-22 01:58:53,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:53,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740815599] [2021-05-22 01:58:53,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:53,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:53,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740815599] [2021-05-22 01:58:53,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740815599] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:53,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:53,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:53,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455941742] [2021-05-22 01:58:53,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:53,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:53,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:53,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:53,107 INFO L87 Difference]: Start difference. First operand 5199 states and 24657 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:53,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:53,200 INFO L93 Difference]: Finished difference Result 12108 states and 54187 transitions. [2021-05-22 01:58:53,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:53,200 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:53,230 INFO L225 Difference]: With dead ends: 12108 [2021-05-22 01:58:53,230 INFO L226 Difference]: Without dead ends: 11566 [2021-05-22 01:58:53,230 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 109.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:53,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11566 states. [2021-05-22 01:58:53,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11566 to 5307. [2021-05-22 01:58:53,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5307 states, 5306 states have (on average 4.72238974745571) internal successors, (25057), 5306 states have internal predecessors, (25057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:53,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5307 states to 5307 states and 25057 transitions. [2021-05-22 01:58:53,464 INFO L78 Accepts]: Start accepts. Automaton has 5307 states and 25057 transitions. Word has length 29 [2021-05-22 01:58:53,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:53,464 INFO L482 AbstractCegarLoop]: Abstraction has 5307 states and 25057 transitions. [2021-05-22 01:58:53,464 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:53,464 INFO L276 IsEmpty]: Start isEmpty. Operand 5307 states and 25057 transitions. [2021-05-22 01:58:53,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:53,472 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:53,472 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:53,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-05-22 01:58:53,472 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:53,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:53,472 INFO L82 PathProgramCache]: Analyzing trace with hash -197675607, now seen corresponding path program 190 times [2021-05-22 01:58:53,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:53,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708958566] [2021-05-22 01:58:53,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:53,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:53,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708958566] [2021-05-22 01:58:53,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708958566] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:53,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:53,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:53,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719184804] [2021-05-22 01:58:53,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:53,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:53,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:53,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:53,578 INFO L87 Difference]: Start difference. First operand 5307 states and 25057 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:53,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:53,683 INFO L93 Difference]: Finished difference Result 12037 states and 53804 transitions. [2021-05-22 01:58:53,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:53,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:53,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:53,712 INFO L225 Difference]: With dead ends: 12037 [2021-05-22 01:58:53,712 INFO L226 Difference]: Without dead ends: 11458 [2021-05-22 01:58:53,712 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:53,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11458 states. [2021-05-22 01:58:53,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11458 to 5199. [2021-05-22 01:58:53,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 4.7331666025394385) internal successors, (24603), 5198 states have internal predecessors, (24603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:53,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 24603 transitions. [2021-05-22 01:58:53,944 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 24603 transitions. Word has length 29 [2021-05-22 01:58:53,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:53,944 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 24603 transitions. [2021-05-22 01:58:53,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:53,944 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 24603 transitions. [2021-05-22 01:58:53,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:53,952 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:53,952 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:53,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-05-22 01:58:53,952 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:53,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:53,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1348607495, now seen corresponding path program 191 times [2021-05-22 01:58:53,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:53,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891821420] [2021-05-22 01:58:53,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:54,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:54,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:54,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891821420] [2021-05-22 01:58:54,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891821420] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:54,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:54,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:54,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873883011] [2021-05-22 01:58:54,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:54,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:54,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:54,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:54,050 INFO L87 Difference]: Start difference. First operand 5199 states and 24603 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:54,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:54,161 INFO L93 Difference]: Finished difference Result 11942 states and 53463 transitions. [2021-05-22 01:58:54,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:54,161 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:54,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:54,190 INFO L225 Difference]: With dead ends: 11942 [2021-05-22 01:58:54,190 INFO L226 Difference]: Without dead ends: 11467 [2021-05-22 01:58:54,190 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:54,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11467 states. [2021-05-22 01:58:54,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11467 to 5275. [2021-05-22 01:58:54,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5275 states, 5274 states have (on average 4.719567690557452) internal successors, (24891), 5274 states have internal predecessors, (24891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:54,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 24891 transitions. [2021-05-22 01:58:54,425 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 24891 transitions. Word has length 29 [2021-05-22 01:58:54,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:54,426 INFO L482 AbstractCegarLoop]: Abstraction has 5275 states and 24891 transitions. [2021-05-22 01:58:54,426 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:54,426 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 24891 transitions. [2021-05-22 01:58:54,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:54,434 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:54,434 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:54,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-05-22 01:58:54,434 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:54,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:54,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1865297175, now seen corresponding path program 192 times [2021-05-22 01:58:54,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:54,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308328622] [2021-05-22 01:58:54,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:54,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:54,527 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:54,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308328622] [2021-05-22 01:58:54,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308328622] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:54,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:54,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:54,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418895704] [2021-05-22 01:58:54,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:54,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:54,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:54,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:54,528 INFO L87 Difference]: Start difference. First operand 5275 states and 24891 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:54,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:54,637 INFO L93 Difference]: Finished difference Result 11938 states and 53375 transitions. [2021-05-22 01:58:54,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:54,637 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:54,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:54,665 INFO L225 Difference]: With dead ends: 11938 [2021-05-22 01:58:54,666 INFO L226 Difference]: Without dead ends: 11317 [2021-05-22 01:58:54,666 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 111.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:54,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11317 states. [2021-05-22 01:58:54,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11317 to 5125. [2021-05-22 01:58:54,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5124 states have (on average 4.754098360655738) internal successors, (24360), 5124 states have internal predecessors, (24360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 24360 transitions. [2021-05-22 01:58:54,897 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 24360 transitions. Word has length 29 [2021-05-22 01:58:54,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:54,898 INFO L482 AbstractCegarLoop]: Abstraction has 5125 states and 24360 transitions. [2021-05-22 01:58:54,898 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:54,898 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 24360 transitions. [2021-05-22 01:58:54,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:54,907 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:54,907 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:54,907 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-05-22 01:58:54,908 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:54,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:54,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1579137529, now seen corresponding path program 193 times [2021-05-22 01:58:54,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:54,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221564983] [2021-05-22 01:58:54,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:55,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:55,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:55,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221564983] [2021-05-22 01:58:55,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221564983] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:55,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:55,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:55,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36230470] [2021-05-22 01:58:55,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:55,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:55,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:55,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:55,019 INFO L87 Difference]: Start difference. First operand 5125 states and 24360 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:55,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:55,139 INFO L93 Difference]: Finished difference Result 11312 states and 50753 transitions. [2021-05-22 01:58:55,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:55,140 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:55,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:55,166 INFO L225 Difference]: With dead ends: 11312 [2021-05-22 01:58:55,167 INFO L226 Difference]: Without dead ends: 10897 [2021-05-22 01:58:55,167 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:55,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10897 states. [2021-05-22 01:58:55,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10897 to 5209. [2021-05-22 01:58:55,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.7480798771121355) internal successors, (24728), 5208 states have internal predecessors, (24728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:55,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24728 transitions. [2021-05-22 01:58:55,394 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24728 transitions. Word has length 29 [2021-05-22 01:58:55,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:55,394 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24728 transitions. [2021-05-22 01:58:55,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:55,394 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24728 transitions. [2021-05-22 01:58:55,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:55,402 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:55,402 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:55,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-05-22 01:58:55,402 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:55,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:55,403 INFO L82 PathProgramCache]: Analyzing trace with hash -862474583, now seen corresponding path program 194 times [2021-05-22 01:58:55,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:55,403 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552717531] [2021-05-22 01:58:55,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:55,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:55,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:55,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552717531] [2021-05-22 01:58:55,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552717531] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:55,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:55,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:55,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093369533] [2021-05-22 01:58:55,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:55,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:55,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:55,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:55,512 INFO L87 Difference]: Start difference. First operand 5209 states and 24728 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:55,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:55,620 INFO L93 Difference]: Finished difference Result 11374 states and 50974 transitions. [2021-05-22 01:58:55,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:55,621 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:55,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:55,648 INFO L225 Difference]: With dead ends: 11374 [2021-05-22 01:58:55,648 INFO L226 Difference]: Without dead ends: 10849 [2021-05-22 01:58:55,648 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:55,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10849 states. [2021-05-22 01:58:55,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10849 to 5161. [2021-05-22 01:58:55,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.753488372093023) internal successors, (24528), 5160 states have internal predecessors, (24528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:55,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24528 transitions. [2021-05-22 01:58:55,878 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24528 transitions. Word has length 29 [2021-05-22 01:58:55,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:55,878 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24528 transitions. [2021-05-22 01:58:55,878 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:55,878 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24528 transitions. [2021-05-22 01:58:55,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:55,886 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:55,886 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:55,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-05-22 01:58:55,886 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:55,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:55,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1541870057, now seen corresponding path program 195 times [2021-05-22 01:58:55,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:55,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41029861] [2021-05-22 01:58:55,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:55,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:55,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41029861] [2021-05-22 01:58:55,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41029861] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:55,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:55,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:55,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676123019] [2021-05-22 01:58:55,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:55,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:55,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:55,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:55,999 INFO L87 Difference]: Start difference. First operand 5161 states and 24528 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:56,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:56,109 INFO L93 Difference]: Finished difference Result 11310 states and 50724 transitions. [2021-05-22 01:58:56,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:56,109 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:56,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:56,136 INFO L225 Difference]: With dead ends: 11310 [2021-05-22 01:58:56,136 INFO L226 Difference]: Without dead ends: 10895 [2021-05-22 01:58:56,136 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:56,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10895 states. [2021-05-22 01:58:56,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10895 to 5209. [2021-05-22 01:58:56,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.743471582181259) internal successors, (24704), 5208 states have internal predecessors, (24704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:56,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24704 transitions. [2021-05-22 01:58:56,364 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24704 transitions. Word has length 29 [2021-05-22 01:58:56,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:56,364 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24704 transitions. [2021-05-22 01:58:56,364 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:56,364 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24704 transitions. [2021-05-22 01:58:56,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:56,372 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:56,373 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:56,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-05-22 01:58:56,373 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:56,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:56,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1723531863, now seen corresponding path program 196 times [2021-05-22 01:58:56,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:56,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894886141] [2021-05-22 01:58:56,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:56,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:56,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894886141] [2021-05-22 01:58:56,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894886141] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:56,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:56,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:56,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445805310] [2021-05-22 01:58:56,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:56,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:56,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:56,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:56,488 INFO L87 Difference]: Start difference. First operand 5209 states and 24704 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:56,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:56,601 INFO L93 Difference]: Finished difference Result 11370 states and 50940 transitions. [2021-05-22 01:58:56,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:56,601 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:56,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:56,629 INFO L225 Difference]: With dead ends: 11370 [2021-05-22 01:58:56,629 INFO L226 Difference]: Without dead ends: 10847 [2021-05-22 01:58:56,629 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:56,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10847 states. [2021-05-22 01:58:56,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10847 to 5161. [2021-05-22 01:58:56,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.748837209302326) internal successors, (24504), 5160 states have internal predecessors, (24504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:56,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24504 transitions. [2021-05-22 01:58:56,857 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24504 transitions. Word has length 29 [2021-05-22 01:58:56,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:56,857 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24504 transitions. [2021-05-22 01:58:56,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:56,857 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24504 transitions. [2021-05-22 01:58:56,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:56,866 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:56,866 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:56,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-05-22 01:58:56,866 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:56,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:56,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1549605429, now seen corresponding path program 197 times [2021-05-22 01:58:56,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:56,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498733124] [2021-05-22 01:58:56,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:56,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:56,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498733124] [2021-05-22 01:58:56,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498733124] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:56,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:56,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:56,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595274778] [2021-05-22 01:58:56,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:56,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:56,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:56,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:56,983 INFO L87 Difference]: Start difference. First operand 5161 states and 24504 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:57,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:57,086 INFO L93 Difference]: Finished difference Result 11464 states and 51385 transitions. [2021-05-22 01:58:57,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:57,087 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:57,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:57,115 INFO L225 Difference]: With dead ends: 11464 [2021-05-22 01:58:57,115 INFO L226 Difference]: Without dead ends: 10987 [2021-05-22 01:58:57,115 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:57,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10987 states. [2021-05-22 01:58:57,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10987 to 5239. [2021-05-22 01:58:57,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5239 states, 5238 states have (on average 4.734058801069111) internal successors, (24797), 5238 states have internal predecessors, (24797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:57,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5239 states to 5239 states and 24797 transitions. [2021-05-22 01:58:57,357 INFO L78 Accepts]: Start accepts. Automaton has 5239 states and 24797 transitions. Word has length 29 [2021-05-22 01:58:57,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:57,357 INFO L482 AbstractCegarLoop]: Abstraction has 5239 states and 24797 transitions. [2021-05-22 01:58:57,358 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:57,358 INFO L276 IsEmpty]: Start isEmpty. Operand 5239 states and 24797 transitions. [2021-05-22 01:58:57,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:57,366 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:57,367 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:57,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-05-22 01:58:57,367 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:57,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:57,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1353217321, now seen corresponding path program 198 times [2021-05-22 01:58:57,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:57,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279992430] [2021-05-22 01:58:57,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:57,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:57,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:57,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279992430] [2021-05-22 01:58:57,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279992430] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:57,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:57,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:57,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383554304] [2021-05-22 01:58:57,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:57,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:57,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:57,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:57,472 INFO L87 Difference]: Start difference. First operand 5239 states and 24797 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:57,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:57,583 INFO L93 Difference]: Finished difference Result 11462 states and 51302 transitions. [2021-05-22 01:58:57,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:57,583 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:57,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:57,610 INFO L225 Difference]: With dead ends: 11462 [2021-05-22 01:58:57,611 INFO L226 Difference]: Without dead ends: 10885 [2021-05-22 01:58:57,611 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:57,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10885 states. [2021-05-22 01:58:57,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10885 to 5137. [2021-05-22 01:58:57,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.753894080996885) internal successors, (24416), 5136 states have internal predecessors, (24416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:57,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24416 transitions. [2021-05-22 01:58:57,836 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24416 transitions. Word has length 29 [2021-05-22 01:58:57,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:57,836 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24416 transitions. [2021-05-22 01:58:57,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:57,836 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24416 transitions. [2021-05-22 01:58:57,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:57,844 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:57,844 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:57,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-05-22 01:58:57,844 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:57,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:57,844 INFO L82 PathProgramCache]: Analyzing trace with hash 130464233, now seen corresponding path program 199 times [2021-05-22 01:58:57,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:57,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785751634] [2021-05-22 01:58:57,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:57,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:57,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:57,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785751634] [2021-05-22 01:58:57,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785751634] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:57,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:57,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:57,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227731358] [2021-05-22 01:58:57,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:57,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:57,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:57,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:57,952 INFO L87 Difference]: Start difference. First operand 5137 states and 24416 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:58,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:58,071 INFO L93 Difference]: Finished difference Result 11306 states and 50722 transitions. [2021-05-22 01:58:58,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:58,072 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:58,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:58,100 INFO L225 Difference]: With dead ends: 11306 [2021-05-22 01:58:58,100 INFO L226 Difference]: Without dead ends: 10891 [2021-05-22 01:58:58,100 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:58,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10891 states. [2021-05-22 01:58:58,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10891 to 5209. [2021-05-22 01:58:58,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.745775729646698) internal successors, (24716), 5208 states have internal predecessors, (24716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:58,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24716 transitions. [2021-05-22 01:58:58,330 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24716 transitions. Word has length 29 [2021-05-22 01:58:58,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:58,330 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24716 transitions. [2021-05-22 01:58:58,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:58,330 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24716 transitions. [2021-05-22 01:58:58,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:58,339 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:58,339 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:58,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-05-22 01:58:58,339 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:58,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:58,339 INFO L82 PathProgramCache]: Analyzing trace with hash 847127179, now seen corresponding path program 200 times [2021-05-22 01:58:58,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:58,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089506774] [2021-05-22 01:58:58,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:58,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:58,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089506774] [2021-05-22 01:58:58,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089506774] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:58,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:58,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:58,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495876306] [2021-05-22 01:58:58,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:58,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:58,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:58,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:58,445 INFO L87 Difference]: Start difference. First operand 5209 states and 24716 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:58,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:58,558 INFO L93 Difference]: Finished difference Result 11368 states and 50943 transitions. [2021-05-22 01:58:58,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:58,558 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:58,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:58,586 INFO L225 Difference]: With dead ends: 11368 [2021-05-22 01:58:58,586 INFO L226 Difference]: Without dead ends: 10843 [2021-05-22 01:58:58,586 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:58,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10843 states. [2021-05-22 01:58:58,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10843 to 5161. [2021-05-22 01:58:58,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.751162790697674) internal successors, (24516), 5160 states have internal predecessors, (24516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:58,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24516 transitions. [2021-05-22 01:58:58,815 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24516 transitions. Word has length 29 [2021-05-22 01:58:58,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:58,816 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24516 transitions. [2021-05-22 01:58:58,816 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:58,816 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24516 transitions. [2021-05-22 01:58:58,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:58,824 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:58,824 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:58,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-05-22 01:58:58,824 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:58,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:58,825 INFO L82 PathProgramCache]: Analyzing trace with hash 530377065, now seen corresponding path program 201 times [2021-05-22 01:58:58,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:58,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713852729] [2021-05-22 01:58:58,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:58,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:58,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:58,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713852729] [2021-05-22 01:58:58,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713852729] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:58,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:58,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:58,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840539593] [2021-05-22 01:58:58,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:58,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:58,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:58,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:58,930 INFO L87 Difference]: Start difference. First operand 5161 states and 24516 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:59,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:59,036 INFO L93 Difference]: Finished difference Result 11300 states and 50681 transitions. [2021-05-22 01:58:59,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:59,036 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:59,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:59,065 INFO L225 Difference]: With dead ends: 11300 [2021-05-22 01:58:59,065 INFO L226 Difference]: Without dead ends: 10885 [2021-05-22 01:58:59,065 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:59,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10885 states. [2021-05-22 01:58:59,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10885 to 5209. [2021-05-22 01:58:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.7411674347158215) internal successors, (24692), 5208 states have internal predecessors, (24692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:59,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24692 transitions. [2021-05-22 01:58:59,289 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24692 transitions. Word has length 29 [2021-05-22 01:58:59,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:59,289 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24692 transitions. [2021-05-22 01:58:59,289 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:59,289 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24692 transitions. [2021-05-22 01:58:59,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:59,298 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:59,298 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:59,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-05-22 01:58:59,298 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:59,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:59,298 INFO L82 PathProgramCache]: Analyzing trace with hash -325012183, now seen corresponding path program 202 times [2021-05-22 01:58:59,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:59,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949915172] [2021-05-22 01:58:59,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:59,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:59,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949915172] [2021-05-22 01:58:59,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949915172] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:59,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:59,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:59,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855673774] [2021-05-22 01:58:59,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:59,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:59,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:59,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:59,390 INFO L87 Difference]: Start difference. First operand 5209 states and 24692 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:59,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:59,501 INFO L93 Difference]: Finished difference Result 11356 states and 50885 transitions. [2021-05-22 01:58:59,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:59,501 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:59,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:59,528 INFO L225 Difference]: With dead ends: 11356 [2021-05-22 01:58:59,529 INFO L226 Difference]: Without dead ends: 10837 [2021-05-22 01:58:59,529 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 111.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:58:59,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10837 states. [2021-05-22 01:58:59,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10837 to 5161. [2021-05-22 01:58:59,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.746511627906977) internal successors, (24492), 5160 states have internal predecessors, (24492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:59,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24492 transitions. [2021-05-22 01:58:59,753 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24492 transitions. Word has length 29 [2021-05-22 01:58:59,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:58:59,753 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24492 transitions. [2021-05-22 01:58:59,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:59,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24492 transitions. [2021-05-22 01:58:59,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:58:59,761 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:58:59,761 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:58:59,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-05-22 01:58:59,761 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:58:59,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:58:59,762 INFO L82 PathProgramCache]: Analyzing trace with hash -823284405, now seen corresponding path program 203 times [2021-05-22 01:58:59,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:58:59,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258621299] [2021-05-22 01:58:59,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:58:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:58:59,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:58:59,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:58:59,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258621299] [2021-05-22 01:58:59,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258621299] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:58:59,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:58:59,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:58:59,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611068357] [2021-05-22 01:58:59,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:58:59,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:58:59,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:58:59,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:58:59,854 INFO L87 Difference]: Start difference. First operand 5161 states and 24492 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:58:59,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:58:59,962 INFO L93 Difference]: Finished difference Result 11452 states and 51335 transitions. [2021-05-22 01:58:59,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:58:59,962 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:58:59,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:58:59,989 INFO L225 Difference]: With dead ends: 11452 [2021-05-22 01:58:59,990 INFO L226 Difference]: Without dead ends: 10975 [2021-05-22 01:58:59,990 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:00,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10975 states. [2021-05-22 01:59:00,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10975 to 5237. [2021-05-22 01:59:00,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5236 states have (on average 4.732620320855615) internal successors, (24780), 5236 states have internal predecessors, (24780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 24780 transitions. [2021-05-22 01:59:00,218 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 24780 transitions. Word has length 29 [2021-05-22 01:59:00,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:00,218 INFO L482 AbstractCegarLoop]: Abstraction has 5237 states and 24780 transitions. [2021-05-22 01:59:00,218 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:00,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 24780 transitions. [2021-05-22 01:59:00,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:00,226 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:00,226 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:00,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-05-22 01:59:00,227 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:00,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:00,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1564236503, now seen corresponding path program 204 times [2021-05-22 01:59:00,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:00,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636490052] [2021-05-22 01:59:00,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:00,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:00,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636490052] [2021-05-22 01:59:00,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636490052] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:00,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:00,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:00,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947055570] [2021-05-22 01:59:00,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:00,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:00,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:00,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:00,351 INFO L87 Difference]: Start difference. First operand 5237 states and 24780 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:00,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:00,466 INFO L93 Difference]: Finished difference Result 11446 states and 51242 transitions. [2021-05-22 01:59:00,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:00,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:00,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:00,493 INFO L225 Difference]: With dead ends: 11446 [2021-05-22 01:59:00,493 INFO L226 Difference]: Without dead ends: 10875 [2021-05-22 01:59:00,493 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:00,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10875 states. [2021-05-22 01:59:00,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10875 to 5137. [2021-05-22 01:59:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.751557632398754) internal successors, (24404), 5136 states have internal predecessors, (24404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:00,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24404 transitions. [2021-05-22 01:59:00,718 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24404 transitions. Word has length 29 [2021-05-22 01:59:00,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:00,718 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24404 transitions. [2021-05-22 01:59:00,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:00,719 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24404 transitions. [2021-05-22 01:59:00,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:00,727 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:00,727 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:00,727 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-05-22 01:59:00,727 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:00,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:00,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1660463925, now seen corresponding path program 205 times [2021-05-22 01:59:00,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:00,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320239628] [2021-05-22 01:59:00,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:00,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:00,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:00,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320239628] [2021-05-22 01:59:00,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320239628] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:00,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:00,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:00,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806908543] [2021-05-22 01:59:00,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:00,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:00,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:00,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:00,836 INFO L87 Difference]: Start difference. First operand 5137 states and 24404 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:00,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:00,943 INFO L93 Difference]: Finished difference Result 11302 states and 50700 transitions. [2021-05-22 01:59:00,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:00,943 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:00,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:00,970 INFO L225 Difference]: With dead ends: 11302 [2021-05-22 01:59:00,970 INFO L226 Difference]: Without dead ends: 10887 [2021-05-22 01:59:00,970 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:01,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10887 states. [2021-05-22 01:59:01,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10887 to 5209. [2021-05-22 01:59:01,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.743471582181259) internal successors, (24704), 5208 states have internal predecessors, (24704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:01,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24704 transitions. [2021-05-22 01:59:01,198 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24704 transitions. Word has length 29 [2021-05-22 01:59:01,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:01,198 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24704 transitions. [2021-05-22 01:59:01,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:01,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24704 transitions. [2021-05-22 01:59:01,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:01,206 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:01,206 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:01,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-05-22 01:59:01,207 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:01,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:01,207 INFO L82 PathProgramCache]: Analyzing trace with hash -630898549, now seen corresponding path program 206 times [2021-05-22 01:59:01,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:01,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130840069] [2021-05-22 01:59:01,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:01,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:01,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:01,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130840069] [2021-05-22 01:59:01,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130840069] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:01,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:01,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:01,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811287492] [2021-05-22 01:59:01,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:01,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:01,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:01,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:01,312 INFO L87 Difference]: Start difference. First operand 5209 states and 24704 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:01,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:01,426 INFO L93 Difference]: Finished difference Result 11362 states and 50916 transitions. [2021-05-22 01:59:01,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:01,427 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:01,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:01,454 INFO L225 Difference]: With dead ends: 11362 [2021-05-22 01:59:01,454 INFO L226 Difference]: Without dead ends: 10839 [2021-05-22 01:59:01,454 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:01,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10839 states. [2021-05-22 01:59:01,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10839 to 5161. [2021-05-22 01:59:01,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.748837209302326) internal successors, (24504), 5160 states have internal predecessors, (24504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:01,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24504 transitions. [2021-05-22 01:59:01,681 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24504 transitions. Word has length 29 [2021-05-22 01:59:01,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:01,681 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24504 transitions. [2021-05-22 01:59:01,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:01,681 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24504 transitions. [2021-05-22 01:59:01,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:01,690 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:01,690 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:01,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-05-22 01:59:01,690 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:01,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:01,690 INFO L82 PathProgramCache]: Analyzing trace with hash 611441833, now seen corresponding path program 207 times [2021-05-22 01:59:01,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:01,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427179009] [2021-05-22 01:59:01,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:01,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:01,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:01,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427179009] [2021-05-22 01:59:01,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427179009] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:01,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:01,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:01,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675045750] [2021-05-22 01:59:01,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:01,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:01,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:01,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:01,785 INFO L87 Difference]: Start difference. First operand 5161 states and 24504 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:01,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:01,894 INFO L93 Difference]: Finished difference Result 11298 states and 50664 transitions. [2021-05-22 01:59:01,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:01,894 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:01,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:01,921 INFO L225 Difference]: With dead ends: 11298 [2021-05-22 01:59:01,921 INFO L226 Difference]: Without dead ends: 10883 [2021-05-22 01:59:01,921 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:02,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10883 states. [2021-05-22 01:59:02,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10883 to 5209. [2021-05-22 01:59:02,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.738863287250384) internal successors, (24680), 5208 states have internal predecessors, (24680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:02,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24680 transitions. [2021-05-22 01:59:02,147 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24680 transitions. Word has length 29 [2021-05-22 01:59:02,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:02,147 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24680 transitions. [2021-05-22 01:59:02,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:02,147 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24680 transitions. [2021-05-22 01:59:02,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:02,155 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:02,155 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:02,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-05-22 01:59:02,155 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:02,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:02,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1076105355, now seen corresponding path program 208 times [2021-05-22 01:59:02,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:02,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711582032] [2021-05-22 01:59:02,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:02,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:02,248 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:02,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711582032] [2021-05-22 01:59:02,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711582032] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:02,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:02,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:02,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708440335] [2021-05-22 01:59:02,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:02,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:02,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:02,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:02,249 INFO L87 Difference]: Start difference. First operand 5209 states and 24680 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:02,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:02,355 INFO L93 Difference]: Finished difference Result 11354 states and 50868 transitions. [2021-05-22 01:59:02,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:02,356 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:02,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:02,382 INFO L225 Difference]: With dead ends: 11354 [2021-05-22 01:59:02,382 INFO L226 Difference]: Without dead ends: 10835 [2021-05-22 01:59:02,382 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:02,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10835 states. [2021-05-22 01:59:02,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10835 to 5161. [2021-05-22 01:59:02,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.744186046511628) internal successors, (24480), 5160 states have internal predecessors, (24480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:02,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24480 transitions. [2021-05-22 01:59:02,607 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24480 transitions. Word has length 29 [2021-05-22 01:59:02,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:02,608 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24480 transitions. [2021-05-22 01:59:02,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:02,608 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24480 transitions. [2021-05-22 01:59:02,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:02,616 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:02,616 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:02,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-05-22 01:59:02,616 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:02,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:02,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1973754955, now seen corresponding path program 209 times [2021-05-22 01:59:02,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:02,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474630290] [2021-05-22 01:59:02,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:02,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:02,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:02,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474630290] [2021-05-22 01:59:02,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474630290] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:02,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:02,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:02,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796617671] [2021-05-22 01:59:02,759 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:02,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:02,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:02,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:02,759 INFO L87 Difference]: Start difference. First operand 5161 states and 24480 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:02,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:02,862 INFO L93 Difference]: Finished difference Result 11446 states and 51308 transitions. [2021-05-22 01:59:02,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:02,862 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:02,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:02,889 INFO L225 Difference]: With dead ends: 11446 [2021-05-22 01:59:02,889 INFO L226 Difference]: Without dead ends: 10971 [2021-05-22 01:59:02,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 162.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:03,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10971 states. [2021-05-22 01:59:03,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10971 to 5237. [2021-05-22 01:59:03,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5236 states have (on average 4.730328495034377) internal successors, (24768), 5236 states have internal predecessors, (24768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:03,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 24768 transitions. [2021-05-22 01:59:03,128 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 24768 transitions. Word has length 29 [2021-05-22 01:59:03,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:03,128 INFO L482 AbstractCegarLoop]: Abstraction has 5237 states and 24768 transitions. [2021-05-22 01:59:03,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:03,128 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 24768 transitions. [2021-05-22 01:59:03,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:03,136 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:03,136 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:03,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-05-22 01:59:03,137 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:03,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:03,137 INFO L82 PathProgramCache]: Analyzing trace with hash -69582039, now seen corresponding path program 210 times [2021-05-22 01:59:03,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:03,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4557020] [2021-05-22 01:59:03,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:03,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:03,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4557020] [2021-05-22 01:59:03,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4557020] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:03,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:03,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:03,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206979109] [2021-05-22 01:59:03,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:03,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:03,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:03,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:03,229 INFO L87 Difference]: Start difference. First operand 5237 states and 24768 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:03,339 INFO L93 Difference]: Finished difference Result 11442 states and 51220 transitions. [2021-05-22 01:59:03,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:03,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:03,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:03,367 INFO L225 Difference]: With dead ends: 11442 [2021-05-22 01:59:03,367 INFO L226 Difference]: Without dead ends: 10871 [2021-05-22 01:59:03,367 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:03,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10871 states. [2021-05-22 01:59:03,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10871 to 5137. [2021-05-22 01:59:03,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.749221183800623) internal successors, (24392), 5136 states have internal predecessors, (24392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:03,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24392 transitions. [2021-05-22 01:59:03,593 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24392 transitions. Word has length 29 [2021-05-22 01:59:03,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:03,593 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24392 transitions. [2021-05-22 01:59:03,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:03,593 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24392 transitions. [2021-05-22 01:59:03,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:03,601 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:03,601 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:03,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-05-22 01:59:03,601 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:03,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:03,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1468877843, now seen corresponding path program 211 times [2021-05-22 01:59:03,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:03,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064367524] [2021-05-22 01:59:03,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:03,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:03,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064367524] [2021-05-22 01:59:03,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064367524] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:03,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:03,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:03,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694442643] [2021-05-22 01:59:03,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:03,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:03,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:03,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:03,699 INFO L87 Difference]: Start difference. First operand 5137 states and 24392 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:03,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:03,805 INFO L93 Difference]: Finished difference Result 11590 states and 52006 transitions. [2021-05-22 01:59:03,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:03,805 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:03,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:03,833 INFO L225 Difference]: With dead ends: 11590 [2021-05-22 01:59:03,833 INFO L226 Difference]: Without dead ends: 11113 [2021-05-22 01:59:03,833 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:03,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11113 states. [2021-05-22 01:59:04,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11113 to 5253. [2021-05-22 01:59:04,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5253 states, 5252 states have (on average 4.738385376999238) internal successors, (24886), 5252 states have internal predecessors, (24886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:04,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5253 states to 5253 states and 24886 transitions. [2021-05-22 01:59:04,064 INFO L78 Accepts]: Start accepts. Automaton has 5253 states and 24886 transitions. Word has length 29 [2021-05-22 01:59:04,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:04,064 INFO L482 AbstractCegarLoop]: Abstraction has 5253 states and 24886 transitions. [2021-05-22 01:59:04,064 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:04,064 INFO L276 IsEmpty]: Start isEmpty. Operand 5253 states and 24886 transitions. [2021-05-22 01:59:04,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:04,073 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:04,073 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:04,073 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-05-22 01:59:04,073 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:04,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:04,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1433944907, now seen corresponding path program 212 times [2021-05-22 01:59:04,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:04,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423258498] [2021-05-22 01:59:04,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:04,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:04,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:04,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423258498] [2021-05-22 01:59:04,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423258498] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:04,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:04,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:04,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890405163] [2021-05-22 01:59:04,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:04,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:04,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:04,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:04,167 INFO L87 Difference]: Start difference. First operand 5253 states and 24886 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:04,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:04,273 INFO L93 Difference]: Finished difference Result 11588 states and 51923 transitions. [2021-05-22 01:59:04,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:04,274 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:04,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:04,302 INFO L225 Difference]: With dead ends: 11588 [2021-05-22 01:59:04,302 INFO L226 Difference]: Without dead ends: 11035 [2021-05-22 01:59:04,302 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:04,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11035 states. [2021-05-22 01:59:04,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11035 to 5175. [2021-05-22 01:59:04,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 5174 states have (on average 4.745844607653653) internal successors, (24555), 5174 states have internal predecessors, (24555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:04,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 24555 transitions. [2021-05-22 01:59:04,535 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 24555 transitions. Word has length 29 [2021-05-22 01:59:04,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:04,535 INFO L482 AbstractCegarLoop]: Abstraction has 5175 states and 24555 transitions. [2021-05-22 01:59:04,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:04,535 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 24555 transitions. [2021-05-22 01:59:04,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:04,543 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:04,543 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:04,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-05-22 01:59:04,543 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:04,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:04,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1979292491, now seen corresponding path program 213 times [2021-05-22 01:59:04,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:04,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440490755] [2021-05-22 01:59:04,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:04,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:04,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:04,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440490755] [2021-05-22 01:59:04,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440490755] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:04,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:04,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:04,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457134369] [2021-05-22 01:59:04,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:04,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:04,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:04,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:04,637 INFO L87 Difference]: Start difference. First operand 5175 states and 24555 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:04,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:04,742 INFO L93 Difference]: Finished difference Result 11584 states and 51949 transitions. [2021-05-22 01:59:04,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:04,743 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:04,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:04,770 INFO L225 Difference]: With dead ends: 11584 [2021-05-22 01:59:04,770 INFO L226 Difference]: Without dead ends: 11107 [2021-05-22 01:59:04,770 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:04,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11107 states. [2021-05-22 01:59:04,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11107 to 5251. [2021-05-22 01:59:04,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 4.732) internal successors, (24843), 5250 states have internal predecessors, (24843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:05,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 24843 transitions. [2021-05-22 01:59:05,002 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 24843 transitions. Word has length 29 [2021-05-22 01:59:05,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:05,002 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 24843 transitions. [2021-05-22 01:59:05,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:05,002 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 24843 transitions. [2021-05-22 01:59:05,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:05,011 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:05,011 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:05,011 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-05-22 01:59:05,011 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:05,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:05,011 INFO L82 PathProgramCache]: Analyzing trace with hash -472015925, now seen corresponding path program 214 times [2021-05-22 01:59:05,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:05,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074960667] [2021-05-22 01:59:05,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:05,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:05,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:05,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074960667] [2021-05-22 01:59:05,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074960667] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:05,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:05,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:05,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93162054] [2021-05-22 01:59:05,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:05,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:05,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:05,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:05,113 INFO L87 Difference]: Start difference. First operand 5251 states and 24843 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:05,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:05,228 INFO L93 Difference]: Finished difference Result 11578 states and 51856 transitions. [2021-05-22 01:59:05,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:05,228 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:05,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:05,255 INFO L225 Difference]: With dead ends: 11578 [2021-05-22 01:59:05,255 INFO L226 Difference]: Without dead ends: 11031 [2021-05-22 01:59:05,256 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:05,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11031 states. [2021-05-22 01:59:05,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11031 to 5175. [2021-05-22 01:59:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 5174 states have (on average 4.738500193274063) internal successors, (24517), 5174 states have internal predecessors, (24517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:05,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 24517 transitions. [2021-05-22 01:59:05,488 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 24517 transitions. Word has length 29 [2021-05-22 01:59:05,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:05,488 INFO L482 AbstractCegarLoop]: Abstraction has 5175 states and 24517 transitions. [2021-05-22 01:59:05,488 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:05,489 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 24517 transitions. [2021-05-22 01:59:05,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:05,497 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:05,497 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:05,497 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-05-22 01:59:05,497 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:05,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:05,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1951417431, now seen corresponding path program 215 times [2021-05-22 01:59:05,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:05,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723422954] [2021-05-22 01:59:05,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:05,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:05,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:05,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723422954] [2021-05-22 01:59:05,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723422954] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:05,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:05,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:05,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424688537] [2021-05-22 01:59:05,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:05,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:05,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:05,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:05,592 INFO L87 Difference]: Start difference. First operand 5175 states and 24517 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:05,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:05,698 INFO L93 Difference]: Finished difference Result 11580 states and 51901 transitions. [2021-05-22 01:59:05,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:05,698 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:05,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:05,726 INFO L225 Difference]: With dead ends: 11580 [2021-05-22 01:59:05,726 INFO L226 Difference]: Without dead ends: 11105 [2021-05-22 01:59:05,726 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:05,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11105 states. [2021-05-22 01:59:05,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11105 to 5251. [2021-05-22 01:59:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 4.7247619047619045) internal successors, (24805), 5250 states have internal predecessors, (24805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:05,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 24805 transitions. [2021-05-22 01:59:05,957 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 24805 transitions. Word has length 29 [2021-05-22 01:59:05,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:05,958 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 24805 transitions. [2021-05-22 01:59:05,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:05,958 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 24805 transitions. [2021-05-22 01:59:05,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:05,966 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:05,966 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:05,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-05-22 01:59:05,967 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:05,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:05,967 INFO L82 PathProgramCache]: Analyzing trace with hash -870354805, now seen corresponding path program 216 times [2021-05-22 01:59:05,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:05,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87907114] [2021-05-22 01:59:05,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:06,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:06,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87907114] [2021-05-22 01:59:06,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87907114] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:06,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:06,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:06,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753511491] [2021-05-22 01:59:06,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:06,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:06,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:06,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:06,061 INFO L87 Difference]: Start difference. First operand 5251 states and 24805 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:06,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:06,173 INFO L93 Difference]: Finished difference Result 11576 states and 51813 transitions. [2021-05-22 01:59:06,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:06,173 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:06,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:06,201 INFO L225 Difference]: With dead ends: 11576 [2021-05-22 01:59:06,201 INFO L226 Difference]: Without dead ends: 10979 [2021-05-22 01:59:06,201 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:06,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10979 states. [2021-05-22 01:59:06,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10979 to 5125. [2021-05-22 01:59:06,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5124 states have (on average 4.752927400468384) internal successors, (24354), 5124 states have internal predecessors, (24354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:06,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 24354 transitions. [2021-05-22 01:59:06,430 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 24354 transitions. Word has length 29 [2021-05-22 01:59:06,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:06,430 INFO L482 AbstractCegarLoop]: Abstraction has 5125 states and 24354 transitions. [2021-05-22 01:59:06,430 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 24354 transitions. [2021-05-22 01:59:06,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:06,438 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:06,439 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:06,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-05-22 01:59:06,439 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:06,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:06,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1103340525, now seen corresponding path program 217 times [2021-05-22 01:59:06,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:06,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122592736] [2021-05-22 01:59:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:06,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:06,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:06,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122592736] [2021-05-22 01:59:06,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122592736] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:06,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:06,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:06,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975654673] [2021-05-22 01:59:06,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:06,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:06,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:06,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:06,535 INFO L87 Difference]: Start difference. First operand 5125 states and 24354 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:06,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:06,637 INFO L93 Difference]: Finished difference Result 12530 states and 56033 transitions. [2021-05-22 01:59:06,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:06,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:06,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:06,669 INFO L225 Difference]: With dead ends: 12530 [2021-05-22 01:59:06,669 INFO L226 Difference]: Without dead ends: 11988 [2021-05-22 01:59:06,669 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 100.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:06,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11988 states. [2021-05-22 01:59:06,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11988 to 5406. [2021-05-22 01:59:06,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 5405 states have (on average 4.719333950046254) internal successors, (25508), 5405 states have internal predecessors, (25508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:06,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 25508 transitions. [2021-05-22 01:59:06,916 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 25508 transitions. Word has length 29 [2021-05-22 01:59:06,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:06,916 INFO L482 AbstractCegarLoop]: Abstraction has 5406 states and 25508 transitions. [2021-05-22 01:59:06,916 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:06,917 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 25508 transitions. [2021-05-22 01:59:06,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:06,926 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:06,926 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:06,926 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-05-22 01:59:06,926 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:06,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:06,926 INFO L82 PathProgramCache]: Analyzing trace with hash -939996469, now seen corresponding path program 218 times [2021-05-22 01:59:06,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:06,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171132502] [2021-05-22 01:59:06,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:07,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:07,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171132502] [2021-05-22 01:59:07,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171132502] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:07,021 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:07,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:07,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854953399] [2021-05-22 01:59:07,021 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:07,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:07,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:07,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:07,022 INFO L87 Difference]: Start difference. First operand 5406 states and 25508 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:07,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:07,147 INFO L93 Difference]: Finished difference Result 12465 states and 55664 transitions. [2021-05-22 01:59:07,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:07,147 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:07,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:07,177 INFO L225 Difference]: With dead ends: 12465 [2021-05-22 01:59:07,177 INFO L226 Difference]: Without dead ends: 11845 [2021-05-22 01:59:07,177 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:07,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11845 states. [2021-05-22 01:59:07,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11845 to 5263. [2021-05-22 01:59:07,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5262 states have (on average 4.735461801596351) internal successors, (24918), 5262 states have internal predecessors, (24918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:07,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 24918 transitions. [2021-05-22 01:59:07,418 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 24918 transitions. Word has length 29 [2021-05-22 01:59:07,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:07,418 INFO L482 AbstractCegarLoop]: Abstraction has 5263 states and 24918 transitions. [2021-05-22 01:59:07,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:07,418 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 24918 transitions. [2021-05-22 01:59:07,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:07,427 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:07,427 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:07,427 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-05-22 01:59:07,427 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:07,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:07,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1012739125, now seen corresponding path program 219 times [2021-05-22 01:59:07,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:07,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95392147] [2021-05-22 01:59:07,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:07,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:07,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:07,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95392147] [2021-05-22 01:59:07,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95392147] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:07,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:07,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:07,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969395379] [2021-05-22 01:59:07,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:07,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:07,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:07,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:07,530 INFO L87 Difference]: Start difference. First operand 5263 states and 24918 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:07,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:07,629 INFO L93 Difference]: Finished difference Result 12495 states and 55842 transitions. [2021-05-22 01:59:07,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:07,629 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:07,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:07,659 INFO L225 Difference]: With dead ends: 12495 [2021-05-22 01:59:07,659 INFO L226 Difference]: Without dead ends: 11953 [2021-05-22 01:59:07,660 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 102.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:07,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11953 states. [2021-05-22 01:59:07,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11953 to 5373. [2021-05-22 01:59:07,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5373 states, 5372 states have (on average 4.713886820551005) internal successors, (25323), 5372 states have internal predecessors, (25323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:07,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5373 states to 5373 states and 25323 transitions. [2021-05-22 01:59:07,900 INFO L78 Accepts]: Start accepts. Automaton has 5373 states and 25323 transitions. Word has length 29 [2021-05-22 01:59:07,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:07,900 INFO L482 AbstractCegarLoop]: Abstraction has 5373 states and 25323 transitions. [2021-05-22 01:59:07,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:07,900 INFO L276 IsEmpty]: Start isEmpty. Operand 5373 states and 25323 transitions. [2021-05-22 01:59:07,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:07,909 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:07,909 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:07,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-05-22 01:59:07,909 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:07,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:07,909 INFO L82 PathProgramCache]: Analyzing trace with hash -456950837, now seen corresponding path program 220 times [2021-05-22 01:59:07,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:07,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399755391] [2021-05-22 01:59:07,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:08,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:08,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399755391] [2021-05-22 01:59:08,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399755391] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:08,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:08,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:08,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699515506] [2021-05-22 01:59:08,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:08,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:08,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:08,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:08,004 INFO L87 Difference]: Start difference. First operand 5373 states and 25323 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:08,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:08,120 INFO L93 Difference]: Finished difference Result 12428 states and 55469 transitions. [2021-05-22 01:59:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:08,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:08,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:08,150 INFO L225 Difference]: With dead ends: 12428 [2021-05-22 01:59:08,150 INFO L226 Difference]: Without dead ends: 11843 [2021-05-22 01:59:08,151 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:08,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11843 states. [2021-05-22 01:59:08,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11843 to 5263. [2021-05-22 01:59:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5262 states have (on average 4.72500950209046) internal successors, (24863), 5262 states have internal predecessors, (24863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:08,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 24863 transitions. [2021-05-22 01:59:08,389 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 24863 transitions. Word has length 29 [2021-05-22 01:59:08,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:08,389 INFO L482 AbstractCegarLoop]: Abstraction has 5263 states and 24863 transitions. [2021-05-22 01:59:08,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:08,389 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 24863 transitions. [2021-05-22 01:59:08,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:08,398 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:08,398 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:08,398 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-05-22 01:59:08,398 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:08,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:08,398 INFO L82 PathProgramCache]: Analyzing trace with hash -30391511, now seen corresponding path program 221 times [2021-05-22 01:59:08,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:08,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239505660] [2021-05-22 01:59:08,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:08,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:08,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239505660] [2021-05-22 01:59:08,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239505660] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:08,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:08,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:08,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510312095] [2021-05-22 01:59:08,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:08,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:08,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:08,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:08,500 INFO L87 Difference]: Start difference. First operand 5263 states and 24863 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:08,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:08,615 INFO L93 Difference]: Finished difference Result 12333 states and 55127 transitions. [2021-05-22 01:59:08,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:08,615 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:08,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:08,647 INFO L225 Difference]: With dead ends: 12333 [2021-05-22 01:59:08,647 INFO L226 Difference]: Without dead ends: 11856 [2021-05-22 01:59:08,647 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:08,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11856 states. [2021-05-22 01:59:08,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11856 to 5341. [2021-05-22 01:59:08,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5341 states, 5340 states have (on average 4.710861423220973) internal successors, (25156), 5340 states have internal predecessors, (25156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:08,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5341 states to 5341 states and 25156 transitions. [2021-05-22 01:59:08,892 INFO L78 Accepts]: Start accepts. Automaton has 5341 states and 25156 transitions. Word has length 29 [2021-05-22 01:59:08,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:08,892 INFO L482 AbstractCegarLoop]: Abstraction has 5341 states and 25156 transitions. [2021-05-22 01:59:08,892 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:08,892 INFO L276 IsEmpty]: Start isEmpty. Operand 5341 states and 25156 transitions. [2021-05-22 01:59:08,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:08,900 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:08,901 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:08,901 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-05-22 01:59:08,901 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:08,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:08,901 INFO L82 PathProgramCache]: Analyzing trace with hash -237199477, now seen corresponding path program 222 times [2021-05-22 01:59:08,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:08,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831178964] [2021-05-22 01:59:08,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:08,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:08,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:08,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831178964] [2021-05-22 01:59:08,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831178964] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:08,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:08,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:08,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669581475] [2021-05-22 01:59:08,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:08,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:08,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:08,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:08,998 INFO L87 Difference]: Start difference. First operand 5341 states and 25156 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:09,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:09,128 INFO L93 Difference]: Finished difference Result 12331 states and 55044 transitions. [2021-05-22 01:59:09,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:09,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:09,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:09,157 INFO L225 Difference]: With dead ends: 12331 [2021-05-22 01:59:09,158 INFO L226 Difference]: Without dead ends: 11691 [2021-05-22 01:59:09,158 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:09,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11691 states. [2021-05-22 01:59:09,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11691 to 5176. [2021-05-22 01:59:09,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 5175 states have (on average 4.743768115942029) internal successors, (24549), 5175 states have internal predecessors, (24549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 24549 transitions. [2021-05-22 01:59:09,390 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 24549 transitions. Word has length 29 [2021-05-22 01:59:09,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:09,390 INFO L482 AbstractCegarLoop]: Abstraction has 5176 states and 24549 transitions. [2021-05-22 01:59:09,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 24549 transitions. [2021-05-22 01:59:09,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:09,399 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:09,399 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:09,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-05-22 01:59:09,399 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:09,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:09,399 INFO L82 PathProgramCache]: Analyzing trace with hash -919721013, now seen corresponding path program 223 times [2021-05-22 01:59:09,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:09,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515509347] [2021-05-22 01:59:09,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:09,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:09,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515509347] [2021-05-22 01:59:09,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515509347] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:09,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:09,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:09,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813978529] [2021-05-22 01:59:09,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:09,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:09,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:09,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:09,496 INFO L87 Difference]: Start difference. First operand 5176 states and 24549 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:09,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:09,603 INFO L93 Difference]: Finished difference Result 12505 states and 55912 transitions. [2021-05-22 01:59:09,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:09,603 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:09,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:09,633 INFO L225 Difference]: With dead ends: 12505 [2021-05-22 01:59:09,633 INFO L226 Difference]: Without dead ends: 11963 [2021-05-22 01:59:09,633 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 100.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:09,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11963 states. [2021-05-22 01:59:09,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11963 to 5389. [2021-05-22 01:59:09,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5389 states, 5388 states have (on average 4.716592427616926) internal successors, (25413), 5388 states have internal predecessors, (25413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:09,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5389 states to 5389 states and 25413 transitions. [2021-05-22 01:59:09,873 INFO L78 Accepts]: Start accepts. Automaton has 5389 states and 25413 transitions. Word has length 29 [2021-05-22 01:59:09,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:09,873 INFO L482 AbstractCegarLoop]: Abstraction has 5389 states and 25413 transitions. [2021-05-22 01:59:09,873 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:09,873 INFO L276 IsEmpty]: Start isEmpty. Operand 5389 states and 25413 transitions. [2021-05-22 01:59:09,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:09,882 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:09,882 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:09,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-05-22 01:59:09,882 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:09,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:09,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1331909289, now seen corresponding path program 224 times [2021-05-22 01:59:09,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:09,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354505765] [2021-05-22 01:59:09,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:09,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:09,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354505765] [2021-05-22 01:59:09,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354505765] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:09,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:09,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:09,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427206170] [2021-05-22 01:59:09,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:09,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:09,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:09,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:09,978 INFO L87 Difference]: Start difference. First operand 5389 states and 25413 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:10,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:10,088 INFO L93 Difference]: Finished difference Result 12440 states and 55543 transitions. [2021-05-22 01:59:10,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:10,088 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:10,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:10,117 INFO L225 Difference]: With dead ends: 12440 [2021-05-22 01:59:10,118 INFO L226 Difference]: Without dead ends: 11820 [2021-05-22 01:59:10,118 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:10,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11820 states. [2021-05-22 01:59:10,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11820 to 5246. [2021-05-22 01:59:10,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5246 states, 5245 states have (on average 4.732888465204957) internal successors, (24824), 5245 states have internal predecessors, (24824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:10,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5246 states to 5246 states and 24824 transitions. [2021-05-22 01:59:10,355 INFO L78 Accepts]: Start accepts. Automaton has 5246 states and 24824 transitions. Word has length 29 [2021-05-22 01:59:10,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:10,355 INFO L482 AbstractCegarLoop]: Abstraction has 5246 states and 24824 transitions. [2021-05-22 01:59:10,355 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:10,355 INFO L276 IsEmpty]: Start isEmpty. Operand 5246 states and 24824 transitions. [2021-05-22 01:59:10,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:10,364 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:10,364 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:10,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-05-22 01:59:10,364 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:10,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:10,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1309936715, now seen corresponding path program 225 times [2021-05-22 01:59:10,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:10,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598397534] [2021-05-22 01:59:10,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:10,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:10,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:10,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598397534] [2021-05-22 01:59:10,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598397534] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:10,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:10,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:10,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575306902] [2021-05-22 01:59:10,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:10,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:10,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:10,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:10,475 INFO L87 Difference]: Start difference. First operand 5246 states and 24824 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:10,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:10,569 INFO L93 Difference]: Finished difference Result 12464 states and 55703 transitions. [2021-05-22 01:59:10,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:10,569 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:10,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:10,598 INFO L225 Difference]: With dead ends: 12464 [2021-05-22 01:59:10,598 INFO L226 Difference]: Without dead ends: 11922 [2021-05-22 01:59:10,598 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:10,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11922 states. [2021-05-22 01:59:10,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11922 to 5354. [2021-05-22 01:59:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5354 states, 5353 states have (on average 4.712124042592938) internal successors, (25224), 5353 states have internal predecessors, (25224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:10,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5354 states to 5354 states and 25224 transitions. [2021-05-22 01:59:10,836 INFO L78 Accepts]: Start accepts. Automaton has 5354 states and 25224 transitions. Word has length 29 [2021-05-22 01:59:10,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:10,836 INFO L482 AbstractCegarLoop]: Abstraction has 5354 states and 25224 transitions. [2021-05-22 01:59:10,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:10,836 INFO L276 IsEmpty]: Start isEmpty. Operand 5354 states and 25224 transitions. [2021-05-22 01:59:10,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:10,845 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:10,845 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:10,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-05-22 01:59:10,845 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:10,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:10,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1229046859, now seen corresponding path program 226 times [2021-05-22 01:59:10,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:10,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470247582] [2021-05-22 01:59:10,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:10,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:10,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:10,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470247582] [2021-05-22 01:59:10,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470247582] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:10,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:10,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:10,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467868463] [2021-05-22 01:59:10,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:10,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:10,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:10,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:10,950 INFO L87 Difference]: Start difference. First operand 5354 states and 25224 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:11,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:11,061 INFO L93 Difference]: Finished difference Result 12393 states and 55320 transitions. [2021-05-22 01:59:11,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:11,061 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:11,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:11,091 INFO L225 Difference]: With dead ends: 12393 [2021-05-22 01:59:11,091 INFO L226 Difference]: Without dead ends: 11814 [2021-05-22 01:59:11,091 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:11,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11814 states. [2021-05-22 01:59:11,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11814 to 5246. [2021-05-22 01:59:11,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5246 states, 5245 states have (on average 4.7225929456625355) internal successors, (24770), 5245 states have internal predecessors, (24770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:11,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5246 states to 5246 states and 24770 transitions. [2021-05-22 01:59:11,325 INFO L78 Accepts]: Start accepts. Automaton has 5246 states and 24770 transitions. Word has length 29 [2021-05-22 01:59:11,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:11,325 INFO L482 AbstractCegarLoop]: Abstraction has 5246 states and 24770 transitions. [2021-05-22 01:59:11,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:11,325 INFO L276 IsEmpty]: Start isEmpty. Operand 5246 states and 24770 transitions. [2021-05-22 01:59:11,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:11,333 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:11,333 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:11,333 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-05-22 01:59:11,334 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:11,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:11,334 INFO L82 PathProgramCache]: Analyzing trace with hash -2002682967, now seen corresponding path program 227 times [2021-05-22 01:59:11,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:11,334 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801054383] [2021-05-22 01:59:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:11,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:11,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:11,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801054383] [2021-05-22 01:59:11,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801054383] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:11,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:11,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:11,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970323319] [2021-05-22 01:59:11,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:11,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:11,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:11,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:11,429 INFO L87 Difference]: Start difference. First operand 5246 states and 24770 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:11,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:11,537 INFO L93 Difference]: Finished difference Result 12302 states and 54989 transitions. [2021-05-22 01:59:11,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:11,537 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:11,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:11,566 INFO L225 Difference]: With dead ends: 12302 [2021-05-22 01:59:11,566 INFO L226 Difference]: Without dead ends: 11825 [2021-05-22 01:59:11,567 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:11,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11825 states. [2021-05-22 01:59:11,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11825 to 5322. [2021-05-22 01:59:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5322 states, 5321 states have (on average 4.7092651757188495) internal successors, (25058), 5321 states have internal predecessors, (25058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5322 states to 5322 states and 25058 transitions. [2021-05-22 01:59:11,802 INFO L78 Accepts]: Start accepts. Automaton has 5322 states and 25058 transitions. Word has length 29 [2021-05-22 01:59:11,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:11,802 INFO L482 AbstractCegarLoop]: Abstraction has 5322 states and 25058 transitions. [2021-05-22 01:59:11,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:11,802 INFO L276 IsEmpty]: Start isEmpty. Operand 5322 states and 25058 transitions. [2021-05-22 01:59:11,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:11,811 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:11,811 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:11,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-05-22 01:59:11,811 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:11,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:11,811 INFO L82 PathProgramCache]: Analyzing trace with hash 797605771, now seen corresponding path program 228 times [2021-05-22 01:59:11,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:11,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085353829] [2021-05-22 01:59:11,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:11,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:11,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085353829] [2021-05-22 01:59:11,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085353829] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:11,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:11,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:11,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237391271] [2021-05-22 01:59:11,937 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:11,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:11,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:11,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:11,937 INFO L87 Difference]: Start difference. First operand 5322 states and 25058 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:12,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:12,070 INFO L93 Difference]: Finished difference Result 12296 states and 54896 transitions. [2021-05-22 01:59:12,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:12,070 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:12,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:12,099 INFO L225 Difference]: With dead ends: 12296 [2021-05-22 01:59:12,099 INFO L226 Difference]: Without dead ends: 11679 [2021-05-22 01:59:12,100 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:12,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11679 states. [2021-05-22 01:59:12,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11679 to 5176. [2021-05-22 01:59:12,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 5175 states have (on average 4.737004830917875) internal successors, (24514), 5175 states have internal predecessors, (24514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:12,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 24514 transitions. [2021-05-22 01:59:12,332 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 24514 transitions. Word has length 29 [2021-05-22 01:59:12,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:12,332 INFO L482 AbstractCegarLoop]: Abstraction has 5176 states and 24514 transitions. [2021-05-22 01:59:12,333 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:12,333 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 24514 transitions. [2021-05-22 01:59:12,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:12,341 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:12,341 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:12,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-05-22 01:59:12,341 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:12,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:12,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1239264425, now seen corresponding path program 229 times [2021-05-22 01:59:12,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:12,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440605626] [2021-05-22 01:59:12,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:12,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:12,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:12,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440605626] [2021-05-22 01:59:12,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440605626] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:12,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:12,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:12,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787542846] [2021-05-22 01:59:12,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:12,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:12,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:12,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:12,440 INFO L87 Difference]: Start difference. First operand 5176 states and 24514 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:12,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:12,585 INFO L93 Difference]: Finished difference Result 12419 states and 55573 transitions. [2021-05-22 01:59:12,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:12,585 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:12,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:12,614 INFO L225 Difference]: With dead ends: 12419 [2021-05-22 01:59:12,614 INFO L226 Difference]: Without dead ends: 11877 [2021-05-22 01:59:12,614 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 150.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:12,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11877 states. [2021-05-22 01:59:12,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11877 to 5340. [2021-05-22 01:59:12,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5340 states, 5339 states have (on average 4.719985015920584) internal successors, (25200), 5339 states have internal predecessors, (25200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:12,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5340 states to 5340 states and 25200 transitions. [2021-05-22 01:59:12,849 INFO L78 Accepts]: Start accepts. Automaton has 5340 states and 25200 transitions. Word has length 29 [2021-05-22 01:59:12,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:12,849 INFO L482 AbstractCegarLoop]: Abstraction has 5340 states and 25200 transitions. [2021-05-22 01:59:12,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:12,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5340 states and 25200 transitions. [2021-05-22 01:59:12,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:12,857 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:12,857 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:12,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-05-22 01:59:12,858 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:12,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:12,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1795052713, now seen corresponding path program 230 times [2021-05-22 01:59:12,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:12,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743357751] [2021-05-22 01:59:12,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:12,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:12,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:12,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743357751] [2021-05-22 01:59:12,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743357751] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:12,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:12,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:12,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953376687] [2021-05-22 01:59:12,951 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:12,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:12,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:12,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:12,951 INFO L87 Difference]: Start difference. First operand 5340 states and 25200 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:13,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:13,075 INFO L93 Difference]: Finished difference Result 12352 states and 55200 transitions. [2021-05-22 01:59:13,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:13,075 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:13,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:13,104 INFO L225 Difference]: With dead ends: 12352 [2021-05-22 01:59:13,104 INFO L226 Difference]: Without dead ends: 11767 [2021-05-22 01:59:13,104 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:13,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11767 states. [2021-05-22 01:59:13,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11767 to 5230. [2021-05-22 01:59:13,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5230 states, 5229 states have (on average 4.731497418244406) internal successors, (24741), 5229 states have internal predecessors, (24741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:13,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5230 states to 5230 states and 24741 transitions. [2021-05-22 01:59:13,337 INFO L78 Accepts]: Start accepts. Automaton has 5230 states and 24741 transitions. Word has length 29 [2021-05-22 01:59:13,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:13,337 INFO L482 AbstractCegarLoop]: Abstraction has 5230 states and 24741 transitions. [2021-05-22 01:59:13,337 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:13,338 INFO L276 IsEmpty]: Start isEmpty. Operand 5230 states and 24741 transitions. [2021-05-22 01:59:13,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:13,346 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:13,346 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:13,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-05-22 01:59:13,346 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:13,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:13,346 INFO L82 PathProgramCache]: Analyzing trace with hash 758362379, now seen corresponding path program 231 times [2021-05-22 01:59:13,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:13,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464176407] [2021-05-22 01:59:13,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:13,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:13,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:13,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464176407] [2021-05-22 01:59:13,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464176407] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:13,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:13,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:13,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586696333] [2021-05-22 01:59:13,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:13,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:13,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:13,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:13,475 INFO L87 Difference]: Start difference. First operand 5230 states and 24741 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:13,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:13,570 INFO L93 Difference]: Finished difference Result 12413 states and 55500 transitions. [2021-05-22 01:59:13,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:13,570 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:13,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:13,600 INFO L225 Difference]: With dead ends: 12413 [2021-05-22 01:59:13,600 INFO L226 Difference]: Without dead ends: 11871 [2021-05-22 01:59:13,600 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:13,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11871 states. [2021-05-22 01:59:13,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11871 to 5338. [2021-05-22 01:59:13,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5337 states have (on average 4.710698894510024) internal successors, (25141), 5337 states have internal predecessors, (25141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:13,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 25141 transitions. [2021-05-22 01:59:13,843 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 25141 transitions. Word has length 29 [2021-05-22 01:59:13,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:13,843 INFO L482 AbstractCegarLoop]: Abstraction has 5338 states and 25141 transitions. [2021-05-22 01:59:13,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:13,844 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 25141 transitions. [2021-05-22 01:59:13,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:13,852 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:13,852 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:13,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-05-22 01:59:13,853 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:13,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:13,853 INFO L82 PathProgramCache]: Analyzing trace with hash -803965783, now seen corresponding path program 232 times [2021-05-22 01:59:13,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:13,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418079599] [2021-05-22 01:59:13,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:13,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:13,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:13,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418079599] [2021-05-22 01:59:13,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418079599] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:13,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:13,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:13,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095155672] [2021-05-22 01:59:13,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:13,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:13,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:13,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:13,957 INFO L87 Difference]: Start difference. First operand 5338 states and 25141 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:14,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:14,068 INFO L93 Difference]: Finished difference Result 12342 states and 55117 transitions. [2021-05-22 01:59:14,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:14,069 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:14,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:14,098 INFO L225 Difference]: With dead ends: 12342 [2021-05-22 01:59:14,099 INFO L226 Difference]: Without dead ends: 11763 [2021-05-22 01:59:14,099 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:14,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11763 states. [2021-05-22 01:59:14,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11763 to 5230. [2021-05-22 01:59:14,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5230 states, 5229 states have (on average 4.721170395869191) internal successors, (24687), 5229 states have internal predecessors, (24687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:14,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5230 states to 5230 states and 24687 transitions. [2021-05-22 01:59:14,338 INFO L78 Accepts]: Start accepts. Automaton has 5230 states and 24687 transitions. Word has length 29 [2021-05-22 01:59:14,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:14,338 INFO L482 AbstractCegarLoop]: Abstraction has 5230 states and 24687 transitions. [2021-05-22 01:59:14,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:14,339 INFO L276 IsEmpty]: Start isEmpty. Operand 5230 states and 24687 transitions. [2021-05-22 01:59:14,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:14,347 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:14,347 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:14,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-05-22 01:59:14,347 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:14,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:14,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1369312425, now seen corresponding path program 233 times [2021-05-22 01:59:14,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:14,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410941665] [2021-05-22 01:59:14,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:14,441 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:14,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410941665] [2021-05-22 01:59:14,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410941665] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:14,441 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:14,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:14,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127394815] [2021-05-22 01:59:14,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:14,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:14,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:14,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:14,441 INFO L87 Difference]: Start difference. First operand 5230 states and 24687 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:14,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:14,548 INFO L93 Difference]: Finished difference Result 12247 states and 54776 transitions. [2021-05-22 01:59:14,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:14,548 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:14,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:14,578 INFO L225 Difference]: With dead ends: 12247 [2021-05-22 01:59:14,578 INFO L226 Difference]: Without dead ends: 11772 [2021-05-22 01:59:14,578 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:14,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11772 states. [2021-05-22 01:59:14,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11772 to 5306. [2021-05-22 01:59:14,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5306 states, 5305 states have (on average 4.707822808671065) internal successors, (24975), 5305 states have internal predecessors, (24975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:14,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5306 states to 5306 states and 24975 transitions. [2021-05-22 01:59:14,817 INFO L78 Accepts]: Start accepts. Automaton has 5306 states and 24975 transitions. Word has length 29 [2021-05-22 01:59:14,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:14,817 INFO L482 AbstractCegarLoop]: Abstraction has 5306 states and 24975 transitions. [2021-05-22 01:59:14,817 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:14,817 INFO L276 IsEmpty]: Start isEmpty. Operand 5306 states and 24975 transitions. [2021-05-22 01:59:14,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:14,825 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:14,826 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:14,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-05-22 01:59:14,826 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:14,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:14,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1844592245, now seen corresponding path program 234 times [2021-05-22 01:59:14,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:14,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199959145] [2021-05-22 01:59:14,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:14,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:14,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:14,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199959145] [2021-05-22 01:59:14,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199959145] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:14,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:14,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:14,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028162749] [2021-05-22 01:59:14,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:14,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:14,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:14,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:14,928 INFO L87 Difference]: Start difference. First operand 5306 states and 24975 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:15,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:15,038 INFO L93 Difference]: Finished difference Result 12243 states and 54688 transitions. [2021-05-22 01:59:15,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:15,038 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:15,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:15,068 INFO L225 Difference]: With dead ends: 12243 [2021-05-22 01:59:15,068 INFO L226 Difference]: Without dead ends: 11642 [2021-05-22 01:59:15,068 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:15,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11642 states. [2021-05-22 01:59:15,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11642 to 5176. [2021-05-22 01:59:15,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 5175 states have (on average 4.731787439613527) internal successors, (24487), 5175 states have internal predecessors, (24487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:15,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 24487 transitions. [2021-05-22 01:59:15,309 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 24487 transitions. Word has length 29 [2021-05-22 01:59:15,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:15,309 INFO L482 AbstractCegarLoop]: Abstraction has 5176 states and 24487 transitions. [2021-05-22 01:59:15,309 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:15,309 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 24487 transitions. [2021-05-22 01:59:15,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:15,318 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:15,318 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:15,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-05-22 01:59:15,318 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:15,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:15,318 INFO L82 PathProgramCache]: Analyzing trace with hash -2083306361, now seen corresponding path program 235 times [2021-05-22 01:59:15,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:15,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531617532] [2021-05-22 01:59:15,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:15,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:15,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:15,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531617532] [2021-05-22 01:59:15,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531617532] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:15,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:15,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:15,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381909534] [2021-05-22 01:59:15,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:15,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:15,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:15,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:15,414 INFO L87 Difference]: Start difference. First operand 5176 states and 24487 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:15,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:15,524 INFO L93 Difference]: Finished difference Result 12112 states and 54260 transitions. [2021-05-22 01:59:15,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:15,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:15,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:15,554 INFO L225 Difference]: With dead ends: 12112 [2021-05-22 01:59:15,554 INFO L226 Difference]: Without dead ends: 11635 [2021-05-22 01:59:15,554 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:15,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11635 states. [2021-05-22 01:59:15,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11635 to 5292. [2021-05-22 01:59:15,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5292 states, 5291 states have (on average 4.721413721413722) internal successors, (24981), 5291 states have internal predecessors, (24981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 24981 transitions. [2021-05-22 01:59:15,795 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 24981 transitions. Word has length 29 [2021-05-22 01:59:15,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:15,795 INFO L482 AbstractCegarLoop]: Abstraction has 5292 states and 24981 transitions. [2021-05-22 01:59:15,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 24981 transitions. [2021-05-22 01:59:15,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:15,803 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:15,803 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:15,803 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-05-22 01:59:15,803 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:15,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:15,804 INFO L82 PathProgramCache]: Analyzing trace with hash 2004852969, now seen corresponding path program 236 times [2021-05-22 01:59:15,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:15,804 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654651334] [2021-05-22 01:59:15,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:15,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:15,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654651334] [2021-05-22 01:59:15,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654651334] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:15,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:15,927 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:15,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253962618] [2021-05-22 01:59:15,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:15,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:15,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:15,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:15,928 INFO L87 Difference]: Start difference. First operand 5292 states and 24981 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:16,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:16,038 INFO L93 Difference]: Finished difference Result 12110 states and 54177 transitions. [2021-05-22 01:59:16,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:16,038 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:16,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:16,068 INFO L225 Difference]: With dead ends: 12110 [2021-05-22 01:59:16,068 INFO L226 Difference]: Without dead ends: 11557 [2021-05-22 01:59:16,068 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:16,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11557 states. [2021-05-22 01:59:16,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11557 to 5214. [2021-05-22 01:59:16,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5214 states, 5213 states have (on average 4.7285632073662) internal successors, (24650), 5213 states have internal predecessors, (24650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:16,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 24650 transitions. [2021-05-22 01:59:16,303 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 24650 transitions. Word has length 29 [2021-05-22 01:59:16,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:16,303 INFO L482 AbstractCegarLoop]: Abstraction has 5214 states and 24650 transitions. [2021-05-22 01:59:16,303 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:16,304 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 24650 transitions. [2021-05-22 01:59:16,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:16,312 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:16,312 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:16,312 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-05-22 01:59:16,312 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:16,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:16,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1730758889, now seen corresponding path program 237 times [2021-05-22 01:59:16,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:16,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289113308] [2021-05-22 01:59:16,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:16,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:16,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289113308] [2021-05-22 01:59:16,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289113308] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:16,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:16,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:16,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405810426] [2021-05-22 01:59:16,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:16,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:16,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:16,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:16,407 INFO L87 Difference]: Start difference. First operand 5214 states and 24650 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:16,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:16,518 INFO L93 Difference]: Finished difference Result 12106 states and 54203 transitions. [2021-05-22 01:59:16,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:16,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:16,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:16,548 INFO L225 Difference]: With dead ends: 12106 [2021-05-22 01:59:16,548 INFO L226 Difference]: Without dead ends: 11629 [2021-05-22 01:59:16,549 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:16,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11629 states. [2021-05-22 01:59:16,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11629 to 5290. [2021-05-22 01:59:16,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 5289 states have (on average 4.715069011155228) internal successors, (24938), 5289 states have internal predecessors, (24938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 24938 transitions. [2021-05-22 01:59:16,785 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 24938 transitions. Word has length 29 [2021-05-22 01:59:16,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:16,785 INFO L482 AbstractCegarLoop]: Abstraction has 5290 states and 24938 transitions. [2021-05-22 01:59:16,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:16,785 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 24938 transitions. [2021-05-22 01:59:16,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:16,794 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:16,794 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:16,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-05-22 01:59:16,794 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:16,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:16,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1245357975, now seen corresponding path program 238 times [2021-05-22 01:59:16,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:16,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66316936] [2021-05-22 01:59:16,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:16,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:16,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66316936] [2021-05-22 01:59:16,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66316936] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:16,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:16,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:16,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451919938] [2021-05-22 01:59:16,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:16,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:16,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:16,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:16,888 INFO L87 Difference]: Start difference. First operand 5290 states and 24938 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:16,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:16,998 INFO L93 Difference]: Finished difference Result 12100 states and 54110 transitions. [2021-05-22 01:59:16,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:16,999 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:16,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:17,028 INFO L225 Difference]: With dead ends: 12100 [2021-05-22 01:59:17,028 INFO L226 Difference]: Without dead ends: 11553 [2021-05-22 01:59:17,028 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:17,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11553 states. [2021-05-22 01:59:17,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11553 to 5214. [2021-05-22 01:59:17,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5214 states, 5213 states have (on average 4.721273738730098) internal successors, (24612), 5213 states have internal predecessors, (24612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:17,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 24612 transitions. [2021-05-22 01:59:17,264 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 24612 transitions. Word has length 29 [2021-05-22 01:59:17,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:17,265 INFO L482 AbstractCegarLoop]: Abstraction has 5214 states and 24612 transitions. [2021-05-22 01:59:17,265 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:17,265 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 24612 transitions. [2021-05-22 01:59:17,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:17,273 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:17,273 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:17,273 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-05-22 01:59:17,273 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:17,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:17,273 INFO L82 PathProgramCache]: Analyzing trace with hash 137835595, now seen corresponding path program 239 times [2021-05-22 01:59:17,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:17,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87962298] [2021-05-22 01:59:17,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:17,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:17,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:17,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87962298] [2021-05-22 01:59:17,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87962298] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:17,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:17,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:17,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650732011] [2021-05-22 01:59:17,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:17,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:17,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:17,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:17,377 INFO L87 Difference]: Start difference. First operand 5214 states and 24612 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:17,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:17,484 INFO L93 Difference]: Finished difference Result 12102 states and 54155 transitions. [2021-05-22 01:59:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:17,484 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:17,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:17,514 INFO L225 Difference]: With dead ends: 12102 [2021-05-22 01:59:17,514 INFO L226 Difference]: Without dead ends: 11627 [2021-05-22 01:59:17,514 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:17,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11627 states. [2021-05-22 01:59:17,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11627 to 5290. [2021-05-22 01:59:17,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 5289 states have (on average 4.707884288145207) internal successors, (24900), 5289 states have internal predecessors, (24900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:17,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 24900 transitions. [2021-05-22 01:59:17,749 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 24900 transitions. Word has length 29 [2021-05-22 01:59:17,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:17,749 INFO L482 AbstractCegarLoop]: Abstraction has 5290 states and 24900 transitions. [2021-05-22 01:59:17,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:17,749 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 24900 transitions. [2021-05-22 01:59:17,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:17,758 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:17,758 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:17,758 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-05-22 01:59:17,758 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:17,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:17,758 INFO L82 PathProgramCache]: Analyzing trace with hash -708961367, now seen corresponding path program 240 times [2021-05-22 01:59:17,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:17,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657170120] [2021-05-22 01:59:17,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:17,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:17,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:17,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657170120] [2021-05-22 01:59:17,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657170120] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:17,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:17,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:17,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523982062] [2021-05-22 01:59:17,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:17,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:17,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:17,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:17,861 INFO L87 Difference]: Start difference. First operand 5290 states and 24900 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:17,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:17,975 INFO L93 Difference]: Finished difference Result 12098 states and 54067 transitions. [2021-05-22 01:59:17,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:17,975 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:17,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:18,005 INFO L225 Difference]: With dead ends: 12098 [2021-05-22 01:59:18,005 INFO L226 Difference]: Without dead ends: 11440 [2021-05-22 01:59:18,005 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:18,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11440 states. [2021-05-22 01:59:18,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11440 to 5103. [2021-05-22 01:59:18,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5103 states, 5102 states have (on average 4.759506076048608) internal successors, (24283), 5102 states have internal predecessors, (24283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:18,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5103 states to 5103 states and 24283 transitions. [2021-05-22 01:59:18,240 INFO L78 Accepts]: Start accepts. Automaton has 5103 states and 24283 transitions. Word has length 29 [2021-05-22 01:59:18,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:18,240 INFO L482 AbstractCegarLoop]: Abstraction has 5103 states and 24283 transitions. [2021-05-22 01:59:18,240 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:18,240 INFO L276 IsEmpty]: Start isEmpty. Operand 5103 states and 24283 transitions. [2021-05-22 01:59:18,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:18,249 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:18,249 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:18,249 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-05-22 01:59:18,249 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:18,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:18,249 INFO L82 PathProgramCache]: Analyzing trace with hash 545987019, now seen corresponding path program 241 times [2021-05-22 01:59:18,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:18,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185028226] [2021-05-22 01:59:18,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:18,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:18,373 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:18,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185028226] [2021-05-22 01:59:18,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185028226] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:18,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:18,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:18,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383125161] [2021-05-22 01:59:18,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:18,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:18,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:18,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:18,374 INFO L87 Difference]: Start difference. First operand 5103 states and 24283 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:18,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:18,492 INFO L93 Difference]: Finished difference Result 11435 states and 51030 transitions. [2021-05-22 01:59:18,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:18,493 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:18,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:18,521 INFO L225 Difference]: With dead ends: 11435 [2021-05-22 01:59:18,521 INFO L226 Difference]: Without dead ends: 11020 [2021-05-22 01:59:18,522 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:18,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11020 states. [2021-05-22 01:59:18,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11020 to 5275. [2021-05-22 01:59:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5275 states, 5274 states have (on average 4.752180508153204) internal successors, (25063), 5274 states have internal predecessors, (25063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 25063 transitions. [2021-05-22 01:59:18,754 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 25063 transitions. Word has length 29 [2021-05-22 01:59:18,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:18,754 INFO L482 AbstractCegarLoop]: Abstraction has 5275 states and 25063 transitions. [2021-05-22 01:59:18,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:18,754 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 25063 transitions. [2021-05-22 01:59:18,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:18,762 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:18,762 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:18,762 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-05-22 01:59:18,762 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:18,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:18,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1994159669, now seen corresponding path program 242 times [2021-05-22 01:59:18,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:18,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048866597] [2021-05-22 01:59:18,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:18,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:18,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048866597] [2021-05-22 01:59:18,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048866597] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:18,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:18,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:18,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75583294] [2021-05-22 01:59:18,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:18,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:18,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:18,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:18,887 INFO L87 Difference]: Start difference. First operand 5275 states and 25063 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:18,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:18,996 INFO L93 Difference]: Finished difference Result 11562 states and 51509 transitions. [2021-05-22 01:59:18,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:18,996 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:18,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:19,023 INFO L225 Difference]: With dead ends: 11562 [2021-05-22 01:59:19,024 INFO L226 Difference]: Without dead ends: 10940 [2021-05-22 01:59:19,024 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:19,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10940 states. [2021-05-22 01:59:19,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10940 to 5195. [2021-05-22 01:59:19,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.756064690026954) internal successors, (24703), 5194 states have internal predecessors, (24703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:19,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24703 transitions. [2021-05-22 01:59:19,254 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24703 transitions. Word has length 29 [2021-05-22 01:59:19,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:19,254 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24703 transitions. [2021-05-22 01:59:19,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:19,254 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24703 transitions. [2021-05-22 01:59:19,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:19,262 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:19,263 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:19,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-05-22 01:59:19,263 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:19,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:19,263 INFO L82 PathProgramCache]: Analyzing trace with hash 326185163, now seen corresponding path program 243 times [2021-05-22 01:59:19,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:19,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603490092] [2021-05-22 01:59:19,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:19,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:19,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603490092] [2021-05-22 01:59:19,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603490092] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:19,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:19,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:19,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706887841] [2021-05-22 01:59:19,384 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:19,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:19,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:19,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:19,385 INFO L87 Difference]: Start difference. First operand 5195 states and 24703 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:19,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:19,495 INFO L93 Difference]: Finished difference Result 11338 states and 50588 transitions. [2021-05-22 01:59:19,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:19,496 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:19,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:19,523 INFO L225 Difference]: With dead ends: 11338 [2021-05-22 01:59:19,523 INFO L226 Difference]: Without dead ends: 10923 [2021-05-22 01:59:19,523 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:19,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10923 states. [2021-05-22 01:59:19,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10923 to 5243. [2021-05-22 01:59:19,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 5242 states have (on average 4.746089278901183) internal successors, (24879), 5242 states have internal predecessors, (24879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:19,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 24879 transitions. [2021-05-22 01:59:19,751 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 24879 transitions. Word has length 29 [2021-05-22 01:59:19,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:19,751 INFO L482 AbstractCegarLoop]: Abstraction has 5243 states and 24879 transitions. [2021-05-22 01:59:19,752 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:19,752 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 24879 transitions. [2021-05-22 01:59:19,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:19,760 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:19,760 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:19,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-05-22 01:59:19,760 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:19,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:19,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1042848109, now seen corresponding path program 244 times [2021-05-22 01:59:19,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:19,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847178617] [2021-05-22 01:59:19,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:19,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:19,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:19,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847178617] [2021-05-22 01:59:19,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847178617] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:19,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:19,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:19,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659361239] [2021-05-22 01:59:19,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:19,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:19,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:19,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:19,884 INFO L87 Difference]: Start difference. First operand 5243 states and 24879 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:19,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:19,987 INFO L93 Difference]: Finished difference Result 11400 states and 50809 transitions. [2021-05-22 01:59:19,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:19,987 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:20,015 INFO L225 Difference]: With dead ends: 11400 [2021-05-22 01:59:20,015 INFO L226 Difference]: Without dead ends: 10875 [2021-05-22 01:59:20,015 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:20,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10875 states. [2021-05-22 01:59:20,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10875 to 5195. [2021-05-22 01:59:20,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.751443973815942) internal successors, (24679), 5194 states have internal predecessors, (24679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:20,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24679 transitions. [2021-05-22 01:59:20,242 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24679 transitions. Word has length 29 [2021-05-22 01:59:20,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:20,242 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24679 transitions. [2021-05-22 01:59:20,242 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:20,242 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24679 transitions. [2021-05-22 01:59:20,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:20,250 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:20,250 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:20,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-05-22 01:59:20,250 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:20,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:20,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1168893587, now seen corresponding path program 245 times [2021-05-22 01:59:20,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:20,251 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729066348] [2021-05-22 01:59:20,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:20,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:20,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:20,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729066348] [2021-05-22 01:59:20,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729066348] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:20,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:20,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:20,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050603181] [2021-05-22 01:59:20,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:20,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:20,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:20,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:20,364 INFO L87 Difference]: Start difference. First operand 5195 states and 24679 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:20,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:20,457 INFO L93 Difference]: Finished difference Result 11687 states and 52024 transitions. [2021-05-22 01:59:20,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:20,457 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:20,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:20,484 INFO L225 Difference]: With dead ends: 11687 [2021-05-22 01:59:20,484 INFO L226 Difference]: Without dead ends: 11145 [2021-05-22 01:59:20,484 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:20,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11145 states. [2021-05-22 01:59:20,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11145 to 5338. [2021-05-22 01:59:20,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5337 states have (on average 4.721379051901818) internal successors, (25198), 5337 states have internal predecessors, (25198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:20,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 25198 transitions. [2021-05-22 01:59:20,716 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 25198 transitions. Word has length 29 [2021-05-22 01:59:20,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:20,716 INFO L482 AbstractCegarLoop]: Abstraction has 5338 states and 25198 transitions. [2021-05-22 01:59:20,716 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:20,716 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 25198 transitions. [2021-05-22 01:59:20,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:20,725 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:20,725 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:20,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-05-22 01:59:20,725 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:20,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:20,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1082736715, now seen corresponding path program 246 times [2021-05-22 01:59:20,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:20,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780238903] [2021-05-22 01:59:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:20,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:20,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:20,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780238903] [2021-05-22 01:59:20,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780238903] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:20,838 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:20,838 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:20,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512186892] [2021-05-22 01:59:20,838 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:20,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:20,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:20,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:20,838 INFO L87 Difference]: Start difference. First operand 5338 states and 25198 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:20,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:20,945 INFO L93 Difference]: Finished difference Result 11622 states and 51655 transitions. [2021-05-22 01:59:20,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:20,945 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:20,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:20,972 INFO L225 Difference]: With dead ends: 11622 [2021-05-22 01:59:20,972 INFO L226 Difference]: Without dead ends: 10946 [2021-05-22 01:59:20,972 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:21,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10946 states. [2021-05-22 01:59:21,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10946 to 5139. [2021-05-22 01:59:21,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.758855585831062) internal successors, (24451), 5138 states have internal predecessors, (24451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:21,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24451 transitions. [2021-05-22 01:59:21,202 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24451 transitions. Word has length 29 [2021-05-22 01:59:21,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:21,202 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24451 transitions. [2021-05-22 01:59:21,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:21,202 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24451 transitions. [2021-05-22 01:59:21,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:21,211 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:21,211 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:21,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-05-22 01:59:21,211 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:21,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:21,211 INFO L82 PathProgramCache]: Analyzing trace with hash -262545845, now seen corresponding path program 247 times [2021-05-22 01:59:21,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:21,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393791723] [2021-05-22 01:59:21,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:21,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:21,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:21,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393791723] [2021-05-22 01:59:21,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393791723] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:21,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:21,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:21,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018478162] [2021-05-22 01:59:21,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:21,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:21,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:21,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:21,337 INFO L87 Difference]: Start difference. First operand 5139 states and 24451 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:21,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:21,446 INFO L93 Difference]: Finished difference Result 11270 states and 50287 transitions. [2021-05-22 01:59:21,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:21,447 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:21,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:21,474 INFO L225 Difference]: With dead ends: 11270 [2021-05-22 01:59:21,474 INFO L226 Difference]: Without dead ends: 10855 [2021-05-22 01:59:21,474 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:21,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10855 states. [2021-05-22 01:59:21,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10855 to 5251. [2021-05-22 01:59:21,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 4.7487619047619045) internal successors, (24931), 5250 states have internal predecessors, (24931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:21,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 24931 transitions. [2021-05-22 01:59:21,704 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 24931 transitions. Word has length 29 [2021-05-22 01:59:21,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:21,704 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 24931 transitions. [2021-05-22 01:59:21,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:21,704 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 24931 transitions. [2021-05-22 01:59:21,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:21,713 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:21,713 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:21,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-05-22 01:59:21,713 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:21,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:21,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1492274763, now seen corresponding path program 248 times [2021-05-22 01:59:21,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:21,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757575590] [2021-05-22 01:59:21,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:21,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:21,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:21,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757575590] [2021-05-22 01:59:21,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757575590] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:21,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:21,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:21,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591676589] [2021-05-22 01:59:21,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:21,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:21,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:21,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:21,842 INFO L87 Difference]: Start difference. First operand 5251 states and 24931 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:21,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:21,942 INFO L93 Difference]: Finished difference Result 11397 states and 50766 transitions. [2021-05-22 01:59:21,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:21,942 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:21,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:21,969 INFO L225 Difference]: With dead ends: 11397 [2021-05-22 01:59:21,969 INFO L226 Difference]: Without dead ends: 10775 [2021-05-22 01:59:21,969 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:22,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10775 states. [2021-05-22 01:59:22,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10775 to 5171. [2021-05-22 01:59:22,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.754158607350097) internal successors, (24579), 5170 states have internal predecessors, (24579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:22,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24579 transitions. [2021-05-22 01:59:22,200 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24579 transitions. Word has length 29 [2021-05-22 01:59:22,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:22,200 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24579 transitions. [2021-05-22 01:59:22,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:22,200 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24579 transitions. [2021-05-22 01:59:22,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:22,209 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:22,209 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:22,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-05-22 01:59:22,209 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:22,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:22,209 INFO L82 PathProgramCache]: Analyzing trace with hash -177757847, now seen corresponding path program 249 times [2021-05-22 01:59:22,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:22,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342243946] [2021-05-22 01:59:22,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:22,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:22,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342243946] [2021-05-22 01:59:22,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342243946] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:22,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:22,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:22,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433022798] [2021-05-22 01:59:22,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:22,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:22,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:22,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:22,326 INFO L87 Difference]: Start difference. First operand 5171 states and 24579 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:22,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:22,486 INFO L93 Difference]: Finished difference Result 11095 states and 49504 transitions. [2021-05-22 01:59:22,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:22,486 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:22,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:22,512 INFO L225 Difference]: With dead ends: 11095 [2021-05-22 01:59:22,513 INFO L226 Difference]: Without dead ends: 10680 [2021-05-22 01:59:22,513 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:22,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10680 states. [2021-05-22 01:59:22,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10680 to 5203. [2021-05-22 01:59:22,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.746443675509419) internal successors, (24691), 5202 states have internal predecessors, (24691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:22,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24691 transitions. [2021-05-22 01:59:22,739 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24691 transitions. Word has length 29 [2021-05-22 01:59:22,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:22,739 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24691 transitions. [2021-05-22 01:59:22,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:22,739 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24691 transitions. [2021-05-22 01:59:22,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:22,747 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:22,747 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:22,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-05-22 01:59:22,748 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:22,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:22,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1715088455, now seen corresponding path program 250 times [2021-05-22 01:59:22,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:22,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313322214] [2021-05-22 01:59:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:22,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:22,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:22,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313322214] [2021-05-22 01:59:22,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313322214] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:22,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:22,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:22,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125894568] [2021-05-22 01:59:22,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:22,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:22,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:22,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:22,861 INFO L87 Difference]: Start difference. First operand 5203 states and 24691 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:22,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:22,962 INFO L93 Difference]: Finished difference Result 11095 states and 49472 transitions. [2021-05-22 01:59:22,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:22,962 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:22,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:22,990 INFO L225 Difference]: With dead ends: 11095 [2021-05-22 01:59:22,990 INFO L226 Difference]: Without dead ends: 10648 [2021-05-22 01:59:22,990 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:23,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10648 states. [2021-05-22 01:59:23,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10648 to 5171. [2021-05-22 01:59:23,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.751063829787234) internal successors, (24563), 5170 states have internal predecessors, (24563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:23,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24563 transitions. [2021-05-22 01:59:23,220 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24563 transitions. Word has length 29 [2021-05-22 01:59:23,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:23,220 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24563 transitions. [2021-05-22 01:59:23,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:23,221 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24563 transitions. [2021-05-22 01:59:23,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:23,230 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:23,230 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:23,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-05-22 01:59:23,230 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:23,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:23,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1858275291, now seen corresponding path program 251 times [2021-05-22 01:59:23,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:23,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923254594] [2021-05-22 01:59:23,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:23,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:23,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923254594] [2021-05-22 01:59:23,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923254594] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:23,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:23,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:23,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980885177] [2021-05-22 01:59:23,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:23,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:23,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:23,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:23,379 INFO L87 Difference]: Start difference. First operand 5171 states and 24563 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:23,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:23,513 INFO L93 Difference]: Finished difference Result 11397 states and 50766 transitions. [2021-05-22 01:59:23,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:23,513 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:23,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:23,548 INFO L225 Difference]: With dead ends: 11397 [2021-05-22 01:59:23,548 INFO L226 Difference]: Without dead ends: 10855 [2021-05-22 01:59:23,548 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 151.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:23,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10855 states. [2021-05-22 01:59:23,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10855 to 5251. [2021-05-22 01:59:23,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 4.73352380952381) internal successors, (24851), 5250 states have internal predecessors, (24851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:23,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 24851 transitions. [2021-05-22 01:59:23,821 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 24851 transitions. Word has length 29 [2021-05-22 01:59:23,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:23,821 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 24851 transitions. [2021-05-22 01:59:23,821 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:23,821 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 24851 transitions. [2021-05-22 01:59:23,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:23,829 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:23,830 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:23,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-05-22 01:59:23,830 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:23,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:23,830 INFO L82 PathProgramCache]: Analyzing trace with hash -2065083257, now seen corresponding path program 252 times [2021-05-22 01:59:23,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:23,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536184405] [2021-05-22 01:59:23,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:23,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:23,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:23,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536184405] [2021-05-22 01:59:23,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536184405] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:23,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:23,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:23,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73278993] [2021-05-22 01:59:23,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:23,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:23,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:23,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:23,974 INFO L87 Difference]: Start difference. First operand 5251 states and 24851 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:24,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:24,095 INFO L93 Difference]: Finished difference Result 11270 states and 50159 transitions. [2021-05-22 01:59:24,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:24,095 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:24,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:24,122 INFO L225 Difference]: With dead ends: 11270 [2021-05-22 01:59:24,122 INFO L226 Difference]: Without dead ends: 10743 [2021-05-22 01:59:24,122 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:24,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10743 states. [2021-05-22 01:59:24,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10743 to 5139. [2021-05-22 01:59:24,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.755741533670689) internal successors, (24435), 5138 states have internal predecessors, (24435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:24,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24435 transitions. [2021-05-22 01:59:24,350 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24435 transitions. Word has length 29 [2021-05-22 01:59:24,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:24,350 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24435 transitions. [2021-05-22 01:59:24,350 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:24,350 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24435 transitions. [2021-05-22 01:59:24,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:24,358 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:24,358 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:24,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-05-22 01:59:24,358 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:24,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:24,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1008396393, now seen corresponding path program 253 times [2021-05-22 01:59:24,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:24,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655084634] [2021-05-22 01:59:24,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:24,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:24,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:24,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655084634] [2021-05-22 01:59:24,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655084634] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:24,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:24,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:24,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894583099] [2021-05-22 01:59:24,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:24,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:24,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:24,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:24,480 INFO L87 Difference]: Start difference. First operand 5139 states and 24435 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:24,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:24,588 INFO L93 Difference]: Finished difference Result 11028 states and 49243 transitions. [2021-05-22 01:59:24,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:24,589 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:24,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:24,615 INFO L225 Difference]: With dead ends: 11028 [2021-05-22 01:59:24,615 INFO L226 Difference]: Without dead ends: 10613 [2021-05-22 01:59:24,615 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:24,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10613 states. [2021-05-22 01:59:24,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10613 to 5203. [2021-05-22 01:59:24,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.746443675509419) internal successors, (24691), 5202 states have internal predecessors, (24691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:24,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24691 transitions. [2021-05-22 01:59:24,844 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24691 transitions. Word has length 29 [2021-05-22 01:59:24,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:24,844 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24691 transitions. [2021-05-22 01:59:24,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:24,844 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24691 transitions. [2021-05-22 01:59:24,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:24,853 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:24,853 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:24,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-05-22 01:59:24,853 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:24,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:24,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1725059339, now seen corresponding path program 254 times [2021-05-22 01:59:24,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:24,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670233805] [2021-05-22 01:59:24,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:24,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:24,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:24,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670233805] [2021-05-22 01:59:24,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670233805] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:24,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:24,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:24,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638095179] [2021-05-22 01:59:24,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:24,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:24,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:24,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:24,977 INFO L87 Difference]: Start difference. First operand 5203 states and 24691 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:25,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:25,112 INFO L93 Difference]: Finished difference Result 11090 states and 49464 transitions. [2021-05-22 01:59:25,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:25,113 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:25,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:25,140 INFO L225 Difference]: With dead ends: 11090 [2021-05-22 01:59:25,140 INFO L226 Difference]: Without dead ends: 10565 [2021-05-22 01:59:25,140 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:25,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10565 states. [2021-05-22 01:59:25,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10565 to 5155. [2021-05-22 01:59:25,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.753395421032208) internal successors, (24499), 5154 states have internal predecessors, (24499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24499 transitions. [2021-05-22 01:59:25,376 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24499 transitions. Word has length 29 [2021-05-22 01:59:25,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:25,377 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24499 transitions. [2021-05-22 01:59:25,377 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:25,377 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24499 transitions. [2021-05-22 01:59:25,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:25,385 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:25,385 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:25,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-05-22 01:59:25,385 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:25,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:25,385 INFO L82 PathProgramCache]: Analyzing trace with hash 527494347, now seen corresponding path program 255 times [2021-05-22 01:59:25,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:25,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786691224] [2021-05-22 01:59:25,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:25,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:25,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:25,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786691224] [2021-05-22 01:59:25,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786691224] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:25,498 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:25,498 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:25,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458505350] [2021-05-22 01:59:25,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:25,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:25,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:25,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:25,499 INFO L87 Difference]: Start difference. First operand 5155 states and 24499 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:25,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:25,601 INFO L93 Difference]: Finished difference Result 10950 states and 48878 transitions. [2021-05-22 01:59:25,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:25,602 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:25,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:25,628 INFO L225 Difference]: With dead ends: 10950 [2021-05-22 01:59:25,628 INFO L226 Difference]: Without dead ends: 10535 [2021-05-22 01:59:25,629 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:25,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10535 states. [2021-05-22 01:59:25,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10535 to 5187. [2021-05-22 01:59:25,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.745661396066333) internal successors, (24611), 5186 states have internal predecessors, (24611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:25,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24611 transitions. [2021-05-22 01:59:25,858 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24611 transitions. Word has length 29 [2021-05-22 01:59:25,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:25,858 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24611 transitions. [2021-05-22 01:59:25,858 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:25,859 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24611 transitions. [2021-05-22 01:59:25,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:25,867 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:25,867 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:25,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-05-22 01:59:25,867 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:25,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:25,867 INFO L82 PathProgramCache]: Analyzing trace with hash 938902343, now seen corresponding path program 256 times [2021-05-22 01:59:25,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:25,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593665477] [2021-05-22 01:59:25,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:25,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:25,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593665477] [2021-05-22 01:59:25,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593665477] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:25,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:25,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:25,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120007683] [2021-05-22 01:59:25,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:25,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:25,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:25,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:25,991 INFO L87 Difference]: Start difference. First operand 5187 states and 24611 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:26,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:26,091 INFO L93 Difference]: Finished difference Result 10950 states and 48846 transitions. [2021-05-22 01:59:26,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:26,092 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:26,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:26,119 INFO L225 Difference]: With dead ends: 10950 [2021-05-22 01:59:26,119 INFO L226 Difference]: Without dead ends: 10503 [2021-05-22 01:59:26,119 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10503 states. [2021-05-22 01:59:26,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10503 to 5155. [2021-05-22 01:59:26,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.750291036088475) internal successors, (24483), 5154 states have internal predecessors, (24483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:26,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24483 transitions. [2021-05-22 01:59:26,351 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24483 transitions. Word has length 29 [2021-05-22 01:59:26,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:26,351 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24483 transitions. [2021-05-22 01:59:26,352 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:26,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24483 transitions. [2021-05-22 01:59:26,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:26,360 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:26,360 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:26,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-05-22 01:59:26,360 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:26,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:26,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1074597831, now seen corresponding path program 257 times [2021-05-22 01:59:26,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:26,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287854884] [2021-05-22 01:59:26,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:26,479 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:26,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287854884] [2021-05-22 01:59:26,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287854884] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:26,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:26,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:26,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269004981] [2021-05-22 01:59:26,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:26,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:26,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:26,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:26,480 INFO L87 Difference]: Start difference. First operand 5155 states and 24483 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:26,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:26,583 INFO L93 Difference]: Finished difference Result 11090 states and 49480 transitions. [2021-05-22 01:59:26,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:26,583 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:26,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:26,609 INFO L225 Difference]: With dead ends: 11090 [2021-05-22 01:59:26,610 INFO L226 Difference]: Without dead ends: 10613 [2021-05-22 01:59:26,610 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:26,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10613 states. [2021-05-22 01:59:26,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10613 to 5203. [2021-05-22 01:59:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.740292195309497) internal successors, (24659), 5202 states have internal predecessors, (24659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:26,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24659 transitions. [2021-05-22 01:59:26,840 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24659 transitions. Word has length 29 [2021-05-22 01:59:26,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:26,840 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24659 transitions. [2021-05-22 01:59:26,840 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:26,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24659 transitions. [2021-05-22 01:59:26,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:26,848 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:26,848 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:26,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-05-22 01:59:26,848 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:26,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:26,848 INFO L82 PathProgramCache]: Analyzing trace with hash -2139306839, now seen corresponding path program 258 times [2021-05-22 01:59:26,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:26,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90061624] [2021-05-22 01:59:26,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:26,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:26,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:26,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90061624] [2021-05-22 01:59:26,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90061624] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:26,967 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:26,967 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:26,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104025586] [2021-05-22 01:59:26,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:26,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:26,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:26,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:26,968 INFO L87 Difference]: Start difference. First operand 5203 states and 24659 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:27,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:27,061 INFO L93 Difference]: Finished difference Result 11028 states and 49163 transitions. [2021-05-22 01:59:27,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:27,061 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:27,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:27,088 INFO L225 Difference]: With dead ends: 11028 [2021-05-22 01:59:27,088 INFO L226 Difference]: Without dead ends: 10549 [2021-05-22 01:59:27,089 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:27,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10549 states. [2021-05-22 01:59:27,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10549 to 5139. [2021-05-22 01:59:27,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.7541845075905025) internal successors, (24427), 5138 states have internal predecessors, (24427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:27,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24427 transitions. [2021-05-22 01:59:27,323 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24427 transitions. Word has length 29 [2021-05-22 01:59:27,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:27,323 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24427 transitions. [2021-05-22 01:59:27,323 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:27,323 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24427 transitions. [2021-05-22 01:59:27,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:27,332 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:27,332 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:27,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-05-22 01:59:27,332 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:27,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:27,332 INFO L82 PathProgramCache]: Analyzing trace with hash -612414427, now seen corresponding path program 259 times [2021-05-22 01:59:27,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:27,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911812446] [2021-05-22 01:59:27,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:27,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:27,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911812446] [2021-05-22 01:59:27,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911812446] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:27,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:27,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:27,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10109830] [2021-05-22 01:59:27,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:27,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:27,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:27,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:27,446 INFO L87 Difference]: Start difference. First operand 5139 states and 24427 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:27,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:27,539 INFO L93 Difference]: Finished difference Result 11687 states and 52040 transitions. [2021-05-22 01:59:27,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:27,540 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:27,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:27,569 INFO L225 Difference]: With dead ends: 11687 [2021-05-22 01:59:27,569 INFO L226 Difference]: Without dead ends: 11145 [2021-05-22 01:59:27,569 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:27,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11145 states. [2021-05-22 01:59:27,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11145 to 5338. [2021-05-22 01:59:27,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5337 states have (on average 4.724376990818812) internal successors, (25214), 5337 states have internal predecessors, (25214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:27,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 25214 transitions. [2021-05-22 01:59:27,810 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 25214 transitions. Word has length 29 [2021-05-22 01:59:27,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:27,810 INFO L482 AbstractCegarLoop]: Abstraction has 5338 states and 25214 transitions. [2021-05-22 01:59:27,810 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:27,810 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 25214 transitions. [2021-05-22 01:59:27,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:27,818 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:27,819 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:27,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-05-22 01:59:27,819 INFO L430 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:27,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:27,819 INFO L82 PathProgramCache]: Analyzing trace with hash 468648199, now seen corresponding path program 260 times [2021-05-22 01:59:27,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:27,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634676047] [2021-05-22 01:59:27,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:27,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:27,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:27,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634676047] [2021-05-22 01:59:27,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634676047] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:27,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:27,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:27,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596051954] [2021-05-22 01:59:27,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:27,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:27,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:27,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:27,932 INFO L87 Difference]: Start difference. First operand 5338 states and 25214 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:28,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:28,039 INFO L93 Difference]: Finished difference Result 11622 states and 51671 transitions. [2021-05-22 01:59:28,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:28,039 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:28,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:28,067 INFO L225 Difference]: With dead ends: 11622 [2021-05-22 01:59:28,067 INFO L226 Difference]: Without dead ends: 11002 [2021-05-22 01:59:28,067 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:28,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11002 states. [2021-05-22 01:59:28,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11002 to 5195. [2021-05-22 01:59:28,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.74374278013092) internal successors, (24639), 5194 states have internal predecessors, (24639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:28,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24639 transitions. [2021-05-22 01:59:28,295 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24639 transitions. Word has length 29 [2021-05-22 01:59:28,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:28,295 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24639 transitions. [2021-05-22 01:59:28,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:28,296 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24639 transitions. [2021-05-22 01:59:28,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:28,304 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:28,304 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:28,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-05-22 01:59:28,304 INFO L430 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:28,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:28,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1093316473, now seen corresponding path program 261 times [2021-05-22 01:59:28,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:28,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869628226] [2021-05-22 01:59:28,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:28,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:28,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:28,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869628226] [2021-05-22 01:59:28,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869628226] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:28,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:28,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:28,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808959849] [2021-05-22 01:59:28,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:28,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:28,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:28,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:28,420 INFO L87 Difference]: Start difference. First operand 5195 states and 24639 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:28,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:28,509 INFO L93 Difference]: Finished difference Result 11562 states and 51453 transitions. [2021-05-22 01:59:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:28,509 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:28,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:28,536 INFO L225 Difference]: With dead ends: 11562 [2021-05-22 01:59:28,537 INFO L226 Difference]: Without dead ends: 11020 [2021-05-22 01:59:28,537 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:28,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11020 states. [2021-05-22 01:59:28,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11020 to 5275. [2021-05-22 01:59:28,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5275 states, 5274 states have (on average 4.726393629124004) internal successors, (24927), 5274 states have internal predecessors, (24927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:28,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 24927 transitions. [2021-05-22 01:59:28,770 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 24927 transitions. Word has length 29 [2021-05-22 01:59:28,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:28,770 INFO L482 AbstractCegarLoop]: Abstraction has 5275 states and 24927 transitions. [2021-05-22 01:59:28,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:28,770 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 24927 transitions. [2021-05-22 01:59:28,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:28,779 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:28,779 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:28,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-05-22 01:59:28,779 INFO L430 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:28,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:28,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1513404551, now seen corresponding path program 262 times [2021-05-22 01:59:28,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:28,780 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9176640] [2021-05-22 01:59:28,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:28,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:28,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9176640] [2021-05-22 01:59:28,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9176640] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:28,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:28,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:28,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776695280] [2021-05-22 01:59:28,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:28,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:28,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:28,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:28,897 INFO L87 Difference]: Start difference. First operand 5275 states and 24927 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:28,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:28,990 INFO L93 Difference]: Finished difference Result 11435 states and 50846 transitions. [2021-05-22 01:59:28,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:28,990 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:28,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:29,018 INFO L225 Difference]: With dead ends: 11435 [2021-05-22 01:59:29,018 INFO L226 Difference]: Without dead ends: 10940 [2021-05-22 01:59:29,019 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:29,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10940 states. [2021-05-22 01:59:29,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10940 to 5195. [2021-05-22 01:59:29,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.736041586445899) internal successors, (24599), 5194 states have internal predecessors, (24599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:29,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24599 transitions. [2021-05-22 01:59:29,252 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24599 transitions. Word has length 29 [2021-05-22 01:59:29,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:29,253 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24599 transitions. [2021-05-22 01:59:29,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:29,253 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24599 transitions. [2021-05-22 01:59:29,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:29,261 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:29,261 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:29,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-05-22 01:59:29,261 INFO L430 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:29,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:29,261 INFO L82 PathProgramCache]: Analyzing trace with hash -705311511, now seen corresponding path program 263 times [2021-05-22 01:59:29,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:29,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958693205] [2021-05-22 01:59:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:29,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:29,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958693205] [2021-05-22 01:59:29,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958693205] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:29,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:29,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:29,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099642480] [2021-05-22 01:59:29,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:29,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:29,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:29,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:29,378 INFO L87 Difference]: Start difference. First operand 5195 states and 24599 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:29,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:29,491 INFO L93 Difference]: Finished difference Result 11400 states and 50753 transitions. [2021-05-22 01:59:29,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:29,491 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:29,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:29,518 INFO L225 Difference]: With dead ends: 11400 [2021-05-22 01:59:29,518 INFO L226 Difference]: Without dead ends: 10923 [2021-05-22 01:59:29,518 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:29,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10923 states. [2021-05-22 01:59:29,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10923 to 5243. [2021-05-22 01:59:29,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 5242 states have (on average 4.726249523082793) internal successors, (24775), 5242 states have internal predecessors, (24775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 24775 transitions. [2021-05-22 01:59:29,745 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 24775 transitions. Word has length 29 [2021-05-22 01:59:29,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:29,745 INFO L482 AbstractCegarLoop]: Abstraction has 5243 states and 24775 transitions. [2021-05-22 01:59:29,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 24775 transitions. [2021-05-22 01:59:29,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:29,753 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:29,753 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:29,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-05-22 01:59:29,753 INFO L430 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:29,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:29,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1552108473, now seen corresponding path program 264 times [2021-05-22 01:59:29,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:29,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399286271] [2021-05-22 01:59:29,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:29,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:29,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399286271] [2021-05-22 01:59:29,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399286271] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:29,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:29,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:29,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475686705] [2021-05-22 01:59:29,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:29,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:29,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:29,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:29,870 INFO L87 Difference]: Start difference. First operand 5243 states and 24775 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:29,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:29,966 INFO L93 Difference]: Finished difference Result 11338 states and 50436 transitions. [2021-05-22 01:59:29,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:29,966 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:29,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:29,993 INFO L225 Difference]: With dead ends: 11338 [2021-05-22 01:59:29,993 INFO L226 Difference]: Without dead ends: 10795 [2021-05-22 01:59:29,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:30,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10795 states. [2021-05-22 01:59:30,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10795 to 5115. [2021-05-22 01:59:30,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 4.759288228392648) internal successors, (24339), 5114 states have internal predecessors, (24339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:30,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 24339 transitions. [2021-05-22 01:59:30,218 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 24339 transitions. Word has length 29 [2021-05-22 01:59:30,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:30,218 INFO L482 AbstractCegarLoop]: Abstraction has 5115 states and 24339 transitions. [2021-05-22 01:59:30,218 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:30,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 24339 transitions. [2021-05-22 01:59:30,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:30,226 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:30,226 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:30,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-05-22 01:59:30,226 INFO L430 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:30,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:30,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1183232459, now seen corresponding path program 265 times [2021-05-22 01:59:30,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:30,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388493949] [2021-05-22 01:59:30,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:30,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:30,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388493949] [2021-05-22 01:59:30,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388493949] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:30,342 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:30,342 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:30,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897510928] [2021-05-22 01:59:30,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:30,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:30,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:30,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:30,342 INFO L87 Difference]: Start difference. First operand 5115 states and 24339 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:30,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:30,453 INFO L93 Difference]: Finished difference Result 11597 states and 51819 transitions. [2021-05-22 01:59:30,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:30,454 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:30,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:30,482 INFO L225 Difference]: With dead ends: 11597 [2021-05-22 01:59:30,482 INFO L226 Difference]: Without dead ends: 11182 [2021-05-22 01:59:30,483 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:30,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11182 states. [2021-05-22 01:59:30,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11182 to 5279. [2021-05-22 01:59:30,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5279 states, 5278 states have (on average 4.750852595680182) internal successors, (25075), 5278 states have internal predecessors, (25075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:30,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5279 states to 5279 states and 25075 transitions. [2021-05-22 01:59:30,717 INFO L78 Accepts]: Start accepts. Automaton has 5279 states and 25075 transitions. Word has length 29 [2021-05-22 01:59:30,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:30,717 INFO L482 AbstractCegarLoop]: Abstraction has 5279 states and 25075 transitions. [2021-05-22 01:59:30,717 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:30,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5279 states and 25075 transitions. [2021-05-22 01:59:30,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:30,726 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:30,726 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:30,726 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-05-22 01:59:30,726 INFO L430 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:30,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:30,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1356914229, now seen corresponding path program 266 times [2021-05-22 01:59:30,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:30,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654350423] [2021-05-22 01:59:30,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:30,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:30,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:30,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654350423] [2021-05-22 01:59:30,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654350423] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:30,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:30,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:30,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599647871] [2021-05-22 01:59:30,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:30,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:30,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:30,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:30,843 INFO L87 Difference]: Start difference. First operand 5279 states and 25075 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:30,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:30,939 INFO L93 Difference]: Finished difference Result 11724 states and 52298 transitions. [2021-05-22 01:59:30,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:30,939 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:30,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:30,967 INFO L225 Difference]: With dead ends: 11724 [2021-05-22 01:59:30,967 INFO L226 Difference]: Without dead ends: 11102 [2021-05-22 01:59:30,967 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:31,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11102 states. [2021-05-22 01:59:31,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11102 to 5199. [2021-05-22 01:59:31,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 4.754713351288958) internal successors, (24715), 5198 states have internal predecessors, (24715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:31,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 24715 transitions. [2021-05-22 01:59:31,196 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 24715 transitions. Word has length 29 [2021-05-22 01:59:31,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:31,196 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 24715 transitions. [2021-05-22 01:59:31,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:31,196 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 24715 transitions. [2021-05-22 01:59:31,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:31,204 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:31,205 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:31,205 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-05-22 01:59:31,205 INFO L430 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:31,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:31,205 INFO L82 PathProgramCache]: Analyzing trace with hash 963430603, now seen corresponding path program 267 times [2021-05-22 01:59:31,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:31,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531815151] [2021-05-22 01:59:31,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:31,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:31,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531815151] [2021-05-22 01:59:31,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531815151] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:31,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:31,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:31,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211151452] [2021-05-22 01:59:31,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:31,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:31,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:31,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:31,321 INFO L87 Difference]: Start difference. First operand 5199 states and 24715 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:31,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:31,427 INFO L93 Difference]: Finished difference Result 11500 states and 51377 transitions. [2021-05-22 01:59:31,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:31,428 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:31,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:31,455 INFO L225 Difference]: With dead ends: 11500 [2021-05-22 01:59:31,455 INFO L226 Difference]: Without dead ends: 11085 [2021-05-22 01:59:31,455 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:31,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11085 states. [2021-05-22 01:59:31,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11085 to 5247. [2021-05-22 01:59:31,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 5246 states have (on average 4.744757910789173) internal successors, (24891), 5246 states have internal predecessors, (24891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:31,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 24891 transitions. [2021-05-22 01:59:31,688 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 24891 transitions. Word has length 29 [2021-05-22 01:59:31,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:31,688 INFO L482 AbstractCegarLoop]: Abstraction has 5247 states and 24891 transitions. [2021-05-22 01:59:31,688 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:31,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 24891 transitions. [2021-05-22 01:59:31,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:31,696 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:31,696 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:31,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-05-22 01:59:31,697 INFO L430 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:31,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:31,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1680093549, now seen corresponding path program 268 times [2021-05-22 01:59:31,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:31,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969951971] [2021-05-22 01:59:31,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:31,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:31,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:31,811 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969951971] [2021-05-22 01:59:31,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969951971] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:31,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:31,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:31,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440813623] [2021-05-22 01:59:31,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:31,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:31,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:31,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:31,812 INFO L87 Difference]: Start difference. First operand 5247 states and 24891 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:31,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:31,918 INFO L93 Difference]: Finished difference Result 11562 states and 51598 transitions. [2021-05-22 01:59:31,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:31,918 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:31,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:31,945 INFO L225 Difference]: With dead ends: 11562 [2021-05-22 01:59:31,945 INFO L226 Difference]: Without dead ends: 11037 [2021-05-22 01:59:31,945 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:32,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11037 states. [2021-05-22 01:59:32,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11037 to 5199. [2021-05-22 01:59:32,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 4.750096190842632) internal successors, (24691), 5198 states have internal predecessors, (24691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:32,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 24691 transitions. [2021-05-22 01:59:32,176 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 24691 transitions. Word has length 29 [2021-05-22 01:59:32,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:32,176 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 24691 transitions. [2021-05-22 01:59:32,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:32,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 24691 transitions. [2021-05-22 01:59:32,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:32,184 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:32,184 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:32,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-05-22 01:59:32,184 INFO L430 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:32,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:32,185 INFO L82 PathProgramCache]: Analyzing trace with hash -531648147, now seen corresponding path program 269 times [2021-05-22 01:59:32,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:32,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709384964] [2021-05-22 01:59:32,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:32,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:32,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:32,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709384964] [2021-05-22 01:59:32,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709384964] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:32,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:32,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:32,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623201599] [2021-05-22 01:59:32,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:32,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:32,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:32,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:32,294 INFO L87 Difference]: Start difference. First operand 5199 states and 24691 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:32,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:32,415 INFO L93 Difference]: Finished difference Result 11849 states and 52813 transitions. [2021-05-22 01:59:32,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:32,415 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:32,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:32,443 INFO L225 Difference]: With dead ends: 11849 [2021-05-22 01:59:32,443 INFO L226 Difference]: Without dead ends: 11307 [2021-05-22 01:59:32,443 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:32,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11307 states. [2021-05-22 01:59:32,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11307 to 5342. [2021-05-22 01:59:32,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5342 states, 5341 states have (on average 4.7200898708107095) internal successors, (25210), 5341 states have internal predecessors, (25210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:32,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 25210 transitions. [2021-05-22 01:59:32,710 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 25210 transitions. Word has length 29 [2021-05-22 01:59:32,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:32,711 INFO L482 AbstractCegarLoop]: Abstraction has 5342 states and 25210 transitions. [2021-05-22 01:59:32,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:32,711 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 25210 transitions. [2021-05-22 01:59:32,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:32,719 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:32,719 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:32,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-05-22 01:59:32,719 INFO L430 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:32,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:32,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1719982155, now seen corresponding path program 270 times [2021-05-22 01:59:32,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:32,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701473618] [2021-05-22 01:59:32,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:32,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:32,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:32,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701473618] [2021-05-22 01:59:32,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701473618] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:32,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:32,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:32,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829957555] [2021-05-22 01:59:32,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:32,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:32,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:32,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:32,851 INFO L87 Difference]: Start difference. First operand 5342 states and 25210 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:32,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:32,955 INFO L93 Difference]: Finished difference Result 11784 states and 52444 transitions. [2021-05-22 01:59:32,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:32,956 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:32,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:32,983 INFO L225 Difference]: With dead ends: 11784 [2021-05-22 01:59:32,983 INFO L226 Difference]: Without dead ends: 11108 [2021-05-22 01:59:32,983 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:33,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11108 states. [2021-05-22 01:59:33,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11108 to 5143. [2021-05-22 01:59:33,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.756709451575262) internal successors, (24459), 5142 states have internal predecessors, (24459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:33,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24459 transitions. [2021-05-22 01:59:33,212 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24459 transitions. Word has length 29 [2021-05-22 01:59:33,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:33,212 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24459 transitions. [2021-05-22 01:59:33,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:33,213 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24459 transitions. [2021-05-22 01:59:33,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:33,221 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:33,221 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:33,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-05-22 01:59:33,221 INFO L430 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:33,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:33,221 INFO L82 PathProgramCache]: Analyzing trace with hash 2057954541, now seen corresponding path program 271 times [2021-05-22 01:59:33,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:33,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240399867] [2021-05-22 01:59:33,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:33,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:33,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240399867] [2021-05-22 01:59:33,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240399867] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:33,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:33,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:33,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878172097] [2021-05-22 01:59:33,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:33,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:33,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:33,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:33,334 INFO L87 Difference]: Start difference. First operand 5143 states and 24459 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:33,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:33,449 INFO L93 Difference]: Finished difference Result 11540 states and 51588 transitions. [2021-05-22 01:59:33,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:33,449 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:33,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:33,479 INFO L225 Difference]: With dead ends: 11540 [2021-05-22 01:59:33,479 INFO L226 Difference]: Without dead ends: 11125 [2021-05-22 01:59:33,479 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:33,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11125 states. [2021-05-22 01:59:33,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11125 to 5263. [2021-05-22 01:59:33,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5262 states have (on average 4.747814519194223) internal successors, (24983), 5262 states have internal predecessors, (24983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:33,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 24983 transitions. [2021-05-22 01:59:33,746 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 24983 transitions. Word has length 29 [2021-05-22 01:59:33,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:33,746 INFO L482 AbstractCegarLoop]: Abstraction has 5263 states and 24983 transitions. [2021-05-22 01:59:33,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:33,747 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 24983 transitions. [2021-05-22 01:59:33,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:33,755 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:33,755 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:33,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-05-22 01:59:33,755 INFO L430 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:33,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:33,756 INFO L82 PathProgramCache]: Analyzing trace with hash -482192147, now seen corresponding path program 272 times [2021-05-22 01:59:33,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:33,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021659165] [2021-05-22 01:59:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:33,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:33,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:33,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021659165] [2021-05-22 01:59:33,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021659165] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:33,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:33,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:33,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828722604] [2021-05-22 01:59:33,869 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:33,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:33,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:33,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:33,869 INFO L87 Difference]: Start difference. First operand 5263 states and 24983 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:33,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:33,965 INFO L93 Difference]: Finished difference Result 11667 states and 52067 transitions. [2021-05-22 01:59:33,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:33,965 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:33,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:33,993 INFO L225 Difference]: With dead ends: 11667 [2021-05-22 01:59:33,993 INFO L226 Difference]: Without dead ends: 11045 [2021-05-22 01:59:33,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:34,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11045 states. [2021-05-22 01:59:34,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11045 to 5183. [2021-05-22 01:59:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5183 states, 5182 states have (on average 4.7516402933230415) internal successors, (24623), 5182 states have internal predecessors, (24623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:34,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5183 states to 5183 states and 24623 transitions. [2021-05-22 01:59:34,223 INFO L78 Accepts]: Start accepts. Automaton has 5183 states and 24623 transitions. Word has length 29 [2021-05-22 01:59:34,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:34,223 INFO L482 AbstractCegarLoop]: Abstraction has 5183 states and 24623 transitions. [2021-05-22 01:59:34,223 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:34,223 INFO L276 IsEmpty]: Start isEmpty. Operand 5183 states and 24623 transitions. [2021-05-22 01:59:34,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:34,231 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:34,231 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:34,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-05-22 01:59:34,232 INFO L430 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:34,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:34,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1801840373, now seen corresponding path program 273 times [2021-05-22 01:59:34,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:34,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601970825] [2021-05-22 01:59:34,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:34,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:34,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:34,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601970825] [2021-05-22 01:59:34,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601970825] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:34,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:34,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:34,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300609382] [2021-05-22 01:59:34,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:34,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:34,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:34,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:34,331 INFO L87 Difference]: Start difference. First operand 5183 states and 24623 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:34,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:34,447 INFO L93 Difference]: Finished difference Result 11437 states and 51129 transitions. [2021-05-22 01:59:34,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:34,447 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:34,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:34,474 INFO L225 Difference]: With dead ends: 11437 [2021-05-22 01:59:34,474 INFO L226 Difference]: Without dead ends: 11022 [2021-05-22 01:59:34,475 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:34,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11022 states. [2021-05-22 01:59:34,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11022 to 5231. [2021-05-22 01:59:34,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5231 states, 5230 states have (on average 4.7416826003824095) internal successors, (24799), 5230 states have internal predecessors, (24799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:34,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5231 states to 5231 states and 24799 transitions. [2021-05-22 01:59:34,707 INFO L78 Accepts]: Start accepts. Automaton has 5231 states and 24799 transitions. Word has length 29 [2021-05-22 01:59:34,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:34,707 INFO L482 AbstractCegarLoop]: Abstraction has 5231 states and 24799 transitions. [2021-05-22 01:59:34,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:34,707 INFO L276 IsEmpty]: Start isEmpty. Operand 5231 states and 24799 transitions. [2021-05-22 01:59:34,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:34,716 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:34,716 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:34,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-05-22 01:59:34,716 INFO L430 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:34,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:34,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1362774061, now seen corresponding path program 274 times [2021-05-22 01:59:34,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:34,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487184843] [2021-05-22 01:59:34,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:34,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:34,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:34,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487184843] [2021-05-22 01:59:34,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487184843] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:34,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:34,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:34,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917868620] [2021-05-22 01:59:34,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:34,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:34,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:34,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:34,817 INFO L87 Difference]: Start difference. First operand 5231 states and 24799 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:34,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:34,926 INFO L93 Difference]: Finished difference Result 11493 states and 51333 transitions. [2021-05-22 01:59:34,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:34,926 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:34,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:34,954 INFO L225 Difference]: With dead ends: 11493 [2021-05-22 01:59:34,954 INFO L226 Difference]: Without dead ends: 10974 [2021-05-22 01:59:34,954 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:35,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10974 states. [2021-05-22 01:59:35,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10974 to 5183. [2021-05-22 01:59:35,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5183 states, 5182 states have (on average 4.747008876881513) internal successors, (24599), 5182 states have internal predecessors, (24599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:35,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5183 states to 5183 states and 24599 transitions. [2021-05-22 01:59:35,182 INFO L78 Accepts]: Start accepts. Automaton has 5183 states and 24599 transitions. Word has length 29 [2021-05-22 01:59:35,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:35,182 INFO L482 AbstractCegarLoop]: Abstraction has 5183 states and 24599 transitions. [2021-05-22 01:59:35,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:35,182 INFO L276 IsEmpty]: Start isEmpty. Operand 5183 states and 24599 transitions. [2021-05-22 01:59:35,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:35,191 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:35,191 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:35,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-05-22 01:59:35,191 INFO L430 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:35,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:35,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1429403693, now seen corresponding path program 275 times [2021-05-22 01:59:35,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:35,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694886733] [2021-05-22 01:59:35,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:35,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:35,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:35,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694886733] [2021-05-22 01:59:35,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694886733] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:35,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:35,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:35,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139917544] [2021-05-22 01:59:35,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:35,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:35,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:35,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:35,302 INFO L87 Difference]: Start difference. First operand 5183 states and 24599 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:35,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:35,396 INFO L93 Difference]: Finished difference Result 11751 states and 52443 transitions. [2021-05-22 01:59:35,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:35,396 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:35,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:35,425 INFO L225 Difference]: With dead ends: 11751 [2021-05-22 01:59:35,426 INFO L226 Difference]: Without dead ends: 11209 [2021-05-22 01:59:35,426 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:35,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11209 states. [2021-05-22 01:59:35,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11209 to 5291. [2021-05-22 01:59:35,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5291 states, 5290 states have (on average 4.725708884688091) internal successors, (24999), 5290 states have internal predecessors, (24999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:35,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5291 states to 5291 states and 24999 transitions. [2021-05-22 01:59:35,667 INFO L78 Accepts]: Start accepts. Automaton has 5291 states and 24999 transitions. Word has length 29 [2021-05-22 01:59:35,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:35,667 INFO L482 AbstractCegarLoop]: Abstraction has 5291 states and 24999 transitions. [2021-05-22 01:59:35,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:35,667 INFO L276 IsEmpty]: Start isEmpty. Operand 5291 states and 24999 transitions. [2021-05-22 01:59:35,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:35,676 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:35,676 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:35,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-05-22 01:59:35,677 INFO L430 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:35,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:35,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1339644043, now seen corresponding path program 276 times [2021-05-22 01:59:35,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:35,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731365203] [2021-05-22 01:59:35,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:35,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:35,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731365203] [2021-05-22 01:59:35,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731365203] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:35,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:35,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:35,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926508188] [2021-05-22 01:59:35,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:35,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:35,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:35,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:35,788 INFO L87 Difference]: Start difference. First operand 5291 states and 24999 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:35,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:35,912 INFO L93 Difference]: Finished difference Result 11680 states and 52060 transitions. [2021-05-22 01:59:35,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:35,912 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:35,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:35,940 INFO L225 Difference]: With dead ends: 11680 [2021-05-22 01:59:35,940 INFO L226 Difference]: Without dead ends: 11061 [2021-05-22 01:59:35,940 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:36,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11061 states. [2021-05-22 01:59:36,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11061 to 5143. [2021-05-22 01:59:36,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.752819914430183) internal successors, (24439), 5142 states have internal predecessors, (24439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:36,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24439 transitions. [2021-05-22 01:59:36,175 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24439 transitions. Word has length 29 [2021-05-22 01:59:36,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:36,175 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24439 transitions. [2021-05-22 01:59:36,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:36,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24439 transitions. [2021-05-22 01:59:36,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:36,184 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:36,184 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:36,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-05-22 01:59:36,184 INFO L430 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:36,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:36,184 INFO L82 PathProgramCache]: Analyzing trace with hash -985972725, now seen corresponding path program 277 times [2021-05-22 01:59:36,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:36,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502940794] [2021-05-22 01:59:36,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:36,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:36,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:36,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502940794] [2021-05-22 01:59:36,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502940794] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:36,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:36,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:36,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893617196] [2021-05-22 01:59:36,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:36,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:36,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:36,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:36,289 INFO L87 Difference]: Start difference. First operand 5143 states and 24439 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:36,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:36,401 INFO L93 Difference]: Finished difference Result 11298 states and 50540 transitions. [2021-05-22 01:59:36,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:36,401 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:36,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:36,429 INFO L225 Difference]: With dead ends: 11298 [2021-05-22 01:59:36,429 INFO L226 Difference]: Without dead ends: 10883 [2021-05-22 01:59:36,429 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:36,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10883 states. [2021-05-22 01:59:36,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10883 to 5215. [2021-05-22 01:59:36,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5214 states have (on average 4.744725738396625) internal successors, (24739), 5214 states have internal predecessors, (24739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:36,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 24739 transitions. [2021-05-22 01:59:36,662 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 24739 transitions. Word has length 29 [2021-05-22 01:59:36,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:36,662 INFO L482 AbstractCegarLoop]: Abstraction has 5215 states and 24739 transitions. [2021-05-22 01:59:36,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:36,662 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 24739 transitions. [2021-05-22 01:59:36,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:36,671 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:36,671 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:36,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-05-22 01:59:36,671 INFO L430 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:36,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:36,671 INFO L82 PathProgramCache]: Analyzing trace with hash -269309779, now seen corresponding path program 278 times [2021-05-22 01:59:36,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:36,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705839712] [2021-05-22 01:59:36,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:36,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:36,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:36,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705839712] [2021-05-22 01:59:36,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705839712] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:36,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:36,775 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:36,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751067719] [2021-05-22 01:59:36,775 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:36,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:36,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:36,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:36,775 INFO L87 Difference]: Start difference. First operand 5215 states and 24739 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:36,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:36,900 INFO L93 Difference]: Finished difference Result 11360 states and 50761 transitions. [2021-05-22 01:59:36,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:36,900 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:36,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:36,929 INFO L225 Difference]: With dead ends: 11360 [2021-05-22 01:59:36,929 INFO L226 Difference]: Without dead ends: 10835 [2021-05-22 01:59:36,929 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:37,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10835 states. [2021-05-22 01:59:37,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10835 to 5167. [2021-05-22 01:59:37,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.750096786682152) internal successors, (24539), 5166 states have internal predecessors, (24539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:37,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24539 transitions. [2021-05-22 01:59:37,163 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24539 transitions. Word has length 29 [2021-05-22 01:59:37,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:37,164 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24539 transitions. [2021-05-22 01:59:37,164 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:37,164 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24539 transitions. [2021-05-22 01:59:37,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:37,172 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:37,172 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:37,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-05-22 01:59:37,172 INFO L430 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:37,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:37,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1441977197, now seen corresponding path program 279 times [2021-05-22 01:59:37,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:37,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507030491] [2021-05-22 01:59:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:37,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:37,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:37,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507030491] [2021-05-22 01:59:37,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507030491] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:37,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:37,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:37,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431809075] [2021-05-22 01:59:37,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:37,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:37,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:37,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:37,276 INFO L87 Difference]: Start difference. First operand 5167 states and 24539 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:37,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:37,381 INFO L93 Difference]: Finished difference Result 11292 states and 50499 transitions. [2021-05-22 01:59:37,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:37,381 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:37,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:37,409 INFO L225 Difference]: With dead ends: 11292 [2021-05-22 01:59:37,409 INFO L226 Difference]: Without dead ends: 10877 [2021-05-22 01:59:37,409 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:37,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10877 states. [2021-05-22 01:59:37,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10877 to 5215. [2021-05-22 01:59:37,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5214 states have (on average 4.740122746451861) internal successors, (24715), 5214 states have internal predecessors, (24715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:37,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 24715 transitions. [2021-05-22 01:59:37,646 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 24715 transitions. Word has length 29 [2021-05-22 01:59:37,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:37,646 INFO L482 AbstractCegarLoop]: Abstraction has 5215 states and 24715 transitions. [2021-05-22 01:59:37,646 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:37,646 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 24715 transitions. [2021-05-22 01:59:37,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:37,654 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:37,655 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:37,655 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-05-22 01:59:37,655 INFO L430 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:37,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:37,655 INFO L82 PathProgramCache]: Analyzing trace with hash 586587949, now seen corresponding path program 280 times [2021-05-22 01:59:37,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:37,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605979801] [2021-05-22 01:59:37,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:37,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:37,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:37,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605979801] [2021-05-22 01:59:37,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605979801] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:37,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:37,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:37,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350426019] [2021-05-22 01:59:37,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:37,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:37,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:37,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:37,747 INFO L87 Difference]: Start difference. First operand 5215 states and 24715 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:37,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:37,853 INFO L93 Difference]: Finished difference Result 11348 states and 50703 transitions. [2021-05-22 01:59:37,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:37,854 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:37,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:37,881 INFO L225 Difference]: With dead ends: 11348 [2021-05-22 01:59:37,882 INFO L226 Difference]: Without dead ends: 10829 [2021-05-22 01:59:37,882 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:37,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10829 states. [2021-05-22 01:59:38,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10829 to 5167. [2021-05-22 01:59:38,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.745451025938831) internal successors, (24515), 5166 states have internal predecessors, (24515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:38,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24515 transitions. [2021-05-22 01:59:38,116 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24515 transitions. Word has length 29 [2021-05-22 01:59:38,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:38,116 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24515 transitions. [2021-05-22 01:59:38,116 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:38,116 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24515 transitions. [2021-05-22 01:59:38,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:38,124 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:38,125 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:38,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-05-22 01:59:38,125 INFO L430 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:38,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:38,125 INFO L82 PathProgramCache]: Analyzing trace with hash 88315727, now seen corresponding path program 281 times [2021-05-22 01:59:38,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:38,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699089368] [2021-05-22 01:59:38,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:38,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:38,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699089368] [2021-05-22 01:59:38,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699089368] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:38,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:38,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:38,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679512451] [2021-05-22 01:59:38,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:38,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:38,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:38,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:38,221 INFO L87 Difference]: Start difference. First operand 5167 states and 24515 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:38,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:38,324 INFO L93 Difference]: Finished difference Result 11444 states and 51153 transitions. [2021-05-22 01:59:38,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:38,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:38,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:38,352 INFO L225 Difference]: With dead ends: 11444 [2021-05-22 01:59:38,352 INFO L226 Difference]: Without dead ends: 10967 [2021-05-22 01:59:38,352 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:38,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10967 states. [2021-05-22 01:59:38,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10967 to 5243. [2021-05-22 01:59:38,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 5242 states have (on average 4.731590995803129) internal successors, (24803), 5242 states have internal predecessors, (24803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:38,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 24803 transitions. [2021-05-22 01:59:38,585 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 24803 transitions. Word has length 29 [2021-05-22 01:59:38,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:38,585 INFO L482 AbstractCegarLoop]: Abstraction has 5243 states and 24803 transitions. [2021-05-22 01:59:38,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:38,585 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 24803 transitions. [2021-05-22 01:59:38,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:38,594 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:38,594 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:38,594 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-05-22 01:59:38,594 INFO L430 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:38,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:38,595 INFO L82 PathProgramCache]: Analyzing trace with hash -652636371, now seen corresponding path program 282 times [2021-05-22 01:59:38,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:38,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996063478] [2021-05-22 01:59:38,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:38,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:38,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:38,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996063478] [2021-05-22 01:59:38,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996063478] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:38,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:38,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:38,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125843939] [2021-05-22 01:59:38,693 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:38,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:38,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:38,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:38,694 INFO L87 Difference]: Start difference. First operand 5243 states and 24803 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:38,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:38,801 INFO L93 Difference]: Finished difference Result 11438 states and 51060 transitions. [2021-05-22 01:59:38,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:38,801 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:38,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:38,829 INFO L225 Difference]: With dead ends: 11438 [2021-05-22 01:59:38,829 INFO L226 Difference]: Without dead ends: 10867 [2021-05-22 01:59:38,829 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:38,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10867 states. [2021-05-22 01:59:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10867 to 5143. [2021-05-22 01:59:39,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.750486192143135) internal successors, (24427), 5142 states have internal predecessors, (24427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:39,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24427 transitions. [2021-05-22 01:59:39,061 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24427 transitions. Word has length 29 [2021-05-22 01:59:39,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:39,062 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24427 transitions. [2021-05-22 01:59:39,062 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:39,062 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24427 transitions. [2021-05-22 01:59:39,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:39,070 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:39,070 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:39,070 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-05-22 01:59:39,070 INFO L430 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:39,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:39,070 INFO L82 PathProgramCache]: Analyzing trace with hash -977316017, now seen corresponding path program 283 times [2021-05-22 01:59:39,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:39,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320893426] [2021-05-22 01:59:39,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:39,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:39,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:39,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320893426] [2021-05-22 01:59:39,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320893426] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:39,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:39,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:39,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575381417] [2021-05-22 01:59:39,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:39,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:39,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:39,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:39,166 INFO L87 Difference]: Start difference. First operand 5143 states and 24427 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:39,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:39,261 INFO L93 Difference]: Finished difference Result 11975 states and 53426 transitions. [2021-05-22 01:59:39,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:39,261 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:39,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:39,290 INFO L225 Difference]: With dead ends: 11975 [2021-05-22 01:59:39,290 INFO L226 Difference]: Without dead ends: 11433 [2021-05-22 01:59:39,290 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 100.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:39,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11433 states. [2021-05-22 01:59:39,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11433 to 5356. [2021-05-22 01:59:39,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5356 states, 5355 states have (on average 4.722875816993464) internal successors, (25291), 5355 states have internal predecessors, (25291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:39,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5356 states to 5356 states and 25291 transitions. [2021-05-22 01:59:39,527 INFO L78 Accepts]: Start accepts. Automaton has 5356 states and 25291 transitions. Word has length 29 [2021-05-22 01:59:39,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:39,528 INFO L482 AbstractCegarLoop]: Abstraction has 5356 states and 25291 transitions. [2021-05-22 01:59:39,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:39,528 INFO L276 IsEmpty]: Start isEmpty. Operand 5356 states and 25291 transitions. [2021-05-22 01:59:39,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:39,536 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:39,536 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:39,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-05-22 01:59:39,536 INFO L430 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:39,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:39,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1274314285, now seen corresponding path program 284 times [2021-05-22 01:59:39,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:39,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685351566] [2021-05-22 01:59:39,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:39,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:39,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:39,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685351566] [2021-05-22 01:59:39,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685351566] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:39,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:39,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:39,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823607941] [2021-05-22 01:59:39,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:39,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:39,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:39,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:39,632 INFO L87 Difference]: Start difference. First operand 5356 states and 25291 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:39,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:39,739 INFO L93 Difference]: Finished difference Result 11910 states and 53057 transitions. [2021-05-22 01:59:39,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:39,739 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:39,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:39,768 INFO L225 Difference]: With dead ends: 11910 [2021-05-22 01:59:39,769 INFO L226 Difference]: Without dead ends: 11290 [2021-05-22 01:59:39,769 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:39,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11290 states. [2021-05-22 01:59:39,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11290 to 5213. [2021-05-22 01:59:39,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 5212 states have (on average 4.739447429009977) internal successors, (24702), 5212 states have internal predecessors, (24702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:40,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 24702 transitions. [2021-05-22 01:59:40,003 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 24702 transitions. Word has length 29 [2021-05-22 01:59:40,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:40,003 INFO L482 AbstractCegarLoop]: Abstraction has 5213 states and 24702 transitions. [2021-05-22 01:59:40,003 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:40,003 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 24702 transitions. [2021-05-22 01:59:40,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:40,012 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:40,012 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:40,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-05-22 01:59:40,012 INFO L430 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:40,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:40,012 INFO L82 PathProgramCache]: Analyzing trace with hash -67711059, now seen corresponding path program 285 times [2021-05-22 01:59:40,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:40,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278397852] [2021-05-22 01:59:40,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:40,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:40,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278397852] [2021-05-22 01:59:40,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278397852] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:40,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:40,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:40,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362734800] [2021-05-22 01:59:40,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:40,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:40,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:40,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:40,141 INFO L87 Difference]: Start difference. First operand 5213 states and 24702 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:40,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:40,233 INFO L93 Difference]: Finished difference Result 11934 states and 53217 transitions. [2021-05-22 01:59:40,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:40,233 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:40,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:40,262 INFO L225 Difference]: With dead ends: 11934 [2021-05-22 01:59:40,262 INFO L226 Difference]: Without dead ends: 11392 [2021-05-22 01:59:40,262 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:40,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11392 states. [2021-05-22 01:59:40,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11392 to 5321. [2021-05-22 01:59:40,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5321 states, 5320 states have (on average 4.718421052631579) internal successors, (25102), 5320 states have internal predecessors, (25102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:40,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5321 states to 5321 states and 25102 transitions. [2021-05-22 01:59:40,495 INFO L78 Accepts]: Start accepts. Automaton has 5321 states and 25102 transitions. Word has length 29 [2021-05-22 01:59:40,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:40,495 INFO L482 AbstractCegarLoop]: Abstraction has 5321 states and 25102 transitions. [2021-05-22 01:59:40,495 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:40,495 INFO L276 IsEmpty]: Start isEmpty. Operand 5321 states and 25102 transitions. [2021-05-22 01:59:40,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:40,504 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:40,504 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:40,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-05-22 01:59:40,504 INFO L430 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:40,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:40,504 INFO L82 PathProgramCache]: Analyzing trace with hash -148600915, now seen corresponding path program 286 times [2021-05-22 01:59:40,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:40,504 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996829166] [2021-05-22 01:59:40,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:40,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:40,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996829166] [2021-05-22 01:59:40,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996829166] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:40,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:40,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:40,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13752790] [2021-05-22 01:59:40,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:40,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:40,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:40,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:40,608 INFO L87 Difference]: Start difference. First operand 5321 states and 25102 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:40,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:40,720 INFO L93 Difference]: Finished difference Result 11863 states and 52834 transitions. [2021-05-22 01:59:40,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:40,721 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:40,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:40,748 INFO L225 Difference]: With dead ends: 11863 [2021-05-22 01:59:40,749 INFO L226 Difference]: Without dead ends: 11284 [2021-05-22 01:59:40,749 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:40,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11284 states. [2021-05-22 01:59:40,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11284 to 5213. [2021-05-22 01:59:40,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 5212 states have (on average 4.729086722947045) internal successors, (24648), 5212 states have internal predecessors, (24648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:40,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 24648 transitions. [2021-05-22 01:59:40,979 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 24648 transitions. Word has length 29 [2021-05-22 01:59:40,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:40,979 INFO L482 AbstractCegarLoop]: Abstraction has 5213 states and 24648 transitions. [2021-05-22 01:59:40,979 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:40,979 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 24648 transitions. [2021-05-22 01:59:40,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:40,987 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:40,987 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:40,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-05-22 01:59:40,987 INFO L430 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:40,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:40,988 INFO L82 PathProgramCache]: Analyzing trace with hash 914636555, now seen corresponding path program 287 times [2021-05-22 01:59:40,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:40,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030813852] [2021-05-22 01:59:40,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:41,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:41,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:41,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030813852] [2021-05-22 01:59:41,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030813852] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:41,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:41,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:41,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533878476] [2021-05-22 01:59:41,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:41,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:41,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:41,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:41,081 INFO L87 Difference]: Start difference. First operand 5213 states and 24648 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:41,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:41,193 INFO L93 Difference]: Finished difference Result 11772 states and 52503 transitions. [2021-05-22 01:59:41,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:41,193 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:41,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:41,222 INFO L225 Difference]: With dead ends: 11772 [2021-05-22 01:59:41,222 INFO L226 Difference]: Without dead ends: 11295 [2021-05-22 01:59:41,223 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:41,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11295 states. [2021-05-22 01:59:41,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11295 to 5289. [2021-05-22 01:59:41,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5289 states, 5288 states have (on average 4.7155824508320725) internal successors, (24936), 5288 states have internal predecessors, (24936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:41,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5289 states to 5289 states and 24936 transitions. [2021-05-22 01:59:41,472 INFO L78 Accepts]: Start accepts. Automaton has 5289 states and 24936 transitions. Word has length 29 [2021-05-22 01:59:41,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:41,472 INFO L482 AbstractCegarLoop]: Abstraction has 5289 states and 24936 transitions. [2021-05-22 01:59:41,472 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:41,472 INFO L276 IsEmpty]: Start isEmpty. Operand 5289 states and 24936 transitions. [2021-05-22 01:59:41,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:41,481 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:41,482 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:41,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-05-22 01:59:41,482 INFO L430 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:41,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:41,482 INFO L82 PathProgramCache]: Analyzing trace with hash -580042003, now seen corresponding path program 288 times [2021-05-22 01:59:41,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:41,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596997823] [2021-05-22 01:59:41,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:41,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:41,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596997823] [2021-05-22 01:59:41,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596997823] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:41,579 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:41,579 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:41,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001794681] [2021-05-22 01:59:41,580 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:41,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:41,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:41,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:41,580 INFO L87 Difference]: Start difference. First operand 5289 states and 24936 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:41,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:41,693 INFO L93 Difference]: Finished difference Result 11766 states and 52410 transitions. [2021-05-22 01:59:41,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:41,693 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:41,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:41,721 INFO L225 Difference]: With dead ends: 11766 [2021-05-22 01:59:41,721 INFO L226 Difference]: Without dead ends: 11121 [2021-05-22 01:59:41,721 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:41,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11121 states. [2021-05-22 01:59:41,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11121 to 5115. [2021-05-22 01:59:41,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 4.756941728588189) internal successors, (24327), 5114 states have internal predecessors, (24327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:41,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 24327 transitions. [2021-05-22 01:59:41,948 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 24327 transitions. Word has length 29 [2021-05-22 01:59:41,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:41,948 INFO L482 AbstractCegarLoop]: Abstraction has 5115 states and 24327 transitions. [2021-05-22 01:59:41,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:41,948 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 24327 transitions. [2021-05-22 01:59:41,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:41,957 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:41,957 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:41,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-05-22 01:59:41,957 INFO L430 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:41,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:41,957 INFO L82 PathProgramCache]: Analyzing trace with hash 715106669, now seen corresponding path program 289 times [2021-05-22 01:59:41,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:41,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66993829] [2021-05-22 01:59:41,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:42,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:42,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66993829] [2021-05-22 01:59:42,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66993829] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:42,081 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:42,081 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:42,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887860164] [2021-05-22 01:59:42,081 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:42,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:42,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:42,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:42,081 INFO L87 Difference]: Start difference. First operand 5115 states and 24327 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:42,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:42,194 INFO L93 Difference]: Finished difference Result 11189 states and 49984 transitions. [2021-05-22 01:59:42,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:42,195 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:42,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:42,221 INFO L225 Difference]: With dead ends: 11189 [2021-05-22 01:59:42,221 INFO L226 Difference]: Without dead ends: 10774 [2021-05-22 01:59:42,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:42,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10774 states. [2021-05-22 01:59:42,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10774 to 5243. [2021-05-22 01:59:42,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 5242 states have (on average 4.7491415490270885) internal successors, (24895), 5242 states have internal predecessors, (24895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:42,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 24895 transitions. [2021-05-22 01:59:42,530 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 24895 transitions. Word has length 29 [2021-05-22 01:59:42,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:42,530 INFO L482 AbstractCegarLoop]: Abstraction has 5243 states and 24895 transitions. [2021-05-22 01:59:42,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:42,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 24895 transitions. [2021-05-22 01:59:42,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:42,539 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:42,539 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:42,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-05-22 01:59:42,539 INFO L430 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:42,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:42,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1825040019, now seen corresponding path program 290 times [2021-05-22 01:59:42,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:42,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916573117] [2021-05-22 01:59:42,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:42,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:42,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916573117] [2021-05-22 01:59:42,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916573117] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:42,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:42,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:42,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890859832] [2021-05-22 01:59:42,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:42,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:42,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:42,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:42,660 INFO L87 Difference]: Start difference. First operand 5243 states and 24895 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:42,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:42,755 INFO L93 Difference]: Finished difference Result 11316 states and 50463 transitions. [2021-05-22 01:59:42,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:42,755 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:42,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:42,782 INFO L225 Difference]: With dead ends: 11316 [2021-05-22 01:59:42,782 INFO L226 Difference]: Without dead ends: 10694 [2021-05-22 01:59:42,782 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:42,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10694 states. [2021-05-22 01:59:42,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10694 to 5163. [2021-05-22 01:59:43,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 4.754552499031383) internal successors, (24543), 5162 states have internal predecessors, (24543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 24543 transitions. [2021-05-22 01:59:43,018 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 24543 transitions. Word has length 29 [2021-05-22 01:59:43,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:43,018 INFO L482 AbstractCegarLoop]: Abstraction has 5163 states and 24543 transitions. [2021-05-22 01:59:43,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:43,018 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 24543 transitions. [2021-05-22 01:59:43,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:43,027 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:43,027 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:43,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-05-22 01:59:43,027 INFO L430 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:43,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:43,027 INFO L82 PathProgramCache]: Analyzing trace with hash 799894667, now seen corresponding path program 291 times [2021-05-22 01:59:43,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:43,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518404549] [2021-05-22 01:59:43,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:43,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:43,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:43,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518404549] [2021-05-22 01:59:43,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518404549] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:43,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:43,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:43,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350772137] [2021-05-22 01:59:43,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:43,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:43,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:43,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:43,137 INFO L87 Difference]: Start difference. First operand 5163 states and 24543 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:43,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:43,247 INFO L93 Difference]: Finished difference Result 11014 states and 49201 transitions. [2021-05-22 01:59:43,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:43,247 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:43,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:43,275 INFO L225 Difference]: With dead ends: 11014 [2021-05-22 01:59:43,275 INFO L226 Difference]: Without dead ends: 10599 [2021-05-22 01:59:43,275 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:43,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10599 states. [2021-05-22 01:59:43,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10599 to 5195. [2021-05-22 01:59:43,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.7468232576049285) internal successors, (24655), 5194 states have internal predecessors, (24655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:43,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24655 transitions. [2021-05-22 01:59:43,504 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24655 transitions. Word has length 29 [2021-05-22 01:59:43,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:43,504 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24655 transitions. [2021-05-22 01:59:43,504 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:43,504 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24655 transitions. [2021-05-22 01:59:43,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:43,512 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:43,512 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:43,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-05-22 01:59:43,512 INFO L430 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:43,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:43,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1602226327, now seen corresponding path program 292 times [2021-05-22 01:59:43,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:43,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352587519] [2021-05-22 01:59:43,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:43,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:43,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352587519] [2021-05-22 01:59:43,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352587519] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:43,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:43,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:43,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051177909] [2021-05-22 01:59:43,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:43,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:43,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:43,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:43,624 INFO L87 Difference]: Start difference. First operand 5195 states and 24655 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:43,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:43,730 INFO L93 Difference]: Finished difference Result 11014 states and 49169 transitions. [2021-05-22 01:59:43,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:43,731 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:43,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:43,757 INFO L225 Difference]: With dead ends: 11014 [2021-05-22 01:59:43,757 INFO L226 Difference]: Without dead ends: 10567 [2021-05-22 01:59:43,757 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:43,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10567 states. [2021-05-22 01:59:43,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10567 to 5163. [2021-05-22 01:59:43,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 4.7514529252227815) internal successors, (24527), 5162 states have internal predecessors, (24527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:43,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 24527 transitions. [2021-05-22 01:59:43,983 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 24527 transitions. Word has length 29 [2021-05-22 01:59:43,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:43,983 INFO L482 AbstractCegarLoop]: Abstraction has 5163 states and 24527 transitions. [2021-05-22 01:59:43,983 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:43,984 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 24527 transitions. [2021-05-22 01:59:43,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:43,992 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:43,992 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:43,992 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-05-22 01:59:43,992 INFO L430 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:43,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:43,992 INFO L82 PathProgramCache]: Analyzing trace with hash -880622777, now seen corresponding path program 293 times [2021-05-22 01:59:43,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:43,992 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120952503] [2021-05-22 01:59:43,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:44,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:44,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:44,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120952503] [2021-05-22 01:59:44,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120952503] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:44,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:44,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:44,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172130574] [2021-05-22 01:59:44,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:44,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:44,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:44,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:44,109 INFO L87 Difference]: Start difference. First operand 5163 states and 24527 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:44,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:44,197 INFO L93 Difference]: Finished difference Result 11316 states and 50463 transitions. [2021-05-22 01:59:44,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:44,197 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:44,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:44,224 INFO L225 Difference]: With dead ends: 11316 [2021-05-22 01:59:44,224 INFO L226 Difference]: Without dead ends: 10774 [2021-05-22 01:59:44,224 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:44,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10774 states. [2021-05-22 01:59:44,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10774 to 5243. [2021-05-22 01:59:44,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 5242 states have (on average 4.733880198397558) internal successors, (24815), 5242 states have internal predecessors, (24815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:44,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 24815 transitions. [2021-05-22 01:59:44,453 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 24815 transitions. Word has length 29 [2021-05-22 01:59:44,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:44,453 INFO L482 AbstractCegarLoop]: Abstraction has 5243 states and 24815 transitions. [2021-05-22 01:59:44,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:44,453 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 24815 transitions. [2021-05-22 01:59:44,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:44,461 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:44,461 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:44,461 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-05-22 01:59:44,462 INFO L430 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:44,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:44,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1087430743, now seen corresponding path program 294 times [2021-05-22 01:59:44,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:44,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274294739] [2021-05-22 01:59:44,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:44,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:44,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274294739] [2021-05-22 01:59:44,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274294739] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:44,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:44,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:44,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512586247] [2021-05-22 01:59:44,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:44,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:44,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:44,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:44,583 INFO L87 Difference]: Start difference. First operand 5243 states and 24815 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:44,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:44,687 INFO L93 Difference]: Finished difference Result 11189 states and 49856 transitions. [2021-05-22 01:59:44,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:44,688 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:44,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:44,714 INFO L225 Difference]: With dead ends: 11189 [2021-05-22 01:59:44,714 INFO L226 Difference]: Without dead ends: 10662 [2021-05-22 01:59:44,714 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:44,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10662 states. [2021-05-22 01:59:44,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10662 to 5131. [2021-05-22 01:59:44,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.756140350877193) internal successors, (24399), 5130 states have internal predecessors, (24399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:44,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24399 transitions. [2021-05-22 01:59:44,943 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24399 transitions. Word has length 29 [2021-05-22 01:59:44,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:44,943 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24399 transitions. [2021-05-22 01:59:44,943 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:44,943 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24399 transitions. [2021-05-22 01:59:44,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:44,952 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:44,952 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:44,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-05-22 01:59:44,952 INFO L430 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:44,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:44,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1200077387, now seen corresponding path program 295 times [2021-05-22 01:59:44,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:44,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455359277] [2021-05-22 01:59:44,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:45,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:45,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455359277] [2021-05-22 01:59:45,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455359277] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:45,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:45,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:45,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054019370] [2021-05-22 01:59:45,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:45,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:45,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:45,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:45,072 INFO L87 Difference]: Start difference. First operand 5131 states and 24399 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:45,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:45,181 INFO L93 Difference]: Finished difference Result 11297 states and 50484 transitions. [2021-05-22 01:59:45,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:45,181 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:45,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:45,208 INFO L225 Difference]: With dead ends: 11297 [2021-05-22 01:59:45,209 INFO L226 Difference]: Without dead ends: 10882 [2021-05-22 01:59:45,209 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:45,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10882 states. [2021-05-22 01:59:45,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10882 to 5251. [2021-05-22 01:59:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 4.747238095238095) internal successors, (24923), 5250 states have internal predecessors, (24923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:45,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 24923 transitions. [2021-05-22 01:59:45,449 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 24923 transitions. Word has length 29 [2021-05-22 01:59:45,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:45,449 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 24923 transitions. [2021-05-22 01:59:45,449 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:45,449 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 24923 transitions. [2021-05-22 01:59:45,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:45,458 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:45,458 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:45,458 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-05-22 01:59:45,458 INFO L430 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:45,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:45,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1340069301, now seen corresponding path program 296 times [2021-05-22 01:59:45,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:45,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021436916] [2021-05-22 01:59:45,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:45,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:45,578 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:45,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021436916] [2021-05-22 01:59:45,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021436916] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:45,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:45,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:45,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637274819] [2021-05-22 01:59:45,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:45,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:45,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:45,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:45,579 INFO L87 Difference]: Start difference. First operand 5251 states and 24923 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:45,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:45,683 INFO L93 Difference]: Finished difference Result 11424 states and 50963 transitions. [2021-05-22 01:59:45,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:45,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:45,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:45,710 INFO L225 Difference]: With dead ends: 11424 [2021-05-22 01:59:45,710 INFO L226 Difference]: Without dead ends: 10802 [2021-05-22 01:59:45,710 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:45,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10802 states. [2021-05-22 01:59:45,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10802 to 5171. [2021-05-22 01:59:45,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.751063829787234) internal successors, (24563), 5170 states have internal predecessors, (24563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:45,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24563 transitions. [2021-05-22 01:59:45,939 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24563 transitions. Word has length 29 [2021-05-22 01:59:45,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:45,939 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24563 transitions. [2021-05-22 01:59:45,939 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:45,939 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24563 transitions. [2021-05-22 01:59:45,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:45,948 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:45,948 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:45,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-05-22 01:59:45,948 INFO L430 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:45,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:45,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1412842101, now seen corresponding path program 297 times [2021-05-22 01:59:45,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:45,948 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271911673] [2021-05-22 01:59:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:46,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:46,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271911673] [2021-05-22 01:59:46,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271911673] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:46,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:46,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:46,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524137737] [2021-05-22 01:59:46,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:46,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:46,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:46,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:46,054 INFO L87 Difference]: Start difference. First operand 5171 states and 24563 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:46,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:46,169 INFO L93 Difference]: Finished difference Result 11194 states and 50025 transitions. [2021-05-22 01:59:46,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:46,169 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:46,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:46,196 INFO L225 Difference]: With dead ends: 11194 [2021-05-22 01:59:46,197 INFO L226 Difference]: Without dead ends: 10779 [2021-05-22 01:59:46,197 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:46,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10779 states. [2021-05-22 01:59:46,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10779 to 5219. [2021-05-22 01:59:46,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5219 states, 5218 states have (on average 4.741088539670372) internal successors, (24739), 5218 states have internal predecessors, (24739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:46,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 24739 transitions. [2021-05-22 01:59:46,427 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 24739 transitions. Word has length 29 [2021-05-22 01:59:46,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:46,427 INFO L482 AbstractCegarLoop]: Abstraction has 5219 states and 24739 transitions. [2021-05-22 01:59:46,427 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:46,427 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 24739 transitions. [2021-05-22 01:59:46,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:46,436 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:46,436 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:46,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-05-22 01:59:46,436 INFO L430 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:46,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:46,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1751772333, now seen corresponding path program 298 times [2021-05-22 01:59:46,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:46,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775816163] [2021-05-22 01:59:46,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:46,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:46,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775816163] [2021-05-22 01:59:46,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775816163] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:46,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:46,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:46,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605006395] [2021-05-22 01:59:46,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:46,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:46,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:46,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:46,563 INFO L87 Difference]: Start difference. First operand 5219 states and 24739 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:46,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:46,680 INFO L93 Difference]: Finished difference Result 11250 states and 50229 transitions. [2021-05-22 01:59:46,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:46,680 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:46,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:46,707 INFO L225 Difference]: With dead ends: 11250 [2021-05-22 01:59:46,707 INFO L226 Difference]: Without dead ends: 10731 [2021-05-22 01:59:46,707 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:46,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10731 states. [2021-05-22 01:59:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10731 to 5171. [2021-05-22 01:59:46,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.74642166344294) internal successors, (24539), 5170 states have internal predecessors, (24539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:46,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24539 transitions. [2021-05-22 01:59:46,938 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24539 transitions. Word has length 29 [2021-05-22 01:59:46,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:46,938 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24539 transitions. [2021-05-22 01:59:46,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:46,938 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24539 transitions. [2021-05-22 01:59:46,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:46,946 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:46,947 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:46,947 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-05-22 01:59:46,947 INFO L430 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:46,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:46,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1818401965, now seen corresponding path program 299 times [2021-05-22 01:59:46,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:46,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067821988] [2021-05-22 01:59:46,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:47,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:47,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:47,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067821988] [2021-05-22 01:59:47,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067821988] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:47,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:47,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:47,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721263055] [2021-05-22 01:59:47,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:47,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:47,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:47,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:47,066 INFO L87 Difference]: Start difference. First operand 5171 states and 24539 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:47,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:47,169 INFO L93 Difference]: Finished difference Result 11508 states and 51339 transitions. [2021-05-22 01:59:47,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:47,169 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:47,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:47,197 INFO L225 Difference]: With dead ends: 11508 [2021-05-22 01:59:47,197 INFO L226 Difference]: Without dead ends: 10966 [2021-05-22 01:59:47,198 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:47,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10966 states. [2021-05-22 01:59:47,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10966 to 5279. [2021-05-22 01:59:47,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5279 states, 5278 states have (on average 4.725085259568019) internal successors, (24939), 5278 states have internal predecessors, (24939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:47,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5279 states to 5279 states and 24939 transitions. [2021-05-22 01:59:47,436 INFO L78 Accepts]: Start accepts. Automaton has 5279 states and 24939 transitions. Word has length 29 [2021-05-22 01:59:47,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:47,436 INFO L482 AbstractCegarLoop]: Abstraction has 5279 states and 24939 transitions. [2021-05-22 01:59:47,436 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:47,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5279 states and 24939 transitions. [2021-05-22 01:59:47,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:47,445 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:47,445 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:47,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-05-22 01:59:47,445 INFO L430 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:47,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:47,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1728642315, now seen corresponding path program 300 times [2021-05-22 01:59:47,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:47,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693891034] [2021-05-22 01:59:47,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:47,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:47,563 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:47,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693891034] [2021-05-22 01:59:47,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693891034] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:47,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:47,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:47,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79807022] [2021-05-22 01:59:47,563 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:47,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:47,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:47,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:47,563 INFO L87 Difference]: Start difference. First operand 5279 states and 24939 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:47,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:47,690 INFO L93 Difference]: Finished difference Result 11437 states and 50956 transitions. [2021-05-22 01:59:47,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:47,690 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:47,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:47,717 INFO L225 Difference]: With dead ends: 11437 [2021-05-22 01:59:47,717 INFO L226 Difference]: Without dead ends: 10818 [2021-05-22 01:59:47,718 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:47,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10818 states. [2021-05-22 01:59:47,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10818 to 5131. [2021-05-22 01:59:47,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.753021442495127) internal successors, (24383), 5130 states have internal predecessors, (24383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:47,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24383 transitions. [2021-05-22 01:59:47,950 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24383 transitions. Word has length 29 [2021-05-22 01:59:47,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:47,950 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24383 transitions. [2021-05-22 01:59:47,950 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:47,950 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24383 transitions. [2021-05-22 01:59:47,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:47,958 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:47,958 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:47,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-05-22 01:59:47,959 INFO L430 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:47,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:47,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1906241239, now seen corresponding path program 301 times [2021-05-22 01:59:47,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:47,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503387741] [2021-05-22 01:59:47,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:48,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:48,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503387741] [2021-05-22 01:59:48,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503387741] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:48,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:48,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:48,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140325777] [2021-05-22 01:59:48,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:48,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:48,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:48,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:48,063 INFO L87 Difference]: Start difference. First operand 5131 states and 24383 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:48,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:48,186 INFO L93 Difference]: Finished difference Result 10863 states and 48558 transitions. [2021-05-22 01:59:48,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:48,187 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:48,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:48,213 INFO L225 Difference]: With dead ends: 10863 [2021-05-22 01:59:48,213 INFO L226 Difference]: Without dead ends: 10448 [2021-05-22 01:59:48,213 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:48,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10448 states. [2021-05-22 01:59:48,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10448 to 5179. [2021-05-22 01:59:48,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.746040942448822) internal successors, (24575), 5178 states have internal predecessors, (24575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:48,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24575 transitions. [2021-05-22 01:59:48,444 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24575 transitions. Word has length 29 [2021-05-22 01:59:48,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:48,444 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24575 transitions. [2021-05-22 01:59:48,444 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:48,444 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24575 transitions. [2021-05-22 01:59:48,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:48,453 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:48,453 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:48,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-05-22 01:59:48,453 INFO L430 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:48,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:48,453 INFO L82 PathProgramCache]: Analyzing trace with hash -13394937, now seen corresponding path program 302 times [2021-05-22 01:59:48,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:48,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487313917] [2021-05-22 01:59:48,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:48,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:48,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:48,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487313917] [2021-05-22 01:59:48,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487313917] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:48,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:48,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:48,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273750369] [2021-05-22 01:59:48,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:48,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:48,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:48,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:48,555 INFO L87 Difference]: Start difference. First operand 5179 states and 24575 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:48,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:48,664 INFO L93 Difference]: Finished difference Result 10863 states and 48526 transitions. [2021-05-22 01:59:48,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:48,665 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:48,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:48,691 INFO L225 Difference]: With dead ends: 10863 [2021-05-22 01:59:48,691 INFO L226 Difference]: Without dead ends: 10416 [2021-05-22 01:59:48,691 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 107.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:48,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10416 states. [2021-05-22 01:59:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10416 to 5147. [2021-05-22 01:59:48,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5147 states, 5146 states have (on average 4.750680139914497) internal successors, (24447), 5146 states have internal predecessors, (24447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:48,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5147 states to 5147 states and 24447 transitions. [2021-05-22 01:59:48,917 INFO L78 Accepts]: Start accepts. Automaton has 5147 states and 24447 transitions. Word has length 29 [2021-05-22 01:59:48,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:48,917 INFO L482 AbstractCegarLoop]: Abstraction has 5147 states and 24447 transitions. [2021-05-22 01:59:48,917 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:48,918 INFO L276 IsEmpty]: Start isEmpty. Operand 5147 states and 24447 transitions. [2021-05-22 01:59:48,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:48,926 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:48,926 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:48,926 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-05-22 01:59:48,926 INFO L430 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:48,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:48,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1214766347, now seen corresponding path program 303 times [2021-05-22 01:59:48,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:48,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316617154] [2021-05-22 01:59:48,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:49,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:49,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316617154] [2021-05-22 01:59:49,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316617154] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:49,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:49,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:49,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545463524] [2021-05-22 01:59:49,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:49,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:49,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:49,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:49,037 INFO L87 Difference]: Start difference. First operand 5147 states and 24447 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:49,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:49,140 INFO L93 Difference]: Finished difference Result 10935 states and 48874 transitions. [2021-05-22 01:59:49,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:49,140 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:49,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:49,166 INFO L225 Difference]: With dead ends: 10935 [2021-05-22 01:59:49,166 INFO L226 Difference]: Without dead ends: 10520 [2021-05-22 01:59:49,166 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:49,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10520 states. [2021-05-22 01:59:49,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10520 to 5195. [2021-05-22 01:59:49,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.7406623026569115) internal successors, (24623), 5194 states have internal predecessors, (24623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:49,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24623 transitions. [2021-05-22 01:59:49,393 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24623 transitions. Word has length 29 [2021-05-22 01:59:49,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:49,393 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24623 transitions. [2021-05-22 01:59:49,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:49,393 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24623 transitions. [2021-05-22 01:59:49,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:49,401 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:49,401 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:49,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-05-22 01:59:49,401 INFO L430 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:49,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:49,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1628659787, now seen corresponding path program 304 times [2021-05-22 01:59:49,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:49,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862945682] [2021-05-22 01:59:49,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:49,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:49,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862945682] [2021-05-22 01:59:49,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862945682] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:49,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:49,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:49,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039577530] [2021-05-22 01:59:49,500 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:49,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:49,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:49,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:49,501 INFO L87 Difference]: Start difference. First operand 5195 states and 24623 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:49,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:49,609 INFO L93 Difference]: Finished difference Result 10991 states and 49078 transitions. [2021-05-22 01:59:49,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:49,610 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:49,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:49,636 INFO L225 Difference]: With dead ends: 10991 [2021-05-22 01:59:49,636 INFO L226 Difference]: Without dead ends: 10472 [2021-05-22 01:59:49,636 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:49,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10472 states. [2021-05-22 01:59:49,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10472 to 5147. [2021-05-22 01:59:49,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5147 states, 5146 states have (on average 4.747570928876797) internal successors, (24431), 5146 states have internal predecessors, (24431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:49,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5147 states to 5147 states and 24431 transitions. [2021-05-22 01:59:49,861 INFO L78 Accepts]: Start accepts. Automaton has 5147 states and 24431 transitions. Word has length 29 [2021-05-22 01:59:49,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:49,861 INFO L482 AbstractCegarLoop]: Abstraction has 5147 states and 24431 transitions. [2021-05-22 01:59:49,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:49,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5147 states and 24431 transitions. [2021-05-22 01:59:49,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:49,870 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:49,870 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:49,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-05-22 01:59:49,870 INFO L430 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:49,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:49,871 INFO L82 PathProgramCache]: Analyzing trace with hash -2106431353, now seen corresponding path program 305 times [2021-05-22 01:59:49,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:49,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443823364] [2021-05-22 01:59:49,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:49,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:49,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:49,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443823364] [2021-05-22 01:59:49,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443823364] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:49,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:49,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:49,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282880395] [2021-05-22 01:59:49,981 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:49,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:49,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:49,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:49,982 INFO L87 Difference]: Start difference. First operand 5147 states and 24431 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:50,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:50,069 INFO L93 Difference]: Finished difference Result 10935 states and 48858 transitions. [2021-05-22 01:59:50,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:50,070 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:50,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:50,095 INFO L225 Difference]: With dead ends: 10935 [2021-05-22 01:59:50,095 INFO L226 Difference]: Without dead ends: 10520 [2021-05-22 01:59:50,095 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:50,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10520 states. [2021-05-22 01:59:50,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10520 to 5195. [2021-05-22 01:59:50,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.737581825182903) internal successors, (24607), 5194 states have internal predecessors, (24607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:50,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24607 transitions. [2021-05-22 01:59:50,319 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24607 transitions. Word has length 29 [2021-05-22 01:59:50,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:50,319 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24607 transitions. [2021-05-22 01:59:50,319 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:50,319 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24607 transitions. [2021-05-22 01:59:50,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:50,328 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:50,328 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:50,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-05-22 01:59:50,328 INFO L430 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:50,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:50,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1981727977, now seen corresponding path program 306 times [2021-05-22 01:59:50,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:50,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703836908] [2021-05-22 01:59:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:50,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:50,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:50,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703836908] [2021-05-22 01:59:50,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703836908] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:50,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:50,449 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:50,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454144233] [2021-05-22 01:59:50,449 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:50,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:50,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:50,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:50,449 INFO L87 Difference]: Start difference. First operand 5195 states and 24607 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:50,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:50,558 INFO L93 Difference]: Finished difference Result 10991 states and 49062 transitions. [2021-05-22 01:59:50,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:50,558 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:50,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:50,584 INFO L225 Difference]: With dead ends: 10991 [2021-05-22 01:59:50,584 INFO L226 Difference]: Without dead ends: 10456 [2021-05-22 01:59:50,584 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:50,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10456 states. [2021-05-22 01:59:50,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10456 to 5131. [2021-05-22 01:59:50,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.751461988304094) internal successors, (24375), 5130 states have internal predecessors, (24375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:50,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24375 transitions. [2021-05-22 01:59:50,809 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24375 transitions. Word has length 29 [2021-05-22 01:59:50,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:50,809 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24375 transitions. [2021-05-22 01:59:50,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:50,809 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24375 transitions. [2021-05-22 01:59:50,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:50,817 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:50,817 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:50,817 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-05-22 01:59:50,817 INFO L430 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:50,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:50,818 INFO L82 PathProgramCache]: Analyzing trace with hash 767915237, now seen corresponding path program 307 times [2021-05-22 01:59:50,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:50,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156679535] [2021-05-22 01:59:50,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:50,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:50,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156679535] [2021-05-22 01:59:50,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156679535] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:50,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:50,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:50,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013491581] [2021-05-22 01:59:50,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:50,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:50,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:50,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:50,935 INFO L87 Difference]: Start difference. First operand 5131 states and 24375 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:51,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:51,025 INFO L93 Difference]: Finished difference Result 11424 states and 50987 transitions. [2021-05-22 01:59:51,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:51,025 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:51,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:51,052 INFO L225 Difference]: With dead ends: 11424 [2021-05-22 01:59:51,052 INFO L226 Difference]: Without dead ends: 10882 [2021-05-22 01:59:51,052 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:51,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10882 states. [2021-05-22 01:59:51,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10882 to 5251. [2021-05-22 01:59:51,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 4.736571428571429) internal successors, (24867), 5250 states have internal predecessors, (24867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:51,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 24867 transitions. [2021-05-22 01:59:51,282 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 24867 transitions. Word has length 29 [2021-05-22 01:59:51,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:51,282 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 24867 transitions. [2021-05-22 01:59:51,282 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:51,282 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 24867 transitions. [2021-05-22 01:59:51,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:51,291 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:51,291 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:51,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-05-22 01:59:51,291 INFO L430 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:51,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:51,291 INFO L82 PathProgramCache]: Analyzing trace with hash 561107271, now seen corresponding path program 308 times [2021-05-22 01:59:51,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:51,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204683451] [2021-05-22 01:59:51,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:51,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:51,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:51,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204683451] [2021-05-22 01:59:51,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204683451] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:51,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:51,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:51,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147308692] [2021-05-22 01:59:51,407 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:51,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:51,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:51,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:51,407 INFO L87 Difference]: Start difference. First operand 5251 states and 24867 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:51,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:51,495 INFO L93 Difference]: Finished difference Result 11297 states and 50380 transitions. [2021-05-22 01:59:51,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:51,495 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:51,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:51,522 INFO L225 Difference]: With dead ends: 11297 [2021-05-22 01:59:51,522 INFO L226 Difference]: Without dead ends: 10802 [2021-05-22 01:59:51,522 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:51,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10802 states. [2021-05-22 01:59:51,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10802 to 5171. [2021-05-22 01:59:51,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.74642166344294) internal successors, (24539), 5170 states have internal predecessors, (24539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24539 transitions. [2021-05-22 01:59:51,747 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24539 transitions. Word has length 29 [2021-05-22 01:59:51,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:51,747 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24539 transitions. [2021-05-22 01:59:51,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:51,747 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24539 transitions. [2021-05-22 01:59:51,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:51,757 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:51,757 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:51,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-05-22 01:59:51,757 INFO L430 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:51,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:51,757 INFO L82 PathProgramCache]: Analyzing trace with hash -406044473, now seen corresponding path program 309 times [2021-05-22 01:59:51,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:51,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566153728] [2021-05-22 01:59:51,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:51,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:51,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566153728] [2021-05-22 01:59:51,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566153728] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:51,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:51,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:51,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111551378] [2021-05-22 01:59:51,877 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:51,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:51,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:51,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:51,877 INFO L87 Difference]: Start difference. First operand 5171 states and 24539 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:51,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:51,968 INFO L93 Difference]: Finished difference Result 11508 states and 51339 transitions. [2021-05-22 01:59:51,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:51,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:51,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:51,996 INFO L225 Difference]: With dead ends: 11508 [2021-05-22 01:59:51,997 INFO L226 Difference]: Without dead ends: 10966 [2021-05-22 01:59:51,997 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:52,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10966 states. [2021-05-22 01:59:52,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10966 to 5279. [2021-05-22 01:59:52,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5279 states, 5278 states have (on average 4.725085259568019) internal successors, (24939), 5278 states have internal predecessors, (24939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:52,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5279 states to 5279 states and 24939 transitions. [2021-05-22 01:59:52,228 INFO L78 Accepts]: Start accepts. Automaton has 5279 states and 24939 transitions. Word has length 29 [2021-05-22 01:59:52,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:52,228 INFO L482 AbstractCegarLoop]: Abstraction has 5279 states and 24939 transitions. [2021-05-22 01:59:52,228 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:52,228 INFO L276 IsEmpty]: Start isEmpty. Operand 5279 states and 24939 transitions. [2021-05-22 01:59:52,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:52,237 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:52,237 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:52,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-05-22 01:59:52,237 INFO L430 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:52,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:52,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1644347321, now seen corresponding path program 310 times [2021-05-22 01:59:52,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:52,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294120527] [2021-05-22 01:59:52,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:52,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:52,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:52,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294120527] [2021-05-22 01:59:52,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294120527] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:52,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:52,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:52,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725332714] [2021-05-22 01:59:52,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:52,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:52,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:52,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:52,357 INFO L87 Difference]: Start difference. First operand 5279 states and 24939 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:52,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:52,497 INFO L93 Difference]: Finished difference Result 11437 states and 50956 transitions. [2021-05-22 01:59:52,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:52,497 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:52,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:52,524 INFO L225 Difference]: With dead ends: 11437 [2021-05-22 01:59:52,524 INFO L226 Difference]: Without dead ends: 10858 [2021-05-22 01:59:52,524 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:52,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10858 states. [2021-05-22 01:59:52,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10858 to 5171. [2021-05-22 01:59:52,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.738684719535783) internal successors, (24499), 5170 states have internal predecessors, (24499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:52,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24499 transitions. [2021-05-22 01:59:52,748 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24499 transitions. Word has length 29 [2021-05-22 01:59:52,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:52,748 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24499 transitions. [2021-05-22 01:59:52,748 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:52,748 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24499 transitions. [2021-05-22 01:59:52,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:52,757 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:52,757 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:52,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-05-22 01:59:52,757 INFO L430 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:52,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:52,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1998967767, now seen corresponding path program 311 times [2021-05-22 01:59:52,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:52,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439494722] [2021-05-22 01:59:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:52,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:52,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439494722] [2021-05-22 01:59:52,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439494722] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:52,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:52,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:52,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431619829] [2021-05-22 01:59:52,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:52,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:52,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:52,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:52,875 INFO L87 Difference]: Start difference. First operand 5171 states and 24499 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:52,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:52,968 INFO L93 Difference]: Finished difference Result 11194 states and 49961 transitions. [2021-05-22 01:59:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:52,968 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:52,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:52,996 INFO L225 Difference]: With dead ends: 11194 [2021-05-22 01:59:52,997 INFO L226 Difference]: Without dead ends: 10779 [2021-05-22 01:59:52,997 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:53,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10779 states. [2021-05-22 01:59:53,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10779 to 5219. [2021-05-22 01:59:53,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5219 states, 5218 states have (on average 4.728823303947872) internal successors, (24675), 5218 states have internal predecessors, (24675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:53,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 24675 transitions. [2021-05-22 01:59:53,223 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 24675 transitions. Word has length 29 [2021-05-22 01:59:53,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:53,223 INFO L482 AbstractCegarLoop]: Abstraction has 5219 states and 24675 transitions. [2021-05-22 01:59:53,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:53,224 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 24675 transitions. [2021-05-22 01:59:53,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:53,232 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:53,232 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:53,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-05-22 01:59:53,232 INFO L430 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:53,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:53,232 INFO L82 PathProgramCache]: Analyzing trace with hash 179919879, now seen corresponding path program 312 times [2021-05-22 01:59:53,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:53,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746792119] [2021-05-22 01:59:53,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:53,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:53,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746792119] [2021-05-22 01:59:53,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746792119] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:53,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:53,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:53,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792262693] [2021-05-22 01:59:53,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:53,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:53,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:53,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:53,386 INFO L87 Difference]: Start difference. First operand 5219 states and 24675 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:53,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:53,507 INFO L93 Difference]: Finished difference Result 11250 states and 50165 transitions. [2021-05-22 01:59:53,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:53,507 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:53,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:53,533 INFO L225 Difference]: With dead ends: 11250 [2021-05-22 01:59:53,533 INFO L226 Difference]: Without dead ends: 10675 [2021-05-22 01:59:53,534 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 163.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:53,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10675 states. [2021-05-22 01:59:53,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10675 to 5115. [2021-05-22 01:59:53,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 4.755377395385217) internal successors, (24319), 5114 states have internal predecessors, (24319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:53,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 24319 transitions. [2021-05-22 01:59:53,762 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 24319 transitions. Word has length 29 [2021-05-22 01:59:53,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:53,762 INFO L482 AbstractCegarLoop]: Abstraction has 5115 states and 24319 transitions. [2021-05-22 01:59:53,762 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:53,762 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 24319 transitions. [2021-05-22 01:59:53,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:53,771 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:53,771 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:53,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-05-22 01:59:53,771 INFO L430 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:53,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:53,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1874106327, now seen corresponding path program 313 times [2021-05-22 01:59:53,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:53,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114715654] [2021-05-22 01:59:53,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:53,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:53,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114715654] [2021-05-22 01:59:53,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114715654] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:53,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:53,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:53,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947495171] [2021-05-22 01:59:53,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:53,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:53,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:53,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:53,884 INFO L87 Difference]: Start difference. First operand 5115 states and 24319 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:54,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:54,005 INFO L93 Difference]: Finished difference Result 10730 states and 47974 transitions. [2021-05-22 01:59:54,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:54,005 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:54,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:54,031 INFO L225 Difference]: With dead ends: 10730 [2021-05-22 01:59:54,032 INFO L226 Difference]: Without dead ends: 10315 [2021-05-22 01:59:54,032 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:54,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10315 states. [2021-05-22 01:59:54,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10315 to 5187. [2021-05-22 01:59:54,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.747204010798304) internal successors, (24619), 5186 states have internal predecessors, (24619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:54,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24619 transitions. [2021-05-22 01:59:54,256 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24619 transitions. Word has length 29 [2021-05-22 01:59:54,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:54,256 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24619 transitions. [2021-05-22 01:59:54,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:54,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24619 transitions. [2021-05-22 01:59:54,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:54,265 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:54,265 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:54,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-05-22 01:59:54,265 INFO L430 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:54,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:54,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1157443381, now seen corresponding path program 314 times [2021-05-22 01:59:54,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:54,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632239306] [2021-05-22 01:59:54,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:54,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:54,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632239306] [2021-05-22 01:59:54,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632239306] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:54,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:54,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:54,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189355599] [2021-05-22 01:59:54,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:54,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:54,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:54,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:54,380 INFO L87 Difference]: Start difference. First operand 5187 states and 24619 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:54,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:54,489 INFO L93 Difference]: Finished difference Result 10792 states and 48195 transitions. [2021-05-22 01:59:54,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:54,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:54,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:54,515 INFO L225 Difference]: With dead ends: 10792 [2021-05-22 01:59:54,515 INFO L226 Difference]: Without dead ends: 10267 [2021-05-22 01:59:54,515 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:54,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10267 states. [2021-05-22 01:59:54,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10267 to 5139. [2021-05-22 01:59:54,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.7541845075905025) internal successors, (24427), 5138 states have internal predecessors, (24427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:54,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24427 transitions. [2021-05-22 01:59:54,737 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24427 transitions. Word has length 29 [2021-05-22 01:59:54,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:54,737 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24427 transitions. [2021-05-22 01:59:54,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:54,737 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24427 transitions. [2021-05-22 01:59:54,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:54,745 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:54,745 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:54,745 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-05-22 01:59:54,745 INFO L430 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:54,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:54,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1939958923, now seen corresponding path program 315 times [2021-05-22 01:59:54,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:54,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59239296] [2021-05-22 01:59:54,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:54,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:54,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:54,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59239296] [2021-05-22 01:59:54,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59239296] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:54,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:54,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:54,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810971034] [2021-05-22 01:59:54,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:54,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:54,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:54,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:54,856 INFO L87 Difference]: Start difference. First operand 5139 states and 24427 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:54,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:54,959 INFO L93 Difference]: Finished difference Result 10652 states and 47609 transitions. [2021-05-22 01:59:54,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:54,959 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:54,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:54,984 INFO L225 Difference]: With dead ends: 10652 [2021-05-22 01:59:54,985 INFO L226 Difference]: Without dead ends: 10237 [2021-05-22 01:59:54,985 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:55,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10237 states. [2021-05-22 01:59:55,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10237 to 5171. [2021-05-22 01:59:55,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.74642166344294) internal successors, (24539), 5170 states have internal predecessors, (24539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:55,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24539 transitions. [2021-05-22 01:59:55,211 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24539 transitions. Word has length 29 [2021-05-22 01:59:55,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:55,211 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24539 transitions. [2021-05-22 01:59:55,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:55,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24539 transitions. [2021-05-22 01:59:55,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:55,220 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:55,220 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:55,220 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-05-22 01:59:55,220 INFO L430 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:55,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:55,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1943600377, now seen corresponding path program 316 times [2021-05-22 01:59:55,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:55,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611033246] [2021-05-22 01:59:55,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:55,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:55,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611033246] [2021-05-22 01:59:55,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611033246] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:55,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:55,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:55,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215468922] [2021-05-22 01:59:55,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:55,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:55,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:55,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:55,337 INFO L87 Difference]: Start difference. First operand 5171 states and 24539 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:55,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:55,435 INFO L93 Difference]: Finished difference Result 10652 states and 47577 transitions. [2021-05-22 01:59:55,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:55,435 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:55,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:55,460 INFO L225 Difference]: With dead ends: 10652 [2021-05-22 01:59:55,460 INFO L226 Difference]: Without dead ends: 10205 [2021-05-22 01:59:55,460 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:55,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10205 states. [2021-05-22 01:59:55,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10205 to 5139. [2021-05-22 01:59:55,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.751070455430129) internal successors, (24411), 5138 states have internal predecessors, (24411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:55,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24411 transitions. [2021-05-22 01:59:55,683 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24411 transitions. Word has length 29 [2021-05-22 01:59:55,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:55,684 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24411 transitions. [2021-05-22 01:59:55,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24411 transitions. [2021-05-22 01:59:55,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:55,692 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:55,692 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:55,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-05-22 01:59:55,692 INFO L430 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:55,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:55,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1807904889, now seen corresponding path program 317 times [2021-05-22 01:59:55,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:55,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768074718] [2021-05-22 01:59:55,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:55,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:55,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:55,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:55,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768074718] [2021-05-22 01:59:55,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768074718] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:55,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:55,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:55,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617335337] [2021-05-22 01:59:55,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:55,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:55,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:55,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:55,803 INFO L87 Difference]: Start difference. First operand 5139 states and 24411 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:55,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:55,909 INFO L93 Difference]: Finished difference Result 10792 states and 48211 transitions. [2021-05-22 01:59:55,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:55,910 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:55,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:55,935 INFO L225 Difference]: With dead ends: 10792 [2021-05-22 01:59:55,935 INFO L226 Difference]: Without dead ends: 10315 [2021-05-22 01:59:55,935 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:56,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10315 states. [2021-05-22 01:59:56,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10315 to 5187. [2021-05-22 01:59:56,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.74103355187042) internal successors, (24587), 5186 states have internal predecessors, (24587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:56,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24587 transitions. [2021-05-22 01:59:56,159 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24587 transitions. Word has length 29 [2021-05-22 01:59:56,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:56,159 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24587 transitions. [2021-05-22 01:59:56,159 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:56,159 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24587 transitions. [2021-05-22 01:59:56,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:56,168 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:56,168 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:56,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-05-22 01:59:56,168 INFO L430 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:56,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:56,168 INFO L82 PathProgramCache]: Analyzing trace with hash -726842263, now seen corresponding path program 318 times [2021-05-22 01:59:56,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:56,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818068157] [2021-05-22 01:59:56,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:56,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:56,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:56,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818068157] [2021-05-22 01:59:56,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818068157] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:56,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:56,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:56,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628636242] [2021-05-22 01:59:56,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:56,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:56,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:56,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:56,280 INFO L87 Difference]: Start difference. First operand 5187 states and 24587 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:56,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:56,369 INFO L93 Difference]: Finished difference Result 10730 states and 47894 transitions. [2021-05-22 01:59:56,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:56,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:56,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:56,395 INFO L225 Difference]: With dead ends: 10730 [2021-05-22 01:59:56,395 INFO L226 Difference]: Without dead ends: 10251 [2021-05-22 01:59:56,395 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:56,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10251 states. [2021-05-22 01:59:56,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10251 to 5123. [2021-05-22 01:59:56,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5123 states, 5122 states have (on average 4.754978524014057) internal successors, (24355), 5122 states have internal predecessors, (24355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:56,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 24355 transitions. [2021-05-22 01:59:56,628 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 24355 transitions. Word has length 29 [2021-05-22 01:59:56,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:56,628 INFO L482 AbstractCegarLoop]: Abstraction has 5123 states and 24355 transitions. [2021-05-22 01:59:56,628 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 24355 transitions. [2021-05-22 01:59:56,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:56,637 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:56,637 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:56,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-05-22 01:59:56,637 INFO L430 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:56,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:56,638 INFO L82 PathProgramCache]: Analyzing trace with hash -472988789, now seen corresponding path program 319 times [2021-05-22 01:59:56,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:56,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759637565] [2021-05-22 01:59:56,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:56,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:56,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759637565] [2021-05-22 01:59:56,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759637565] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:56,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:56,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:56,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784180993] [2021-05-22 01:59:56,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:56,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:56,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:56,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:56,742 INFO L87 Difference]: Start difference. First operand 5123 states and 24355 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:56,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:56,859 INFO L93 Difference]: Finished difference Result 10838 states and 48482 transitions. [2021-05-22 01:59:56,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:56,859 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:56,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:56,885 INFO L225 Difference]: With dead ends: 10838 [2021-05-22 01:59:56,885 INFO L226 Difference]: Without dead ends: 10423 [2021-05-22 01:59:56,885 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:57,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10423 states. [2021-05-22 01:59:57,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10423 to 5195. [2021-05-22 01:59:57,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.7468232576049285) internal successors, (24655), 5194 states have internal predecessors, (24655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:57,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24655 transitions. [2021-05-22 01:59:57,111 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24655 transitions. Word has length 29 [2021-05-22 01:59:57,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:57,111 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24655 transitions. [2021-05-22 01:59:57,111 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:57,112 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24655 transitions. [2021-05-22 01:59:57,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:57,120 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:57,120 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:57,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-05-22 01:59:57,120 INFO L430 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:57,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:57,120 INFO L82 PathProgramCache]: Analyzing trace with hash 243674157, now seen corresponding path program 320 times [2021-05-22 01:59:57,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:57,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462701878] [2021-05-22 01:59:57,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:57,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:57,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:57,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462701878] [2021-05-22 01:59:57,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462701878] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:57,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:57,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:57,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63679108] [2021-05-22 01:59:57,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:57,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:57,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:57,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:57,224 INFO L87 Difference]: Start difference. First operand 5195 states and 24655 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:57,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:57,335 INFO L93 Difference]: Finished difference Result 10900 states and 48703 transitions. [2021-05-22 01:59:57,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:57,335 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:57,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:57,361 INFO L225 Difference]: With dead ends: 10900 [2021-05-22 01:59:57,361 INFO L226 Difference]: Without dead ends: 10375 [2021-05-22 01:59:57,361 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:57,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10375 states. [2021-05-22 01:59:57,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10375 to 5147. [2021-05-22 01:59:57,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5147 states, 5146 states have (on average 4.752234745433347) internal successors, (24455), 5146 states have internal predecessors, (24455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:57,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5147 states to 5147 states and 24455 transitions. [2021-05-22 01:59:57,589 INFO L78 Accepts]: Start accepts. Automaton has 5147 states and 24455 transitions. Word has length 29 [2021-05-22 01:59:57,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:57,589 INFO L482 AbstractCegarLoop]: Abstraction has 5147 states and 24455 transitions. [2021-05-22 01:59:57,589 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:57,589 INFO L276 IsEmpty]: Start isEmpty. Operand 5147 states and 24455 transitions. [2021-05-22 01:59:57,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:57,597 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:57,597 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:57,598 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-05-22 01:59:57,598 INFO L430 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:57,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:57,598 INFO L82 PathProgramCache]: Analyzing trace with hash -83027061, now seen corresponding path program 321 times [2021-05-22 01:59:57,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:57,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019465940] [2021-05-22 01:59:57,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:57,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:57,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:57,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019465940] [2021-05-22 01:59:57,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019465940] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:57,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:57,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:57,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936971838] [2021-05-22 01:59:57,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:57,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:57,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:57,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:57,693 INFO L87 Difference]: Start difference. First operand 5147 states and 24455 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:57,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:57,803 INFO L93 Difference]: Finished difference Result 10832 states and 48441 transitions. [2021-05-22 01:59:57,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:57,803 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:57,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:57,830 INFO L225 Difference]: With dead ends: 10832 [2021-05-22 01:59:57,830 INFO L226 Difference]: Without dead ends: 10417 [2021-05-22 01:59:57,830 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:57,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10417 states. [2021-05-22 01:59:58,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10417 to 5195. [2021-05-22 01:59:58,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.742202541393916) internal successors, (24631), 5194 states have internal predecessors, (24631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:58,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24631 transitions. [2021-05-22 01:59:58,056 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24631 transitions. Word has length 29 [2021-05-22 01:59:58,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:58,056 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24631 transitions. [2021-05-22 01:59:58,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:58,056 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24631 transitions. [2021-05-22 01:59:58,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:58,065 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:58,065 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:58,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-05-22 01:59:58,065 INFO L430 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:58,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:58,065 INFO L82 PathProgramCache]: Analyzing trace with hash -938416309, now seen corresponding path program 322 times [2021-05-22 01:59:58,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:58,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137936429] [2021-05-22 01:59:58,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:58,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:58,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:58,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137936429] [2021-05-22 01:59:58,157 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137936429] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:58,157 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:58,157 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:58,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798789492] [2021-05-22 01:59:58,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:58,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:58,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:58,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:58,157 INFO L87 Difference]: Start difference. First operand 5195 states and 24631 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:58,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:58,273 INFO L93 Difference]: Finished difference Result 10888 states and 48645 transitions. [2021-05-22 01:59:58,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:58,273 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:58,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:58,299 INFO L225 Difference]: With dead ends: 10888 [2021-05-22 01:59:58,300 INFO L226 Difference]: Without dead ends: 10369 [2021-05-22 01:59:58,300 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:58,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10369 states. [2021-05-22 01:59:58,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10369 to 5147. [2021-05-22 01:59:58,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5147 states, 5146 states have (on average 4.747570928876797) internal successors, (24431), 5146 states have internal predecessors, (24431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:58,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5147 states to 5147 states and 24431 transitions. [2021-05-22 01:59:58,527 INFO L78 Accepts]: Start accepts. Automaton has 5147 states and 24431 transitions. Word has length 29 [2021-05-22 01:59:58,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:58,528 INFO L482 AbstractCegarLoop]: Abstraction has 5147 states and 24431 transitions. [2021-05-22 01:59:58,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:58,528 INFO L276 IsEmpty]: Start isEmpty. Operand 5147 states and 24431 transitions. [2021-05-22 01:59:58,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:58,536 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:58,536 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:58,537 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-05-22 01:59:58,537 INFO L430 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:58,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:58,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1436688531, now seen corresponding path program 323 times [2021-05-22 01:59:58,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:58,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439403577] [2021-05-22 01:59:58,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:58,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:58,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439403577] [2021-05-22 01:59:58,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439403577] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:58,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:58,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:58,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83945532] [2021-05-22 01:59:58,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:58,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:58,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:58,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:58,629 INFO L87 Difference]: Start difference. First operand 5147 states and 24431 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:58,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:58,733 INFO L93 Difference]: Finished difference Result 10984 states and 49095 transitions. [2021-05-22 01:59:58,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:58,733 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:58,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:58,759 INFO L225 Difference]: With dead ends: 10984 [2021-05-22 01:59:58,759 INFO L226 Difference]: Without dead ends: 10507 [2021-05-22 01:59:58,759 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:58,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10507 states. [2021-05-22 01:59:58,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10507 to 5223. [2021-05-22 01:59:58,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5223 states, 5222 states have (on average 4.733626962849483) internal successors, (24719), 5222 states have internal predecessors, (24719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:58,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5223 states to 5223 states and 24719 transitions. [2021-05-22 01:59:58,984 INFO L78 Accepts]: Start accepts. Automaton has 5223 states and 24719 transitions. Word has length 29 [2021-05-22 01:59:58,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:58,984 INFO L482 AbstractCegarLoop]: Abstraction has 5223 states and 24719 transitions. [2021-05-22 01:59:58,984 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:58,984 INFO L276 IsEmpty]: Start isEmpty. Operand 5223 states and 24719 transitions. [2021-05-22 01:59:58,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:58,992 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:58,992 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:58,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-05-22 01:59:58,993 INFO L430 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:58,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:58,993 INFO L82 PathProgramCache]: Analyzing trace with hash 2117326667, now seen corresponding path program 324 times [2021-05-22 01:59:58,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:58,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875823934] [2021-05-22 01:59:58,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:59,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:59,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875823934] [2021-05-22 01:59:59,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875823934] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:59,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:59,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:59,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506055301] [2021-05-22 01:59:59,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:59,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:59,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:59,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:59,085 INFO L87 Difference]: Start difference. First operand 5223 states and 24719 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:59,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:59,196 INFO L93 Difference]: Finished difference Result 10978 states and 49002 transitions. [2021-05-22 01:59:59,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:59,197 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:59,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:59,223 INFO L225 Difference]: With dead ends: 10978 [2021-05-22 01:59:59,223 INFO L226 Difference]: Without dead ends: 10407 [2021-05-22 01:59:59,223 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:59,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10407 states. [2021-05-22 01:59:59,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10407 to 5123. [2021-05-22 01:59:59,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5123 states, 5122 states have (on average 4.753416634127294) internal successors, (24347), 5122 states have internal predecessors, (24347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 24347 transitions. [2021-05-22 01:59:59,445 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 24347 transitions. Word has length 29 [2021-05-22 01:59:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:59,445 INFO L482 AbstractCegarLoop]: Abstraction has 5123 states and 24347 transitions. [2021-05-22 01:59:59,445 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:59,445 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 24347 transitions. [2021-05-22 01:59:59,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:59,453 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:59,453 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:59,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-05-22 01:59:59,453 INFO L430 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:59,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:59,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1262375059, now seen corresponding path program 325 times [2021-05-22 01:59:59,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:59,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323962518] [2021-05-22 01:59:59,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 01:59:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 01:59:59,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 01:59:59,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323962518] [2021-05-22 01:59:59,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323962518] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 01:59:59,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 01:59:59,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 01:59:59,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428887468] [2021-05-22 01:59:59,556 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 01:59:59,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 01:59:59,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 01:59:59,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 01:59:59,557 INFO L87 Difference]: Start difference. First operand 5123 states and 24347 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:59,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 01:59:59,678 INFO L93 Difference]: Finished difference Result 10646 states and 47592 transitions. [2021-05-22 01:59:59,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 01:59:59,679 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 01:59:59,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 01:59:59,704 INFO L225 Difference]: With dead ends: 10646 [2021-05-22 01:59:59,704 INFO L226 Difference]: Without dead ends: 10231 [2021-05-22 01:59:59,704 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 01:59:59,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10231 states. [2021-05-22 01:59:59,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10231 to 5171. [2021-05-22 01:59:59,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.74642166344294) internal successors, (24539), 5170 states have internal predecessors, (24539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24539 transitions. [2021-05-22 01:59:59,926 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24539 transitions. Word has length 29 [2021-05-22 01:59:59,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 01:59:59,926 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24539 transitions. [2021-05-22 01:59:59,926 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 01:59:59,926 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24539 transitions. [2021-05-22 01:59:59,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 01:59:59,934 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 01:59:59,934 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 01:59:59,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-05-22 01:59:59,934 INFO L430 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 01:59:59,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 01:59:59,935 INFO L82 PathProgramCache]: Analyzing trace with hash -850967063, now seen corresponding path program 326 times [2021-05-22 01:59:59,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 01:59:59,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369009626] [2021-05-22 01:59:59,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 01:59:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:00,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:00,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:00,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369009626] [2021-05-22 02:00:00,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369009626] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:00,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:00,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:00,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405162232] [2021-05-22 02:00:00,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:00,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:00,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:00,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:00,032 INFO L87 Difference]: Start difference. First operand 5171 states and 24539 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:00,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:00,137 INFO L93 Difference]: Finished difference Result 10646 states and 47560 transitions. [2021-05-22 02:00:00,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:00,138 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:00,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:00,164 INFO L225 Difference]: With dead ends: 10646 [2021-05-22 02:00:00,164 INFO L226 Difference]: Without dead ends: 10199 [2021-05-22 02:00:00,164 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 102.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:00,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10199 states. [2021-05-22 02:00:00,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10199 to 5139. [2021-05-22 02:00:00,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.751070455430129) internal successors, (24411), 5138 states have internal predecessors, (24411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:00,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24411 transitions. [2021-05-22 02:00:00,388 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24411 transitions. Word has length 29 [2021-05-22 02:00:00,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:00,388 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24411 transitions. [2021-05-22 02:00:00,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:00,388 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24411 transitions. [2021-05-22 02:00:00,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:00,396 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:00,396 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:00,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-05-22 02:00:00,397 INFO L430 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:00,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:00,397 INFO L82 PathProgramCache]: Analyzing trace with hash 999579595, now seen corresponding path program 327 times [2021-05-22 02:00:00,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:00,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118008926] [2021-05-22 02:00:00,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:00,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:00,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:00,494 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118008926] [2021-05-22 02:00:00,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118008926] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:00,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:00,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:00,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573142930] [2021-05-22 02:00:00,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:00,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:00,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:00,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:00,495 INFO L87 Difference]: Start difference. First operand 5139 states and 24411 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:00,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:00,615 INFO L93 Difference]: Finished difference Result 10718 states and 47908 transitions. [2021-05-22 02:00:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:00,616 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:00,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:00,642 INFO L225 Difference]: With dead ends: 10718 [2021-05-22 02:00:00,642 INFO L226 Difference]: Without dead ends: 10303 [2021-05-22 02:00:00,642 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:00,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10303 states. [2021-05-22 02:00:00,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10303 to 5187. [2021-05-22 02:00:00,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.74103355187042) internal successors, (24587), 5186 states have internal predecessors, (24587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:00,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24587 transitions. [2021-05-22 02:00:00,870 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24587 transitions. Word has length 29 [2021-05-22 02:00:00,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:00,870 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24587 transitions. [2021-05-22 02:00:00,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:00,870 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24587 transitions. [2021-05-22 02:00:00,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:00,879 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:00,879 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:00,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-05-22 02:00:00,879 INFO L430 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:00,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:00,879 INFO L82 PathProgramCache]: Analyzing trace with hash 771185453, now seen corresponding path program 328 times [2021-05-22 02:00:00,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:00,879 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915038746] [2021-05-22 02:00:00,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:00,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:00,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:00,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915038746] [2021-05-22 02:00:00,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915038746] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:00,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:00,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:00,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175660936] [2021-05-22 02:00:00,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:00,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:00,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:00,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:00,978 INFO L87 Difference]: Start difference. First operand 5187 states and 24587 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:01,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:01,082 INFO L93 Difference]: Finished difference Result 10774 states and 48112 transitions. [2021-05-22 02:00:01,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:01,082 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:01,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:01,108 INFO L225 Difference]: With dead ends: 10774 [2021-05-22 02:00:01,108 INFO L226 Difference]: Without dead ends: 10255 [2021-05-22 02:00:01,108 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:01,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10255 states. [2021-05-22 02:00:01,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10255 to 5139. [2021-05-22 02:00:01,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.747956403269755) internal successors, (24395), 5138 states have internal predecessors, (24395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:01,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24395 transitions. [2021-05-22 02:00:01,342 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24395 transitions. Word has length 29 [2021-05-22 02:00:01,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:01,342 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24395 transitions. [2021-05-22 02:00:01,342 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:01,342 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24395 transitions. [2021-05-22 02:00:01,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:01,351 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:01,351 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:01,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-05-22 02:00:01,351 INFO L430 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:01,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:01,351 INFO L82 PathProgramCache]: Analyzing trace with hash -696975481, now seen corresponding path program 329 times [2021-05-22 02:00:01,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:01,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251602498] [2021-05-22 02:00:01,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:01,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:01,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251602498] [2021-05-22 02:00:01,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251602498] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:01,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:01,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:01,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550436354] [2021-05-22 02:00:01,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:01,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:01,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:01,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:01,459 INFO L87 Difference]: Start difference. First operand 5139 states and 24395 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:01,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:01,559 INFO L93 Difference]: Finished difference Result 10718 states and 47892 transitions. [2021-05-22 02:00:01,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:01,559 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:01,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:01,587 INFO L225 Difference]: With dead ends: 10718 [2021-05-22 02:00:01,587 INFO L226 Difference]: Without dead ends: 10303 [2021-05-22 02:00:01,587 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:01,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10303 states. [2021-05-22 02:00:01,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10303 to 5187. [2021-05-22 02:00:01,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.737948322406479) internal successors, (24571), 5186 states have internal predecessors, (24571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:01,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24571 transitions. [2021-05-22 02:00:01,818 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24571 transitions. Word has length 29 [2021-05-22 02:00:01,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:01,818 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24571 transitions. [2021-05-22 02:00:01,818 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:01,818 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24571 transitions. [2021-05-22 02:00:01,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:01,826 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:01,826 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:01,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-05-22 02:00:01,827 INFO L430 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:01,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:01,827 INFO L82 PathProgramCache]: Analyzing trace with hash -903783447, now seen corresponding path program 330 times [2021-05-22 02:00:01,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:01,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619349627] [2021-05-22 02:00:01,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:01,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:01,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619349627] [2021-05-22 02:00:01,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619349627] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:01,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:01,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:01,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329699338] [2021-05-22 02:00:01,935 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:01,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:01,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:01,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:01,935 INFO L87 Difference]: Start difference. First operand 5187 states and 24571 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:02,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:02,083 INFO L93 Difference]: Finished difference Result 10774 states and 48096 transitions. [2021-05-22 02:00:02,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:02,084 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:02,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:02,118 INFO L225 Difference]: With dead ends: 10774 [2021-05-22 02:00:02,118 INFO L226 Difference]: Without dead ends: 10239 [2021-05-22 02:00:02,118 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:02,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10239 states. [2021-05-22 02:00:02,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10239 to 5123. [2021-05-22 02:00:02,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5123 states, 5122 states have (on average 4.751854744240531) internal successors, (24339), 5122 states have internal predecessors, (24339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:02,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 24339 transitions. [2021-05-22 02:00:02,370 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 24339 transitions. Word has length 29 [2021-05-22 02:00:02,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:02,370 INFO L482 AbstractCegarLoop]: Abstraction has 5123 states and 24339 transitions. [2021-05-22 02:00:02,370 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:02,370 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 24339 transitions. [2021-05-22 02:00:02,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:02,378 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:02,378 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:02,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-05-22 02:00:02,379 INFO L430 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:02,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:02,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1123761159, now seen corresponding path program 331 times [2021-05-22 02:00:02,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:02,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187745884] [2021-05-22 02:00:02,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:02,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:02,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:02,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187745884] [2021-05-22 02:00:02,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187745884] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:02,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:02,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:02,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204944393] [2021-05-22 02:00:02,491 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:02,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:02,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:02,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:02,491 INFO L87 Difference]: Start difference. First operand 5123 states and 24339 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:02,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:02,638 INFO L93 Difference]: Finished difference Result 10900 states and 48735 transitions. [2021-05-22 02:00:02,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:02,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:02,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:02,665 INFO L225 Difference]: With dead ends: 10900 [2021-05-22 02:00:02,665 INFO L226 Difference]: Without dead ends: 10423 [2021-05-22 02:00:02,665 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:02,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10423 states. [2021-05-22 02:00:02,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10423 to 5195. [2021-05-22 02:00:02,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.74374278013092) internal successors, (24639), 5194 states have internal predecessors, (24639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:02,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24639 transitions. [2021-05-22 02:00:02,904 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24639 transitions. Word has length 29 [2021-05-22 02:00:02,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:02,904 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24639 transitions. [2021-05-22 02:00:02,904 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:02,904 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24639 transitions. [2021-05-22 02:00:02,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:02,913 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:02,913 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:02,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-05-22 02:00:02,913 INFO L430 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:02,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:02,913 INFO L82 PathProgramCache]: Analyzing trace with hash -2090143511, now seen corresponding path program 332 times [2021-05-22 02:00:02,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:02,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250606664] [2021-05-22 02:00:02,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:03,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:03,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250606664] [2021-05-22 02:00:03,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250606664] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:03,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:03,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:03,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705686647] [2021-05-22 02:00:03,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:03,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:03,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:03,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:03,024 INFO L87 Difference]: Start difference. First operand 5195 states and 24639 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:03,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:03,116 INFO L93 Difference]: Finished difference Result 10838 states and 48418 transitions. [2021-05-22 02:00:03,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:03,117 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:03,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:03,144 INFO L225 Difference]: With dead ends: 10838 [2021-05-22 02:00:03,144 INFO L226 Difference]: Without dead ends: 10375 [2021-05-22 02:00:03,144 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:03,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10375 states. [2021-05-22 02:00:03,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10375 to 5147. [2021-05-22 02:00:03,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5147 states, 5146 states have (on average 4.749125534395647) internal successors, (24439), 5146 states have internal predecessors, (24439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:03,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5147 states to 5147 states and 24439 transitions. [2021-05-22 02:00:03,383 INFO L78 Accepts]: Start accepts. Automaton has 5147 states and 24439 transitions. Word has length 29 [2021-05-22 02:00:03,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:03,383 INFO L482 AbstractCegarLoop]: Abstraction has 5147 states and 24439 transitions. [2021-05-22 02:00:03,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:03,383 INFO L276 IsEmpty]: Start isEmpty. Operand 5147 states and 24439 transitions. [2021-05-22 02:00:03,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:03,392 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:03,392 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:03,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-05-22 02:00:03,392 INFO L430 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:03,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:03,392 INFO L82 PathProgramCache]: Analyzing trace with hash -50198551, now seen corresponding path program 333 times [2021-05-22 02:00:03,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:03,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515035931] [2021-05-22 02:00:03,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:03,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:03,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515035931] [2021-05-22 02:00:03,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515035931] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:03,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:03,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:03,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75007529] [2021-05-22 02:00:03,500 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:03,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:03,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:03,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:03,501 INFO L87 Difference]: Start difference. First operand 5147 states and 24439 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:03,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:03,613 INFO L93 Difference]: Finished difference Result 10984 states and 49103 transitions. [2021-05-22 02:00:03,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:03,614 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:03,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:03,643 INFO L225 Difference]: With dead ends: 10984 [2021-05-22 02:00:03,643 INFO L226 Difference]: Without dead ends: 10507 [2021-05-22 02:00:03,643 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:03,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10507 states. [2021-05-22 02:00:03,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10507 to 5223. [2021-05-22 02:00:03,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5223 states, 5222 states have (on average 4.735158942933742) internal successors, (24727), 5222 states have internal predecessors, (24727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:03,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5223 states to 5223 states and 24727 transitions. [2021-05-22 02:00:03,883 INFO L78 Accepts]: Start accepts. Automaton has 5223 states and 24727 transitions. Word has length 29 [2021-05-22 02:00:03,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:03,883 INFO L482 AbstractCegarLoop]: Abstraction has 5223 states and 24727 transitions. [2021-05-22 02:00:03,883 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:03,883 INFO L276 IsEmpty]: Start isEmpty. Operand 5223 states and 24727 transitions. [2021-05-22 02:00:03,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:03,892 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:03,892 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:03,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-05-22 02:00:03,892 INFO L430 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:03,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:03,892 INFO L82 PathProgramCache]: Analyzing trace with hash -630807, now seen corresponding path program 334 times [2021-05-22 02:00:03,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:03,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565940323] [2021-05-22 02:00:03,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:03,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:03,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:03,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565940323] [2021-05-22 02:00:03,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565940323] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:03,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:03,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:03,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432261830] [2021-05-22 02:00:03,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:03,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:03,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:03,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:03,998 INFO L87 Difference]: Start difference. First operand 5223 states and 24727 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:04,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:04,106 INFO L93 Difference]: Finished difference Result 10978 states and 49010 transitions. [2021-05-22 02:00:04,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:04,107 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:04,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:04,133 INFO L225 Difference]: With dead ends: 10978 [2021-05-22 02:00:04,133 INFO L226 Difference]: Without dead ends: 10431 [2021-05-22 02:00:04,133 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:04,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10431 states. [2021-05-22 02:00:04,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10431 to 5147. [2021-05-22 02:00:04,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5147 states, 5146 states have (on average 4.744461717839099) internal successors, (24415), 5146 states have internal predecessors, (24415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:04,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5147 states to 5147 states and 24415 transitions. [2021-05-22 02:00:04,371 INFO L78 Accepts]: Start accepts. Automaton has 5147 states and 24415 transitions. Word has length 29 [2021-05-22 02:00:04,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:04,371 INFO L482 AbstractCegarLoop]: Abstraction has 5147 states and 24415 transitions. [2021-05-22 02:00:04,371 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:04,371 INFO L276 IsEmpty]: Start isEmpty. Operand 5147 states and 24415 transitions. [2021-05-22 02:00:04,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:04,380 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:04,380 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:04,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-05-22 02:00:04,380 INFO L430 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:04,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:04,380 INFO L82 PathProgramCache]: Analyzing trace with hash 337806411, now seen corresponding path program 335 times [2021-05-22 02:00:04,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:04,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312611413] [2021-05-22 02:00:04,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:04,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:04,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:04,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312611413] [2021-05-22 02:00:04,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312611413] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:04,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:04,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:04,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758677315] [2021-05-22 02:00:04,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:04,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:04,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:04,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:04,494 INFO L87 Difference]: Start difference. First operand 5147 states and 24415 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:04,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:04,592 INFO L93 Difference]: Finished difference Result 10832 states and 48401 transitions. [2021-05-22 02:00:04,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:04,593 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:04,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:04,620 INFO L225 Difference]: With dead ends: 10832 [2021-05-22 02:00:04,620 INFO L226 Difference]: Without dead ends: 10417 [2021-05-22 02:00:04,620 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:04,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10417 states. [2021-05-22 02:00:04,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10417 to 5195. [2021-05-22 02:00:04,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.734501347708895) internal successors, (24591), 5194 states have internal predecessors, (24591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:04,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24591 transitions. [2021-05-22 02:00:04,857 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24591 transitions. Word has length 29 [2021-05-22 02:00:04,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:04,857 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24591 transitions. [2021-05-22 02:00:04,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:04,857 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24591 transitions. [2021-05-22 02:00:04,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:04,865 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:04,865 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:04,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-05-22 02:00:04,866 INFO L430 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:04,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:04,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1778273239, now seen corresponding path program 336 times [2021-05-22 02:00:04,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:04,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42959127] [2021-05-22 02:00:04,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:04,980 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:04,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42959127] [2021-05-22 02:00:04,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42959127] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:04,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:04,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:04,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19703793] [2021-05-22 02:00:04,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:04,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:04,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:04,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:04,981 INFO L87 Difference]: Start difference. First operand 5195 states and 24591 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:05,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:05,108 INFO L93 Difference]: Finished difference Result 10888 states and 48605 transitions. [2021-05-22 02:00:05,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:05,108 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:05,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:05,135 INFO L225 Difference]: With dead ends: 10888 [2021-05-22 02:00:05,136 INFO L226 Difference]: Without dead ends: 10337 [2021-05-22 02:00:05,136 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:05,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10337 states. [2021-05-22 02:00:05,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10337 to 5115. [2021-05-22 02:00:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 4.754595228783731) internal successors, (24315), 5114 states have internal predecessors, (24315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:05,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 24315 transitions. [2021-05-22 02:00:05,373 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 24315 transitions. Word has length 29 [2021-05-22 02:00:05,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:05,373 INFO L482 AbstractCegarLoop]: Abstraction has 5115 states and 24315 transitions. [2021-05-22 02:00:05,373 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:05,373 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 24315 transitions. [2021-05-22 02:00:05,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:05,382 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:05,382 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:05,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-05-22 02:00:05,382 INFO L430 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:05,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:05,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1951426331, now seen corresponding path program 337 times [2021-05-22 02:00:05,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:05,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146810979] [2021-05-22 02:00:05,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:05,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:05,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:05,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146810979] [2021-05-22 02:00:05,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146810979] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:05,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:05,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:05,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366859991] [2021-05-22 02:00:05,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:05,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:05,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:05,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:05,501 INFO L87 Difference]: Start difference. First operand 5115 states and 24315 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:05,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:05,600 INFO L93 Difference]: Finished difference Result 11849 states and 52853 transitions. [2021-05-22 02:00:05,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:05,600 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:05,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:05,630 INFO L225 Difference]: With dead ends: 11849 [2021-05-22 02:00:05,630 INFO L226 Difference]: Without dead ends: 11307 [2021-05-22 02:00:05,630 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:05,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11307 states. [2021-05-22 02:00:05,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11307 to 5342. [2021-05-22 02:00:05,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5342 states, 5341 states have (on average 4.72757910503651) internal successors, (25250), 5341 states have internal predecessors, (25250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:05,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 25250 transitions. [2021-05-22 02:00:05,877 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 25250 transitions. Word has length 29 [2021-05-22 02:00:05,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:05,877 INFO L482 AbstractCegarLoop]: Abstraction has 5342 states and 25250 transitions. [2021-05-22 02:00:05,877 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:05,877 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 25250 transitions. [2021-05-22 02:00:05,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:05,887 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:05,887 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:05,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-05-22 02:00:05,887 INFO L430 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:05,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:05,887 INFO L82 PathProgramCache]: Analyzing trace with hash -870363705, now seen corresponding path program 338 times [2021-05-22 02:00:05,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:05,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024734102] [2021-05-22 02:00:05,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:05,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:05,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:05,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024734102] [2021-05-22 02:00:05,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024734102] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:05,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:05,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:05,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119849876] [2021-05-22 02:00:05,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:05,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:05,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:05,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:05,995 INFO L87 Difference]: Start difference. First operand 5342 states and 25250 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:06,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:06,108 INFO L93 Difference]: Finished difference Result 11784 states and 52484 transitions. [2021-05-22 02:00:06,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:06,109 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:06,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:06,138 INFO L225 Difference]: With dead ends: 11784 [2021-05-22 02:00:06,138 INFO L226 Difference]: Without dead ends: 11164 [2021-05-22 02:00:06,138 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:06,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11164 states. [2021-05-22 02:00:06,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11164 to 5199. [2021-05-22 02:00:06,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 4.747018083878415) internal successors, (24675), 5198 states have internal predecessors, (24675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:06,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 24675 transitions. [2021-05-22 02:00:06,380 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 24675 transitions. Word has length 29 [2021-05-22 02:00:06,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:06,380 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 24675 transitions. [2021-05-22 02:00:06,380 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:06,380 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 24675 transitions. [2021-05-22 02:00:06,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:06,389 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:06,389 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:06,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-05-22 02:00:06,389 INFO L430 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:06,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:06,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1862638919, now seen corresponding path program 339 times [2021-05-22 02:00:06,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:06,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80801313] [2021-05-22 02:00:06,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:06,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:06,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80801313] [2021-05-22 02:00:06,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80801313] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:06,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:06,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:06,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162507880] [2021-05-22 02:00:06,505 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:06,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:06,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:06,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:06,506 INFO L87 Difference]: Start difference. First operand 5199 states and 24675 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:06,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:06,603 INFO L93 Difference]: Finished difference Result 11724 states and 52266 transitions. [2021-05-22 02:00:06,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:06,603 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:06,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:06,632 INFO L225 Difference]: With dead ends: 11724 [2021-05-22 02:00:06,632 INFO L226 Difference]: Without dead ends: 11182 [2021-05-22 02:00:06,632 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:06,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11182 states. [2021-05-22 02:00:06,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11182 to 5279. [2021-05-22 02:00:06,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5279 states, 5278 states have (on average 4.729632436528989) internal successors, (24963), 5278 states have internal predecessors, (24963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:06,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5279 states to 5279 states and 24963 transitions. [2021-05-22 02:00:06,952 INFO L78 Accepts]: Start accepts. Automaton has 5279 states and 24963 transitions. Word has length 29 [2021-05-22 02:00:06,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:06,952 INFO L482 AbstractCegarLoop]: Abstraction has 5279 states and 24963 transitions. [2021-05-22 02:00:06,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:06,952 INFO L276 IsEmpty]: Start isEmpty. Operand 5279 states and 24963 transitions. [2021-05-22 02:00:06,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:06,963 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:06,963 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:06,963 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-05-22 02:00:06,963 INFO L430 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:06,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:06,964 INFO L82 PathProgramCache]: Analyzing trace with hash 174392647, now seen corresponding path program 340 times [2021-05-22 02:00:06,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:06,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159792529] [2021-05-22 02:00:06,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:07,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:07,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:07,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159792529] [2021-05-22 02:00:07,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159792529] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:07,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:07,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:07,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770054097] [2021-05-22 02:00:07,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:07,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:07,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:07,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:07,128 INFO L87 Difference]: Start difference. First operand 5279 states and 24963 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:07,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:07,253 INFO L93 Difference]: Finished difference Result 11597 states and 51659 transitions. [2021-05-22 02:00:07,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:07,254 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:07,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:07,289 INFO L225 Difference]: With dead ends: 11597 [2021-05-22 02:00:07,289 INFO L226 Difference]: Without dead ends: 11102 [2021-05-22 02:00:07,290 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 169.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:07,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11102 states. [2021-05-22 02:00:07,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11102 to 5199. [2021-05-22 02:00:07,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 4.7393228164678725) internal successors, (24635), 5198 states have internal predecessors, (24635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:07,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 24635 transitions. [2021-05-22 02:00:07,610 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 24635 transitions. Word has length 29 [2021-05-22 02:00:07,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:07,610 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 24635 transitions. [2021-05-22 02:00:07,610 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:07,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 24635 transitions. [2021-05-22 02:00:07,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:07,621 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:07,621 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:07,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-05-22 02:00:07,621 INFO L430 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:07,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:07,622 INFO L82 PathProgramCache]: Analyzing trace with hash -2044323415, now seen corresponding path program 341 times [2021-05-22 02:00:07,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:07,622 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108090106] [2021-05-22 02:00:07,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:07,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:07,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108090106] [2021-05-22 02:00:07,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108090106] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:07,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:07,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:07,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671110283] [2021-05-22 02:00:07,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:07,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:07,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:07,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:07,815 INFO L87 Difference]: Start difference. First operand 5199 states and 24635 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:07,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:07,923 INFO L93 Difference]: Finished difference Result 11562 states and 51566 transitions. [2021-05-22 02:00:07,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:07,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:07,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:07,953 INFO L225 Difference]: With dead ends: 11562 [2021-05-22 02:00:07,954 INFO L226 Difference]: Without dead ends: 11085 [2021-05-22 02:00:07,954 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 194.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:08,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11085 states. [2021-05-22 02:00:08,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11085 to 5247. [2021-05-22 02:00:08,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 5246 states have (on average 4.729508196721311) internal successors, (24811), 5246 states have internal predecessors, (24811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:08,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 24811 transitions. [2021-05-22 02:00:08,194 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 24811 transitions. Word has length 29 [2021-05-22 02:00:08,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:08,194 INFO L482 AbstractCegarLoop]: Abstraction has 5247 states and 24811 transitions. [2021-05-22 02:00:08,194 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:08,194 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 24811 transitions. [2021-05-22 02:00:08,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:08,203 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:08,203 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:08,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-05-22 02:00:08,203 INFO L430 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:08,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:08,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1403846919, now seen corresponding path program 342 times [2021-05-22 02:00:08,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:08,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133487793] [2021-05-22 02:00:08,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:08,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:08,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:08,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133487793] [2021-05-22 02:00:08,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133487793] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:08,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:08,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:08,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117401983] [2021-05-22 02:00:08,324 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:08,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:08,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:08,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:08,324 INFO L87 Difference]: Start difference. First operand 5247 states and 24811 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:08,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:08,417 INFO L93 Difference]: Finished difference Result 11500 states and 51249 transitions. [2021-05-22 02:00:08,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:08,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:08,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:08,446 INFO L225 Difference]: With dead ends: 11500 [2021-05-22 02:00:08,446 INFO L226 Difference]: Without dead ends: 10981 [2021-05-22 02:00:08,447 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:08,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10981 states. [2021-05-22 02:00:08,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10981 to 5143. [2021-05-22 02:00:08,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.752042007001167) internal successors, (24435), 5142 states have internal predecessors, (24435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:08,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24435 transitions. [2021-05-22 02:00:08,680 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24435 transitions. Word has length 29 [2021-05-22 02:00:08,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:08,681 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24435 transitions. [2021-05-22 02:00:08,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:08,681 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24435 transitions. [2021-05-22 02:00:08,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:08,689 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:08,689 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:08,689 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-05-22 02:00:08,689 INFO L430 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:08,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:08,690 INFO L82 PathProgramCache]: Analyzing trace with hash -550308793, now seen corresponding path program 343 times [2021-05-22 02:00:08,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:08,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856464026] [2021-05-22 02:00:08,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:08,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:08,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856464026] [2021-05-22 02:00:08,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856464026] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:08,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:08,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:08,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15825264] [2021-05-22 02:00:08,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:08,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:08,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:08,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:08,803 INFO L87 Difference]: Start difference. First operand 5143 states and 24435 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:08,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:08,903 INFO L93 Difference]: Finished difference Result 11975 states and 53434 transitions. [2021-05-22 02:00:08,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:08,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:08,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:08,933 INFO L225 Difference]: With dead ends: 11975 [2021-05-22 02:00:08,933 INFO L226 Difference]: Without dead ends: 11433 [2021-05-22 02:00:08,933 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:09,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11433 states. [2021-05-22 02:00:09,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11433 to 5356. [2021-05-22 02:00:09,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5356 states, 5355 states have (on average 4.72436974789916) internal successors, (25299), 5355 states have internal predecessors, (25299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:09,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5356 states to 5356 states and 25299 transitions. [2021-05-22 02:00:09,175 INFO L78 Accepts]: Start accepts. Automaton has 5356 states and 25299 transitions. Word has length 29 [2021-05-22 02:00:09,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:09,175 INFO L482 AbstractCegarLoop]: Abstraction has 5356 states and 25299 transitions. [2021-05-22 02:00:09,175 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:09,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5356 states and 25299 transitions. [2021-05-22 02:00:09,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:09,184 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:09,185 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:09,185 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-05-22 02:00:09,185 INFO L430 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:09,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:09,185 INFO L82 PathProgramCache]: Analyzing trace with hash 530753833, now seen corresponding path program 344 times [2021-05-22 02:00:09,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:09,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554907656] [2021-05-22 02:00:09,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:09,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:09,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554907656] [2021-05-22 02:00:09,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554907656] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:09,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:09,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:09,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480287065] [2021-05-22 02:00:09,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:09,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:09,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:09,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:09,288 INFO L87 Difference]: Start difference. First operand 5356 states and 25299 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:09,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:09,396 INFO L93 Difference]: Finished difference Result 11910 states and 53065 transitions. [2021-05-22 02:00:09,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:09,396 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:09,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:09,425 INFO L225 Difference]: With dead ends: 11910 [2021-05-22 02:00:09,425 INFO L226 Difference]: Without dead ends: 11290 [2021-05-22 02:00:09,425 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:09,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11290 states. [2021-05-22 02:00:09,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11290 to 5213. [2021-05-22 02:00:09,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 5212 states have (on average 4.740982348426708) internal successors, (24710), 5212 states have internal predecessors, (24710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:09,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 24710 transitions. [2021-05-22 02:00:09,662 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 24710 transitions. Word has length 29 [2021-05-22 02:00:09,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:09,662 INFO L482 AbstractCegarLoop]: Abstraction has 5213 states and 24710 transitions. [2021-05-22 02:00:09,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:09,662 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 24710 transitions. [2021-05-22 02:00:09,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:09,671 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:09,671 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:09,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-05-22 02:00:09,671 INFO L430 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:09,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:09,671 INFO L82 PathProgramCache]: Analyzing trace with hash -160347065, now seen corresponding path program 345 times [2021-05-22 02:00:09,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:09,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334140162] [2021-05-22 02:00:09,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:09,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:09,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334140162] [2021-05-22 02:00:09,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334140162] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:09,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:09,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:09,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108375196] [2021-05-22 02:00:09,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:09,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:09,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:09,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:09,785 INFO L87 Difference]: Start difference. First operand 5213 states and 24710 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:09,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:09,887 INFO L93 Difference]: Finished difference Result 11934 states and 53225 transitions. [2021-05-22 02:00:09,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:09,887 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:09,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:09,916 INFO L225 Difference]: With dead ends: 11934 [2021-05-22 02:00:09,916 INFO L226 Difference]: Without dead ends: 11392 [2021-05-22 02:00:09,916 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:10,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11392 states. [2021-05-22 02:00:10,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11392 to 5321. [2021-05-22 02:00:10,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5321 states, 5320 states have (on average 4.719924812030075) internal successors, (25110), 5320 states have internal predecessors, (25110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:10,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5321 states to 5321 states and 25110 transitions. [2021-05-22 02:00:10,168 INFO L78 Accepts]: Start accepts. Automaton has 5321 states and 25110 transitions. Word has length 29 [2021-05-22 02:00:10,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:10,168 INFO L482 AbstractCegarLoop]: Abstraction has 5321 states and 25110 transitions. [2021-05-22 02:00:10,168 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:10,168 INFO L276 IsEmpty]: Start isEmpty. Operand 5321 states and 25110 transitions. [2021-05-22 02:00:10,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:10,177 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:10,177 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:10,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-05-22 02:00:10,177 INFO L430 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:10,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:10,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1627034695, now seen corresponding path program 346 times [2021-05-22 02:00:10,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:10,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900272997] [2021-05-22 02:00:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:10,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:10,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900272997] [2021-05-22 02:00:10,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900272997] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:10,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:10,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:10,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464338828] [2021-05-22 02:00:10,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:10,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:10,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:10,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:10,292 INFO L87 Difference]: Start difference. First operand 5321 states and 25110 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:10,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:10,407 INFO L93 Difference]: Finished difference Result 11863 states and 52842 transitions. [2021-05-22 02:00:10,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:10,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:10,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:10,438 INFO L225 Difference]: With dead ends: 11863 [2021-05-22 02:00:10,438 INFO L226 Difference]: Without dead ends: 11284 [2021-05-22 02:00:10,438 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:10,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11284 states. [2021-05-22 02:00:10,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11284 to 5213. [2021-05-22 02:00:10,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 5212 states have (on average 4.730621642363776) internal successors, (24656), 5212 states have internal predecessors, (24656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:10,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 24656 transitions. [2021-05-22 02:00:10,695 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 24656 transitions. Word has length 29 [2021-05-22 02:00:10,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:10,695 INFO L482 AbstractCegarLoop]: Abstraction has 5213 states and 24656 transitions. [2021-05-22 02:00:10,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:10,696 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 24656 transitions. [2021-05-22 02:00:10,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:10,705 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:10,705 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:10,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-05-22 02:00:10,705 INFO L430 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:10,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:10,706 INFO L82 PathProgramCache]: Analyzing trace with hash 227657897, now seen corresponding path program 347 times [2021-05-22 02:00:10,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:10,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559215369] [2021-05-22 02:00:10,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:10,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:10,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559215369] [2021-05-22 02:00:10,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559215369] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:10,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:10,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:10,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349246610] [2021-05-22 02:00:10,809 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:10,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:10,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:10,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:10,809 INFO L87 Difference]: Start difference. First operand 5213 states and 24656 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:10,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:10,923 INFO L93 Difference]: Finished difference Result 11772 states and 52511 transitions. [2021-05-22 02:00:10,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:10,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:10,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:10,954 INFO L225 Difference]: With dead ends: 11772 [2021-05-22 02:00:10,954 INFO L226 Difference]: Without dead ends: 11295 [2021-05-22 02:00:10,955 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:11,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11295 states. [2021-05-22 02:00:11,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11295 to 5289. [2021-05-22 02:00:11,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5289 states, 5288 states have (on average 4.717095310136157) internal successors, (24944), 5288 states have internal predecessors, (24944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5289 states to 5289 states and 24944 transitions. [2021-05-22 02:00:11,211 INFO L78 Accepts]: Start accepts. Automaton has 5289 states and 24944 transitions. Word has length 29 [2021-05-22 02:00:11,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:11,211 INFO L482 AbstractCegarLoop]: Abstraction has 5289 states and 24944 transitions. [2021-05-22 02:00:11,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:11,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5289 states and 24944 transitions. [2021-05-22 02:00:11,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:11,221 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:11,221 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:11,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-05-22 02:00:11,221 INFO L430 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:11,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:11,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1137262855, now seen corresponding path program 348 times [2021-05-22 02:00:11,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:11,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966465960] [2021-05-22 02:00:11,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:11,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:11,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:11,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966465960] [2021-05-22 02:00:11,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966465960] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:11,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:11,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:11,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377862278] [2021-05-22 02:00:11,355 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:11,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:11,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:11,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:11,355 INFO L87 Difference]: Start difference. First operand 5289 states and 24944 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:11,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:11,486 INFO L93 Difference]: Finished difference Result 11766 states and 52418 transitions. [2021-05-22 02:00:11,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:11,486 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:11,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:11,516 INFO L225 Difference]: With dead ends: 11766 [2021-05-22 02:00:11,516 INFO L226 Difference]: Without dead ends: 11149 [2021-05-22 02:00:11,516 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 153.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:11,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11149 states. [2021-05-22 02:00:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11149 to 5143. [2021-05-22 02:00:11,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.746596654998055) internal successors, (24407), 5142 states have internal predecessors, (24407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:11,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24407 transitions. [2021-05-22 02:00:11,769 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24407 transitions. Word has length 29 [2021-05-22 02:00:11,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:11,769 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24407 transitions. [2021-05-22 02:00:11,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:11,770 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24407 transitions. [2021-05-22 02:00:11,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:11,778 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:11,778 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:11,778 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-05-22 02:00:11,778 INFO L430 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:11,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:11,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1339695063, now seen corresponding path program 349 times [2021-05-22 02:00:11,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:11,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082376071] [2021-05-22 02:00:11,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:11,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:11,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082376071] [2021-05-22 02:00:11,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082376071] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:11,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:11,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:11,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400984311] [2021-05-22 02:00:11,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:11,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:11,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:11,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:11,906 INFO L87 Difference]: Start difference. First operand 5143 states and 24407 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:12,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:12,022 INFO L93 Difference]: Finished difference Result 11667 states and 52063 transitions. [2021-05-22 02:00:12,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:12,022 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:12,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:12,053 INFO L225 Difference]: With dead ends: 11667 [2021-05-22 02:00:12,053 INFO L226 Difference]: Without dead ends: 11125 [2021-05-22 02:00:12,053 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:12,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11125 states. [2021-05-22 02:00:12,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11125 to 5263. [2021-05-22 02:00:12,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5262 states have (on average 4.7318510072215885) internal successors, (24899), 5262 states have internal predecessors, (24899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:12,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 24899 transitions. [2021-05-22 02:00:12,315 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 24899 transitions. Word has length 29 [2021-05-22 02:00:12,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:12,315 INFO L482 AbstractCegarLoop]: Abstraction has 5263 states and 24899 transitions. [2021-05-22 02:00:12,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:12,315 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 24899 transitions. [2021-05-22 02:00:12,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:12,325 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:12,325 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:12,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-05-22 02:00:12,325 INFO L430 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:12,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:12,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1267025961, now seen corresponding path program 350 times [2021-05-22 02:00:12,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:12,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520998703] [2021-05-22 02:00:12,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:12,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:12,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520998703] [2021-05-22 02:00:12,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520998703] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:12,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:12,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:12,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691896427] [2021-05-22 02:00:12,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:12,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:12,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:12,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:12,448 INFO L87 Difference]: Start difference. First operand 5263 states and 24899 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:12,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:12,563 INFO L93 Difference]: Finished difference Result 11540 states and 51456 transitions. [2021-05-22 02:00:12,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:12,563 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:12,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:12,594 INFO L225 Difference]: With dead ends: 11540 [2021-05-22 02:00:12,594 INFO L226 Difference]: Without dead ends: 11045 [2021-05-22 02:00:12,594 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:12,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11045 states. [2021-05-22 02:00:12,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11045 to 5183. [2021-05-22 02:00:12,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5183 states, 5182 states have (on average 4.74160555769973) internal successors, (24571), 5182 states have internal predecessors, (24571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:12,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5183 states to 5183 states and 24571 transitions. [2021-05-22 02:00:12,850 INFO L78 Accepts]: Start accepts. Automaton has 5183 states and 24571 transitions. Word has length 29 [2021-05-22 02:00:12,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:12,850 INFO L482 AbstractCegarLoop]: Abstraction has 5183 states and 24571 transitions. [2021-05-22 02:00:12,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:12,851 INFO L276 IsEmpty]: Start isEmpty. Operand 5183 states and 24571 transitions. [2021-05-22 02:00:12,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:12,860 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:12,860 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:12,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-05-22 02:00:12,860 INFO L430 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:12,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:12,861 INFO L82 PathProgramCache]: Analyzing trace with hash 922259591, now seen corresponding path program 351 times [2021-05-22 02:00:12,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:12,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101323144] [2021-05-22 02:00:12,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:12,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:12,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:12,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101323144] [2021-05-22 02:00:12,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101323144] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:12,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:12,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:12,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519189553] [2021-05-22 02:00:12,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:12,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:12,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:12,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:12,988 INFO L87 Difference]: Start difference. First operand 5183 states and 24571 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:13,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:13,101 INFO L93 Difference]: Finished difference Result 11751 states and 52415 transitions. [2021-05-22 02:00:13,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:13,101 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:13,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:13,133 INFO L225 Difference]: With dead ends: 11751 [2021-05-22 02:00:13,133 INFO L226 Difference]: Without dead ends: 11209 [2021-05-22 02:00:13,133 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:13,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11209 states. [2021-05-22 02:00:13,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11209 to 5291. [2021-05-22 02:00:13,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5291 states, 5290 states have (on average 4.720415879017013) internal successors, (24971), 5290 states have internal predecessors, (24971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:13,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5291 states to 5291 states and 24971 transitions. [2021-05-22 02:00:13,434 INFO L78 Accepts]: Start accepts. Automaton has 5291 states and 24971 transitions. Word has length 29 [2021-05-22 02:00:13,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:13,434 INFO L482 AbstractCegarLoop]: Abstraction has 5291 states and 24971 transitions. [2021-05-22 02:00:13,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:13,434 INFO L276 IsEmpty]: Start isEmpty. Operand 5291 states and 24971 transitions. [2021-05-22 02:00:13,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:13,443 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:13,443 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:13,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-05-22 02:00:13,443 INFO L430 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:13,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:13,443 INFO L82 PathProgramCache]: Analyzing trace with hash -958330839, now seen corresponding path program 352 times [2021-05-22 02:00:13,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:13,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493398057] [2021-05-22 02:00:13,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:13,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:13,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493398057] [2021-05-22 02:00:13,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493398057] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:13,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:13,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:13,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535444724] [2021-05-22 02:00:13,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:13,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:13,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:13,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:13,562 INFO L87 Difference]: Start difference. First operand 5291 states and 24971 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:13,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:13,672 INFO L93 Difference]: Finished difference Result 11680 states and 52032 transitions. [2021-05-22 02:00:13,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:13,672 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:13,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:13,704 INFO L225 Difference]: With dead ends: 11680 [2021-05-22 02:00:13,704 INFO L226 Difference]: Without dead ends: 11101 [2021-05-22 02:00:13,705 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:13,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11101 states. [2021-05-22 02:00:13,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11101 to 5183. [2021-05-22 02:00:13,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5183 states, 5182 states have (on average 4.733886530297182) internal successors, (24531), 5182 states have internal predecessors, (24531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:13,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5183 states to 5183 states and 24531 transitions. [2021-05-22 02:00:13,950 INFO L78 Accepts]: Start accepts. Automaton has 5183 states and 24531 transitions. Word has length 29 [2021-05-22 02:00:13,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:13,951 INFO L482 AbstractCegarLoop]: Abstraction has 5183 states and 24531 transitions. [2021-05-22 02:00:13,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:13,951 INFO L276 IsEmpty]: Start isEmpty. Operand 5183 states and 24531 transitions. [2021-05-22 02:00:13,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:13,961 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:13,961 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:13,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-05-22 02:00:13,961 INFO L430 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:13,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:13,962 INFO L82 PathProgramCache]: Analyzing trace with hash 953978921, now seen corresponding path program 353 times [2021-05-22 02:00:13,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:13,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681342445] [2021-05-22 02:00:13,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:14,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:14,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:14,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681342445] [2021-05-22 02:00:14,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681342445] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:14,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:14,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:14,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579220639] [2021-05-22 02:00:14,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:14,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:14,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:14,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:14,105 INFO L87 Difference]: Start difference. First operand 5183 states and 24531 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:14,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:14,198 INFO L93 Difference]: Finished difference Result 11437 states and 51037 transitions. [2021-05-22 02:00:14,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:14,198 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:14,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:14,227 INFO L225 Difference]: With dead ends: 11437 [2021-05-22 02:00:14,227 INFO L226 Difference]: Without dead ends: 11022 [2021-05-22 02:00:14,227 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:14,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11022 states. [2021-05-22 02:00:14,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11022 to 5231. [2021-05-22 02:00:14,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5231 states, 5230 states have (on average 4.724091778202677) internal successors, (24707), 5230 states have internal predecessors, (24707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:14,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5231 states to 5231 states and 24707 transitions. [2021-05-22 02:00:14,480 INFO L78 Accepts]: Start accepts. Automaton has 5231 states and 24707 transitions. Word has length 29 [2021-05-22 02:00:14,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:14,480 INFO L482 AbstractCegarLoop]: Abstraction has 5231 states and 24707 transitions. [2021-05-22 02:00:14,480 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:14,480 INFO L276 IsEmpty]: Start isEmpty. Operand 5231 states and 24707 transitions. [2021-05-22 02:00:14,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:14,490 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:14,490 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:14,490 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-05-22 02:00:14,490 INFO L430 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:14,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:14,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1162100729, now seen corresponding path program 354 times [2021-05-22 02:00:14,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:14,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100089882] [2021-05-22 02:00:14,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:14,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:14,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:14,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100089882] [2021-05-22 02:00:14,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100089882] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:14,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:14,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:14,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826389433] [2021-05-22 02:00:14,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:14,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:14,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:14,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:14,611 INFO L87 Difference]: Start difference. First operand 5231 states and 24707 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:14,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:14,722 INFO L93 Difference]: Finished difference Result 11493 states and 51241 transitions. [2021-05-22 02:00:14,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:14,722 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:14,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:14,750 INFO L225 Difference]: With dead ends: 11493 [2021-05-22 02:00:14,750 INFO L226 Difference]: Without dead ends: 10934 [2021-05-22 02:00:14,751 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:14,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10934 states. [2021-05-22 02:00:14,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10934 to 5143. [2021-05-22 02:00:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.742707117852976) internal successors, (24387), 5142 states have internal predecessors, (24387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:15,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24387 transitions. [2021-05-22 02:00:15,003 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24387 transitions. Word has length 29 [2021-05-22 02:00:15,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:15,003 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24387 transitions. [2021-05-22 02:00:15,003 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:15,003 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24387 transitions. [2021-05-22 02:00:15,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:15,013 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:15,013 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:15,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-05-22 02:00:15,013 INFO L430 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:15,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:15,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1260174325, now seen corresponding path program 355 times [2021-05-22 02:00:15,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:15,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753586798] [2021-05-22 02:00:15,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:15,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:15,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:15,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753586798] [2021-05-22 02:00:15,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753586798] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:15,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:15,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:15,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437431095] [2021-05-22 02:00:15,131 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:15,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:15,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:15,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:15,132 INFO L87 Difference]: Start difference. First operand 5143 states and 24387 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:15,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:15,255 INFO L93 Difference]: Finished difference Result 11360 states and 50757 transitions. [2021-05-22 02:00:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:15,256 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:15,286 INFO L225 Difference]: With dead ends: 11360 [2021-05-22 02:00:15,286 INFO L226 Difference]: Without dead ends: 10883 [2021-05-22 02:00:15,286 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:15,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10883 states. [2021-05-22 02:00:15,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10883 to 5215. [2021-05-22 02:00:15,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5214 states have (on average 4.734752589182969) internal successors, (24687), 5214 states have internal predecessors, (24687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 24687 transitions. [2021-05-22 02:00:15,535 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 24687 transitions. Word has length 29 [2021-05-22 02:00:15,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:15,536 INFO L482 AbstractCegarLoop]: Abstraction has 5215 states and 24687 transitions. [2021-05-22 02:00:15,536 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:15,536 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 24687 transitions. [2021-05-22 02:00:15,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:15,545 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:15,545 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:15,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-05-22 02:00:15,545 INFO L430 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:15,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:15,545 INFO L82 PathProgramCache]: Analyzing trace with hash -2106971287, now seen corresponding path program 356 times [2021-05-22 02:00:15,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:15,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345292896] [2021-05-22 02:00:15,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:15,664 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:15,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345292896] [2021-05-22 02:00:15,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345292896] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:15,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:15,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:15,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722508718] [2021-05-22 02:00:15,665 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:15,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:15,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:15,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:15,665 INFO L87 Difference]: Start difference. First operand 5215 states and 24687 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:15,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:15,771 INFO L93 Difference]: Finished difference Result 11298 states and 50440 transitions. [2021-05-22 02:00:15,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:15,771 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:15,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:15,802 INFO L225 Difference]: With dead ends: 11298 [2021-05-22 02:00:15,802 INFO L226 Difference]: Without dead ends: 10835 [2021-05-22 02:00:15,802 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:15,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10835 states. [2021-05-22 02:00:16,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10835 to 5167. [2021-05-22 02:00:16,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.740030971738289) internal successors, (24487), 5166 states have internal predecessors, (24487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:16,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24487 transitions. [2021-05-22 02:00:16,057 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24487 transitions. Word has length 29 [2021-05-22 02:00:16,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:16,057 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24487 transitions. [2021-05-22 02:00:16,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:16,057 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24487 transitions. [2021-05-22 02:00:16,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:16,066 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:16,067 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:16,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-05-22 02:00:16,067 INFO L430 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:16,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:16,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1001780329, now seen corresponding path program 357 times [2021-05-22 02:00:16,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:16,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652311854] [2021-05-22 02:00:16,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:16,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:16,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652311854] [2021-05-22 02:00:16,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652311854] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:16,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:16,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:16,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781872793] [2021-05-22 02:00:16,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:16,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:16,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:16,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:16,177 INFO L87 Difference]: Start difference. First operand 5167 states and 24487 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:16,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:16,292 INFO L93 Difference]: Finished difference Result 11444 states and 51125 transitions. [2021-05-22 02:00:16,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:16,293 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:16,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:16,323 INFO L225 Difference]: With dead ends: 11444 [2021-05-22 02:00:16,323 INFO L226 Difference]: Without dead ends: 10967 [2021-05-22 02:00:16,323 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:16,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10967 states. [2021-05-22 02:00:16,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10967 to 5243. [2021-05-22 02:00:16,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 5242 states have (on average 4.726249523082793) internal successors, (24775), 5242 states have internal predecessors, (24775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:16,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 24775 transitions. [2021-05-22 02:00:16,571 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 24775 transitions. Word has length 29 [2021-05-22 02:00:16,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:16,571 INFO L482 AbstractCegarLoop]: Abstraction has 5243 states and 24775 transitions. [2021-05-22 02:00:16,571 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:16,571 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 24775 transitions. [2021-05-22 02:00:16,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:16,580 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:16,580 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:16,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-05-22 02:00:16,581 INFO L430 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:16,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:16,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1756586903, now seen corresponding path program 358 times [2021-05-22 02:00:16,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:16,581 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860599039] [2021-05-22 02:00:16,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:16,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:16,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860599039] [2021-05-22 02:00:16,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860599039] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:16,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:16,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:16,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352635275] [2021-05-22 02:00:16,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:16,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:16,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:16,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:16,692 INFO L87 Difference]: Start difference. First operand 5243 states and 24775 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:16,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:16,827 INFO L93 Difference]: Finished difference Result 11438 states and 51032 transitions. [2021-05-22 02:00:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:16,827 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:16,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:16,856 INFO L225 Difference]: With dead ends: 11438 [2021-05-22 02:00:16,856 INFO L226 Difference]: Without dead ends: 10891 [2021-05-22 02:00:16,856 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:16,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10891 states. [2021-05-22 02:00:17,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10891 to 5167. [2021-05-22 02:00:17,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.735385210994967) internal successors, (24463), 5166 states have internal predecessors, (24463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:17,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24463 transitions. [2021-05-22 02:00:17,106 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24463 transitions. Word has length 29 [2021-05-22 02:00:17,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:17,106 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24463 transitions. [2021-05-22 02:00:17,106 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:17,106 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24463 transitions. [2021-05-22 02:00:17,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:17,115 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:17,115 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:17,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-05-22 02:00:17,115 INFO L430 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:17,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:17,115 INFO L82 PathProgramCache]: Analyzing trace with hash 145032263, now seen corresponding path program 359 times [2021-05-22 02:00:17,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:17,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118141551] [2021-05-22 02:00:17,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:17,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:17,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118141551] [2021-05-22 02:00:17,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118141551] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:17,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:17,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:17,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096694846] [2021-05-22 02:00:17,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:17,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:17,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:17,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:17,237 INFO L87 Difference]: Start difference. First operand 5167 states and 24463 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:17,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:17,334 INFO L93 Difference]: Finished difference Result 11292 states and 50423 transitions. [2021-05-22 02:00:17,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:17,334 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:17,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:17,364 INFO L225 Difference]: With dead ends: 11292 [2021-05-22 02:00:17,364 INFO L226 Difference]: Without dead ends: 10877 [2021-05-22 02:00:17,364 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:17,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10877 states. [2021-05-22 02:00:17,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10877 to 5215. [2021-05-22 02:00:17,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5214 states have (on average 4.725546605293441) internal successors, (24639), 5214 states have internal predecessors, (24639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:17,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 24639 transitions. [2021-05-22 02:00:17,616 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 24639 transitions. Word has length 29 [2021-05-22 02:00:17,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:17,616 INFO L482 AbstractCegarLoop]: Abstraction has 5215 states and 24639 transitions. [2021-05-22 02:00:17,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:17,617 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 24639 transitions. [2021-05-22 02:00:17,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:17,626 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:17,626 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:17,626 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-05-22 02:00:17,626 INFO L430 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:17,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:17,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1028927447, now seen corresponding path program 360 times [2021-05-22 02:00:17,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:17,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803829316] [2021-05-22 02:00:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:17,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:17,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803829316] [2021-05-22 02:00:17,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803829316] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:17,750 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:17,750 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:17,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221575999] [2021-05-22 02:00:17,750 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:17,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:17,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:17,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:17,750 INFO L87 Difference]: Start difference. First operand 5215 states and 24639 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:17,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:17,868 INFO L93 Difference]: Finished difference Result 11348 states and 50627 transitions. [2021-05-22 02:00:17,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:17,868 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:17,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:17,898 INFO L225 Difference]: With dead ends: 11348 [2021-05-22 02:00:17,898 INFO L226 Difference]: Without dead ends: 10765 [2021-05-22 02:00:17,898 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:18,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10765 states. [2021-05-22 02:00:18,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10765 to 5103. [2021-05-22 02:00:18,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5103 states, 5102 states have (on average 4.758330066640533) internal successors, (24277), 5102 states have internal predecessors, (24277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:18,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5103 states to 5103 states and 24277 transitions. [2021-05-22 02:00:18,145 INFO L78 Accepts]: Start accepts. Automaton has 5103 states and 24277 transitions. Word has length 29 [2021-05-22 02:00:18,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:18,145 INFO L482 AbstractCegarLoop]: Abstraction has 5103 states and 24277 transitions. [2021-05-22 02:00:18,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:18,145 INFO L276 IsEmpty]: Start isEmpty. Operand 5103 states and 24277 transitions. [2021-05-22 02:00:18,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:18,154 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:18,155 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:18,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-05-22 02:00:18,155 INFO L430 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:18,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:18,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1342427667, now seen corresponding path program 361 times [2021-05-22 02:00:18,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:18,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170104916] [2021-05-22 02:00:18,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:18,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:18,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170104916] [2021-05-22 02:00:18,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170104916] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:18,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:18,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:18,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344979931] [2021-05-22 02:00:18,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:18,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:18,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:18,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:18,297 INFO L87 Difference]: Start difference. First operand 5103 states and 24277 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:18,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:18,417 INFO L93 Difference]: Finished difference Result 11084 states and 49581 transitions. [2021-05-22 02:00:18,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:18,417 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:18,449 INFO L225 Difference]: With dead ends: 11084 [2021-05-22 02:00:18,450 INFO L226 Difference]: Without dead ends: 10669 [2021-05-22 02:00:18,450 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 161.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:18,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10669 states. [2021-05-22 02:00:18,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10669 to 5239. [2021-05-22 02:00:18,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5239 states, 5238 states have (on average 4.752386407025583) internal successors, (24893), 5238 states have internal predecessors, (24893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:18,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5239 states to 5239 states and 24893 transitions. [2021-05-22 02:00:18,703 INFO L78 Accepts]: Start accepts. Automaton has 5239 states and 24893 transitions. Word has length 29 [2021-05-22 02:00:18,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:18,703 INFO L482 AbstractCegarLoop]: Abstraction has 5239 states and 24893 transitions. [2021-05-22 02:00:18,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:18,704 INFO L276 IsEmpty]: Start isEmpty. Operand 5239 states and 24893 transitions. [2021-05-22 02:00:18,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:18,713 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:18,713 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:18,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-05-22 02:00:18,713 INFO L430 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:18,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:18,713 INFO L82 PathProgramCache]: Analyzing trace with hash 412392941, now seen corresponding path program 362 times [2021-05-22 02:00:18,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:18,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579787986] [2021-05-22 02:00:18,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:18,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:18,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579787986] [2021-05-22 02:00:18,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579787986] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:18,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:18,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:18,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788347535] [2021-05-22 02:00:18,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:18,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:18,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:18,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:18,831 INFO L87 Difference]: Start difference. First operand 5239 states and 24893 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:18,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:18,940 INFO L93 Difference]: Finished difference Result 11211 states and 50060 transitions. [2021-05-22 02:00:18,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:18,940 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:18,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:18,968 INFO L225 Difference]: With dead ends: 11211 [2021-05-22 02:00:18,968 INFO L226 Difference]: Without dead ends: 10589 [2021-05-22 02:00:18,968 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:19,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10589 states. [2021-05-22 02:00:19,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10589 to 5159. [2021-05-22 02:00:19,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5159 states, 5158 states have (on average 4.757851880573866) internal successors, (24541), 5158 states have internal predecessors, (24541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:19,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5159 states to 5159 states and 24541 transitions. [2021-05-22 02:00:19,211 INFO L78 Accepts]: Start accepts. Automaton has 5159 states and 24541 transitions. Word has length 29 [2021-05-22 02:00:19,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:19,211 INFO L482 AbstractCegarLoop]: Abstraction has 5159 states and 24541 transitions. [2021-05-22 02:00:19,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:19,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5159 states and 24541 transitions. [2021-05-22 02:00:19,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:19,220 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:19,220 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:19,220 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-05-22 02:00:19,220 INFO L430 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:19,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:19,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1257639669, now seen corresponding path program 363 times [2021-05-22 02:00:19,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:19,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014573733] [2021-05-22 02:00:19,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:19,329 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:19,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014573733] [2021-05-22 02:00:19,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014573733] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:19,329 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:19,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:19,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609259595] [2021-05-22 02:00:19,329 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:19,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:19,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:19,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:19,330 INFO L87 Difference]: Start difference. First operand 5159 states and 24541 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:19,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:19,447 INFO L93 Difference]: Finished difference Result 10909 states and 48798 transitions. [2021-05-22 02:00:19,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:19,447 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:19,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:19,475 INFO L225 Difference]: With dead ends: 10909 [2021-05-22 02:00:19,475 INFO L226 Difference]: Without dead ends: 10494 [2021-05-22 02:00:19,475 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:19,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10494 states. [2021-05-22 02:00:19,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10494 to 5191. [2021-05-22 02:00:19,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.75009633911368) internal successors, (24653), 5190 states have internal predecessors, (24653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:19,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24653 transitions. [2021-05-22 02:00:19,713 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24653 transitions. Word has length 29 [2021-05-22 02:00:19,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:19,713 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24653 transitions. [2021-05-22 02:00:19,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:19,713 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24653 transitions. [2021-05-22 02:00:19,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:19,722 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:19,722 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:19,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-05-22 02:00:19,722 INFO L430 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:19,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:19,722 INFO L82 PathProgramCache]: Analyzing trace with hash 635206633, now seen corresponding path program 364 times [2021-05-22 02:00:19,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:19,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663404620] [2021-05-22 02:00:19,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:19,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:19,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:19,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663404620] [2021-05-22 02:00:19,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663404620] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:19,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:19,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:19,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698699182] [2021-05-22 02:00:19,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:19,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:19,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:19,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:19,832 INFO L87 Difference]: Start difference. First operand 5191 states and 24653 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:19,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:19,924 INFO L93 Difference]: Finished difference Result 10909 states and 48766 transitions. [2021-05-22 02:00:19,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:19,925 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:19,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:19,951 INFO L225 Difference]: With dead ends: 10909 [2021-05-22 02:00:19,951 INFO L226 Difference]: Without dead ends: 10462 [2021-05-22 02:00:19,951 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:20,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10462 states. [2021-05-22 02:00:20,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10462 to 5159. [2021-05-22 02:00:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5159 states, 5158 states have (on average 4.754749903063203) internal successors, (24525), 5158 states have internal predecessors, (24525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:20,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5159 states to 5159 states and 24525 transitions. [2021-05-22 02:00:20,190 INFO L78 Accepts]: Start accepts. Automaton has 5159 states and 24525 transitions. Word has length 29 [2021-05-22 02:00:20,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:20,191 INFO L482 AbstractCegarLoop]: Abstraction has 5159 states and 24525 transitions. [2021-05-22 02:00:20,191 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:20,191 INFO L276 IsEmpty]: Start isEmpty. Operand 5159 states and 24525 transitions. [2021-05-22 02:00:20,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:20,199 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:20,199 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:20,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-05-22 02:00:20,200 INFO L430 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:20,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:20,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1356810183, now seen corresponding path program 365 times [2021-05-22 02:00:20,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:20,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090391742] [2021-05-22 02:00:20,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:20,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:20,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090391742] [2021-05-22 02:00:20,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090391742] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:20,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:20,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:20,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318648066] [2021-05-22 02:00:20,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:20,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:20,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:20,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:20,319 INFO L87 Difference]: Start difference. First operand 5159 states and 24525 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:20,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:20,421 INFO L93 Difference]: Finished difference Result 11211 states and 50060 transitions. [2021-05-22 02:00:20,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:20,421 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:20,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:20,450 INFO L225 Difference]: With dead ends: 11211 [2021-05-22 02:00:20,450 INFO L226 Difference]: Without dead ends: 10669 [2021-05-22 02:00:20,450 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:20,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10669 states. [2021-05-22 02:00:20,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10669 to 5239. [2021-05-22 02:00:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5239 states, 5238 states have (on average 4.737113402061856) internal successors, (24813), 5238 states have internal predecessors, (24813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:20,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5239 states to 5239 states and 24813 transitions. [2021-05-22 02:00:20,692 INFO L78 Accepts]: Start accepts. Automaton has 5239 states and 24813 transitions. Word has length 29 [2021-05-22 02:00:20,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:20,692 INFO L482 AbstractCegarLoop]: Abstraction has 5239 states and 24813 transitions. [2021-05-22 02:00:20,692 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:20,692 INFO L276 IsEmpty]: Start isEmpty. Operand 5239 states and 24813 transitions. [2021-05-22 02:00:20,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:20,701 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:20,701 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:20,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-05-22 02:00:20,701 INFO L430 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:20,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:20,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1150002217, now seen corresponding path program 366 times [2021-05-22 02:00:20,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:20,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362341814] [2021-05-22 02:00:20,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:20,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:20,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362341814] [2021-05-22 02:00:20,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362341814] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:20,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:20,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:20,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719557867] [2021-05-22 02:00:20,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:20,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:20,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:20,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:20,866 INFO L87 Difference]: Start difference. First operand 5239 states and 24813 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:20,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:20,993 INFO L93 Difference]: Finished difference Result 11084 states and 49453 transitions. [2021-05-22 02:00:20,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:20,994 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:20,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:21,020 INFO L225 Difference]: With dead ends: 11084 [2021-05-22 02:00:21,020 INFO L226 Difference]: Without dead ends: 10557 [2021-05-22 02:00:21,021 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 168.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:21,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10557 states. [2021-05-22 02:00:21,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10557 to 5127. [2021-05-22 02:00:21,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 5126 states have (on average 4.759461568474444) internal successors, (24397), 5126 states have internal predecessors, (24397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:21,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 24397 transitions. [2021-05-22 02:00:21,255 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 24397 transitions. Word has length 29 [2021-05-22 02:00:21,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:21,256 INFO L482 AbstractCegarLoop]: Abstraction has 5127 states and 24397 transitions. [2021-05-22 02:00:21,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:21,256 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 24397 transitions. [2021-05-22 02:00:21,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:21,264 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:21,264 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:21,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-05-22 02:00:21,265 INFO L430 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:21,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:21,265 INFO L82 PathProgramCache]: Analyzing trace with hash 115619403, now seen corresponding path program 367 times [2021-05-22 02:00:21,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:21,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180915913] [2021-05-22 02:00:21,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:21,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:21,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180915913] [2021-05-22 02:00:21,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180915913] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:21,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:21,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:21,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829417213] [2021-05-22 02:00:21,384 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:21,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:21,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:21,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:21,384 INFO L87 Difference]: Start difference. First operand 5127 states and 24397 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:21,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:21,494 INFO L93 Difference]: Finished difference Result 11198 states and 50100 transitions. [2021-05-22 02:00:21,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:21,494 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:21,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:21,522 INFO L225 Difference]: With dead ends: 11198 [2021-05-22 02:00:21,522 INFO L226 Difference]: Without dead ends: 10783 [2021-05-22 02:00:21,522 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:21,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10783 states. [2021-05-22 02:00:21,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10783 to 5247. [2021-05-22 02:00:21,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 5246 states have (on average 4.750476553564621) internal successors, (24921), 5246 states have internal predecessors, (24921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:21,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 24921 transitions. [2021-05-22 02:00:21,769 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 24921 transitions. Word has length 29 [2021-05-22 02:00:21,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:21,770 INFO L482 AbstractCegarLoop]: Abstraction has 5247 states and 24921 transitions. [2021-05-22 02:00:21,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:21,770 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 24921 transitions. [2021-05-22 02:00:21,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:21,779 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:21,779 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:21,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-05-22 02:00:21,779 INFO L430 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:21,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:21,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1870440011, now seen corresponding path program 368 times [2021-05-22 02:00:21,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:21,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954025889] [2021-05-22 02:00:21,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:21,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:21,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954025889] [2021-05-22 02:00:21,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954025889] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:21,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:21,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:21,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983861736] [2021-05-22 02:00:21,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:21,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:21,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:21,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:21,901 INFO L87 Difference]: Start difference. First operand 5247 states and 24921 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:22,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:22,008 INFO L93 Difference]: Finished difference Result 11325 states and 50579 transitions. [2021-05-22 02:00:22,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:22,009 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:22,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:22,038 INFO L225 Difference]: With dead ends: 11325 [2021-05-22 02:00:22,039 INFO L226 Difference]: Without dead ends: 10703 [2021-05-22 02:00:22,039 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:22,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10703 states. [2021-05-22 02:00:22,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10703 to 5167. [2021-05-22 02:00:22,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.7543554006968645) internal successors, (24561), 5166 states have internal predecessors, (24561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:22,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24561 transitions. [2021-05-22 02:00:22,285 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24561 transitions. Word has length 29 [2021-05-22 02:00:22,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:22,286 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24561 transitions. [2021-05-22 02:00:22,286 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:22,286 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24561 transitions. [2021-05-22 02:00:22,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:22,295 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:22,295 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:22,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-05-22 02:00:22,295 INFO L430 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:22,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:22,296 INFO L82 PathProgramCache]: Analyzing trace with hash -216524405, now seen corresponding path program 369 times [2021-05-22 02:00:22,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:22,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607150679] [2021-05-22 02:00:22,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:22,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:22,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:22,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607150679] [2021-05-22 02:00:22,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607150679] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:22,420 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:22,420 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:22,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854625303] [2021-05-22 02:00:22,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:22,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:22,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:22,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:22,421 INFO L87 Difference]: Start difference. First operand 5167 states and 24561 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:22,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:22,540 INFO L93 Difference]: Finished difference Result 11099 states and 49653 transitions. [2021-05-22 02:00:22,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:22,540 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:22,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:22,568 INFO L225 Difference]: With dead ends: 11099 [2021-05-22 02:00:22,569 INFO L226 Difference]: Without dead ends: 10684 [2021-05-22 02:00:22,569 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:22,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10684 states. [2021-05-22 02:00:22,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10684 to 5215. [2021-05-22 02:00:22,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5214 states have (on average 4.744342155734561) internal successors, (24737), 5214 states have internal predecessors, (24737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 24737 transitions. [2021-05-22 02:00:22,809 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 24737 transitions. Word has length 29 [2021-05-22 02:00:22,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:22,809 INFO L482 AbstractCegarLoop]: Abstraction has 5215 states and 24737 transitions. [2021-05-22 02:00:22,810 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:22,810 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 24737 transitions. [2021-05-22 02:00:22,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:22,819 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:22,819 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:22,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-05-22 02:00:22,819 INFO L430 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:22,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:22,819 INFO L82 PathProgramCache]: Analyzing trace with hash -731205331, now seen corresponding path program 370 times [2021-05-22 02:00:22,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:22,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078316619] [2021-05-22 02:00:22,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:22,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:22,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078316619] [2021-05-22 02:00:22,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078316619] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:22,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:22,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:22,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810831003] [2021-05-22 02:00:22,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:22,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:22,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:22,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:22,952 INFO L87 Difference]: Start difference. First operand 5215 states and 24737 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:23,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:23,068 INFO L93 Difference]: Finished difference Result 11159 states and 49869 transitions. [2021-05-22 02:00:23,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:23,068 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:23,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:23,095 INFO L225 Difference]: With dead ends: 11159 [2021-05-22 02:00:23,095 INFO L226 Difference]: Without dead ends: 10636 [2021-05-22 02:00:23,096 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 153.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:23,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10636 states. [2021-05-22 02:00:23,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10636 to 5167. [2021-05-22 02:00:23,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.749709639953543) internal successors, (24537), 5166 states have internal predecessors, (24537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:23,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24537 transitions. [2021-05-22 02:00:23,334 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24537 transitions. Word has length 29 [2021-05-22 02:00:23,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:23,335 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24537 transitions. [2021-05-22 02:00:23,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:23,335 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24537 transitions. [2021-05-22 02:00:23,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:23,344 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:23,344 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:23,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-05-22 02:00:23,344 INFO L430 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:23,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:23,344 INFO L82 PathProgramCache]: Analyzing trace with hash 7622957, now seen corresponding path program 371 times [2021-05-22 02:00:23,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:23,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533633186] [2021-05-22 02:00:23,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:23,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:23,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533633186] [2021-05-22 02:00:23,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533633186] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:23,461 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:23,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:23,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672468200] [2021-05-22 02:00:23,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:23,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:23,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:23,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:23,461 INFO L87 Difference]: Start difference. First operand 5167 states and 24537 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:23,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:23,558 INFO L93 Difference]: Finished difference Result 11415 states and 50974 transitions. [2021-05-22 02:00:23,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:23,559 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:23,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:23,588 INFO L225 Difference]: With dead ends: 11415 [2021-05-22 02:00:23,588 INFO L226 Difference]: Without dead ends: 10873 [2021-05-22 02:00:23,588 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:23,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10873 states. [2021-05-22 02:00:23,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10873 to 5277. [2021-05-22 02:00:23,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5277 states, 5276 states have (on average 4.727445034116755) internal successors, (24942), 5276 states have internal predecessors, (24942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:23,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 24942 transitions. [2021-05-22 02:00:23,887 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 24942 transitions. Word has length 29 [2021-05-22 02:00:23,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:23,887 INFO L482 AbstractCegarLoop]: Abstraction has 5277 states and 24942 transitions. [2021-05-22 02:00:23,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:23,887 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 24942 transitions. [2021-05-22 02:00:23,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:23,896 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:23,896 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:23,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-05-22 02:00:23,896 INFO L430 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:23,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:23,896 INFO L82 PathProgramCache]: Analyzing trace with hash -733329141, now seen corresponding path program 372 times [2021-05-22 02:00:23,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:23,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798535357] [2021-05-22 02:00:23,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:24,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:24,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798535357] [2021-05-22 02:00:24,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798535357] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:24,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:24,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:24,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20627697] [2021-05-22 02:00:24,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:24,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:24,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:24,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:24,009 INFO L87 Difference]: Start difference. First operand 5277 states and 24942 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:24,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:24,130 INFO L93 Difference]: Finished difference Result 11348 states and 50601 transitions. [2021-05-22 02:00:24,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:24,131 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:24,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:24,159 INFO L225 Difference]: With dead ends: 11348 [2021-05-22 02:00:24,159 INFO L226 Difference]: Without dead ends: 10723 [2021-05-22 02:00:24,160 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:24,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10723 states. [2021-05-22 02:00:24,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10723 to 5127. [2021-05-22 02:00:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 5126 states have (on average 4.756340226297308) internal successors, (24381), 5126 states have internal predecessors, (24381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:24,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 24381 transitions. [2021-05-22 02:00:24,409 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 24381 transitions. Word has length 29 [2021-05-22 02:00:24,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:24,409 INFO L482 AbstractCegarLoop]: Abstraction has 5127 states and 24381 transitions. [2021-05-22 02:00:24,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:24,409 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 24381 transitions. [2021-05-22 02:00:24,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:24,418 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:24,418 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:24,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-05-22 02:00:24,418 INFO L430 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:24,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:24,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1622703401, now seen corresponding path program 373 times [2021-05-22 02:00:24,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:24,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254688833] [2021-05-22 02:00:24,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:24,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:24,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:24,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254688833] [2021-05-22 02:00:24,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254688833] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:24,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:24,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:24,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663303398] [2021-05-22 02:00:24,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:24,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:24,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:24,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:24,533 INFO L87 Difference]: Start difference. First operand 5127 states and 24381 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:24,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:24,666 INFO L93 Difference]: Finished difference Result 10762 states and 48167 transitions. [2021-05-22 02:00:24,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:24,666 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:24,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:24,693 INFO L225 Difference]: With dead ends: 10762 [2021-05-22 02:00:24,694 INFO L226 Difference]: Without dead ends: 10347 [2021-05-22 02:00:24,694 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:24,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10347 states. [2021-05-22 02:00:24,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10347 to 5175. [2021-05-22 02:00:24,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 5174 states have (on average 4.749323540780828) internal successors, (24573), 5174 states have internal predecessors, (24573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:24,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 24573 transitions. [2021-05-22 02:00:24,942 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 24573 transitions. Word has length 29 [2021-05-22 02:00:24,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:24,942 INFO L482 AbstractCegarLoop]: Abstraction has 5175 states and 24573 transitions. [2021-05-22 02:00:24,942 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:24,942 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 24573 transitions. [2021-05-22 02:00:24,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:24,951 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:24,951 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:24,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-05-22 02:00:24,951 INFO L430 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:24,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:24,951 INFO L82 PathProgramCache]: Analyzing trace with hash -779417593, now seen corresponding path program 374 times [2021-05-22 02:00:24,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:24,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228942171] [2021-05-22 02:00:24,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:25,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:25,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228942171] [2021-05-22 02:00:25,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228942171] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:25,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:25,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:25,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985291888] [2021-05-22 02:00:25,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:25,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:25,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:25,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:25,066 INFO L87 Difference]: Start difference. First operand 5175 states and 24573 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:25,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:25,178 INFO L93 Difference]: Finished difference Result 10762 states and 48135 transitions. [2021-05-22 02:00:25,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:25,178 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:25,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:25,205 INFO L225 Difference]: With dead ends: 10762 [2021-05-22 02:00:25,206 INFO L226 Difference]: Without dead ends: 10315 [2021-05-22 02:00:25,206 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:25,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10315 states. [2021-05-22 02:00:25,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10315 to 5143. [2021-05-22 02:00:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.753986775573707) internal successors, (24445), 5142 states have internal predecessors, (24445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:25,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24445 transitions. [2021-05-22 02:00:25,447 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24445 transitions. Word has length 29 [2021-05-22 02:00:25,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:25,447 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24445 transitions. [2021-05-22 02:00:25,447 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:25,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24445 transitions. [2021-05-22 02:00:25,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:25,456 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:25,456 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:25,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-05-22 02:00:25,456 INFO L430 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:25,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:25,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1141801355, now seen corresponding path program 375 times [2021-05-22 02:00:25,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:25,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062057162] [2021-05-22 02:00:25,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:25,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:25,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:25,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062057162] [2021-05-22 02:00:25,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062057162] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:25,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:25,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:25,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492210456] [2021-05-22 02:00:25,584 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:25,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:25,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:25,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:25,584 INFO L87 Difference]: Start difference. First operand 5143 states and 24445 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:25,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:25,698 INFO L93 Difference]: Finished difference Result 10838 states and 48495 transitions. [2021-05-22 02:00:25,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:25,699 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:25,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:25,728 INFO L225 Difference]: With dead ends: 10838 [2021-05-22 02:00:25,728 INFO L226 Difference]: Without dead ends: 10423 [2021-05-22 02:00:25,728 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:25,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10423 states. [2021-05-22 02:00:25,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10423 to 5191. [2021-05-22 02:00:25,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.74393063583815) internal successors, (24621), 5190 states have internal predecessors, (24621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:25,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24621 transitions. [2021-05-22 02:00:25,964 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24621 transitions. Word has length 29 [2021-05-22 02:00:25,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:25,964 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24621 transitions. [2021-05-22 02:00:25,964 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:25,964 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24621 transitions. [2021-05-22 02:00:25,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:25,973 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:25,973 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:25,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2021-05-22 02:00:25,973 INFO L430 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:25,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:25,973 INFO L82 PathProgramCache]: Analyzing trace with hash -854317877, now seen corresponding path program 376 times [2021-05-22 02:00:25,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:25,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460544901] [2021-05-22 02:00:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:26,096 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:26,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460544901] [2021-05-22 02:00:26,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460544901] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:26,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:26,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:26,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829855054] [2021-05-22 02:00:26,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:26,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:26,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:26,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:26,097 INFO L87 Difference]: Start difference. First operand 5191 states and 24621 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:26,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:26,214 INFO L93 Difference]: Finished difference Result 10898 states and 48711 transitions. [2021-05-22 02:00:26,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:26,214 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:26,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:26,241 INFO L225 Difference]: With dead ends: 10898 [2021-05-22 02:00:26,241 INFO L226 Difference]: Without dead ends: 10375 [2021-05-22 02:00:26,241 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:26,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10375 states. [2021-05-22 02:00:26,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10375 to 5143. [2021-05-22 02:00:26,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.750875145857643) internal successors, (24429), 5142 states have internal predecessors, (24429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:26,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24429 transitions. [2021-05-22 02:00:26,477 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24429 transitions. Word has length 29 [2021-05-22 02:00:26,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:26,477 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24429 transitions. [2021-05-22 02:00:26,477 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:26,477 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24429 transitions. [2021-05-22 02:00:26,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:26,486 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:26,486 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:26,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2021-05-22 02:00:26,487 INFO L430 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:26,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:26,487 INFO L82 PathProgramCache]: Analyzing trace with hash -910113657, now seen corresponding path program 377 times [2021-05-22 02:00:26,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:26,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500116352] [2021-05-22 02:00:26,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:26,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:26,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:26,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500116352] [2021-05-22 02:00:26,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500116352] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:26,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:26,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:26,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952693905] [2021-05-22 02:00:26,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:26,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:26,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:26,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:26,609 INFO L87 Difference]: Start difference. First operand 5143 states and 24429 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:26,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:26,699 INFO L93 Difference]: Finished difference Result 10838 states and 48479 transitions. [2021-05-22 02:00:26,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:26,699 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:26,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:26,727 INFO L225 Difference]: With dead ends: 10838 [2021-05-22 02:00:26,727 INFO L226 Difference]: Without dead ends: 10423 [2021-05-22 02:00:26,727 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:26,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10423 states. [2021-05-22 02:00:26,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10423 to 5191. [2021-05-22 02:00:26,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.740847784200385) internal successors, (24605), 5190 states have internal predecessors, (24605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:26,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24605 transitions. [2021-05-22 02:00:26,967 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24605 transitions. Word has length 29 [2021-05-22 02:00:26,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:26,967 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24605 transitions. [2021-05-22 02:00:26,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:26,967 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24605 transitions. [2021-05-22 02:00:26,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:26,976 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:26,976 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:26,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2021-05-22 02:00:26,977 INFO L430 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:26,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:26,977 INFO L82 PathProgramCache]: Analyzing trace with hash 170948969, now seen corresponding path program 378 times [2021-05-22 02:00:26,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:26,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299402651] [2021-05-22 02:00:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:27,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:27,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:27,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299402651] [2021-05-22 02:00:27,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299402651] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:27,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:27,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:27,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881155622] [2021-05-22 02:00:27,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:27,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:27,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:27,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:27,101 INFO L87 Difference]: Start difference. First operand 5191 states and 24605 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:27,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:27,210 INFO L93 Difference]: Finished difference Result 10898 states and 48695 transitions. [2021-05-22 02:00:27,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:27,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:27,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:27,238 INFO L225 Difference]: With dead ends: 10898 [2021-05-22 02:00:27,238 INFO L226 Difference]: Without dead ends: 10359 [2021-05-22 02:00:27,238 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:27,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10359 states. [2021-05-22 02:00:27,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10359 to 5127. [2021-05-22 02:00:27,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 5126 states have (on average 4.7547795552087395) internal successors, (24373), 5126 states have internal predecessors, (24373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:27,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 24373 transitions. [2021-05-22 02:00:27,472 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 24373 transitions. Word has length 29 [2021-05-22 02:00:27,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:27,472 INFO L482 AbstractCegarLoop]: Abstraction has 5127 states and 24373 transitions. [2021-05-22 02:00:27,472 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:27,473 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 24373 transitions. [2021-05-22 02:00:27,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:27,481 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:27,481 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:27,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2021-05-22 02:00:27,482 INFO L430 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:27,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:27,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1892581, now seen corresponding path program 379 times [2021-05-22 02:00:27,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:27,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582654628] [2021-05-22 02:00:27,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:27,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:27,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:27,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582654628] [2021-05-22 02:00:27,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582654628] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:27,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:27,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:27,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109907232] [2021-05-22 02:00:27,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:27,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:27,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:27,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:27,602 INFO L87 Difference]: Start difference. First operand 5127 states and 24373 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:27,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:27,703 INFO L93 Difference]: Finished difference Result 11325 states and 50603 transitions. [2021-05-22 02:00:27,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:27,705 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:27,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:27,736 INFO L225 Difference]: With dead ends: 11325 [2021-05-22 02:00:27,736 INFO L226 Difference]: Without dead ends: 10783 [2021-05-22 02:00:27,736 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:27,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10783 states. [2021-05-22 02:00:27,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10783 to 5247. [2021-05-22 02:00:27,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 5246 states have (on average 4.739801753717118) internal successors, (24865), 5246 states have internal predecessors, (24865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:27,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 24865 transitions. [2021-05-22 02:00:27,986 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 24865 transitions. Word has length 29 [2021-05-22 02:00:27,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:27,986 INFO L482 AbstractCegarLoop]: Abstraction has 5247 states and 24865 transitions. [2021-05-22 02:00:27,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:27,987 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 24865 transitions. [2021-05-22 02:00:27,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:27,997 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:27,997 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:27,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2021-05-22 02:00:27,998 INFO L430 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:27,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:27,998 INFO L82 PathProgramCache]: Analyzing trace with hash -204915385, now seen corresponding path program 380 times [2021-05-22 02:00:27,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:27,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309405997] [2021-05-22 02:00:27,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:28,122 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:28,122 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309405997] [2021-05-22 02:00:28,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309405997] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:28,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:28,123 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:28,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17544615] [2021-05-22 02:00:28,123 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:28,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:28,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:28,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:28,123 INFO L87 Difference]: Start difference. First operand 5247 states and 24865 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:28,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:28,220 INFO L93 Difference]: Finished difference Result 11198 states and 49996 transitions. [2021-05-22 02:00:28,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:28,221 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:28,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:28,250 INFO L225 Difference]: With dead ends: 11198 [2021-05-22 02:00:28,251 INFO L226 Difference]: Without dead ends: 10703 [2021-05-22 02:00:28,251 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:28,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10703 states. [2021-05-22 02:00:28,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10703 to 5167. [2021-05-22 02:00:28,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.749709639953543) internal successors, (24537), 5166 states have internal predecessors, (24537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:28,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24537 transitions. [2021-05-22 02:00:28,502 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24537 transitions. Word has length 29 [2021-05-22 02:00:28,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:28,502 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24537 transitions. [2021-05-22 02:00:28,502 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:28,502 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24537 transitions. [2021-05-22 02:00:28,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:28,511 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:28,511 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:28,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2021-05-22 02:00:28,512 INFO L430 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:28,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:28,512 INFO L82 PathProgramCache]: Analyzing trace with hash -479009465, now seen corresponding path program 381 times [2021-05-22 02:00:28,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:28,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756148075] [2021-05-22 02:00:28,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:28,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:28,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:28,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756148075] [2021-05-22 02:00:28,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756148075] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:28,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:28,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:28,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888784571] [2021-05-22 02:00:28,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:28,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:28,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:28,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:28,626 INFO L87 Difference]: Start difference. First operand 5167 states and 24537 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:28,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:28,733 INFO L93 Difference]: Finished difference Result 11415 states and 50974 transitions. [2021-05-22 02:00:28,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:28,733 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:28,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:28,763 INFO L225 Difference]: With dead ends: 11415 [2021-05-22 02:00:28,763 INFO L226 Difference]: Without dead ends: 10873 [2021-05-22 02:00:28,763 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:28,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10873 states. [2021-05-22 02:00:29,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10873 to 5277. [2021-05-22 02:00:29,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5277 states, 5276 states have (on average 4.727445034116755) internal successors, (24942), 5276 states have internal predecessors, (24942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 24942 transitions. [2021-05-22 02:00:29,024 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 24942 transitions. Word has length 29 [2021-05-22 02:00:29,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:29,024 INFO L482 AbstractCegarLoop]: Abstraction has 5277 states and 24942 transitions. [2021-05-22 02:00:29,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:29,024 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 24942 transitions. [2021-05-22 02:00:29,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:29,034 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:29,034 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:29,034 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2021-05-22 02:00:29,034 INFO L430 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:29,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:29,034 INFO L82 PathProgramCache]: Analyzing trace with hash 839840967, now seen corresponding path program 382 times [2021-05-22 02:00:29,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:29,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101339703] [2021-05-22 02:00:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:29,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:29,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:29,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101339703] [2021-05-22 02:00:29,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101339703] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:29,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:29,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:29,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677769432] [2021-05-22 02:00:29,147 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:29,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:29,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:29,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:29,147 INFO L87 Difference]: Start difference. First operand 5277 states and 24942 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:29,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:29,258 INFO L93 Difference]: Finished difference Result 11348 states and 50601 transitions. [2021-05-22 02:00:29,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:29,258 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:29,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:29,287 INFO L225 Difference]: With dead ends: 11348 [2021-05-22 02:00:29,287 INFO L226 Difference]: Without dead ends: 10763 [2021-05-22 02:00:29,287 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:29,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10763 states. [2021-05-22 02:00:29,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10763 to 5167. [2021-05-22 02:00:29,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.74196670538134) internal successors, (24497), 5166 states have internal predecessors, (24497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:29,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24497 transitions. [2021-05-22 02:00:29,530 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24497 transitions. Word has length 29 [2021-05-22 02:00:29,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:29,530 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24497 transitions. [2021-05-22 02:00:29,530 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:29,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24497 transitions. [2021-05-22 02:00:29,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:29,539 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:29,539 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:29,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2021-05-22 02:00:29,539 INFO L430 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:29,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:29,539 INFO L82 PathProgramCache]: Analyzing trace with hash -2071932759, now seen corresponding path program 383 times [2021-05-22 02:00:29,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:29,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71223770] [2021-05-22 02:00:29,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:29,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:29,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71223770] [2021-05-22 02:00:29,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71223770] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:29,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:29,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:29,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915220583] [2021-05-22 02:00:29,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:29,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:29,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:29,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:29,660 INFO L87 Difference]: Start difference. First operand 5167 states and 24497 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:29,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:29,758 INFO L93 Difference]: Finished difference Result 11099 states and 49589 transitions. [2021-05-22 02:00:29,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:29,758 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:29,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:29,789 INFO L225 Difference]: With dead ends: 11099 [2021-05-22 02:00:29,789 INFO L226 Difference]: Without dead ends: 10684 [2021-05-22 02:00:29,789 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:29,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10684 states. [2021-05-22 02:00:30,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10684 to 5215. [2021-05-22 02:00:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5214 states have (on average 4.732067510548523) internal successors, (24673), 5214 states have internal predecessors, (24673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:30,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 24673 transitions. [2021-05-22 02:00:30,034 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 24673 transitions. Word has length 29 [2021-05-22 02:00:30,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:30,034 INFO L482 AbstractCegarLoop]: Abstraction has 5215 states and 24673 transitions. [2021-05-22 02:00:30,034 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:30,034 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 24673 transitions. [2021-05-22 02:00:30,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:30,043 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:30,043 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:30,043 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2021-05-22 02:00:30,043 INFO L430 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:30,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:30,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1376237575, now seen corresponding path program 384 times [2021-05-22 02:00:30,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:30,044 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592585610] [2021-05-22 02:00:30,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:30,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:30,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:30,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592585610] [2021-05-22 02:00:30,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592585610] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:30,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:30,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:30,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042491787] [2021-05-22 02:00:30,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:30,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:30,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:30,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:30,166 INFO L87 Difference]: Start difference. First operand 5215 states and 24673 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:30,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:30,281 INFO L93 Difference]: Finished difference Result 11159 states and 49805 transitions. [2021-05-22 02:00:30,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:30,281 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:30,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:30,310 INFO L225 Difference]: With dead ends: 11159 [2021-05-22 02:00:30,310 INFO L226 Difference]: Without dead ends: 10580 [2021-05-22 02:00:30,310 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:30,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10580 states. [2021-05-22 02:00:30,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10580 to 5111. [2021-05-22 02:00:30,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5111 states, 5110 states have (on average 4.758708414872799) internal successors, (24317), 5110 states have internal predecessors, (24317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:30,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5111 states to 5111 states and 24317 transitions. [2021-05-22 02:00:30,552 INFO L78 Accepts]: Start accepts. Automaton has 5111 states and 24317 transitions. Word has length 29 [2021-05-22 02:00:30,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:30,552 INFO L482 AbstractCegarLoop]: Abstraction has 5111 states and 24317 transitions. [2021-05-22 02:00:30,552 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:30,552 INFO L276 IsEmpty]: Start isEmpty. Operand 5111 states and 24317 transitions. [2021-05-22 02:00:30,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:30,561 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:30,561 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:30,561 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2021-05-22 02:00:30,561 INFO L430 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:30,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:30,561 INFO L82 PathProgramCache]: Analyzing trace with hash -318531893, now seen corresponding path program 385 times [2021-05-22 02:00:30,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:30,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257406385] [2021-05-22 02:00:30,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:30,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:30,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257406385] [2021-05-22 02:00:30,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257406385] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:30,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:30,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:30,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565193396] [2021-05-22 02:00:30,687 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:30,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:30,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:30,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:30,687 INFO L87 Difference]: Start difference. First operand 5111 states and 24317 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:30,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:30,801 INFO L93 Difference]: Finished difference Result 11078 states and 49554 transitions. [2021-05-22 02:00:30,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:30,802 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:30,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:30,831 INFO L225 Difference]: With dead ends: 11078 [2021-05-22 02:00:30,831 INFO L226 Difference]: Without dead ends: 10663 [2021-05-22 02:00:30,831 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:30,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10663 states. [2021-05-22 02:00:31,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10663 to 5239. [2021-05-22 02:00:31,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5239 states, 5238 states have (on average 4.75085910652921) internal successors, (24885), 5238 states have internal predecessors, (24885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:31,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5239 states to 5239 states and 24885 transitions. [2021-05-22 02:00:31,076 INFO L78 Accepts]: Start accepts. Automaton has 5239 states and 24885 transitions. Word has length 29 [2021-05-22 02:00:31,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:31,076 INFO L482 AbstractCegarLoop]: Abstraction has 5239 states and 24885 transitions. [2021-05-22 02:00:31,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:31,076 INFO L276 IsEmpty]: Start isEmpty. Operand 5239 states and 24885 transitions. [2021-05-22 02:00:31,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:31,085 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:31,085 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:31,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2021-05-22 02:00:31,085 INFO L430 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:31,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:31,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1436288715, now seen corresponding path program 386 times [2021-05-22 02:00:31,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:31,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706310327] [2021-05-22 02:00:31,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:31,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:31,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:31,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706310327] [2021-05-22 02:00:31,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706310327] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:31,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:31,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:31,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616984634] [2021-05-22 02:00:31,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:31,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:31,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:31,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:31,214 INFO L87 Difference]: Start difference. First operand 5239 states and 24885 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:31,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:31,323 INFO L93 Difference]: Finished difference Result 11205 states and 50033 transitions. [2021-05-22 02:00:31,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:31,323 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:31,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:31,352 INFO L225 Difference]: With dead ends: 11205 [2021-05-22 02:00:31,352 INFO L226 Difference]: Without dead ends: 10583 [2021-05-22 02:00:31,352 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:31,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10583 states. [2021-05-22 02:00:31,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10583 to 5159. [2021-05-22 02:00:31,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5159 states, 5158 states have (on average 4.756300891818534) internal successors, (24533), 5158 states have internal predecessors, (24533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:31,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5159 states to 5159 states and 24533 transitions. [2021-05-22 02:00:31,597 INFO L78 Accepts]: Start accepts. Automaton has 5159 states and 24533 transitions. Word has length 29 [2021-05-22 02:00:31,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:31,597 INFO L482 AbstractCegarLoop]: Abstraction has 5159 states and 24533 transitions. [2021-05-22 02:00:31,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:31,597 INFO L276 IsEmpty]: Start isEmpty. Operand 5159 states and 24533 transitions. [2021-05-22 02:00:31,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:31,606 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:31,606 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:31,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2021-05-22 02:00:31,606 INFO L430 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:31,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:31,606 INFO L82 PathProgramCache]: Analyzing trace with hash -233743895, now seen corresponding path program 387 times [2021-05-22 02:00:31,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:31,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985341006] [2021-05-22 02:00:31,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:31,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:31,723 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:31,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985341006] [2021-05-22 02:00:31,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985341006] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:31,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:31,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:31,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089325009] [2021-05-22 02:00:31,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:31,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:31,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:31,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:31,724 INFO L87 Difference]: Start difference. First operand 5159 states and 24533 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:31,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:31,839 INFO L93 Difference]: Finished difference Result 10903 states and 48771 transitions. [2021-05-22 02:00:31,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:31,839 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:31,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:31,867 INFO L225 Difference]: With dead ends: 10903 [2021-05-22 02:00:31,867 INFO L226 Difference]: Without dead ends: 10488 [2021-05-22 02:00:31,867 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:31,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10488 states. [2021-05-22 02:00:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10488 to 5191. [2021-05-22 02:00:32,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.7485549132947975) internal successors, (24645), 5190 states have internal predecessors, (24645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:32,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24645 transitions. [2021-05-22 02:00:32,118 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24645 transitions. Word has length 29 [2021-05-22 02:00:32,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:32,118 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24645 transitions. [2021-05-22 02:00:32,118 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:32,118 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24645 transitions. [2021-05-22 02:00:32,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:32,126 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:32,127 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:32,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2021-05-22 02:00:32,127 INFO L430 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:32,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:32,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1659102407, now seen corresponding path program 388 times [2021-05-22 02:00:32,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:32,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156367978] [2021-05-22 02:00:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:32,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:32,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156367978] [2021-05-22 02:00:32,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156367978] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:32,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:32,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:32,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105384077] [2021-05-22 02:00:32,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:32,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:32,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:32,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:32,244 INFO L87 Difference]: Start difference. First operand 5191 states and 24645 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:32,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:32,347 INFO L93 Difference]: Finished difference Result 10903 states and 48739 transitions. [2021-05-22 02:00:32,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:32,347 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:32,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:32,377 INFO L225 Difference]: With dead ends: 10903 [2021-05-22 02:00:32,377 INFO L226 Difference]: Without dead ends: 10456 [2021-05-22 02:00:32,377 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:32,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10456 states. [2021-05-22 02:00:32,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10456 to 5159. [2021-05-22 02:00:32,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5159 states, 5158 states have (on average 4.7531989143078714) internal successors, (24517), 5158 states have internal predecessors, (24517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:32,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5159 states to 5159 states and 24517 transitions. [2021-05-22 02:00:32,623 INFO L78 Accepts]: Start accepts. Automaton has 5159 states and 24517 transitions. Word has length 29 [2021-05-22 02:00:32,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:32,623 INFO L482 AbstractCegarLoop]: Abstraction has 5159 states and 24517 transitions. [2021-05-22 02:00:32,623 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:32,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5159 states and 24517 transitions. [2021-05-22 02:00:32,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:32,632 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:32,632 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:32,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2021-05-22 02:00:32,633 INFO L430 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:32,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:32,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1914261339, now seen corresponding path program 389 times [2021-05-22 02:00:32,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:32,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596133057] [2021-05-22 02:00:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:32,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:32,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:32,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596133057] [2021-05-22 02:00:32,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596133057] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:32,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:32,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:32,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146326646] [2021-05-22 02:00:32,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:32,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:32,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:32,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:32,754 INFO L87 Difference]: Start difference. First operand 5159 states and 24517 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:32,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:32,854 INFO L93 Difference]: Finished difference Result 11205 states and 50033 transitions. [2021-05-22 02:00:32,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:32,855 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:32,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:32,884 INFO L225 Difference]: With dead ends: 11205 [2021-05-22 02:00:32,884 INFO L226 Difference]: Without dead ends: 10663 [2021-05-22 02:00:32,884 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:33,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10663 states. [2021-05-22 02:00:33,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10663 to 5239. [2021-05-22 02:00:33,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5239 states, 5238 states have (on average 4.735586101565483) internal successors, (24805), 5238 states have internal predecessors, (24805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:33,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5239 states to 5239 states and 24805 transitions. [2021-05-22 02:00:33,125 INFO L78 Accepts]: Start accepts. Automaton has 5239 states and 24805 transitions. Word has length 29 [2021-05-22 02:00:33,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:33,126 INFO L482 AbstractCegarLoop]: Abstraction has 5239 states and 24805 transitions. [2021-05-22 02:00:33,126 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:33,126 INFO L276 IsEmpty]: Start isEmpty. Operand 5239 states and 24805 transitions. [2021-05-22 02:00:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:33,135 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:33,135 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:33,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2021-05-22 02:00:33,135 INFO L430 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:33,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:33,135 INFO L82 PathProgramCache]: Analyzing trace with hash -2121069305, now seen corresponding path program 390 times [2021-05-22 02:00:33,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:33,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502090882] [2021-05-22 02:00:33,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:33,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:33,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:33,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502090882] [2021-05-22 02:00:33,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502090882] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:33,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:33,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:33,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581951454] [2021-05-22 02:00:33,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:33,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:33,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:33,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:33,257 INFO L87 Difference]: Start difference. First operand 5239 states and 24805 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:33,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:33,352 INFO L93 Difference]: Finished difference Result 11078 states and 49426 transitions. [2021-05-22 02:00:33,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:33,352 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:33,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:33,383 INFO L225 Difference]: With dead ends: 11078 [2021-05-22 02:00:33,383 INFO L226 Difference]: Without dead ends: 10551 [2021-05-22 02:00:33,383 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:33,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10551 states. [2021-05-22 02:00:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10551 to 5127. [2021-05-22 02:00:33,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 5126 states have (on average 4.757900897385876) internal successors, (24389), 5126 states have internal predecessors, (24389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:33,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 24389 transitions. [2021-05-22 02:00:33,624 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 24389 transitions. Word has length 29 [2021-05-22 02:00:33,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:33,624 INFO L482 AbstractCegarLoop]: Abstraction has 5127 states and 24389 transitions. [2021-05-22 02:00:33,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:33,624 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 24389 transitions. [2021-05-22 02:00:33,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:33,633 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:33,633 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:33,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2021-05-22 02:00:33,633 INFO L430 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:33,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:33,633 INFO L82 PathProgramCache]: Analyzing trace with hash 218443467, now seen corresponding path program 391 times [2021-05-22 02:00:33,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:33,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850980672] [2021-05-22 02:00:33,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:33,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:33,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:33,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850980672] [2021-05-22 02:00:33,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850980672] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:33,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:33,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:33,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58582348] [2021-05-22 02:00:33,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:33,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:33,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:33,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:33,757 INFO L87 Difference]: Start difference. First operand 5127 states and 24389 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:33,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:33,867 INFO L93 Difference]: Finished difference Result 11186 states and 50054 transitions. [2021-05-22 02:00:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:33,867 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:33,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:33,899 INFO L225 Difference]: With dead ends: 11186 [2021-05-22 02:00:33,900 INFO L226 Difference]: Without dead ends: 10771 [2021-05-22 02:00:33,900 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:34,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2021-05-22 02:00:34,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 5247. [2021-05-22 02:00:34,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 5246 states have (on average 4.748951582157835) internal successors, (24913), 5246 states have internal predecessors, (24913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:34,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 24913 transitions. [2021-05-22 02:00:34,159 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 24913 transitions. Word has length 29 [2021-05-22 02:00:34,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:34,160 INFO L482 AbstractCegarLoop]: Abstraction has 5247 states and 24913 transitions. [2021-05-22 02:00:34,160 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:34,160 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 24913 transitions. [2021-05-22 02:00:34,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:34,169 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:34,169 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:34,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2021-05-22 02:00:34,169 INFO L430 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:34,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:34,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1973264075, now seen corresponding path program 392 times [2021-05-22 02:00:34,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:34,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095392239] [2021-05-22 02:00:34,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:34,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:34,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095392239] [2021-05-22 02:00:34,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095392239] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:34,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:34,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:34,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724118459] [2021-05-22 02:00:34,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:34,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:34,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:34,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:34,296 INFO L87 Difference]: Start difference. First operand 5247 states and 24913 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:34,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:34,438 INFO L93 Difference]: Finished difference Result 11313 states and 50533 transitions. [2021-05-22 02:00:34,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:34,438 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:34,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:34,476 INFO L225 Difference]: With dead ends: 11313 [2021-05-22 02:00:34,477 INFO L226 Difference]: Without dead ends: 10691 [2021-05-22 02:00:34,477 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 166.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:34,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10691 states. [2021-05-22 02:00:34,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10691 to 5167. [2021-05-22 02:00:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.752806813782423) internal successors, (24553), 5166 states have internal predecessors, (24553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:34,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24553 transitions. [2021-05-22 02:00:34,727 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24553 transitions. Word has length 29 [2021-05-22 02:00:34,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:34,727 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24553 transitions. [2021-05-22 02:00:34,727 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:34,727 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24553 transitions. [2021-05-22 02:00:34,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:34,736 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:34,736 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:34,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2021-05-22 02:00:34,737 INFO L430 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:34,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:34,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1900491275, now seen corresponding path program 393 times [2021-05-22 02:00:34,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:34,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793894783] [2021-05-22 02:00:34,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:34,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:34,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:34,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793894783] [2021-05-22 02:00:34,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793894783] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:34,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:34,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:34,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631660132] [2021-05-22 02:00:34,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:34,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:34,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:34,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:34,846 INFO L87 Difference]: Start difference. First operand 5167 states and 24553 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:34,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:34,967 INFO L93 Difference]: Finished difference Result 11083 states and 49595 transitions. [2021-05-22 02:00:34,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:34,967 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:34,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:34,997 INFO L225 Difference]: With dead ends: 11083 [2021-05-22 02:00:34,997 INFO L226 Difference]: Without dead ends: 10668 [2021-05-22 02:00:34,997 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:35,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10668 states. [2021-05-22 02:00:35,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10668 to 5215. [2021-05-22 02:00:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5214 states have (on average 4.742807825086306) internal successors, (24729), 5214 states have internal predecessors, (24729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:35,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 24729 transitions. [2021-05-22 02:00:35,245 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 24729 transitions. Word has length 29 [2021-05-22 02:00:35,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:35,245 INFO L482 AbstractCegarLoop]: Abstraction has 5215 states and 24729 transitions. [2021-05-22 02:00:35,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:35,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 24729 transitions. [2021-05-22 02:00:35,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:35,254 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:35,254 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:35,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2021-05-22 02:00:35,254 INFO L430 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:35,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:35,254 INFO L82 PathProgramCache]: Analyzing trace with hash 770138413, now seen corresponding path program 394 times [2021-05-22 02:00:35,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:35,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296065303] [2021-05-22 02:00:35,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:35,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:35,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296065303] [2021-05-22 02:00:35,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296065303] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:35,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:35,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:35,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695982211] [2021-05-22 02:00:35,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:35,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:35,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:35,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:35,363 INFO L87 Difference]: Start difference. First operand 5215 states and 24729 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:35,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:35,488 INFO L93 Difference]: Finished difference Result 11139 states and 49799 transitions. [2021-05-22 02:00:35,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:35,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:35,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:35,519 INFO L225 Difference]: With dead ends: 11139 [2021-05-22 02:00:35,519 INFO L226 Difference]: Without dead ends: 10620 [2021-05-22 02:00:35,519 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:35,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10620 states. [2021-05-22 02:00:35,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10620 to 5167. [2021-05-22 02:00:35,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.748161053039102) internal successors, (24529), 5166 states have internal predecessors, (24529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:35,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24529 transitions. [2021-05-22 02:00:35,776 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24529 transitions. Word has length 29 [2021-05-22 02:00:35,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:35,776 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24529 transitions. [2021-05-22 02:00:35,776 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:35,776 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24529 transitions. [2021-05-22 02:00:35,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:35,785 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:35,785 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:35,785 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2021-05-22 02:00:35,785 INFO L430 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:35,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:35,785 INFO L82 PathProgramCache]: Analyzing trace with hash 836768045, now seen corresponding path program 395 times [2021-05-22 02:00:35,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:35,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132584889] [2021-05-22 02:00:35,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:35,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:35,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:35,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132584889] [2021-05-22 02:00:35,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132584889] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:35,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:35,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:35,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572767475] [2021-05-22 02:00:35,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:35,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:35,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:35,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:35,907 INFO L87 Difference]: Start difference. First operand 5167 states and 24529 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:36,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:36,014 INFO L93 Difference]: Finished difference Result 11397 states and 50909 transitions. [2021-05-22 02:00:36,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:36,014 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:36,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:36,043 INFO L225 Difference]: With dead ends: 11397 [2021-05-22 02:00:36,043 INFO L226 Difference]: Without dead ends: 10855 [2021-05-22 02:00:36,043 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:36,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10855 states. [2021-05-22 02:00:36,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10855 to 5275. [2021-05-22 02:00:36,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5275 states, 5274 states have (on average 4.726772847933257) internal successors, (24929), 5274 states have internal predecessors, (24929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:36,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 24929 transitions. [2021-05-22 02:00:36,288 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 24929 transitions. Word has length 29 [2021-05-22 02:00:36,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:36,288 INFO L482 AbstractCegarLoop]: Abstraction has 5275 states and 24929 transitions. [2021-05-22 02:00:36,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:36,288 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 24929 transitions. [2021-05-22 02:00:36,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:36,297 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:36,297 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:36,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2021-05-22 02:00:36,298 INFO L430 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:36,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:36,298 INFO L82 PathProgramCache]: Analyzing trace with hash 747008395, now seen corresponding path program 396 times [2021-05-22 02:00:36,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:36,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596997832] [2021-05-22 02:00:36,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:36,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:36,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:36,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596997832] [2021-05-22 02:00:36,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596997832] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:36,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:36,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:36,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31482532] [2021-05-22 02:00:36,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:36,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:36,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:36,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:36,417 INFO L87 Difference]: Start difference. First operand 5275 states and 24929 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:36,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:36,539 INFO L93 Difference]: Finished difference Result 11326 states and 50526 transitions. [2021-05-22 02:00:36,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:36,539 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:36,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:36,568 INFO L225 Difference]: With dead ends: 11326 [2021-05-22 02:00:36,568 INFO L226 Difference]: Without dead ends: 10707 [2021-05-22 02:00:36,568 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:36,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10707 states. [2021-05-22 02:00:36,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10707 to 5127. [2021-05-22 02:00:36,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 5126 states have (on average 4.7547795552087395) internal successors, (24373), 5126 states have internal predecessors, (24373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:36,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 24373 transitions. [2021-05-22 02:00:36,806 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 24373 transitions. Word has length 29 [2021-05-22 02:00:36,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:36,807 INFO L482 AbstractCegarLoop]: Abstraction has 5127 states and 24373 transitions. [2021-05-22 02:00:36,807 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:36,807 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 24373 transitions. [2021-05-22 02:00:36,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:36,815 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:36,815 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:36,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2021-05-22 02:00:36,815 INFO L430 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:36,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:36,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1407092137, now seen corresponding path program 397 times [2021-05-22 02:00:36,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:36,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868019874] [2021-05-22 02:00:36,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:36,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:36,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:36,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868019874] [2021-05-22 02:00:36,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868019874] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:36,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:36,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:36,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216796244] [2021-05-22 02:00:36,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:36,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:36,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:36,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:36,918 INFO L87 Difference]: Start difference. First operand 5127 states and 24373 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:37,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:37,033 INFO L93 Difference]: Finished difference Result 10752 states and 48128 transitions. [2021-05-22 02:00:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:37,033 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:37,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:37,061 INFO L225 Difference]: With dead ends: 10752 [2021-05-22 02:00:37,061 INFO L226 Difference]: Without dead ends: 10337 [2021-05-22 02:00:37,061 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:37,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10337 states. [2021-05-22 02:00:37,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10337 to 5175. [2021-05-22 02:00:37,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 5174 states have (on average 4.747777348279861) internal successors, (24565), 5174 states have internal predecessors, (24565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:37,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 24565 transitions. [2021-05-22 02:00:37,296 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 24565 transitions. Word has length 29 [2021-05-22 02:00:37,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:37,296 INFO L482 AbstractCegarLoop]: Abstraction has 5175 states and 24565 transitions. [2021-05-22 02:00:37,297 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:37,297 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 24565 transitions. [2021-05-22 02:00:37,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:37,305 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:37,305 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:37,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2021-05-22 02:00:37,306 INFO L430 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:37,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:37,306 INFO L82 PathProgramCache]: Analyzing trace with hash -995028857, now seen corresponding path program 398 times [2021-05-22 02:00:37,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:37,306 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67534819] [2021-05-22 02:00:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:37,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:37,408 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:37,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67534819] [2021-05-22 02:00:37,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67534819] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:37,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:37,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:37,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853758797] [2021-05-22 02:00:37,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:37,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:37,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:37,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:37,409 INFO L87 Difference]: Start difference. First operand 5175 states and 24565 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:37,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:37,523 INFO L93 Difference]: Finished difference Result 10752 states and 48096 transitions. [2021-05-22 02:00:37,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:37,523 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:37,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:37,550 INFO L225 Difference]: With dead ends: 10752 [2021-05-22 02:00:37,551 INFO L226 Difference]: Without dead ends: 10305 [2021-05-22 02:00:37,551 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 109.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:37,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10305 states. [2021-05-22 02:00:37,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10305 to 5143. [2021-05-22 02:00:37,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.7524309607156745) internal successors, (24437), 5142 states have internal predecessors, (24437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:37,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24437 transitions. [2021-05-22 02:00:37,788 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24437 transitions. Word has length 29 [2021-05-22 02:00:37,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:37,788 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24437 transitions. [2021-05-22 02:00:37,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:37,788 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24437 transitions. [2021-05-22 02:00:37,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:37,797 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:37,797 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:37,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2021-05-22 02:00:37,797 INFO L430 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:37,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:37,798 INFO L82 PathProgramCache]: Analyzing trace with hash 233132427, now seen corresponding path program 399 times [2021-05-22 02:00:37,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:37,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836734966] [2021-05-22 02:00:37,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:37,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:37,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836734966] [2021-05-22 02:00:37,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836734966] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:37,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:37,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:37,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721738443] [2021-05-22 02:00:37,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:37,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:37,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:37,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:37,933 INFO L87 Difference]: Start difference. First operand 5143 states and 24437 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:38,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:38,099 INFO L93 Difference]: Finished difference Result 10824 states and 48444 transitions. [2021-05-22 02:00:38,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:38,099 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:38,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:38,135 INFO L225 Difference]: With dead ends: 10824 [2021-05-22 02:00:38,135 INFO L226 Difference]: Without dead ends: 10409 [2021-05-22 02:00:38,135 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 165.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:38,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10409 states. [2021-05-22 02:00:38,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10409 to 5191. [2021-05-22 02:00:38,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.742389210019268) internal successors, (24613), 5190 states have internal predecessors, (24613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:38,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24613 transitions. [2021-05-22 02:00:38,390 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24613 transitions. Word has length 29 [2021-05-22 02:00:38,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:38,390 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24613 transitions. [2021-05-22 02:00:38,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:38,391 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24613 transitions. [2021-05-22 02:00:38,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:38,399 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:38,399 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:38,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2021-05-22 02:00:38,399 INFO L430 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:38,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:38,400 INFO L82 PathProgramCache]: Analyzing trace with hash 647025867, now seen corresponding path program 400 times [2021-05-22 02:00:38,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:38,400 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926784359] [2021-05-22 02:00:38,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:38,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:38,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:38,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926784359] [2021-05-22 02:00:38,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926784359] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:38,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:38,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:38,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669010885] [2021-05-22 02:00:38,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:38,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:38,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:38,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:38,501 INFO L87 Difference]: Start difference. First operand 5191 states and 24613 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:38,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:38,610 INFO L93 Difference]: Finished difference Result 10880 states and 48648 transitions. [2021-05-22 02:00:38,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:38,610 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:38,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:38,638 INFO L225 Difference]: With dead ends: 10880 [2021-05-22 02:00:38,638 INFO L226 Difference]: Without dead ends: 10361 [2021-05-22 02:00:38,638 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:38,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10361 states. [2021-05-22 02:00:38,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10361 to 5143. [2021-05-22 02:00:38,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.749319330999611) internal successors, (24421), 5142 states have internal predecessors, (24421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:38,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24421 transitions. [2021-05-22 02:00:38,881 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24421 transitions. Word has length 29 [2021-05-22 02:00:38,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:38,881 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24421 transitions. [2021-05-22 02:00:38,881 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:38,881 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24421 transitions. [2021-05-22 02:00:38,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:38,890 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:38,890 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:38,890 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2021-05-22 02:00:38,890 INFO L430 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:38,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:38,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1206902023, now seen corresponding path program 401 times [2021-05-22 02:00:38,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:38,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420024642] [2021-05-22 02:00:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:39,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:39,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:39,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420024642] [2021-05-22 02:00:39,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420024642] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:39,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:39,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:39,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340717083] [2021-05-22 02:00:39,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:39,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:39,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:39,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:39,004 INFO L87 Difference]: Start difference. First operand 5143 states and 24421 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:39,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:39,098 INFO L93 Difference]: Finished difference Result 10824 states and 48428 transitions. [2021-05-22 02:00:39,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:39,098 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:39,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:39,126 INFO L225 Difference]: With dead ends: 10824 [2021-05-22 02:00:39,126 INFO L226 Difference]: Without dead ends: 10409 [2021-05-22 02:00:39,126 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:39,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10409 states. [2021-05-22 02:00:39,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10409 to 5191. [2021-05-22 02:00:39,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.739306358381503) internal successors, (24597), 5190 states have internal predecessors, (24597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:39,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24597 transitions. [2021-05-22 02:00:39,368 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24597 transitions. Word has length 29 [2021-05-22 02:00:39,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:39,368 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24597 transitions. [2021-05-22 02:00:39,368 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:39,368 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24597 transitions. [2021-05-22 02:00:39,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:39,378 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:39,378 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:39,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2021-05-22 02:00:39,378 INFO L430 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:39,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:39,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1000094057, now seen corresponding path program 402 times [2021-05-22 02:00:39,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:39,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321190471] [2021-05-22 02:00:39,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:39,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:39,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:39,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321190471] [2021-05-22 02:00:39,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321190471] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:39,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:39,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:39,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810436730] [2021-05-22 02:00:39,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:39,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:39,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:39,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:39,493 INFO L87 Difference]: Start difference. First operand 5191 states and 24597 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:39,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:39,619 INFO L93 Difference]: Finished difference Result 10880 states and 48632 transitions. [2021-05-22 02:00:39,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:39,619 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:39,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:39,647 INFO L225 Difference]: With dead ends: 10880 [2021-05-22 02:00:39,647 INFO L226 Difference]: Without dead ends: 10345 [2021-05-22 02:00:39,647 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:39,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10345 states. [2021-05-22 02:00:39,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10345 to 5127. [2021-05-22 02:00:39,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5127 states, 5126 states have (on average 4.753218884120171) internal successors, (24365), 5126 states have internal predecessors, (24365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:39,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5127 states to 5127 states and 24365 transitions. [2021-05-22 02:00:39,885 INFO L78 Accepts]: Start accepts. Automaton has 5127 states and 24365 transitions. Word has length 29 [2021-05-22 02:00:39,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:39,885 INFO L482 AbstractCegarLoop]: Abstraction has 5127 states and 24365 transitions. [2021-05-22 02:00:39,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:39,885 INFO L276 IsEmpty]: Start isEmpty. Operand 5127 states and 24365 transitions. [2021-05-22 02:00:39,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:39,893 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:39,894 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:39,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2021-05-22 02:00:39,894 INFO L430 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:39,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:39,894 INFO L82 PathProgramCache]: Analyzing trace with hash -213718683, now seen corresponding path program 403 times [2021-05-22 02:00:39,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:39,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504397847] [2021-05-22 02:00:39,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:40,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:40,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:40,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504397847] [2021-05-22 02:00:40,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504397847] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:40,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:40,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:40,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667350113] [2021-05-22 02:00:40,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:40,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:40,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:40,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:40,014 INFO L87 Difference]: Start difference. First operand 5127 states and 24365 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:40,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:40,107 INFO L93 Difference]: Finished difference Result 11313 states and 50557 transitions. [2021-05-22 02:00:40,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:40,107 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:40,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:40,136 INFO L225 Difference]: With dead ends: 11313 [2021-05-22 02:00:40,136 INFO L226 Difference]: Without dead ends: 10771 [2021-05-22 02:00:40,136 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:40,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2021-05-22 02:00:40,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 5247. [2021-05-22 02:00:40,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5247 states, 5246 states have (on average 4.738276782310332) internal successors, (24857), 5246 states have internal predecessors, (24857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:40,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5247 states to 5247 states and 24857 transitions. [2021-05-22 02:00:40,378 INFO L78 Accepts]: Start accepts. Automaton has 5247 states and 24857 transitions. Word has length 29 [2021-05-22 02:00:40,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:40,379 INFO L482 AbstractCegarLoop]: Abstraction has 5247 states and 24857 transitions. [2021-05-22 02:00:40,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:40,379 INFO L276 IsEmpty]: Start isEmpty. Operand 5247 states and 24857 transitions. [2021-05-22 02:00:40,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:40,388 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:40,388 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:40,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2021-05-22 02:00:40,388 INFO L430 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:40,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:40,388 INFO L82 PathProgramCache]: Analyzing trace with hash -420526649, now seen corresponding path program 404 times [2021-05-22 02:00:40,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:40,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929472474] [2021-05-22 02:00:40,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:40,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:40,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929472474] [2021-05-22 02:00:40,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929472474] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:40,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:40,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:40,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005601837] [2021-05-22 02:00:40,505 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:40,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:40,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:40,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:40,506 INFO L87 Difference]: Start difference. First operand 5247 states and 24857 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:40,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:40,603 INFO L93 Difference]: Finished difference Result 11186 states and 49950 transitions. [2021-05-22 02:00:40,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:40,603 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:40,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:40,631 INFO L225 Difference]: With dead ends: 11186 [2021-05-22 02:00:40,632 INFO L226 Difference]: Without dead ends: 10691 [2021-05-22 02:00:40,632 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:40,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10691 states. [2021-05-22 02:00:40,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10691 to 5167. [2021-05-22 02:00:40,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.748161053039102) internal successors, (24529), 5166 states have internal predecessors, (24529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24529 transitions. [2021-05-22 02:00:40,872 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24529 transitions. Word has length 29 [2021-05-22 02:00:40,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:40,872 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24529 transitions. [2021-05-22 02:00:40,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:40,872 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24529 transitions. [2021-05-22 02:00:40,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:40,881 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:40,881 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:40,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2021-05-22 02:00:40,881 INFO L430 AbstractCegarLoop]: === Iteration 410 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:40,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:40,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1387678393, now seen corresponding path program 405 times [2021-05-22 02:00:40,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:40,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11122374] [2021-05-22 02:00:40,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:41,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:41,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11122374] [2021-05-22 02:00:41,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11122374] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:41,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:41,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:41,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428217966] [2021-05-22 02:00:41,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:41,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:41,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:41,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:41,011 INFO L87 Difference]: Start difference. First operand 5167 states and 24529 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:41,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:41,106 INFO L93 Difference]: Finished difference Result 11397 states and 50909 transitions. [2021-05-22 02:00:41,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:41,107 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:41,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:41,136 INFO L225 Difference]: With dead ends: 11397 [2021-05-22 02:00:41,136 INFO L226 Difference]: Without dead ends: 10855 [2021-05-22 02:00:41,136 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:41,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10855 states. [2021-05-22 02:00:41,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10855 to 5275. [2021-05-22 02:00:41,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5275 states, 5274 states have (on average 4.726772847933257) internal successors, (24929), 5274 states have internal predecessors, (24929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:41,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 24929 transitions. [2021-05-22 02:00:41,382 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 24929 transitions. Word has length 29 [2021-05-22 02:00:41,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:41,382 INFO L482 AbstractCegarLoop]: Abstraction has 5275 states and 24929 transitions. [2021-05-22 02:00:41,382 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:41,382 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 24929 transitions. [2021-05-22 02:00:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:41,391 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:41,391 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:41,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2021-05-22 02:00:41,391 INFO L430 AbstractCegarLoop]: === Iteration 411 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:41,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:41,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1668986055, now seen corresponding path program 406 times [2021-05-22 02:00:41,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:41,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121700174] [2021-05-22 02:00:41,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:41,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:41,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:41,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121700174] [2021-05-22 02:00:41,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121700174] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:41,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:41,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:41,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395261804] [2021-05-22 02:00:41,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:41,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:41,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:41,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:41,513 INFO L87 Difference]: Start difference. First operand 5275 states and 24929 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:41,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:41,626 INFO L93 Difference]: Finished difference Result 11326 states and 50526 transitions. [2021-05-22 02:00:41,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:41,627 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:41,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:41,656 INFO L225 Difference]: With dead ends: 11326 [2021-05-22 02:00:41,656 INFO L226 Difference]: Without dead ends: 10747 [2021-05-22 02:00:41,656 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:41,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10747 states. [2021-05-22 02:00:41,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10747 to 5167. [2021-05-22 02:00:41,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.7404181184668985) internal successors, (24489), 5166 states have internal predecessors, (24489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:41,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24489 transitions. [2021-05-22 02:00:41,899 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24489 transitions. Word has length 29 [2021-05-22 02:00:41,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:41,899 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24489 transitions. [2021-05-22 02:00:41,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:41,899 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24489 transitions. [2021-05-22 02:00:41,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:41,908 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:41,908 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:41,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2021-05-22 02:00:41,908 INFO L430 AbstractCegarLoop]: === Iteration 412 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:41,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:41,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1314365609, now seen corresponding path program 407 times [2021-05-22 02:00:41,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:41,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084764939] [2021-05-22 02:00:41,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:42,034 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:42,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084764939] [2021-05-22 02:00:42,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084764939] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:42,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:42,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:42,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596302008] [2021-05-22 02:00:42,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:42,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:42,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:42,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:42,035 INFO L87 Difference]: Start difference. First operand 5167 states and 24489 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:42,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:42,132 INFO L93 Difference]: Finished difference Result 11083 states and 49531 transitions. [2021-05-22 02:00:42,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:42,132 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:42,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:42,160 INFO L225 Difference]: With dead ends: 11083 [2021-05-22 02:00:42,160 INFO L226 Difference]: Without dead ends: 10668 [2021-05-22 02:00:42,160 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:42,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10668 states. [2021-05-22 02:00:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10668 to 5215. [2021-05-22 02:00:42,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5214 states have (on average 4.730533179900268) internal successors, (24665), 5214 states have internal predecessors, (24665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:42,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 24665 transitions. [2021-05-22 02:00:42,401 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 24665 transitions. Word has length 29 [2021-05-22 02:00:42,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:42,401 INFO L482 AbstractCegarLoop]: Abstraction has 5215 states and 24665 transitions. [2021-05-22 02:00:42,401 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:42,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 24665 transitions. [2021-05-22 02:00:42,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:42,410 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:42,410 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:42,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2021-05-22 02:00:42,410 INFO L430 AbstractCegarLoop]: === Iteration 413 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:42,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:42,410 INFO L82 PathProgramCache]: Analyzing trace with hash -801714041, now seen corresponding path program 408 times [2021-05-22 02:00:42,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:42,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635907140] [2021-05-22 02:00:42,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:42,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:42,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:42,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635907140] [2021-05-22 02:00:42,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635907140] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:42,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:42,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:42,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796601178] [2021-05-22 02:00:42,532 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:42,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:42,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:42,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:42,532 INFO L87 Difference]: Start difference. First operand 5215 states and 24665 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:42,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:42,646 INFO L93 Difference]: Finished difference Result 11139 states and 49735 transitions. [2021-05-22 02:00:42,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:42,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:42,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:42,675 INFO L225 Difference]: With dead ends: 11139 [2021-05-22 02:00:42,676 INFO L226 Difference]: Without dead ends: 10564 [2021-05-22 02:00:42,676 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:42,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10564 states. [2021-05-22 02:00:42,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10564 to 5111. [2021-05-22 02:00:42,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5111 states, 5110 states have (on average 4.757142857142857) internal successors, (24309), 5110 states have internal predecessors, (24309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:42,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5111 states to 5111 states and 24309 transitions. [2021-05-22 02:00:42,920 INFO L78 Accepts]: Start accepts. Automaton has 5111 states and 24309 transitions. Word has length 29 [2021-05-22 02:00:42,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:42,920 INFO L482 AbstractCegarLoop]: Abstraction has 5111 states and 24309 transitions. [2021-05-22 02:00:42,920 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:42,920 INFO L276 IsEmpty]: Start isEmpty. Operand 5111 states and 24309 transitions. [2021-05-22 02:00:42,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:42,929 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:42,929 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:42,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2021-05-22 02:00:42,929 INFO L430 AbstractCegarLoop]: === Iteration 414 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:42,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:42,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1978955863, now seen corresponding path program 409 times [2021-05-22 02:00:42,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:42,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465882676] [2021-05-22 02:00:42,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:43,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:43,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465882676] [2021-05-22 02:00:43,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465882676] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:43,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:43,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:43,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114153822] [2021-05-22 02:00:43,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:43,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:43,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:43,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:43,043 INFO L87 Difference]: Start difference. First operand 5111 states and 24309 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:43,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:43,154 INFO L93 Difference]: Finished difference Result 11360 states and 50901 transitions. [2021-05-22 02:00:43,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:43,154 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:43,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:43,183 INFO L225 Difference]: With dead ends: 11360 [2021-05-22 02:00:43,183 INFO L226 Difference]: Without dead ends: 10945 [2021-05-22 02:00:43,183 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:43,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10945 states. [2021-05-22 02:00:43,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10945 to 5251. [2021-05-22 02:00:43,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 4.751428571428572) internal successors, (24945), 5250 states have internal predecessors, (24945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:43,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 24945 transitions. [2021-05-22 02:00:43,431 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 24945 transitions. Word has length 29 [2021-05-22 02:00:43,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:43,431 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 24945 transitions. [2021-05-22 02:00:43,431 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:43,431 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 24945 transitions. [2021-05-22 02:00:43,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:43,440 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:43,440 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:43,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2021-05-22 02:00:43,440 INFO L430 AbstractCegarLoop]: === Iteration 415 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:43,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:43,440 INFO L82 PathProgramCache]: Analyzing trace with hash -224135255, now seen corresponding path program 410 times [2021-05-22 02:00:43,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:43,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881979289] [2021-05-22 02:00:43,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:43,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:43,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:43,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881979289] [2021-05-22 02:00:43,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881979289] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:43,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:43,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:43,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507010959] [2021-05-22 02:00:43,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:43,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:43,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:43,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:43,553 INFO L87 Difference]: Start difference. First operand 5251 states and 24945 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:43,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:43,653 INFO L93 Difference]: Finished difference Result 11487 states and 51380 transitions. [2021-05-22 02:00:43,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:43,653 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:43,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:43,683 INFO L225 Difference]: With dead ends: 11487 [2021-05-22 02:00:43,683 INFO L226 Difference]: Without dead ends: 10865 [2021-05-22 02:00:43,683 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:43,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10865 states. [2021-05-22 02:00:43,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10865 to 5171. [2021-05-22 02:00:43,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.75531914893617) internal successors, (24585), 5170 states have internal predecessors, (24585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24585 transitions. [2021-05-22 02:00:43,925 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24585 transitions. Word has length 29 [2021-05-22 02:00:43,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:43,925 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24585 transitions. [2021-05-22 02:00:43,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24585 transitions. [2021-05-22 02:00:43,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:43,934 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:43,934 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:43,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2021-05-22 02:00:43,935 INFO L430 AbstractCegarLoop]: === Iteration 416 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:43,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:43,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1983867625, now seen corresponding path program 411 times [2021-05-22 02:00:43,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:43,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368233808] [2021-05-22 02:00:43,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:44,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:44,051 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:44,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368233808] [2021-05-22 02:00:44,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368233808] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:44,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:44,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:44,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533704216] [2021-05-22 02:00:44,052 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:44,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:44,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:44,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:44,052 INFO L87 Difference]: Start difference. First operand 5171 states and 24585 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:44,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:44,167 INFO L93 Difference]: Finished difference Result 11261 states and 50454 transitions. [2021-05-22 02:00:44,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:44,167 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:44,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:44,196 INFO L225 Difference]: With dead ends: 11261 [2021-05-22 02:00:44,196 INFO L226 Difference]: Without dead ends: 10846 [2021-05-22 02:00:44,196 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:44,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10846 states. [2021-05-22 02:00:44,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10846 to 5219. [2021-05-22 02:00:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5219 states, 5218 states have (on average 4.745304714449981) internal successors, (24761), 5218 states have internal predecessors, (24761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:44,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 24761 transitions. [2021-05-22 02:00:44,440 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 24761 transitions. Word has length 29 [2021-05-22 02:00:44,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:44,440 INFO L482 AbstractCegarLoop]: Abstraction has 5219 states and 24761 transitions. [2021-05-22 02:00:44,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:44,440 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 24761 transitions. [2021-05-22 02:00:44,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:44,450 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:44,450 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:44,450 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2021-05-22 02:00:44,450 INFO L430 AbstractCegarLoop]: === Iteration 417 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:44,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:44,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1469186699, now seen corresponding path program 412 times [2021-05-22 02:00:44,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:44,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824506522] [2021-05-22 02:00:44,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:44,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:44,566 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:44,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824506522] [2021-05-22 02:00:44,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824506522] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:44,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:44,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:44,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276094164] [2021-05-22 02:00:44,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:44,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:44,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:44,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:44,567 INFO L87 Difference]: Start difference. First operand 5219 states and 24761 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:44,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:44,681 INFO L93 Difference]: Finished difference Result 11321 states and 50670 transitions. [2021-05-22 02:00:44,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:44,681 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:44,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:44,710 INFO L225 Difference]: With dead ends: 11321 [2021-05-22 02:00:44,711 INFO L226 Difference]: Without dead ends: 10798 [2021-05-22 02:00:44,711 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:44,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10798 states. [2021-05-22 02:00:44,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10798 to 5171. [2021-05-22 02:00:44,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.750676982591877) internal successors, (24561), 5170 states have internal predecessors, (24561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:45,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24561 transitions. [2021-05-22 02:00:45,005 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24561 transitions. Word has length 29 [2021-05-22 02:00:45,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:45,005 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24561 transitions. [2021-05-22 02:00:45,005 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:45,005 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24561 transitions. [2021-05-22 02:00:45,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:45,014 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:45,014 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:45,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2021-05-22 02:00:45,014 INFO L430 AbstractCegarLoop]: === Iteration 418 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:45,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:45,015 INFO L82 PathProgramCache]: Analyzing trace with hash -2086952309, now seen corresponding path program 413 times [2021-05-22 02:00:45,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:45,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401105529] [2021-05-22 02:00:45,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:45,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:45,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:45,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401105529] [2021-05-22 02:00:45,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401105529] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:45,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:45,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:45,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956546719] [2021-05-22 02:00:45,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:45,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:45,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:45,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:45,120 INFO L87 Difference]: Start difference. First operand 5171 states and 24561 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:45,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:45,219 INFO L93 Difference]: Finished difference Result 11577 states and 51775 transitions. [2021-05-22 02:00:45,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:45,219 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:45,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:45,248 INFO L225 Difference]: With dead ends: 11577 [2021-05-22 02:00:45,248 INFO L226 Difference]: Without dead ends: 11035 [2021-05-22 02:00:45,248 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 110.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:45,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11035 states. [2021-05-22 02:00:45,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11035 to 5281. [2021-05-22 02:00:45,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 5280 states have (on average 4.728409090909091) internal successors, (24966), 5280 states have internal predecessors, (24966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:45,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 24966 transitions. [2021-05-22 02:00:45,492 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 24966 transitions. Word has length 29 [2021-05-22 02:00:45,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:45,492 INFO L482 AbstractCegarLoop]: Abstraction has 5281 states and 24966 transitions. [2021-05-22 02:00:45,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:45,492 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 24966 transitions. [2021-05-22 02:00:45,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:45,501 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:45,501 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:45,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2021-05-22 02:00:45,501 INFO L430 AbstractCegarLoop]: === Iteration 419 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:45,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:45,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1467062889, now seen corresponding path program 414 times [2021-05-22 02:00:45,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:45,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500555] [2021-05-22 02:00:45,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:45,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:45,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:45,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500555] [2021-05-22 02:00:45,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500555] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:45,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:45,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:45,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70552533] [2021-05-22 02:00:45,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:45,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:45,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:45,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:45,605 INFO L87 Difference]: Start difference. First operand 5281 states and 24966 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:45,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:45,714 INFO L93 Difference]: Finished difference Result 11510 states and 51402 transitions. [2021-05-22 02:00:45,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:45,714 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:45,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:45,743 INFO L225 Difference]: With dead ends: 11510 [2021-05-22 02:00:45,744 INFO L226 Difference]: Without dead ends: 10885 [2021-05-22 02:00:45,744 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:45,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10885 states. [2021-05-22 02:00:45,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10885 to 5131. [2021-05-22 02:00:45,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.756530214424951) internal successors, (24401), 5130 states have internal predecessors, (24401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24401 transitions. [2021-05-22 02:00:45,994 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24401 transitions. Word has length 29 [2021-05-22 02:00:45,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:45,994 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24401 transitions. [2021-05-22 02:00:45,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:45,994 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24401 transitions. [2021-05-22 02:00:46,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:46,005 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:46,005 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:46,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable418 [2021-05-22 02:00:46,007 INFO L430 AbstractCegarLoop]: === Iteration 420 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:46,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:46,007 INFO L82 PathProgramCache]: Analyzing trace with hash 270830347, now seen corresponding path program 415 times [2021-05-22 02:00:46,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:46,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346615127] [2021-05-22 02:00:46,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:46,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:46,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:46,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346615127] [2021-05-22 02:00:46,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346615127] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:46,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:46,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:46,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194906276] [2021-05-22 02:00:46,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:46,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:46,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:46,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:46,124 INFO L87 Difference]: Start difference. First operand 5131 states and 24401 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:46,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:46,238 INFO L93 Difference]: Finished difference Result 11354 states and 50862 transitions. [2021-05-22 02:00:46,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:46,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:46,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:46,267 INFO L225 Difference]: With dead ends: 11354 [2021-05-22 02:00:46,267 INFO L226 Difference]: Without dead ends: 10939 [2021-05-22 02:00:46,268 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:46,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10939 states. [2021-05-22 02:00:46,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10939 to 5251. [2021-05-22 02:00:46,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 4.747619047619048) internal successors, (24925), 5250 states have internal predecessors, (24925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 24925 transitions. [2021-05-22 02:00:46,529 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 24925 transitions. Word has length 29 [2021-05-22 02:00:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:46,529 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 24925 transitions. [2021-05-22 02:00:46,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:46,529 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 24925 transitions. [2021-05-22 02:00:46,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:46,539 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:46,539 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:46,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable419 [2021-05-22 02:00:46,539 INFO L430 AbstractCegarLoop]: === Iteration 421 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:46,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:46,539 INFO L82 PathProgramCache]: Analyzing trace with hash 2025650955, now seen corresponding path program 416 times [2021-05-22 02:00:46,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:46,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671006815] [2021-05-22 02:00:46,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:46,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:46,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671006815] [2021-05-22 02:00:46,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671006815] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:46,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:46,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:46,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857493625] [2021-05-22 02:00:46,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:46,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:46,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:46,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:46,656 INFO L87 Difference]: Start difference. First operand 5251 states and 24925 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:46,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:46,759 INFO L93 Difference]: Finished difference Result 11481 states and 51341 transitions. [2021-05-22 02:00:46,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:46,760 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:46,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:46,790 INFO L225 Difference]: With dead ends: 11481 [2021-05-22 02:00:46,790 INFO L226 Difference]: Without dead ends: 10859 [2021-05-22 02:00:46,790 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:46,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10859 states. [2021-05-22 02:00:47,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10859 to 5171. [2021-05-22 02:00:47,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.751450676982592) internal successors, (24565), 5170 states have internal predecessors, (24565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:47,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24565 transitions. [2021-05-22 02:00:47,046 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24565 transitions. Word has length 29 [2021-05-22 02:00:47,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:47,046 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24565 transitions. [2021-05-22 02:00:47,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:47,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24565 transitions. [2021-05-22 02:00:47,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:47,055 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:47,055 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:47,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable420 [2021-05-22 02:00:47,055 INFO L430 AbstractCegarLoop]: === Iteration 422 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:47,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:47,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1370580247, now seen corresponding path program 417 times [2021-05-22 02:00:47,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:47,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526466526] [2021-05-22 02:00:47,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:47,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:47,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526466526] [2021-05-22 02:00:47,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526466526] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:47,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:47,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:47,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845408634] [2021-05-22 02:00:47,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:47,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:47,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:47,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:47,157 INFO L87 Difference]: Start difference. First operand 5171 states and 24565 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:47,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:47,293 INFO L93 Difference]: Finished difference Result 11251 states and 50403 transitions. [2021-05-22 02:00:47,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:47,293 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:47,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:47,322 INFO L225 Difference]: With dead ends: 11251 [2021-05-22 02:00:47,322 INFO L226 Difference]: Without dead ends: 10836 [2021-05-22 02:00:47,322 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:47,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10836 states. [2021-05-22 02:00:47,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10836 to 5219. [2021-05-22 02:00:47,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5219 states, 5218 states have (on average 4.741471828286699) internal successors, (24741), 5218 states have internal predecessors, (24741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 24741 transitions. [2021-05-22 02:00:47,573 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 24741 transitions. Word has length 29 [2021-05-22 02:00:47,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:47,573 INFO L482 AbstractCegarLoop]: Abstraction has 5219 states and 24741 transitions. [2021-05-22 02:00:47,573 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:47,573 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 24741 transitions. [2021-05-22 02:00:47,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:47,583 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:47,583 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:47,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable421 [2021-05-22 02:00:47,583 INFO L430 AbstractCegarLoop]: === Iteration 423 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:47,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:47,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1794034187, now seen corresponding path program 418 times [2021-05-22 02:00:47,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:47,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243018894] [2021-05-22 02:00:47,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:47,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:47,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243018894] [2021-05-22 02:00:47,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243018894] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:47,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:47,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:47,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430881900] [2021-05-22 02:00:47,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:47,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:47,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:47,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:47,685 INFO L87 Difference]: Start difference. First operand 5219 states and 24741 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:47,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:47,796 INFO L93 Difference]: Finished difference Result 11307 states and 50607 transitions. [2021-05-22 02:00:47,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:47,797 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:47,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:47,824 INFO L225 Difference]: With dead ends: 11307 [2021-05-22 02:00:47,825 INFO L226 Difference]: Without dead ends: 10788 [2021-05-22 02:00:47,825 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:47,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10788 states. [2021-05-22 02:00:48,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10788 to 5171. [2021-05-22 02:00:48,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.746808510638298) internal successors, (24541), 5170 states have internal predecessors, (24541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:48,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24541 transitions. [2021-05-22 02:00:48,071 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24541 transitions. Word has length 29 [2021-05-22 02:00:48,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:48,072 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24541 transitions. [2021-05-22 02:00:48,072 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:48,072 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24541 transitions. [2021-05-22 02:00:48,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:48,081 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:48,081 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:48,081 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable422 [2021-05-22 02:00:48,081 INFO L430 AbstractCegarLoop]: === Iteration 424 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:48,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:48,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1860663819, now seen corresponding path program 419 times [2021-05-22 02:00:48,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:48,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441527089] [2021-05-22 02:00:48,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:48,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:48,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:48,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441527089] [2021-05-22 02:00:48,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441527089] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:48,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:48,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:48,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088694096] [2021-05-22 02:00:48,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:48,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:48,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:48,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:48,197 INFO L87 Difference]: Start difference. First operand 5171 states and 24541 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:48,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:48,309 INFO L93 Difference]: Finished difference Result 11565 states and 51717 transitions. [2021-05-22 02:00:48,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:48,309 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:48,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:48,339 INFO L225 Difference]: With dead ends: 11565 [2021-05-22 02:00:48,339 INFO L226 Difference]: Without dead ends: 11023 [2021-05-22 02:00:48,339 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:48,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11023 states. [2021-05-22 02:00:48,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11023 to 5279. [2021-05-22 02:00:48,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5279 states, 5278 states have (on average 4.725464190981432) internal successors, (24941), 5278 states have internal predecessors, (24941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:48,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5279 states to 5279 states and 24941 transitions. [2021-05-22 02:00:48,588 INFO L78 Accepts]: Start accepts. Automaton has 5279 states and 24941 transitions. Word has length 29 [2021-05-22 02:00:48,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:48,589 INFO L482 AbstractCegarLoop]: Abstraction has 5279 states and 24941 transitions. [2021-05-22 02:00:48,589 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:48,589 INFO L276 IsEmpty]: Start isEmpty. Operand 5279 states and 24941 transitions. [2021-05-22 02:00:48,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:48,598 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:48,598 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:48,598 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable423 [2021-05-22 02:00:48,598 INFO L430 AbstractCegarLoop]: === Iteration 425 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:48,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:48,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1770904169, now seen corresponding path program 420 times [2021-05-22 02:00:48,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:48,598 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193916779] [2021-05-22 02:00:48,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:48,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:48,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:48,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193916779] [2021-05-22 02:00:48,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193916779] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:48,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:48,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:48,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020748489] [2021-05-22 02:00:48,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:48,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:48,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:48,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:48,743 INFO L87 Difference]: Start difference. First operand 5279 states and 24941 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:48,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:48,862 INFO L93 Difference]: Finished difference Result 11494 states and 51334 transitions. [2021-05-22 02:00:48,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:48,862 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:48,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:48,892 INFO L225 Difference]: With dead ends: 11494 [2021-05-22 02:00:48,892 INFO L226 Difference]: Without dead ends: 10875 [2021-05-22 02:00:48,892 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 164.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:49,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10875 states. [2021-05-22 02:00:49,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10875 to 5131. [2021-05-22 02:00:49,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.752631578947368) internal successors, (24381), 5130 states have internal predecessors, (24381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:49,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24381 transitions. [2021-05-22 02:00:49,147 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24381 transitions. Word has length 29 [2021-05-22 02:00:49,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:49,147 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24381 transitions. [2021-05-22 02:00:49,148 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:49,148 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24381 transitions. [2021-05-22 02:00:49,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:49,156 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:49,156 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:49,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable424 [2021-05-22 02:00:49,156 INFO L430 AbstractCegarLoop]: === Iteration 426 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:49,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:49,157 INFO L82 PathProgramCache]: Analyzing trace with hash -770859479, now seen corresponding path program 421 times [2021-05-22 02:00:49,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:49,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264785964] [2021-05-22 02:00:49,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:49,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:49,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:49,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264785964] [2021-05-22 02:00:49,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264785964] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:49,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:49,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:49,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070269834] [2021-05-22 02:00:49,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:49,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:49,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:49,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:49,262 INFO L87 Difference]: Start difference. First operand 5131 states and 24381 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:49,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:49,376 INFO L93 Difference]: Finished difference Result 11108 states and 49804 transitions. [2021-05-22 02:00:49,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:49,377 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:49,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:49,405 INFO L225 Difference]: With dead ends: 11108 [2021-05-22 02:00:49,405 INFO L226 Difference]: Without dead ends: 10693 [2021-05-22 02:00:49,405 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:49,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10693 states. [2021-05-22 02:00:49,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10693 to 5203. [2021-05-22 02:00:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.744521337946943) internal successors, (24681), 5202 states have internal predecessors, (24681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:49,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24681 transitions. [2021-05-22 02:00:49,647 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24681 transitions. Word has length 29 [2021-05-22 02:00:49,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:49,647 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24681 transitions. [2021-05-22 02:00:49,648 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:49,648 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24681 transitions. [2021-05-22 02:00:49,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:49,657 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:49,657 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:49,657 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable425 [2021-05-22 02:00:49,657 INFO L430 AbstractCegarLoop]: === Iteration 427 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:49,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:49,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1285540405, now seen corresponding path program 422 times [2021-05-22 02:00:49,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:49,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981510399] [2021-05-22 02:00:49,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:49,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:49,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:49,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:49,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981510399] [2021-05-22 02:00:49,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981510399] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:49,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:49,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:49,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325747423] [2021-05-22 02:00:49,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:49,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:49,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:49,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:49,765 INFO L87 Difference]: Start difference. First operand 5203 states and 24681 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:49,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:49,885 INFO L93 Difference]: Finished difference Result 11168 states and 50020 transitions. [2021-05-22 02:00:49,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:49,885 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:49,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:49,914 INFO L225 Difference]: With dead ends: 11168 [2021-05-22 02:00:49,914 INFO L226 Difference]: Without dead ends: 10645 [2021-05-22 02:00:49,914 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:50,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10645 states. [2021-05-22 02:00:50,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10645 to 5155. [2021-05-22 02:00:50,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.749902987970509) internal successors, (24481), 5154 states have internal predecessors, (24481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24481 transitions. [2021-05-22 02:00:50,156 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24481 transitions. Word has length 29 [2021-05-22 02:00:50,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:50,156 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24481 transitions. [2021-05-22 02:00:50,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:50,156 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24481 transitions. [2021-05-22 02:00:50,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:50,166 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:50,166 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:50,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable426 [2021-05-22 02:00:50,166 INFO L430 AbstractCegarLoop]: === Iteration 428 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:50,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:50,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1251761525, now seen corresponding path program 423 times [2021-05-22 02:00:50,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:50,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484480232] [2021-05-22 02:00:50,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:50,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:50,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:50,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484480232] [2021-05-22 02:00:50,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484480232] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:50,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:50,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:50,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561758476] [2021-05-22 02:00:50,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:50,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:50,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:50,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:50,262 INFO L87 Difference]: Start difference. First operand 5155 states and 24481 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:50,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:50,380 INFO L93 Difference]: Finished difference Result 11104 states and 49768 transitions. [2021-05-22 02:00:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:50,380 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:50,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:50,409 INFO L225 Difference]: With dead ends: 11104 [2021-05-22 02:00:50,409 INFO L226 Difference]: Without dead ends: 10689 [2021-05-22 02:00:50,409 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:50,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10689 states. [2021-05-22 02:00:50,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10689 to 5203. [2021-05-22 02:00:50,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.739907727797001) internal successors, (24657), 5202 states have internal predecessors, (24657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:50,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24657 transitions. [2021-05-22 02:00:50,663 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24657 transitions. Word has length 29 [2021-05-22 02:00:50,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:50,663 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24657 transitions. [2021-05-22 02:00:50,663 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:50,663 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24657 transitions. [2021-05-22 02:00:50,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:50,672 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:50,672 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:50,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable427 [2021-05-22 02:00:50,673 INFO L430 AbstractCegarLoop]: === Iteration 429 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:50,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:50,673 INFO L82 PathProgramCache]: Analyzing trace with hash 431414603, now seen corresponding path program 424 times [2021-05-22 02:00:50,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:50,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588484602] [2021-05-22 02:00:50,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:50,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:50,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588484602] [2021-05-22 02:00:50,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588484602] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:50,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:50,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:50,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646933687] [2021-05-22 02:00:50,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:50,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:50,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:50,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:50,769 INFO L87 Difference]: Start difference. First operand 5203 states and 24657 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:50,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:50,886 INFO L93 Difference]: Finished difference Result 11160 states and 49972 transitions. [2021-05-22 02:00:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:50,886 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:50,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:50,916 INFO L225 Difference]: With dead ends: 11160 [2021-05-22 02:00:50,916 INFO L226 Difference]: Without dead ends: 10641 [2021-05-22 02:00:50,916 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:51,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10641 states. [2021-05-22 02:00:51,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10641 to 5155. [2021-05-22 02:00:51,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.745246410554909) internal successors, (24457), 5154 states have internal predecessors, (24457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:51,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24457 transitions. [2021-05-22 02:00:51,158 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24457 transitions. Word has length 29 [2021-05-22 02:00:51,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:51,159 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24457 transitions. [2021-05-22 02:00:51,159 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:51,159 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24457 transitions. [2021-05-22 02:00:51,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:51,168 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:51,168 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:51,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable428 [2021-05-22 02:00:51,168 INFO L430 AbstractCegarLoop]: === Iteration 430 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:51,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:51,168 INFO L82 PathProgramCache]: Analyzing trace with hash -927914899, now seen corresponding path program 425 times [2021-05-22 02:00:51,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:51,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215438179] [2021-05-22 02:00:51,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:51,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:51,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:51,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215438179] [2021-05-22 02:00:51,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215438179] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:51,265 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:51,265 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:51,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919505110] [2021-05-22 02:00:51,265 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:51,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:51,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:51,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:51,265 INFO L87 Difference]: Start difference. First operand 5155 states and 24457 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:51,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:51,373 INFO L93 Difference]: Finished difference Result 11252 states and 50412 transitions. [2021-05-22 02:00:51,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:51,373 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:51,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:51,402 INFO L225 Difference]: With dead ends: 11252 [2021-05-22 02:00:51,402 INFO L226 Difference]: Without dead ends: 10777 [2021-05-22 02:00:51,402 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:51,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10777 states. [2021-05-22 02:00:51,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10777 to 5231. [2021-05-22 02:00:51,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5231 states, 5230 states have (on average 4.731357552581262) internal successors, (24745), 5230 states have internal predecessors, (24745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:51,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5231 states to 5231 states and 24745 transitions. [2021-05-22 02:00:51,675 INFO L78 Accepts]: Start accepts. Automaton has 5231 states and 24745 transitions. Word has length 29 [2021-05-22 02:00:51,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:51,675 INFO L482 AbstractCegarLoop]: Abstraction has 5231 states and 24745 transitions. [2021-05-22 02:00:51,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:51,675 INFO L276 IsEmpty]: Start isEmpty. Operand 5231 states and 24745 transitions. [2021-05-22 02:00:51,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:51,684 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:51,684 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:51,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable429 [2021-05-22 02:00:51,685 INFO L430 AbstractCegarLoop]: === Iteration 431 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:51,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:51,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1323715403, now seen corresponding path program 426 times [2021-05-22 02:00:51,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:51,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903247805] [2021-05-22 02:00:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:51,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:51,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:51,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903247805] [2021-05-22 02:00:51,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903247805] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:51,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:51,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:51,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020046084] [2021-05-22 02:00:51,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:51,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:51,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:51,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:51,782 INFO L87 Difference]: Start difference. First operand 5231 states and 24745 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:51,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:51,894 INFO L93 Difference]: Finished difference Result 11248 states and 50324 transitions. [2021-05-22 02:00:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:51,894 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:51,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:51,923 INFO L225 Difference]: With dead ends: 11248 [2021-05-22 02:00:51,923 INFO L226 Difference]: Without dead ends: 10677 [2021-05-22 02:00:51,923 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:52,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10677 states. [2021-05-22 02:00:52,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10677 to 5131. [2021-05-22 02:00:52,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.750292397660819) internal successors, (24369), 5130 states have internal predecessors, (24369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:52,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24369 transitions. [2021-05-22 02:00:52,167 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24369 transitions. Word has length 29 [2021-05-22 02:00:52,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:52,168 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24369 transitions. [2021-05-22 02:00:52,168 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:52,168 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24369 transitions. [2021-05-22 02:00:52,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:52,177 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:52,177 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:52,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable430 [2021-05-22 02:00:52,177 INFO L430 AbstractCegarLoop]: === Iteration 432 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:52,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:52,177 INFO L82 PathProgramCache]: Analyzing trace with hash 957023341, now seen corresponding path program 427 times [2021-05-22 02:00:52,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:52,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579996460] [2021-05-22 02:00:52,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:52,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:52,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:52,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579996460] [2021-05-22 02:00:52,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579996460] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:52,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:52,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:52,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270793359] [2021-05-22 02:00:52,273 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:52,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:52,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:52,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:52,274 INFO L87 Difference]: Start difference. First operand 5131 states and 24369 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:52,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:52,368 INFO L93 Difference]: Finished difference Result 11703 states and 52396 transitions. [2021-05-22 02:00:52,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:52,368 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:52,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:52,398 INFO L225 Difference]: With dead ends: 11703 [2021-05-22 02:00:52,398 INFO L226 Difference]: Without dead ends: 11161 [2021-05-22 02:00:52,399 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:52,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11161 states. [2021-05-22 02:00:52,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11161 to 5295. [2021-05-22 02:00:52,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5295 states, 5294 states have (on average 4.732716282584057) internal successors, (25055), 5294 states have internal predecessors, (25055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:52,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 25055 transitions. [2021-05-22 02:00:52,667 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 25055 transitions. Word has length 29 [2021-05-22 02:00:52,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:52,667 INFO L482 AbstractCegarLoop]: Abstraction has 5295 states and 25055 transitions. [2021-05-22 02:00:52,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:52,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 25055 transitions. [2021-05-22 02:00:52,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:52,677 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:52,677 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:52,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable431 [2021-05-22 02:00:52,677 INFO L430 AbstractCegarLoop]: === Iteration 433 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:52,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:52,677 INFO L82 PathProgramCache]: Analyzing trace with hash 216071243, now seen corresponding path program 428 times [2021-05-22 02:00:52,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:52,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145536653] [2021-05-22 02:00:52,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:52,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:52,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:52,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145536653] [2021-05-22 02:00:52,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145536653] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:52,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:52,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:52,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150748379] [2021-05-22 02:00:52,774 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:52,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:52,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:52,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:52,775 INFO L87 Difference]: Start difference. First operand 5295 states and 25055 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:52,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:52,886 INFO L93 Difference]: Finished difference Result 11636 states and 52023 transitions. [2021-05-22 02:00:52,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:52,886 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:52,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:52,916 INFO L225 Difference]: With dead ends: 11636 [2021-05-22 02:00:52,916 INFO L226 Difference]: Without dead ends: 11051 [2021-05-22 02:00:52,916 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:53,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11051 states. [2021-05-22 02:00:53,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11051 to 5185. [2021-05-22 02:00:53,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.744598765432099) internal successors, (24596), 5184 states have internal predecessors, (24596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24596 transitions. [2021-05-22 02:00:53,168 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24596 transitions. Word has length 29 [2021-05-22 02:00:53,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:53,168 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24596 transitions. [2021-05-22 02:00:53,169 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:53,169 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24596 transitions. [2021-05-22 02:00:53,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:53,178 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:53,178 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:53,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable432 [2021-05-22 02:00:53,178 INFO L430 AbstractCegarLoop]: === Iteration 434 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:53,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:53,178 INFO L82 PathProgramCache]: Analyzing trace with hash 110226379, now seen corresponding path program 429 times [2021-05-22 02:00:53,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:53,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015939118] [2021-05-22 02:00:53,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:53,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:53,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015939118] [2021-05-22 02:00:53,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015939118] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:53,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:53,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:53,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038298881] [2021-05-22 02:00:53,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:53,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:53,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:53,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:53,287 INFO L87 Difference]: Start difference. First operand 5185 states and 24596 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:53,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:53,385 INFO L93 Difference]: Finished difference Result 11697 states and 52323 transitions. [2021-05-22 02:00:53,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:53,385 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:53,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:53,416 INFO L225 Difference]: With dead ends: 11697 [2021-05-22 02:00:53,416 INFO L226 Difference]: Without dead ends: 11155 [2021-05-22 02:00:53,416 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:53,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11155 states. [2021-05-22 02:00:53,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11155 to 5293. [2021-05-22 02:00:53,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5293 states, 5292 states have (on average 4.723356009070295) internal successors, (24996), 5292 states have internal predecessors, (24996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:53,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 24996 transitions. [2021-05-22 02:00:53,667 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 24996 transitions. Word has length 29 [2021-05-22 02:00:53,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:53,667 INFO L482 AbstractCegarLoop]: Abstraction has 5293 states and 24996 transitions. [2021-05-22 02:00:53,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:53,667 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 24996 transitions. [2021-05-22 02:00:53,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:53,676 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:53,676 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:53,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable433 [2021-05-22 02:00:53,677 INFO L430 AbstractCegarLoop]: === Iteration 435 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:53,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:53,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1689889589, now seen corresponding path program 430 times [2021-05-22 02:00:53,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:53,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720742925] [2021-05-22 02:00:53,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:53,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:53,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:53,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720742925] [2021-05-22 02:00:53,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720742925] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:53,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:53,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:53,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990615560] [2021-05-22 02:00:53,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:53,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:53,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:53,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:53,785 INFO L87 Difference]: Start difference. First operand 5293 states and 24996 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:53,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:53,907 INFO L93 Difference]: Finished difference Result 11626 states and 51940 transitions. [2021-05-22 02:00:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:53,907 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:53,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:53,936 INFO L225 Difference]: With dead ends: 11626 [2021-05-22 02:00:53,936 INFO L226 Difference]: Without dead ends: 11047 [2021-05-22 02:00:53,937 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:54,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11047 states. [2021-05-22 02:00:54,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11047 to 5185. [2021-05-22 02:00:54,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.734182098765432) internal successors, (24542), 5184 states have internal predecessors, (24542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:54,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24542 transitions. [2021-05-22 02:00:54,184 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24542 transitions. Word has length 29 [2021-05-22 02:00:54,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:54,184 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24542 transitions. [2021-05-22 02:00:54,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:54,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24542 transitions. [2021-05-22 02:00:54,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:54,193 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:54,193 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:54,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable434 [2021-05-22 02:00:54,193 INFO L430 AbstractCegarLoop]: === Iteration 436 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:54,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:54,194 INFO L82 PathProgramCache]: Analyzing trace with hash -143606487, now seen corresponding path program 431 times [2021-05-22 02:00:54,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:54,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744772876] [2021-05-22 02:00:54,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:54,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:54,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744772876] [2021-05-22 02:00:54,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744772876] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:54,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:54,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:54,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235146257] [2021-05-22 02:00:54,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:54,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:54,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:54,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:54,291 INFO L87 Difference]: Start difference. First operand 5185 states and 24542 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:54,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:54,405 INFO L93 Difference]: Finished difference Result 11531 states and 51599 transitions. [2021-05-22 02:00:54,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:54,405 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:54,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:54,435 INFO L225 Difference]: With dead ends: 11531 [2021-05-22 02:00:54,435 INFO L226 Difference]: Without dead ends: 11056 [2021-05-22 02:00:54,435 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:54,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11056 states. [2021-05-22 02:00:54,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11056 to 5261. [2021-05-22 02:00:54,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 4.720532319391635) internal successors, (24830), 5260 states have internal predecessors, (24830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:54,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 24830 transitions. [2021-05-22 02:00:54,682 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 24830 transitions. Word has length 29 [2021-05-22 02:00:54,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:54,682 INFO L482 AbstractCegarLoop]: Abstraction has 5261 states and 24830 transitions. [2021-05-22 02:00:54,682 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:54,682 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 24830 transitions. [2021-05-22 02:00:54,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:54,692 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:54,692 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:54,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable435 [2021-05-22 02:00:54,692 INFO L430 AbstractCegarLoop]: === Iteration 437 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:54,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:54,692 INFO L82 PathProgramCache]: Analyzing trace with hash 937456139, now seen corresponding path program 432 times [2021-05-22 02:00:54,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:54,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724002617] [2021-05-22 02:00:54,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:54,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:54,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724002617] [2021-05-22 02:00:54,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724002617] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:54,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:54,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:54,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825218835] [2021-05-22 02:00:54,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:54,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:54,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:54,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:54,790 INFO L87 Difference]: Start difference. First operand 5261 states and 24830 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:54,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:54,905 INFO L93 Difference]: Finished difference Result 11527 states and 51511 transitions. [2021-05-22 02:00:54,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:54,905 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:54,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:54,935 INFO L225 Difference]: With dead ends: 11527 [2021-05-22 02:00:54,935 INFO L226 Difference]: Without dead ends: 10906 [2021-05-22 02:00:54,935 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:55,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10906 states. [2021-05-22 02:00:55,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10906 to 5111. [2021-05-22 02:00:55,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5111 states, 5110 states have (on average 4.7555772994129155) internal successors, (24301), 5110 states have internal predecessors, (24301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:55,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5111 states to 5111 states and 24301 transitions. [2021-05-22 02:00:55,182 INFO L78 Accepts]: Start accepts. Automaton has 5111 states and 24301 transitions. Word has length 29 [2021-05-22 02:00:55,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:55,182 INFO L482 AbstractCegarLoop]: Abstraction has 5111 states and 24301 transitions. [2021-05-22 02:00:55,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:55,182 INFO L276 IsEmpty]: Start isEmpty. Operand 5111 states and 24301 transitions. [2021-05-22 02:00:55,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:55,191 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:55,191 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:55,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable436 [2021-05-22 02:00:55,192 INFO L430 AbstractCegarLoop]: === Iteration 438 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:55,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:55,192 INFO L82 PathProgramCache]: Analyzing trace with hash -518688185, now seen corresponding path program 433 times [2021-05-22 02:00:55,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:55,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699738042] [2021-05-22 02:00:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:55,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:55,300 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699738042] [2021-05-22 02:00:55,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699738042] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:55,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:55,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:55,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067462541] [2021-05-22 02:00:55,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:55,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:55,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:55,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:55,300 INFO L87 Difference]: Start difference. First operand 5111 states and 24301 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:55,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:55,456 INFO L93 Difference]: Finished difference Result 10537 states and 47177 transitions. [2021-05-22 02:00:55,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:55,456 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:55,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:55,483 INFO L225 Difference]: With dead ends: 10537 [2021-05-22 02:00:55,483 INFO L226 Difference]: Without dead ends: 10122 [2021-05-22 02:00:55,483 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 175.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:55,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10122 states. [2021-05-22 02:00:55,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10122 to 5167. [2021-05-22 02:00:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.749709639953543) internal successors, (24537), 5166 states have internal predecessors, (24537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:55,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24537 transitions. [2021-05-22 02:00:55,720 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24537 transitions. Word has length 29 [2021-05-22 02:00:55,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:55,720 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24537 transitions. [2021-05-22 02:00:55,720 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:55,720 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24537 transitions. [2021-05-22 02:00:55,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:55,729 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:55,729 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:55,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable437 [2021-05-22 02:00:55,729 INFO L430 AbstractCegarLoop]: === Iteration 439 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:55,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:55,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1374158117, now seen corresponding path program 434 times [2021-05-22 02:00:55,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:55,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684482267] [2021-05-22 02:00:55,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:55,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:55,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684482267] [2021-05-22 02:00:55,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684482267] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:55,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:55,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:55,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228428873] [2021-05-22 02:00:55,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:55,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:55,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:55,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:55,844 INFO L87 Difference]: Start difference. First operand 5167 states and 24537 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:55,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:55,958 INFO L93 Difference]: Finished difference Result 10537 states and 47145 transitions. [2021-05-22 02:00:55,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:55,958 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:55,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:55,984 INFO L225 Difference]: With dead ends: 10537 [2021-05-22 02:00:55,984 INFO L226 Difference]: Without dead ends: 10090 [2021-05-22 02:00:55,985 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:56,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10090 states. [2021-05-22 02:00:56,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10090 to 5135. [2021-05-22 02:00:56,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5135 states, 5134 states have (on average 4.754382547721075) internal successors, (24409), 5134 states have internal predecessors, (24409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:56,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5135 states to 5135 states and 24409 transitions. [2021-05-22 02:00:56,221 INFO L78 Accepts]: Start accepts. Automaton has 5135 states and 24409 transitions. Word has length 29 [2021-05-22 02:00:56,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:56,221 INFO L482 AbstractCegarLoop]: Abstraction has 5135 states and 24409 transitions. [2021-05-22 02:00:56,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:56,221 INFO L276 IsEmpty]: Start isEmpty. Operand 5135 states and 24409 transitions. [2021-05-22 02:00:56,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:56,230 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:56,230 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:56,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable438 [2021-05-22 02:00:56,230 INFO L430 AbstractCegarLoop]: === Iteration 440 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:56,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:56,231 INFO L82 PathProgramCache]: Analyzing trace with hash -999590231, now seen corresponding path program 435 times [2021-05-22 02:00:56,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:56,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892799938] [2021-05-22 02:00:56,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:56,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:56,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:56,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892799938] [2021-05-22 02:00:56,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892799938] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:56,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:56,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:56,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467339092] [2021-05-22 02:00:56,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:56,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:56,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:56,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:56,348 INFO L87 Difference]: Start difference. First operand 5135 states and 24409 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:56,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:56,463 INFO L93 Difference]: Finished difference Result 10613 states and 47505 transitions. [2021-05-22 02:00:56,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:56,463 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:56,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:56,490 INFO L225 Difference]: With dead ends: 10613 [2021-05-22 02:00:56,491 INFO L226 Difference]: Without dead ends: 10198 [2021-05-22 02:00:56,491 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:56,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10198 states. [2021-05-22 02:00:56,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10198 to 5183. [2021-05-22 02:00:56,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5183 states, 5182 states have (on average 4.744307217290621) internal successors, (24585), 5182 states have internal predecessors, (24585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:56,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5183 states to 5183 states and 24585 transitions. [2021-05-22 02:00:56,729 INFO L78 Accepts]: Start accepts. Automaton has 5183 states and 24585 transitions. Word has length 29 [2021-05-22 02:00:56,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:56,729 INFO L482 AbstractCegarLoop]: Abstraction has 5183 states and 24585 transitions. [2021-05-22 02:00:56,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:56,729 INFO L276 IsEmpty]: Start isEmpty. Operand 5183 states and 24585 transitions. [2021-05-22 02:00:56,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:56,739 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:56,739 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:56,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable439 [2021-05-22 02:00:56,739 INFO L430 AbstractCegarLoop]: === Iteration 441 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:56,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:56,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1299257833, now seen corresponding path program 436 times [2021-05-22 02:00:56,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:56,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131819479] [2021-05-22 02:00:56,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:56,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:56,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:56,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:56,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131819479] [2021-05-22 02:00:56,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131819479] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:56,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:56,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:56,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649268311] [2021-05-22 02:00:56,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:56,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:56,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:56,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:56,856 INFO L87 Difference]: Start difference. First operand 5183 states and 24585 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:56,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:56,969 INFO L93 Difference]: Finished difference Result 10673 states and 47721 transitions. [2021-05-22 02:00:56,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:56,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:56,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:56,996 INFO L225 Difference]: With dead ends: 10673 [2021-05-22 02:00:56,997 INFO L226 Difference]: Without dead ends: 10150 [2021-05-22 02:00:56,997 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:57,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10150 states. [2021-05-22 02:00:57,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10150 to 5135. [2021-05-22 02:00:57,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5135 states, 5134 states have (on average 4.751266069341644) internal successors, (24393), 5134 states have internal predecessors, (24393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5135 states to 5135 states and 24393 transitions. [2021-05-22 02:00:57,232 INFO L78 Accepts]: Start accepts. Automaton has 5135 states and 24393 transitions. Word has length 29 [2021-05-22 02:00:57,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:57,232 INFO L482 AbstractCegarLoop]: Abstraction has 5135 states and 24393 transitions. [2021-05-22 02:00:57,232 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:57,232 INFO L276 IsEmpty]: Start isEmpty. Operand 5135 states and 24393 transitions. [2021-05-22 02:00:57,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:57,241 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:57,241 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:57,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable440 [2021-05-22 02:00:57,241 INFO L430 AbstractCegarLoop]: === Iteration 442 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:57,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:57,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1243462053, now seen corresponding path program 437 times [2021-05-22 02:00:57,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:57,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076904894] [2021-05-22 02:00:57,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:57,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:57,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:57,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076904894] [2021-05-22 02:00:57,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076904894] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:57,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:57,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:57,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583905891] [2021-05-22 02:00:57,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:57,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:57,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:57,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:57,360 INFO L87 Difference]: Start difference. First operand 5135 states and 24393 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:57,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:57,452 INFO L93 Difference]: Finished difference Result 10613 states and 47489 transitions. [2021-05-22 02:00:57,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:57,452 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:57,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:57,479 INFO L225 Difference]: With dead ends: 10613 [2021-05-22 02:00:57,479 INFO L226 Difference]: Without dead ends: 10198 [2021-05-22 02:00:57,480 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:57,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10198 states. [2021-05-22 02:00:57,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10198 to 5183. [2021-05-22 02:00:57,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5183 states, 5182 states have (on average 4.741219606329603) internal successors, (24569), 5182 states have internal predecessors, (24569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:57,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5183 states to 5183 states and 24569 transitions. [2021-05-22 02:00:57,720 INFO L78 Accepts]: Start accepts. Automaton has 5183 states and 24569 transitions. Word has length 29 [2021-05-22 02:00:57,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:57,720 INFO L482 AbstractCegarLoop]: Abstraction has 5183 states and 24569 transitions. [2021-05-22 02:00:57,720 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:57,720 INFO L276 IsEmpty]: Start isEmpty. Operand 5183 states and 24569 transitions. [2021-05-22 02:00:57,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:57,729 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:57,729 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:57,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable441 [2021-05-22 02:00:57,729 INFO L430 AbstractCegarLoop]: === Iteration 443 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:57,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:57,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1970442617, now seen corresponding path program 438 times [2021-05-22 02:00:57,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:57,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821987089] [2021-05-22 02:00:57,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:57,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:57,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821987089] [2021-05-22 02:00:57,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821987089] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:57,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:57,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:57,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961019160] [2021-05-22 02:00:57,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:57,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:57,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:57,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:57,845 INFO L87 Difference]: Start difference. First operand 5183 states and 24569 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:57,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:57,958 INFO L93 Difference]: Finished difference Result 10673 states and 47705 transitions. [2021-05-22 02:00:57,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:57,959 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:57,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:57,987 INFO L225 Difference]: With dead ends: 10673 [2021-05-22 02:00:57,987 INFO L226 Difference]: Without dead ends: 10134 [2021-05-22 02:00:57,987 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:58,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10134 states. [2021-05-22 02:00:58,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10134 to 5119. [2021-05-22 02:00:58,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 5118 states have (on average 4.755177803829621) internal successors, (24337), 5118 states have internal predecessors, (24337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:58,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 24337 transitions. [2021-05-22 02:00:58,222 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 24337 transitions. Word has length 29 [2021-05-22 02:00:58,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:58,222 INFO L482 AbstractCegarLoop]: Abstraction has 5119 states and 24337 transitions. [2021-05-22 02:00:58,222 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:58,222 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 24337 transitions. [2021-05-22 02:00:58,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:58,231 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:58,231 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:58,231 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable442 [2021-05-22 02:00:58,231 INFO L430 AbstractCegarLoop]: === Iteration 444 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:58,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:58,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1190913577, now seen corresponding path program 439 times [2021-05-22 02:00:58,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:58,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429930695] [2021-05-22 02:00:58,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:58,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:58,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:58,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429930695] [2021-05-22 02:00:58,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429930695] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:58,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:58,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:58,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559349047] [2021-05-22 02:00:58,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:58,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:58,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:58,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:58,328 INFO L87 Difference]: Start difference. First operand 5119 states and 24337 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:58,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:58,437 INFO L93 Difference]: Finished difference Result 10533 states and 47157 transitions. [2021-05-22 02:00:58,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:58,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:58,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:58,465 INFO L225 Difference]: With dead ends: 10533 [2021-05-22 02:00:58,465 INFO L226 Difference]: Without dead ends: 10118 [2021-05-22 02:00:58,465 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:58,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10118 states. [2021-05-22 02:00:58,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10118 to 5167. [2021-05-22 02:00:58,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.748161053039102) internal successors, (24529), 5166 states have internal predecessors, (24529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:58,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24529 transitions. [2021-05-22 02:00:58,707 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24529 transitions. Word has length 29 [2021-05-22 02:00:58,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:58,707 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24529 transitions. [2021-05-22 02:00:58,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:58,707 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24529 transitions. [2021-05-22 02:00:58,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:58,716 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:58,716 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:58,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable443 [2021-05-22 02:00:58,716 INFO L430 AbstractCegarLoop]: === Iteration 445 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:58,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:58,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1211207417, now seen corresponding path program 440 times [2021-05-22 02:00:58,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:58,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077626034] [2021-05-22 02:00:58,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:58,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:58,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:58,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077626034] [2021-05-22 02:00:58,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077626034] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:58,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:58,815 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:58,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572423065] [2021-05-22 02:00:58,815 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:58,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:58,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:58,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:58,815 INFO L87 Difference]: Start difference. First operand 5167 states and 24529 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:58,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:58,907 INFO L93 Difference]: Finished difference Result 10533 states and 47125 transitions. [2021-05-22 02:00:58,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:58,907 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:58,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:58,934 INFO L225 Difference]: With dead ends: 10533 [2021-05-22 02:00:58,935 INFO L226 Difference]: Without dead ends: 10086 [2021-05-22 02:00:58,935 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 103.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:59,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10086 states. [2021-05-22 02:00:59,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10086 to 5135. [2021-05-22 02:00:59,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5135 states, 5134 states have (on average 4.75282430853136) internal successors, (24401), 5134 states have internal predecessors, (24401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:59,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5135 states to 5135 states and 24401 transitions. [2021-05-22 02:00:59,173 INFO L78 Accepts]: Start accepts. Automaton has 5135 states and 24401 transitions. Word has length 29 [2021-05-22 02:00:59,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:59,173 INFO L482 AbstractCegarLoop]: Abstraction has 5135 states and 24401 transitions. [2021-05-22 02:00:59,173 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:59,173 INFO L276 IsEmpty]: Start isEmpty. Operand 5135 states and 24401 transitions. [2021-05-22 02:00:59,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:59,182 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:59,182 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:59,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable444 [2021-05-22 02:00:59,182 INFO L430 AbstractCegarLoop]: === Iteration 446 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:59,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:59,182 INFO L82 PathProgramCache]: Analyzing trace with hash -2011083223, now seen corresponding path program 441 times [2021-05-22 02:00:59,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:59,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687050050] [2021-05-22 02:00:59,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:59,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:59,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:59,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687050050] [2021-05-22 02:00:59,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687050050] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:59,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:59,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:59,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302754884] [2021-05-22 02:00:59,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:59,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:59,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:59,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:59,278 INFO L87 Difference]: Start difference. First operand 5135 states and 24401 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:59,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:59,392 INFO L93 Difference]: Finished difference Result 10605 states and 47473 transitions. [2021-05-22 02:00:59,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:59,392 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:59,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:59,420 INFO L225 Difference]: With dead ends: 10605 [2021-05-22 02:00:59,420 INFO L226 Difference]: Without dead ends: 10190 [2021-05-22 02:00:59,420 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:00:59,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10190 states. [2021-05-22 02:00:59,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10190 to 5183. [2021-05-22 02:00:59,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5183 states, 5182 states have (on average 4.742763411810112) internal successors, (24577), 5182 states have internal predecessors, (24577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:59,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5183 states to 5183 states and 24577 transitions. [2021-05-22 02:00:59,674 INFO L78 Accepts]: Start accepts. Automaton has 5183 states and 24577 transitions. Word has length 29 [2021-05-22 02:00:59,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:00:59,674 INFO L482 AbstractCegarLoop]: Abstraction has 5183 states and 24577 transitions. [2021-05-22 02:00:59,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:59,674 INFO L276 IsEmpty]: Start isEmpty. Operand 5183 states and 24577 transitions. [2021-05-22 02:00:59,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:00:59,683 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:00:59,683 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:00:59,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable445 [2021-05-22 02:00:59,683 INFO L430 AbstractCegarLoop]: === Iteration 447 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:00:59,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:00:59,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1597189783, now seen corresponding path program 442 times [2021-05-22 02:00:59,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:00:59,684 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679078277] [2021-05-22 02:00:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:00:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:00:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:00:59,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:00:59,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679078277] [2021-05-22 02:00:59,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679078277] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:00:59,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:00:59,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:00:59,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096961200] [2021-05-22 02:00:59,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:00:59,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:00:59,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:00:59,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:00:59,780 INFO L87 Difference]: Start difference. First operand 5183 states and 24577 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:00:59,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:00:59,905 INFO L93 Difference]: Finished difference Result 10661 states and 47677 transitions. [2021-05-22 02:00:59,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:00:59,905 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:00:59,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:00:59,932 INFO L225 Difference]: With dead ends: 10661 [2021-05-22 02:00:59,932 INFO L226 Difference]: Without dead ends: 10142 [2021-05-22 02:00:59,933 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:00,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10142 states. [2021-05-22 02:01:00,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10142 to 5135. [2021-05-22 02:01:00,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5135 states, 5134 states have (on average 4.749707830151928) internal successors, (24385), 5134 states have internal predecessors, (24385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:00,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5135 states to 5135 states and 24385 transitions. [2021-05-22 02:01:00,173 INFO L78 Accepts]: Start accepts. Automaton has 5135 states and 24385 transitions. Word has length 29 [2021-05-22 02:01:00,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:00,173 INFO L482 AbstractCegarLoop]: Abstraction has 5135 states and 24385 transitions. [2021-05-22 02:01:00,173 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:00,173 INFO L276 IsEmpty]: Start isEmpty. Operand 5135 states and 24385 transitions. [2021-05-22 02:01:00,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:00,182 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:00,182 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:00,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable446 [2021-05-22 02:01:00,182 INFO L430 AbstractCegarLoop]: === Iteration 448 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:00,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:00,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1037313627, now seen corresponding path program 443 times [2021-05-22 02:01:00,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:00,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076622233] [2021-05-22 02:01:00,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:00,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:00,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076622233] [2021-05-22 02:01:00,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076622233] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:00,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:00,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:00,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604058053] [2021-05-22 02:01:00,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:00,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:00,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:00,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:00,293 INFO L87 Difference]: Start difference. First operand 5135 states and 24385 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:00,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:00,389 INFO L93 Difference]: Finished difference Result 10605 states and 47457 transitions. [2021-05-22 02:01:00,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:00,389 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:00,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:00,418 INFO L225 Difference]: With dead ends: 10605 [2021-05-22 02:01:00,418 INFO L226 Difference]: Without dead ends: 10190 [2021-05-22 02:01:00,419 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:00,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10190 states. [2021-05-22 02:01:00,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10190 to 5183. [2021-05-22 02:01:00,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5183 states, 5182 states have (on average 4.739675800849093) internal successors, (24561), 5182 states have internal predecessors, (24561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:00,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5183 states to 5183 states and 24561 transitions. [2021-05-22 02:01:00,664 INFO L78 Accepts]: Start accepts. Automaton has 5183 states and 24561 transitions. Word has length 29 [2021-05-22 02:01:00,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:00,664 INFO L482 AbstractCegarLoop]: Abstraction has 5183 states and 24561 transitions. [2021-05-22 02:01:00,664 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:00,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5183 states and 24561 transitions. [2021-05-22 02:01:00,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:00,676 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:00,676 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:00,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable447 [2021-05-22 02:01:00,676 INFO L430 AbstractCegarLoop]: === Iteration 449 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:00,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:00,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1244121593, now seen corresponding path program 444 times [2021-05-22 02:01:00,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:00,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718454371] [2021-05-22 02:01:00,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:00,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:00,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:00,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718454371] [2021-05-22 02:01:00,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718454371] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:00,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:00,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:00,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940083205] [2021-05-22 02:01:00,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:00,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:00,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:00,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:00,786 INFO L87 Difference]: Start difference. First operand 5183 states and 24561 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:00,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:00,903 INFO L93 Difference]: Finished difference Result 10661 states and 47661 transitions. [2021-05-22 02:01:00,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:00,903 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:00,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:00,931 INFO L225 Difference]: With dead ends: 10661 [2021-05-22 02:01:00,931 INFO L226 Difference]: Without dead ends: 10126 [2021-05-22 02:01:00,931 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:01,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10126 states. [2021-05-22 02:01:01,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10126 to 5119. [2021-05-22 02:01:01,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 5118 states have (on average 4.753614693239546) internal successors, (24329), 5118 states have internal predecessors, (24329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:01,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 24329 transitions. [2021-05-22 02:01:01,172 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 24329 transitions. Word has length 29 [2021-05-22 02:01:01,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:01,172 INFO L482 AbstractCegarLoop]: Abstraction has 5119 states and 24329 transitions. [2021-05-22 02:01:01,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:01,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 24329 transitions. [2021-05-22 02:01:01,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:01,182 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:01,182 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:01,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable448 [2021-05-22 02:01:01,182 INFO L430 AbstractCegarLoop]: === Iteration 450 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:01,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:01,182 INFO L82 PathProgramCache]: Analyzing trace with hash 401527307, now seen corresponding path program 445 times [2021-05-22 02:01:01,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:01,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101302810] [2021-05-22 02:01:01,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:01,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:01,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101302810] [2021-05-22 02:01:01,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101302810] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:01,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:01,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:01,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253008537] [2021-05-22 02:01:01,290 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:01,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:01,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:01,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:01,290 INFO L87 Difference]: Start difference. First operand 5119 states and 24329 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:01,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:01,407 INFO L93 Difference]: Finished difference Result 10721 states and 48021 transitions. [2021-05-22 02:01:01,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:01,407 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:01,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:01,437 INFO L225 Difference]: With dead ends: 10721 [2021-05-22 02:01:01,437 INFO L226 Difference]: Without dead ends: 10306 [2021-05-22 02:01:01,437 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:01,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10306 states. [2021-05-22 02:01:01,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10306 to 5191. [2021-05-22 02:01:01,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.745472061657033) internal successors, (24629), 5190 states have internal predecessors, (24629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:01,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24629 transitions. [2021-05-22 02:01:01,684 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24629 transitions. Word has length 29 [2021-05-22 02:01:01,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:01,684 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24629 transitions. [2021-05-22 02:01:01,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:01,685 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24629 transitions. [2021-05-22 02:01:01,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:01,693 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:01,693 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:01,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable449 [2021-05-22 02:01:01,694 INFO L430 AbstractCegarLoop]: === Iteration 451 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:01,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:01,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1594591925, now seen corresponding path program 446 times [2021-05-22 02:01:01,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:01,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135197916] [2021-05-22 02:01:01,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:01,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:01,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135197916] [2021-05-22 02:01:01,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135197916] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:01,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:01,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:01,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112939812] [2021-05-22 02:01:01,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:01,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:01,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:01,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:01,809 INFO L87 Difference]: Start difference. First operand 5191 states and 24629 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:01,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:01,921 INFO L93 Difference]: Finished difference Result 10781 states and 48237 transitions. [2021-05-22 02:01:01,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:01,922 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:01,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:01,950 INFO L225 Difference]: With dead ends: 10781 [2021-05-22 02:01:01,950 INFO L226 Difference]: Without dead ends: 10258 [2021-05-22 02:01:01,950 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:02,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10258 states. [2021-05-22 02:01:02,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10258 to 5143. [2021-05-22 02:01:02,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.750875145857643) internal successors, (24429), 5142 states have internal predecessors, (24429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:02,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24429 transitions. [2021-05-22 02:01:02,186 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24429 transitions. Word has length 29 [2021-05-22 02:01:02,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:02,186 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24429 transitions. [2021-05-22 02:01:02,186 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:02,187 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24429 transitions. [2021-05-22 02:01:02,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:02,196 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:02,196 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:02,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable450 [2021-05-22 02:01:02,196 INFO L430 AbstractCegarLoop]: === Iteration 452 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:02,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:02,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1621534231, now seen corresponding path program 447 times [2021-05-22 02:01:02,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:02,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167872470] [2021-05-22 02:01:02,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:02,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:02,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:02,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167872470] [2021-05-22 02:01:02,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167872470] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:02,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:02,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:02,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490989260] [2021-05-22 02:01:02,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:02,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:02,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:02,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:02,312 INFO L87 Difference]: Start difference. First operand 5143 states and 24429 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:02,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:02,438 INFO L93 Difference]: Finished difference Result 10717 states and 47985 transitions. [2021-05-22 02:01:02,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:02,438 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:02,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:02,466 INFO L225 Difference]: With dead ends: 10717 [2021-05-22 02:01:02,467 INFO L226 Difference]: Without dead ends: 10302 [2021-05-22 02:01:02,467 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:02,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10302 states. [2021-05-22 02:01:02,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10302 to 5191. [2021-05-22 02:01:02,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.740847784200385) internal successors, (24605), 5190 states have internal predecessors, (24605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:02,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24605 transitions. [2021-05-22 02:01:02,728 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24605 transitions. Word has length 29 [2021-05-22 02:01:02,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:02,728 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24605 transitions. [2021-05-22 02:01:02,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:02,728 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24605 transitions. [2021-05-22 02:01:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:02,738 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:02,738 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:02,738 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable451 [2021-05-22 02:01:02,738 INFO L430 AbstractCegarLoop]: === Iteration 453 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:02,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:02,739 INFO L82 PathProgramCache]: Analyzing trace with hash 112411979, now seen corresponding path program 448 times [2021-05-22 02:01:02,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:02,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213631087] [2021-05-22 02:01:02,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:02,834 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:02,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213631087] [2021-05-22 02:01:02,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213631087] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:02,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:02,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:02,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88330953] [2021-05-22 02:01:02,834 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:02,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:02,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:02,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:02,835 INFO L87 Difference]: Start difference. First operand 5191 states and 24605 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:02,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:02,966 INFO L93 Difference]: Finished difference Result 10773 states and 48189 transitions. [2021-05-22 02:01:02,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:02,966 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:02,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:02,995 INFO L225 Difference]: With dead ends: 10773 [2021-05-22 02:01:02,995 INFO L226 Difference]: Without dead ends: 10254 [2021-05-22 02:01:02,995 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:03,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10254 states. [2021-05-22 02:01:03,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10254 to 5143. [2021-05-22 02:01:03,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.746207701283547) internal successors, (24405), 5142 states have internal predecessors, (24405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:03,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24405 transitions. [2021-05-22 02:01:03,242 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24405 transitions. Word has length 29 [2021-05-22 02:01:03,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:03,242 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24405 transitions. [2021-05-22 02:01:03,242 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:03,242 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24405 transitions. [2021-05-22 02:01:03,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:03,252 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:03,252 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:03,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable452 [2021-05-22 02:01:03,252 INFO L430 AbstractCegarLoop]: === Iteration 454 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:03,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:03,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1020012683, now seen corresponding path program 449 times [2021-05-22 02:01:03,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:03,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081106049] [2021-05-22 02:01:03,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:03,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:03,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:03,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081106049] [2021-05-22 02:01:03,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081106049] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:03,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:03,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:03,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508371561] [2021-05-22 02:01:03,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:03,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:03,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:03,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:03,349 INFO L87 Difference]: Start difference. First operand 5143 states and 24405 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:03,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:03,458 INFO L93 Difference]: Finished difference Result 10865 states and 48629 transitions. [2021-05-22 02:01:03,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:03,458 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:03,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:03,488 INFO L225 Difference]: With dead ends: 10865 [2021-05-22 02:01:03,488 INFO L226 Difference]: Without dead ends: 10390 [2021-05-22 02:01:03,488 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:03,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10390 states. [2021-05-22 02:01:03,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10390 to 5219. [2021-05-22 02:01:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5219 states, 5218 states have (on average 4.7322729014948255) internal successors, (24693), 5218 states have internal predecessors, (24693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:03,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 24693 transitions. [2021-05-22 02:01:03,747 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 24693 transitions. Word has length 29 [2021-05-22 02:01:03,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:03,747 INFO L482 AbstractCegarLoop]: Abstraction has 5219 states and 24693 transitions. [2021-05-22 02:01:03,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:03,747 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 24693 transitions. [2021-05-22 02:01:03,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:03,756 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:03,756 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:03,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable453 [2021-05-22 02:01:03,756 INFO L430 AbstractCegarLoop]: === Iteration 455 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:03,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:03,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1023324311, now seen corresponding path program 450 times [2021-05-22 02:01:03,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:03,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288231396] [2021-05-22 02:01:03,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:03,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:03,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:03,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288231396] [2021-05-22 02:01:03,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288231396] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:03,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:03,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:03,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233339630] [2021-05-22 02:01:03,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:03,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:03,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:03,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:03,854 INFO L87 Difference]: Start difference. First operand 5219 states and 24693 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:03,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:03,971 INFO L93 Difference]: Finished difference Result 10861 states and 48541 transitions. [2021-05-22 02:01:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:03,971 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:03,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:03,999 INFO L225 Difference]: With dead ends: 10861 [2021-05-22 02:01:03,999 INFO L226 Difference]: Without dead ends: 10290 [2021-05-22 02:01:03,999 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:04,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10290 states. [2021-05-22 02:01:04,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10290 to 5119. [2021-05-22 02:01:04,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 5118 states have (on average 4.7520515826494725) internal successors, (24321), 5118 states have internal predecessors, (24321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:04,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 24321 transitions. [2021-05-22 02:01:04,238 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 24321 transitions. Word has length 29 [2021-05-22 02:01:04,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:04,238 INFO L482 AbstractCegarLoop]: Abstraction has 5119 states and 24321 transitions. [2021-05-22 02:01:04,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:04,238 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 24321 transitions. [2021-05-22 02:01:04,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:04,247 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:04,247 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:04,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable454 [2021-05-22 02:01:04,247 INFO L430 AbstractCegarLoop]: === Iteration 456 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:04,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:04,247 INFO L82 PathProgramCache]: Analyzing trace with hash -119839195, now seen corresponding path program 451 times [2021-05-22 02:01:04,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:04,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198348991] [2021-05-22 02:01:04,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:04,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:04,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198348991] [2021-05-22 02:01:04,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198348991] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:04,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:04,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:04,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031659677] [2021-05-22 02:01:04,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:04,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:04,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:04,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:04,365 INFO L87 Difference]: Start difference. First operand 5119 states and 24321 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:04,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:04,457 INFO L93 Difference]: Finished difference Result 10721 states and 48013 transitions. [2021-05-22 02:01:04,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:04,457 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:04,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:04,484 INFO L225 Difference]: With dead ends: 10721 [2021-05-22 02:01:04,484 INFO L226 Difference]: Without dead ends: 10306 [2021-05-22 02:01:04,484 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:04,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10306 states. [2021-05-22 02:01:04,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10306 to 5191. [2021-05-22 02:01:04,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.74393063583815) internal successors, (24621), 5190 states have internal predecessors, (24621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:04,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24621 transitions. [2021-05-22 02:01:04,735 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24621 transitions. Word has length 29 [2021-05-22 02:01:04,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:04,735 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24621 transitions. [2021-05-22 02:01:04,735 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:04,735 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24621 transitions. [2021-05-22 02:01:04,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:04,744 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:04,744 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:04,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable455 [2021-05-22 02:01:04,745 INFO L430 AbstractCegarLoop]: === Iteration 457 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:04,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:04,745 INFO L82 PathProgramCache]: Analyzing trace with hash 961223431, now seen corresponding path program 452 times [2021-05-22 02:01:04,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:04,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447057577] [2021-05-22 02:01:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:04,891 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:04,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447057577] [2021-05-22 02:01:04,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447057577] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:04,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:04,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:04,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534454813] [2021-05-22 02:01:04,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:04,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:04,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:04,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:04,892 INFO L87 Difference]: Start difference. First operand 5191 states and 24621 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:05,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:05,059 INFO L93 Difference]: Finished difference Result 10781 states and 48229 transitions. [2021-05-22 02:01:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:05,059 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:05,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:05,093 INFO L225 Difference]: With dead ends: 10781 [2021-05-22 02:01:05,093 INFO L226 Difference]: Without dead ends: 10258 [2021-05-22 02:01:05,094 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 200.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:05,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10258 states. [2021-05-22 02:01:05,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10258 to 5143. [2021-05-22 02:01:05,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.749319330999611) internal successors, (24421), 5142 states have internal predecessors, (24421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:05,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24421 transitions. [2021-05-22 02:01:05,366 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24421 transitions. Word has length 29 [2021-05-22 02:01:05,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:05,366 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24421 transitions. [2021-05-22 02:01:05,366 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:05,366 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24421 transitions. [2021-05-22 02:01:05,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:05,375 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:05,375 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:05,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable456 [2021-05-22 02:01:05,375 INFO L430 AbstractCegarLoop]: === Iteration 458 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:05,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:05,375 INFO L82 PathProgramCache]: Analyzing trace with hash -600741241, now seen corresponding path program 453 times [2021-05-22 02:01:05,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:05,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356892312] [2021-05-22 02:01:05,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:05,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:05,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:05,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356892312] [2021-05-22 02:01:05,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356892312] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:05,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:05,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:05,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067127565] [2021-05-22 02:01:05,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:05,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:05,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:05,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:05,493 INFO L87 Difference]: Start difference. First operand 5143 states and 24421 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:05,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:05,593 INFO L93 Difference]: Finished difference Result 10717 states and 47977 transitions. [2021-05-22 02:01:05,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:05,593 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:05,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:05,621 INFO L225 Difference]: With dead ends: 10717 [2021-05-22 02:01:05,621 INFO L226 Difference]: Without dead ends: 10302 [2021-05-22 02:01:05,621 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:05,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10302 states. [2021-05-22 02:01:05,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10302 to 5191. [2021-05-22 02:01:05,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.739306358381503) internal successors, (24597), 5190 states have internal predecessors, (24597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:05,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24597 transitions. [2021-05-22 02:01:05,870 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24597 transitions. Word has length 29 [2021-05-22 02:01:05,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:05,870 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24597 transitions. [2021-05-22 02:01:05,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:05,870 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24597 transitions. [2021-05-22 02:01:05,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:05,879 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:05,879 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:05,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable457 [2021-05-22 02:01:05,879 INFO L430 AbstractCegarLoop]: === Iteration 459 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:05,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:05,879 INFO L82 PathProgramCache]: Analyzing trace with hash 2005979783, now seen corresponding path program 454 times [2021-05-22 02:01:05,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:05,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680636090] [2021-05-22 02:01:05,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:06,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:06,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680636090] [2021-05-22 02:01:06,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680636090] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:06,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:06,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:06,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506083377] [2021-05-22 02:01:06,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:06,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:06,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:06,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:06,019 INFO L87 Difference]: Start difference. First operand 5191 states and 24597 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:06,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:06,167 INFO L93 Difference]: Finished difference Result 10773 states and 48181 transitions. [2021-05-22 02:01:06,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:06,168 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:06,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:06,196 INFO L225 Difference]: With dead ends: 10773 [2021-05-22 02:01:06,196 INFO L226 Difference]: Without dead ends: 10254 [2021-05-22 02:01:06,196 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 155.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:06,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10254 states. [2021-05-22 02:01:06,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10254 to 5143. [2021-05-22 02:01:06,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.744651886425515) internal successors, (24397), 5142 states have internal predecessors, (24397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:06,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24397 transitions. [2021-05-22 02:01:06,436 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24397 transitions. Word has length 29 [2021-05-22 02:01:06,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:06,436 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24397 transitions. [2021-05-22 02:01:06,436 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:06,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24397 transitions. [2021-05-22 02:01:06,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:06,445 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:06,445 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:06,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable458 [2021-05-22 02:01:06,445 INFO L430 AbstractCegarLoop]: === Iteration 460 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:06,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:06,445 INFO L82 PathProgramCache]: Analyzing trace with hash -212736279, now seen corresponding path program 455 times [2021-05-22 02:01:06,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:06,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953892933] [2021-05-22 02:01:06,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:06,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:06,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:06,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:06,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953892933] [2021-05-22 02:01:06,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953892933] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:06,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:06,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:06,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232603330] [2021-05-22 02:01:06,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:06,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:06,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:06,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:06,548 INFO L87 Difference]: Start difference. First operand 5143 states and 24397 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:06,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:06,654 INFO L93 Difference]: Finished difference Result 10865 states and 48621 transitions. [2021-05-22 02:01:06,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:06,654 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:06,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:06,682 INFO L225 Difference]: With dead ends: 10865 [2021-05-22 02:01:06,682 INFO L226 Difference]: Without dead ends: 10390 [2021-05-22 02:01:06,682 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:06,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10390 states. [2021-05-22 02:01:06,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10390 to 5219. [2021-05-22 02:01:06,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5219 states, 5218 states have (on average 4.730739747029514) internal successors, (24685), 5218 states have internal predecessors, (24685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:06,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 24685 transitions. [2021-05-22 02:01:06,941 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 24685 transitions. Word has length 29 [2021-05-22 02:01:06,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:06,941 INFO L482 AbstractCegarLoop]: Abstraction has 5219 states and 24685 transitions. [2021-05-22 02:01:06,941 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:06,941 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 24685 transitions. [2021-05-22 02:01:06,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:06,950 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:06,950 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:06,950 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable459 [2021-05-22 02:01:06,950 INFO L430 AbstractCegarLoop]: === Iteration 461 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:06,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:06,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1059533241, now seen corresponding path program 456 times [2021-05-22 02:01:06,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:06,951 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508718637] [2021-05-22 02:01:06,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:07,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:07,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:07,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508718637] [2021-05-22 02:01:07,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508718637] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:07,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:07,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:07,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854597674] [2021-05-22 02:01:07,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:07,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:07,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:07,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:07,054 INFO L87 Difference]: Start difference. First operand 5219 states and 24685 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:07,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:07,164 INFO L93 Difference]: Finished difference Result 10861 states and 48533 transitions. [2021-05-22 02:01:07,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:07,165 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:07,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:07,192 INFO L225 Difference]: With dead ends: 10861 [2021-05-22 02:01:07,192 INFO L226 Difference]: Without dead ends: 10282 [2021-05-22 02:01:07,193 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:07,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10282 states. [2021-05-22 02:01:07,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10282 to 5111. [2021-05-22 02:01:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5111 states, 5110 states have (on average 4.754794520547946) internal successors, (24297), 5110 states have internal predecessors, (24297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:07,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5111 states to 5111 states and 24297 transitions. [2021-05-22 02:01:07,430 INFO L78 Accepts]: Start accepts. Automaton has 5111 states and 24297 transitions. Word has length 29 [2021-05-22 02:01:07,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:07,430 INFO L482 AbstractCegarLoop]: Abstraction has 5111 states and 24297 transitions. [2021-05-22 02:01:07,430 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:07,430 INFO L276 IsEmpty]: Start isEmpty. Operand 5111 states and 24297 transitions. [2021-05-22 02:01:07,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:07,439 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:07,439 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:07,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable460 [2021-05-22 02:01:07,439 INFO L430 AbstractCegarLoop]: === Iteration 462 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:07,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:07,439 INFO L82 PathProgramCache]: Analyzing trace with hash -596008189, now seen corresponding path program 457 times [2021-05-22 02:01:07,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:07,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619344686] [2021-05-22 02:01:07,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:07,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:07,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:07,553 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619344686] [2021-05-22 02:01:07,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619344686] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:07,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:07,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:07,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150781703] [2021-05-22 02:01:07,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:07,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:07,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:07,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:07,554 INFO L87 Difference]: Start difference. First operand 5111 states and 24297 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:07,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:07,643 INFO L93 Difference]: Finished difference Result 11487 states and 51416 transitions. [2021-05-22 02:01:07,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:07,644 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:07,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:07,673 INFO L225 Difference]: With dead ends: 11487 [2021-05-22 02:01:07,673 INFO L226 Difference]: Without dead ends: 10945 [2021-05-22 02:01:07,673 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:07,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10945 states. [2021-05-22 02:01:07,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10945 to 5251. [2021-05-22 02:01:07,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 4.743047619047619) internal successors, (24901), 5250 states have internal predecessors, (24901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:07,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 24901 transitions. [2021-05-22 02:01:07,926 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 24901 transitions. Word has length 29 [2021-05-22 02:01:07,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:07,927 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 24901 transitions. [2021-05-22 02:01:07,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:07,927 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 24901 transitions. [2021-05-22 02:01:07,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:07,935 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:07,935 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:07,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable461 [2021-05-22 02:01:07,936 INFO L430 AbstractCegarLoop]: === Iteration 463 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:07,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:07,936 INFO L82 PathProgramCache]: Analyzing trace with hash -802816155, now seen corresponding path program 458 times [2021-05-22 02:01:07,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:07,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438722440] [2021-05-22 02:01:07,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:08,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:08,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438722440] [2021-05-22 02:01:08,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438722440] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:08,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:08,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:08,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950013375] [2021-05-22 02:01:08,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:08,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:08,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:08,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:08,051 INFO L87 Difference]: Start difference. First operand 5251 states and 24901 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:08,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:08,149 INFO L93 Difference]: Finished difference Result 11360 states and 50809 transitions. [2021-05-22 02:01:08,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:08,149 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:08,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:08,178 INFO L225 Difference]: With dead ends: 11360 [2021-05-22 02:01:08,178 INFO L226 Difference]: Without dead ends: 10865 [2021-05-22 02:01:08,178 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:08,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10865 states. [2021-05-22 02:01:08,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10865 to 5171. [2021-05-22 02:01:08,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.752998065764023) internal successors, (24573), 5170 states have internal predecessors, (24573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:08,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24573 transitions. [2021-05-22 02:01:08,420 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24573 transitions. Word has length 29 [2021-05-22 02:01:08,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:08,420 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24573 transitions. [2021-05-22 02:01:08,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:08,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24573 transitions. [2021-05-22 02:01:08,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:08,430 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:08,430 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:08,430 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable462 [2021-05-22 02:01:08,430 INFO L430 AbstractCegarLoop]: === Iteration 464 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:08,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:08,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1076910235, now seen corresponding path program 459 times [2021-05-22 02:01:08,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:08,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741266273] [2021-05-22 02:01:08,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:08,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:08,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:08,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741266273] [2021-05-22 02:01:08,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741266273] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:08,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:08,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:08,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738234698] [2021-05-22 02:01:08,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:08,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:08,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:08,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:08,539 INFO L87 Difference]: Start difference. First operand 5171 states and 24573 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:08,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:08,642 INFO L93 Difference]: Finished difference Result 11577 states and 51787 transitions. [2021-05-22 02:01:08,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:08,642 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:08,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:08,671 INFO L225 Difference]: With dead ends: 11577 [2021-05-22 02:01:08,671 INFO L226 Difference]: Without dead ends: 11035 [2021-05-22 02:01:08,671 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:08,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11035 states. [2021-05-22 02:01:08,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11035 to 5281. [2021-05-22 02:01:08,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 5280 states have (on average 4.730681818181818) internal successors, (24978), 5280 states have internal predecessors, (24978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:08,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 24978 transitions. [2021-05-22 02:01:08,919 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 24978 transitions. Word has length 29 [2021-05-22 02:01:08,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:08,919 INFO L482 AbstractCegarLoop]: Abstraction has 5281 states and 24978 transitions. [2021-05-22 02:01:08,919 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:08,919 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 24978 transitions. [2021-05-22 02:01:08,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:08,928 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:08,928 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:08,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable463 [2021-05-22 02:01:08,928 INFO L430 AbstractCegarLoop]: === Iteration 465 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:08,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:08,928 INFO L82 PathProgramCache]: Analyzing trace with hash 241940197, now seen corresponding path program 460 times [2021-05-22 02:01:08,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:08,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776454258] [2021-05-22 02:01:08,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:09,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:09,037 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:09,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776454258] [2021-05-22 02:01:09,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776454258] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:09,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:09,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:09,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239983751] [2021-05-22 02:01:09,037 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:09,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:09,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:09,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:09,037 INFO L87 Difference]: Start difference. First operand 5281 states and 24978 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:09,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:09,153 INFO L93 Difference]: Finished difference Result 11510 states and 51414 transitions. [2021-05-22 02:01:09,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:09,153 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:09,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:09,183 INFO L225 Difference]: With dead ends: 11510 [2021-05-22 02:01:09,183 INFO L226 Difference]: Without dead ends: 10925 [2021-05-22 02:01:09,183 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:09,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10925 states. [2021-05-22 02:01:09,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10925 to 5171. [2021-05-22 02:01:09,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.745261121856866) internal successors, (24533), 5170 states have internal predecessors, (24533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:09,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24533 transitions. [2021-05-22 02:01:09,429 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24533 transitions. Word has length 29 [2021-05-22 02:01:09,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:09,429 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24533 transitions. [2021-05-22 02:01:09,429 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:09,429 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24533 transitions. [2021-05-22 02:01:09,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:09,438 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:09,438 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:09,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable464 [2021-05-22 02:01:09,438 INFO L430 AbstractCegarLoop]: === Iteration 466 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:09,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:09,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1625133767, now seen corresponding path program 461 times [2021-05-22 02:01:09,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:09,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495463303] [2021-05-22 02:01:09,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:09,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:09,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495463303] [2021-05-22 02:01:09,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495463303] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:09,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:09,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:09,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713817696] [2021-05-22 02:01:09,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:09,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:09,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:09,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:09,559 INFO L87 Difference]: Start difference. First operand 5171 states and 24533 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:09,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:09,656 INFO L93 Difference]: Finished difference Result 11261 states and 50402 transitions. [2021-05-22 02:01:09,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:09,657 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:09,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:09,686 INFO L225 Difference]: With dead ends: 11261 [2021-05-22 02:01:09,686 INFO L226 Difference]: Without dead ends: 10846 [2021-05-22 02:01:09,686 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:09,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10846 states. [2021-05-22 02:01:09,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10846 to 5219. [2021-05-22 02:01:09,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5219 states, 5218 states have (on average 4.73533921042545) internal successors, (24709), 5218 states have internal predecessors, (24709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 24709 transitions. [2021-05-22 02:01:09,935 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 24709 transitions. Word has length 29 [2021-05-22 02:01:09,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:09,936 INFO L482 AbstractCegarLoop]: Abstraction has 5219 states and 24709 transitions. [2021-05-22 02:01:09,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:09,936 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 24709 transitions. [2021-05-22 02:01:09,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:09,945 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:09,945 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:09,945 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable465 [2021-05-22 02:01:09,945 INFO L430 AbstractCegarLoop]: === Iteration 467 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:09,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:09,945 INFO L82 PathProgramCache]: Analyzing trace with hash 778336805, now seen corresponding path program 462 times [2021-05-22 02:01:09,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:09,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318838318] [2021-05-22 02:01:09,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:10,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:10,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318838318] [2021-05-22 02:01:10,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318838318] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:10,063 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:10,063 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:10,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776230351] [2021-05-22 02:01:10,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:10,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:10,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:10,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:10,064 INFO L87 Difference]: Start difference. First operand 5219 states and 24709 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:10,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:10,172 INFO L93 Difference]: Finished difference Result 11321 states and 50618 transitions. [2021-05-22 02:01:10,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:10,172 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:10,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:10,200 INFO L225 Difference]: With dead ends: 11321 [2021-05-22 02:01:10,201 INFO L226 Difference]: Without dead ends: 10758 [2021-05-22 02:01:10,201 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10758 states. [2021-05-22 02:01:10,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10758 to 5131. [2021-05-22 02:01:10,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.754191033138402) internal successors, (24389), 5130 states have internal predecessors, (24389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:10,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24389 transitions. [2021-05-22 02:01:10,457 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24389 transitions. Word has length 29 [2021-05-22 02:01:10,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:10,457 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24389 transitions. [2021-05-22 02:01:10,457 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:10,457 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24389 transitions. [2021-05-22 02:01:10,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:10,466 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:10,466 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:10,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable466 [2021-05-22 02:01:10,466 INFO L430 AbstractCegarLoop]: === Iteration 468 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:10,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:10,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1113593573, now seen corresponding path program 463 times [2021-05-22 02:01:10,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:10,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668626881] [2021-05-22 02:01:10,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:10,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:10,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668626881] [2021-05-22 02:01:10,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668626881] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:10,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:10,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:10,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45805069] [2021-05-22 02:01:10,584 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:10,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:10,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:10,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:10,585 INFO L87 Difference]: Start difference. First operand 5131 states and 24389 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:10,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:10,683 INFO L93 Difference]: Finished difference Result 11481 states and 51377 transitions. [2021-05-22 02:01:10,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:10,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:10,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:10,714 INFO L225 Difference]: With dead ends: 11481 [2021-05-22 02:01:10,714 INFO L226 Difference]: Without dead ends: 10939 [2021-05-22 02:01:10,714 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:10,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10939 states. [2021-05-22 02:01:10,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10939 to 5251. [2021-05-22 02:01:10,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 4.739238095238095) internal successors, (24881), 5250 states have internal predecessors, (24881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:10,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 24881 transitions. [2021-05-22 02:01:10,966 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 24881 transitions. Word has length 29 [2021-05-22 02:01:10,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:10,966 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 24881 transitions. [2021-05-22 02:01:10,966 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:10,966 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 24881 transitions. [2021-05-22 02:01:10,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:10,975 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:10,975 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:10,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable467 [2021-05-22 02:01:10,976 INFO L430 AbstractCegarLoop]: === Iteration 469 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:10,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:10,976 INFO L82 PathProgramCache]: Analyzing trace with hash 906785607, now seen corresponding path program 464 times [2021-05-22 02:01:10,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:10,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263180513] [2021-05-22 02:01:10,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:11,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:11,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263180513] [2021-05-22 02:01:11,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263180513] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:11,094 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:11,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:11,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826743371] [2021-05-22 02:01:11,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:11,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:11,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:11,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:11,094 INFO L87 Difference]: Start difference. First operand 5251 states and 24881 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:11,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:11,195 INFO L93 Difference]: Finished difference Result 11354 states and 50770 transitions. [2021-05-22 02:01:11,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:11,196 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:11,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:11,226 INFO L225 Difference]: With dead ends: 11354 [2021-05-22 02:01:11,226 INFO L226 Difference]: Without dead ends: 10859 [2021-05-22 02:01:11,226 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:11,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10859 states. [2021-05-22 02:01:11,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10859 to 5171. [2021-05-22 02:01:11,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.749129593810445) internal successors, (24553), 5170 states have internal predecessors, (24553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:11,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24553 transitions. [2021-05-22 02:01:11,480 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24553 transitions. Word has length 29 [2021-05-22 02:01:11,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:11,480 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24553 transitions. [2021-05-22 02:01:11,480 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:11,480 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24553 transitions. [2021-05-22 02:01:11,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:11,490 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:11,490 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:11,490 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable468 [2021-05-22 02:01:11,491 INFO L430 AbstractCegarLoop]: === Iteration 470 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:11,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:11,491 INFO L82 PathProgramCache]: Analyzing trace with hash -2088403227, now seen corresponding path program 465 times [2021-05-22 02:01:11,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:11,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143941966] [2021-05-22 02:01:11,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:11,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:11,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:11,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143941966] [2021-05-22 02:01:11,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143941966] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:11,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:11,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:11,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079032439] [2021-05-22 02:01:11,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:11,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:11,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:11,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:11,613 INFO L87 Difference]: Start difference. First operand 5171 states and 24553 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:11,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:11,707 INFO L93 Difference]: Finished difference Result 11565 states and 51729 transitions. [2021-05-22 02:01:11,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:11,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:11,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:11,737 INFO L225 Difference]: With dead ends: 11565 [2021-05-22 02:01:11,737 INFO L226 Difference]: Without dead ends: 11023 [2021-05-22 02:01:11,738 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:11,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11023 states. [2021-05-22 02:01:11,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11023 to 5279. [2021-05-22 02:01:11,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5279 states, 5278 states have (on average 4.7277377794619175) internal successors, (24953), 5278 states have internal predecessors, (24953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:11,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5279 states to 5279 states and 24953 transitions. [2021-05-22 02:01:11,981 INFO L78 Accepts]: Start accepts. Automaton has 5279 states and 24953 transitions. Word has length 29 [2021-05-22 02:01:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:11,981 INFO L482 AbstractCegarLoop]: Abstraction has 5279 states and 24953 transitions. [2021-05-22 02:01:11,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:11,981 INFO L276 IsEmpty]: Start isEmpty. Operand 5279 states and 24953 transitions. [2021-05-22 02:01:11,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:11,990 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:11,990 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:11,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable469 [2021-05-22 02:01:11,990 INFO L430 AbstractCegarLoop]: === Iteration 471 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:11,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:11,990 INFO L82 PathProgramCache]: Analyzing trace with hash 968261221, now seen corresponding path program 466 times [2021-05-22 02:01:11,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:11,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950227082] [2021-05-22 02:01:11,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:12,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:12,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:12,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950227082] [2021-05-22 02:01:12,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950227082] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:12,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:12,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:12,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092231781] [2021-05-22 02:01:12,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:12,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:12,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:12,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:12,111 INFO L87 Difference]: Start difference. First operand 5279 states and 24953 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:12,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:12,231 INFO L93 Difference]: Finished difference Result 11494 states and 51346 transitions. [2021-05-22 02:01:12,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:12,231 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:12,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:12,260 INFO L225 Difference]: With dead ends: 11494 [2021-05-22 02:01:12,261 INFO L226 Difference]: Without dead ends: 10915 [2021-05-22 02:01:12,261 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:12,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10915 states. [2021-05-22 02:01:12,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10915 to 5171. [2021-05-22 02:01:12,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.741392649903288) internal successors, (24513), 5170 states have internal predecessors, (24513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:12,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24513 transitions. [2021-05-22 02:01:12,503 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24513 transitions. Word has length 29 [2021-05-22 02:01:12,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:12,503 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24513 transitions. [2021-05-22 02:01:12,503 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:12,504 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24513 transitions. [2021-05-22 02:01:12,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:12,512 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:12,512 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:12,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable470 [2021-05-22 02:01:12,512 INFO L430 AbstractCegarLoop]: === Iteration 472 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:12,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:12,513 INFO L82 PathProgramCache]: Analyzing trace with hash 613640775, now seen corresponding path program 467 times [2021-05-22 02:01:12,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:12,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195048175] [2021-05-22 02:01:12,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:12,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:12,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:12,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195048175] [2021-05-22 02:01:12,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195048175] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:12,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:12,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:12,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470581341] [2021-05-22 02:01:12,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:12,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:12,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:12,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:12,635 INFO L87 Difference]: Start difference. First operand 5171 states and 24513 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:12,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:12,733 INFO L93 Difference]: Finished difference Result 11251 states and 50351 transitions. [2021-05-22 02:01:12,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:12,734 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:12,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:12,762 INFO L225 Difference]: With dead ends: 11251 [2021-05-22 02:01:12,763 INFO L226 Difference]: Without dead ends: 10836 [2021-05-22 02:01:12,763 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:12,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10836 states. [2021-05-22 02:01:12,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10836 to 5219. [2021-05-22 02:01:12,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5219 states, 5218 states have (on average 4.7315063242621695) internal successors, (24689), 5218 states have internal predecessors, (24689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:13,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 24689 transitions. [2021-05-22 02:01:13,009 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 24689 transitions. Word has length 29 [2021-05-22 02:01:13,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:13,009 INFO L482 AbstractCegarLoop]: Abstraction has 5219 states and 24689 transitions. [2021-05-22 02:01:13,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:13,009 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 24689 transitions. [2021-05-22 02:01:13,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:13,018 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:13,018 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:13,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable471 [2021-05-22 02:01:13,018 INFO L430 AbstractCegarLoop]: === Iteration 473 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:13,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:13,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1502438875, now seen corresponding path program 468 times [2021-05-22 02:01:13,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:13,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027359383] [2021-05-22 02:01:13,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:13,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:13,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027359383] [2021-05-22 02:01:13,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027359383] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:13,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:13,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:13,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787364970] [2021-05-22 02:01:13,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:13,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:13,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:13,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:13,140 INFO L87 Difference]: Start difference. First operand 5219 states and 24689 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:13,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:13,249 INFO L93 Difference]: Finished difference Result 11307 states and 50555 transitions. [2021-05-22 02:01:13,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:13,249 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:13,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:13,278 INFO L225 Difference]: With dead ends: 11307 [2021-05-22 02:01:13,278 INFO L226 Difference]: Without dead ends: 10748 [2021-05-22 02:01:13,278 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:13,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10748 states. [2021-05-22 02:01:13,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10748 to 5131. [2021-05-22 02:01:13,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.750292397660819) internal successors, (24369), 5130 states have internal predecessors, (24369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:13,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24369 transitions. [2021-05-22 02:01:13,518 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24369 transitions. Word has length 29 [2021-05-22 02:01:13,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:13,518 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24369 transitions. [2021-05-22 02:01:13,518 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:13,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24369 transitions. [2021-05-22 02:01:13,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:13,527 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:13,527 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:13,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable472 [2021-05-22 02:01:13,528 INFO L430 AbstractCegarLoop]: === Iteration 474 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:13,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:13,528 INFO L82 PathProgramCache]: Analyzing trace with hash 324207303, now seen corresponding path program 469 times [2021-05-22 02:01:13,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:13,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562858134] [2021-05-22 02:01:13,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:13,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:13,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:13,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562858134] [2021-05-22 02:01:13,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562858134] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:13,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:13,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:13,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208784890] [2021-05-22 02:01:13,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:13,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:13,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:13,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:13,632 INFO L87 Difference]: Start difference. First operand 5131 states and 24369 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:13,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:13,731 INFO L93 Difference]: Finished difference Result 11703 states and 52396 transitions. [2021-05-22 02:01:13,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:13,732 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:13,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:13,761 INFO L225 Difference]: With dead ends: 11703 [2021-05-22 02:01:13,761 INFO L226 Difference]: Without dead ends: 11161 [2021-05-22 02:01:13,761 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 109.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:13,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11161 states. [2021-05-22 02:01:13,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11161 to 5295. [2021-05-22 02:01:14,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5295 states, 5294 states have (on average 4.732716282584057) internal successors, (25055), 5294 states have internal predecessors, (25055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 25055 transitions. [2021-05-22 02:01:14,016 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 25055 transitions. Word has length 29 [2021-05-22 02:01:14,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:14,016 INFO L482 AbstractCegarLoop]: Abstraction has 5295 states and 25055 transitions. [2021-05-22 02:01:14,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:14,016 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 25055 transitions. [2021-05-22 02:01:14,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:14,025 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:14,025 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:14,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable473 [2021-05-22 02:01:14,025 INFO L430 AbstractCegarLoop]: === Iteration 475 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:14,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:14,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1643057735, now seen corresponding path program 470 times [2021-05-22 02:01:14,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:14,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786852868] [2021-05-22 02:01:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:14,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:14,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:14,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786852868] [2021-05-22 02:01:14,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786852868] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:14,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:14,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:14,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798587154] [2021-05-22 02:01:14,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:14,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:14,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:14,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:14,128 INFO L87 Difference]: Start difference. First operand 5295 states and 25055 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:14,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:14,253 INFO L93 Difference]: Finished difference Result 11636 states and 52023 transitions. [2021-05-22 02:01:14,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:14,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:14,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:14,283 INFO L225 Difference]: With dead ends: 11636 [2021-05-22 02:01:14,284 INFO L226 Difference]: Without dead ends: 11051 [2021-05-22 02:01:14,284 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:14,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11051 states. [2021-05-22 02:01:14,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11051 to 5185. [2021-05-22 02:01:14,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.744598765432099) internal successors, (24596), 5184 states have internal predecessors, (24596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:14,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24596 transitions. [2021-05-22 02:01:14,526 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24596 transitions. Word has length 29 [2021-05-22 02:01:14,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:14,526 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24596 transitions. [2021-05-22 02:01:14,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:14,526 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24596 transitions. [2021-05-22 02:01:14,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:14,535 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:14,535 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:14,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable474 [2021-05-22 02:01:14,535 INFO L430 AbstractCegarLoop]: === Iteration 476 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:14,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:14,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1698854235, now seen corresponding path program 471 times [2021-05-22 02:01:14,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:14,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27294036] [2021-05-22 02:01:14,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:14,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:14,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:14,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27294036] [2021-05-22 02:01:14,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27294036] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:14,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:14,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:14,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705975707] [2021-05-22 02:01:14,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:14,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:14,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:14,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:14,653 INFO L87 Difference]: Start difference. First operand 5185 states and 24596 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:14,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:14,755 INFO L93 Difference]: Finished difference Result 11697 states and 52323 transitions. [2021-05-22 02:01:14,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:14,756 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:14,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:14,786 INFO L225 Difference]: With dead ends: 11697 [2021-05-22 02:01:14,786 INFO L226 Difference]: Without dead ends: 11155 [2021-05-22 02:01:14,786 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:14,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11155 states. [2021-05-22 02:01:15,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11155 to 5293. [2021-05-22 02:01:15,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5293 states, 5292 states have (on average 4.723356009070295) internal successors, (24996), 5292 states have internal predecessors, (24996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:15,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 24996 transitions. [2021-05-22 02:01:15,037 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 24996 transitions. Word has length 29 [2021-05-22 02:01:15,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:15,038 INFO L482 AbstractCegarLoop]: Abstraction has 5293 states and 24996 transitions. [2021-05-22 02:01:15,038 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:15,038 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 24996 transitions. [2021-05-22 02:01:15,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:15,047 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:15,047 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:15,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable475 [2021-05-22 02:01:15,047 INFO L430 AbstractCegarLoop]: === Iteration 477 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:15,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:15,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1617104313, now seen corresponding path program 472 times [2021-05-22 02:01:15,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:15,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157987348] [2021-05-22 02:01:15,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:15,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:15,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:15,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157987348] [2021-05-22 02:01:15,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157987348] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:15,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:15,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:15,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175382005] [2021-05-22 02:01:15,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:15,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:15,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:15,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:15,161 INFO L87 Difference]: Start difference. First operand 5293 states and 24996 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:15,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:15,290 INFO L93 Difference]: Finished difference Result 11626 states and 51940 transitions. [2021-05-22 02:01:15,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:15,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:15,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:15,319 INFO L225 Difference]: With dead ends: 11626 [2021-05-22 02:01:15,319 INFO L226 Difference]: Without dead ends: 11047 [2021-05-22 02:01:15,319 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:15,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11047 states. [2021-05-22 02:01:15,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11047 to 5185. [2021-05-22 02:01:15,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.734182098765432) internal successors, (24542), 5184 states have internal predecessors, (24542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:15,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24542 transitions. [2021-05-22 02:01:15,563 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24542 transitions. Word has length 29 [2021-05-22 02:01:15,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:15,563 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24542 transitions. [2021-05-22 02:01:15,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:15,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24542 transitions. [2021-05-22 02:01:15,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:15,572 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:15,572 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:15,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable476 [2021-05-22 02:01:15,572 INFO L430 AbstractCegarLoop]: === Iteration 478 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:15,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:15,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1339961799, now seen corresponding path program 473 times [2021-05-22 02:01:15,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:15,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909913236] [2021-05-22 02:01:15,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:15,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:15,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909913236] [2021-05-22 02:01:15,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909913236] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:15,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:15,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:15,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447948011] [2021-05-22 02:01:15,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:15,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:15,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:15,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:15,676 INFO L87 Difference]: Start difference. First operand 5185 states and 24542 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:15,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:15,783 INFO L93 Difference]: Finished difference Result 11531 states and 51599 transitions. [2021-05-22 02:01:15,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:15,784 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:15,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:15,813 INFO L225 Difference]: With dead ends: 11531 [2021-05-22 02:01:15,813 INFO L226 Difference]: Without dead ends: 11056 [2021-05-22 02:01:15,813 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:15,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11056 states. [2021-05-22 02:01:16,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11056 to 5261. [2021-05-22 02:01:16,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 4.720532319391635) internal successors, (24830), 5260 states have internal predecessors, (24830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:16,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 24830 transitions. [2021-05-22 02:01:16,061 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 24830 transitions. Word has length 29 [2021-05-22 02:01:16,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:16,062 INFO L482 AbstractCegarLoop]: Abstraction has 5261 states and 24830 transitions. [2021-05-22 02:01:16,062 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:16,062 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 24830 transitions. [2021-05-22 02:01:16,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:16,073 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:16,074 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:16,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable477 [2021-05-22 02:01:16,074 INFO L430 AbstractCegarLoop]: === Iteration 479 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:16,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:16,074 INFO L82 PathProgramCache]: Analyzing trace with hash 493164837, now seen corresponding path program 474 times [2021-05-22 02:01:16,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:16,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694852235] [2021-05-22 02:01:16,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:16,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:16,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:16,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694852235] [2021-05-22 02:01:16,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694852235] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:16,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:16,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:16,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214576035] [2021-05-22 02:01:16,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:16,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:16,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:16,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:16,178 INFO L87 Difference]: Start difference. First operand 5261 states and 24830 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:16,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:16,290 INFO L93 Difference]: Finished difference Result 11527 states and 51511 transitions. [2021-05-22 02:01:16,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:16,291 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:16,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:16,319 INFO L225 Difference]: With dead ends: 11527 [2021-05-22 02:01:16,320 INFO L226 Difference]: Without dead ends: 10926 [2021-05-22 02:01:16,320 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:16,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10926 states. [2021-05-22 02:01:16,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10926 to 5131. [2021-05-22 02:01:16,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.746393762183236) internal successors, (24349), 5130 states have internal predecessors, (24349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:16,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24349 transitions. [2021-05-22 02:01:16,615 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24349 transitions. Word has length 29 [2021-05-22 02:01:16,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:16,615 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24349 transitions. [2021-05-22 02:01:16,615 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:16,615 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24349 transitions. [2021-05-22 02:01:16,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:16,625 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:16,625 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:16,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable478 [2021-05-22 02:01:16,625 INFO L430 AbstractCegarLoop]: === Iteration 480 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:16,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:16,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1885684439, now seen corresponding path program 475 times [2021-05-22 02:01:16,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:16,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045735675] [2021-05-22 02:01:16,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:16,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:16,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045735675] [2021-05-22 02:01:16,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045735675] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:16,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:16,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:16,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050399982] [2021-05-22 02:01:16,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:16,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:16,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:16,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:16,743 INFO L87 Difference]: Start difference. First operand 5131 states and 24349 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:16,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:16,838 INFO L93 Difference]: Finished difference Result 11108 states and 49772 transitions. [2021-05-22 02:01:16,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:16,838 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:16,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:16,867 INFO L225 Difference]: With dead ends: 11108 [2021-05-22 02:01:16,867 INFO L226 Difference]: Without dead ends: 10693 [2021-05-22 02:01:16,868 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:16,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10693 states. [2021-05-22 02:01:17,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10693 to 5203. [2021-05-22 02:01:17,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.738369857747021) internal successors, (24649), 5202 states have internal predecessors, (24649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:17,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24649 transitions. [2021-05-22 02:01:17,112 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24649 transitions. Word has length 29 [2021-05-22 02:01:17,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:17,112 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24649 transitions. [2021-05-22 02:01:17,112 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:17,112 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24649 transitions. [2021-05-22 02:01:17,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:17,121 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:17,121 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:17,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable479 [2021-05-22 02:01:17,121 INFO L430 AbstractCegarLoop]: === Iteration 481 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:17,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:17,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1562485895, now seen corresponding path program 476 times [2021-05-22 02:01:17,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:17,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819262461] [2021-05-22 02:01:17,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:17,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:17,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819262461] [2021-05-22 02:01:17,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819262461] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:17,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:17,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:17,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375403566] [2021-05-22 02:01:17,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:17,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:17,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:17,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:17,240 INFO L87 Difference]: Start difference. First operand 5203 states and 24649 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:17,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:17,353 INFO L93 Difference]: Finished difference Result 11168 states and 49988 transitions. [2021-05-22 02:01:17,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:17,353 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:17,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:17,383 INFO L225 Difference]: With dead ends: 11168 [2021-05-22 02:01:17,383 INFO L226 Difference]: Without dead ends: 10645 [2021-05-22 02:01:17,383 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:17,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10645 states. [2021-05-22 02:01:17,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10645 to 5155. [2021-05-22 02:01:17,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.743694218083042) internal successors, (24449), 5154 states have internal predecessors, (24449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:17,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24449 transitions. [2021-05-22 02:01:17,620 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24449 transitions. Word has length 29 [2021-05-22 02:01:17,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:17,621 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24449 transitions. [2021-05-22 02:01:17,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:17,621 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24449 transitions. [2021-05-22 02:01:17,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:17,629 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:17,630 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:17,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable480 [2021-05-22 02:01:17,630 INFO L430 AbstractCegarLoop]: === Iteration 482 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:17,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:17,630 INFO L82 PathProgramCache]: Analyzing trace with hash 386221319, now seen corresponding path program 477 times [2021-05-22 02:01:17,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:17,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17317355] [2021-05-22 02:01:17,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:17,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:17,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17317355] [2021-05-22 02:01:17,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17317355] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:17,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:17,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:17,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919508331] [2021-05-22 02:01:17,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:17,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:17,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:17,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:17,750 INFO L87 Difference]: Start difference. First operand 5155 states and 24449 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:17,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:17,844 INFO L93 Difference]: Finished difference Result 11104 states and 49736 transitions. [2021-05-22 02:01:17,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:17,844 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:17,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:17,872 INFO L225 Difference]: With dead ends: 11104 [2021-05-22 02:01:17,872 INFO L226 Difference]: Without dead ends: 10689 [2021-05-22 02:01:17,872 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:17,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10689 states. [2021-05-22 02:01:18,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10689 to 5203. [2021-05-22 02:01:18,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.7337562475970785) internal successors, (24625), 5202 states have internal predecessors, (24625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:18,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24625 transitions. [2021-05-22 02:01:18,116 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24625 transitions. Word has length 29 [2021-05-22 02:01:18,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:18,116 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24625 transitions. [2021-05-22 02:01:18,116 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:18,116 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24625 transitions. [2021-05-22 02:01:18,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:18,125 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:18,125 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:18,125 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable481 [2021-05-22 02:01:18,125 INFO L430 AbstractCegarLoop]: === Iteration 483 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:18,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:18,126 INFO L82 PathProgramCache]: Analyzing trace with hash -409805561, now seen corresponding path program 478 times [2021-05-22 02:01:18,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:18,126 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158535312] [2021-05-22 02:01:18,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:18,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:18,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158535312] [2021-05-22 02:01:18,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158535312] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:18,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:18,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:18,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744705043] [2021-05-22 02:01:18,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:18,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:18,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:18,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:18,245 INFO L87 Difference]: Start difference. First operand 5203 states and 24625 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:18,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:18,374 INFO L93 Difference]: Finished difference Result 11160 states and 49940 transitions. [2021-05-22 02:01:18,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:18,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:18,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:18,408 INFO L225 Difference]: With dead ends: 11160 [2021-05-22 02:01:18,408 INFO L226 Difference]: Without dead ends: 10641 [2021-05-22 02:01:18,409 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:18,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10641 states. [2021-05-22 02:01:18,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10641 to 5155. [2021-05-22 02:01:18,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.739037640667442) internal successors, (24425), 5154 states have internal predecessors, (24425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:18,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24425 transitions. [2021-05-22 02:01:18,655 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24425 transitions. Word has length 29 [2021-05-22 02:01:18,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:18,655 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24425 transitions. [2021-05-22 02:01:18,655 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:18,655 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24425 transitions. [2021-05-22 02:01:18,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:18,664 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:18,664 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:18,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable482 [2021-05-22 02:01:18,664 INFO L430 AbstractCegarLoop]: === Iteration 484 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:18,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:18,665 INFO L82 PathProgramCache]: Analyzing trace with hash -470526747, now seen corresponding path program 479 times [2021-05-22 02:01:18,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:18,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970128936] [2021-05-22 02:01:18,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:18,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:18,773 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:18,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970128936] [2021-05-22 02:01:18,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970128936] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:18,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:18,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:18,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086951402] [2021-05-22 02:01:18,774 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:18,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:18,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:18,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:18,774 INFO L87 Difference]: Start difference. First operand 5155 states and 24425 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:18,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:18,881 INFO L93 Difference]: Finished difference Result 11252 states and 50380 transitions. [2021-05-22 02:01:18,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:18,881 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:18,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:18,909 INFO L225 Difference]: With dead ends: 11252 [2021-05-22 02:01:18,909 INFO L226 Difference]: Without dead ends: 10777 [2021-05-22 02:01:18,909 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:19,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10777 states. [2021-05-22 02:01:19,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10777 to 5231. [2021-05-22 02:01:19,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5231 states, 5230 states have (on average 4.725239005736138) internal successors, (24713), 5230 states have internal predecessors, (24713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:19,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5231 states to 5231 states and 24713 transitions. [2021-05-22 02:01:19,155 INFO L78 Accepts]: Start accepts. Automaton has 5231 states and 24713 transitions. Word has length 29 [2021-05-22 02:01:19,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:19,155 INFO L482 AbstractCegarLoop]: Abstraction has 5231 states and 24713 transitions. [2021-05-22 02:01:19,155 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:19,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5231 states and 24713 transitions. [2021-05-22 02:01:19,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:19,164 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:19,164 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:19,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable483 [2021-05-22 02:01:19,164 INFO L430 AbstractCegarLoop]: === Iteration 485 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:19,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:19,165 INFO L82 PathProgramCache]: Analyzing trace with hash -951428793, now seen corresponding path program 480 times [2021-05-22 02:01:19,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:19,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413023441] [2021-05-22 02:01:19,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:19,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:19,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:19,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413023441] [2021-05-22 02:01:19,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413023441] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:19,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:19,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:19,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844974684] [2021-05-22 02:01:19,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:19,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:19,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:19,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:19,276 INFO L87 Difference]: Start difference. First operand 5231 states and 24713 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:19,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:19,402 INFO L93 Difference]: Finished difference Result 11248 states and 50292 transitions. [2021-05-22 02:01:19,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:19,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:19,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:19,431 INFO L225 Difference]: With dead ends: 11248 [2021-05-22 02:01:19,431 INFO L226 Difference]: Without dead ends: 10649 [2021-05-22 02:01:19,432 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:19,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10649 states. [2021-05-22 02:01:19,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10649 to 5103. [2021-05-22 02:01:19,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5103 states, 5102 states have (on average 4.757546060368483) internal successors, (24273), 5102 states have internal predecessors, (24273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:19,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5103 states to 5103 states and 24273 transitions. [2021-05-22 02:01:19,677 INFO L78 Accepts]: Start accepts. Automaton has 5103 states and 24273 transitions. Word has length 29 [2021-05-22 02:01:19,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:19,677 INFO L482 AbstractCegarLoop]: Abstraction has 5103 states and 24273 transitions. [2021-05-22 02:01:19,677 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:19,678 INFO L276 IsEmpty]: Start isEmpty. Operand 5103 states and 24273 transitions. [2021-05-22 02:01:19,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:19,687 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:19,687 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:19,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable484 [2021-05-22 02:01:19,687 INFO L430 AbstractCegarLoop]: === Iteration 486 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:19,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:19,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1716000441, now seen corresponding path program 481 times [2021-05-22 02:01:19,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:19,687 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151374178] [2021-05-22 02:01:19,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:19,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:19,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:19,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151374178] [2021-05-22 02:01:19,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151374178] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:19,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:19,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:19,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086376742] [2021-05-22 02:01:19,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:19,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:19,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:19,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:19,804 INFO L87 Difference]: Start difference. First operand 5103 states and 24273 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:19,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:19,913 INFO L93 Difference]: Finished difference Result 10300 states and 46061 transitions. [2021-05-22 02:01:19,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:19,913 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:19,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:19,940 INFO L225 Difference]: With dead ends: 10300 [2021-05-22 02:01:19,940 INFO L226 Difference]: Without dead ends: 9885 [2021-05-22 02:01:19,940 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:20,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9885 states. [2021-05-22 02:01:20,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9885 to 5179. [2021-05-22 02:01:20,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.750289687137891) internal successors, (24597), 5178 states have internal predecessors, (24597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:20,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24597 transitions. [2021-05-22 02:01:20,178 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24597 transitions. Word has length 29 [2021-05-22 02:01:20,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:20,178 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24597 transitions. [2021-05-22 02:01:20,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:20,178 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24597 transitions. [2021-05-22 02:01:20,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:20,188 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:20,188 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:20,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable485 [2021-05-22 02:01:20,188 INFO L430 AbstractCegarLoop]: === Iteration 487 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:20,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:20,188 INFO L82 PathProgramCache]: Analyzing trace with hash -999337495, now seen corresponding path program 482 times [2021-05-22 02:01:20,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:20,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501790599] [2021-05-22 02:01:20,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:20,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:20,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:20,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501790599] [2021-05-22 02:01:20,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501790599] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:20,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:20,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:20,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095171911] [2021-05-22 02:01:20,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:20,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:20,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:20,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:20,305 INFO L87 Difference]: Start difference. First operand 5179 states and 24597 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:20,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:20,415 INFO L93 Difference]: Finished difference Result 10362 states and 46282 transitions. [2021-05-22 02:01:20,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:20,416 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:20,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:20,443 INFO L225 Difference]: With dead ends: 10362 [2021-05-22 02:01:20,443 INFO L226 Difference]: Without dead ends: 9837 [2021-05-22 02:01:20,444 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:20,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9837 states. [2021-05-22 02:01:20,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9837 to 5131. [2021-05-22 02:01:20,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.757309941520468) internal successors, (24405), 5130 states have internal predecessors, (24405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:20,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24405 transitions. [2021-05-22 02:01:20,678 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24405 transitions. Word has length 29 [2021-05-22 02:01:20,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:20,678 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24405 transitions. [2021-05-22 02:01:20,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:20,678 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24405 transitions. [2021-05-22 02:01:20,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:20,687 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:20,687 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:20,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable486 [2021-05-22 02:01:20,687 INFO L430 AbstractCegarLoop]: === Iteration 488 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:20,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:20,687 INFO L82 PathProgramCache]: Analyzing trace with hash 2098064809, now seen corresponding path program 483 times [2021-05-22 02:01:20,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:20,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422563671] [2021-05-22 02:01:20,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:20,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:20,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:20,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422563671] [2021-05-22 02:01:20,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422563671] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:20,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:20,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:20,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400565160] [2021-05-22 02:01:20,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:20,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:20,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:20,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:20,797 INFO L87 Difference]: Start difference. First operand 5131 states and 24405 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:20,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:20,920 INFO L93 Difference]: Finished difference Result 10222 states and 45696 transitions. [2021-05-22 02:01:20,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:20,920 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:20,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:20,946 INFO L225 Difference]: With dead ends: 10222 [2021-05-22 02:01:20,946 INFO L226 Difference]: Without dead ends: 9807 [2021-05-22 02:01:20,946 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:21,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9807 states. [2021-05-22 02:01:21,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9807 to 5163. [2021-05-22 02:01:21,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 4.749515691592406) internal successors, (24517), 5162 states have internal predecessors, (24517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 24517 transitions. [2021-05-22 02:01:21,177 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 24517 transitions. Word has length 29 [2021-05-22 02:01:21,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:21,177 INFO L482 AbstractCegarLoop]: Abstraction has 5163 states and 24517 transitions. [2021-05-22 02:01:21,177 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:21,177 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 24517 transitions. [2021-05-22 02:01:21,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:21,186 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:21,186 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:21,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable487 [2021-05-22 02:01:21,186 INFO L430 AbstractCegarLoop]: === Iteration 489 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:21,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:21,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1785494491, now seen corresponding path program 484 times [2021-05-22 02:01:21,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:21,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840134354] [2021-05-22 02:01:21,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:21,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:21,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:21,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840134354] [2021-05-22 02:01:21,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840134354] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:21,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:21,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:21,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013155193] [2021-05-22 02:01:21,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:21,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:21,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:21,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:21,297 INFO L87 Difference]: Start difference. First operand 5163 states and 24517 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:21,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:21,405 INFO L93 Difference]: Finished difference Result 10222 states and 45664 transitions. [2021-05-22 02:01:21,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:21,405 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:21,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:21,431 INFO L225 Difference]: With dead ends: 10222 [2021-05-22 02:01:21,431 INFO L226 Difference]: Without dead ends: 9775 [2021-05-22 02:01:21,431 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:21,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9775 states. [2021-05-22 02:01:21,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9775 to 5131. [2021-05-22 02:01:21,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.754191033138402) internal successors, (24389), 5130 states have internal predecessors, (24389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:21,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24389 transitions. [2021-05-22 02:01:21,666 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24389 transitions. Word has length 29 [2021-05-22 02:01:21,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:21,667 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24389 transitions. [2021-05-22 02:01:21,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:21,667 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24389 transitions. [2021-05-22 02:01:21,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:21,676 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:21,676 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:21,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable488 [2021-05-22 02:01:21,676 INFO L430 AbstractCegarLoop]: === Iteration 490 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:21,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:21,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1649799003, now seen corresponding path program 485 times [2021-05-22 02:01:21,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:21,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650498006] [2021-05-22 02:01:21,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:21,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:21,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:21,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650498006] [2021-05-22 02:01:21,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650498006] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:21,793 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:21,793 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:21,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641285549] [2021-05-22 02:01:21,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:21,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:21,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:21,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:21,793 INFO L87 Difference]: Start difference. First operand 5131 states and 24389 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:21,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:21,917 INFO L93 Difference]: Finished difference Result 10362 states and 46298 transitions. [2021-05-22 02:01:21,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:21,917 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:21,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:21,944 INFO L225 Difference]: With dead ends: 10362 [2021-05-22 02:01:21,945 INFO L226 Difference]: Without dead ends: 9885 [2021-05-22 02:01:21,945 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:22,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9885 states. [2021-05-22 02:01:22,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9885 to 5179. [2021-05-22 02:01:22,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.744109694862882) internal successors, (24565), 5178 states have internal predecessors, (24565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:22,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24565 transitions. [2021-05-22 02:01:22,177 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24565 transitions. Word has length 29 [2021-05-22 02:01:22,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:22,178 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24565 transitions. [2021-05-22 02:01:22,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:22,178 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24565 transitions. [2021-05-22 02:01:22,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:22,186 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:22,186 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:22,187 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable489 [2021-05-22 02:01:22,187 INFO L430 AbstractCegarLoop]: === Iteration 491 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:22,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:22,187 INFO L82 PathProgramCache]: Analyzing trace with hash -568736377, now seen corresponding path program 486 times [2021-05-22 02:01:22,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:22,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854701076] [2021-05-22 02:01:22,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:22,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:22,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:22,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854701076] [2021-05-22 02:01:22,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854701076] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:22,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:22,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:22,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321812697] [2021-05-22 02:01:22,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:22,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:22,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:22,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:22,305 INFO L87 Difference]: Start difference. First operand 5179 states and 24565 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:22,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:22,401 INFO L93 Difference]: Finished difference Result 10300 states and 45981 transitions. [2021-05-22 02:01:22,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:22,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:22,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:22,429 INFO L225 Difference]: With dead ends: 10300 [2021-05-22 02:01:22,429 INFO L226 Difference]: Without dead ends: 9821 [2021-05-22 02:01:22,429 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:22,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9821 states. [2021-05-22 02:01:22,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9821 to 5115. [2021-05-22 02:01:22,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 4.758114978490418) internal successors, (24333), 5114 states have internal predecessors, (24333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:22,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 24333 transitions. [2021-05-22 02:01:22,658 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 24333 transitions. Word has length 29 [2021-05-22 02:01:22,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:22,658 INFO L482 AbstractCegarLoop]: Abstraction has 5115 states and 24333 transitions. [2021-05-22 02:01:22,658 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:22,658 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 24333 transitions. [2021-05-22 02:01:22,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:22,667 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:22,667 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:22,667 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable490 [2021-05-22 02:01:22,667 INFO L430 AbstractCegarLoop]: === Iteration 492 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:22,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:22,667 INFO L82 PathProgramCache]: Analyzing trace with hash -6398679, now seen corresponding path program 487 times [2021-05-22 02:01:22,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:22,667 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165115964] [2021-05-22 02:01:22,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:22,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:22,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165115964] [2021-05-22 02:01:22,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165115964] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:22,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:22,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:22,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652843955] [2021-05-22 02:01:22,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:22,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:22,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:22,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:22,793 INFO L87 Difference]: Start difference. First operand 5115 states and 24333 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:22,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:22,899 INFO L93 Difference]: Finished difference Result 10414 states and 46588 transitions. [2021-05-22 02:01:22,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:22,899 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:22,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:22,926 INFO L225 Difference]: With dead ends: 10414 [2021-05-22 02:01:22,927 INFO L226 Difference]: Without dead ends: 9999 [2021-05-22 02:01:22,927 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:23,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9999 states. [2021-05-22 02:01:23,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9999 to 5187. [2021-05-22 02:01:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.749903586579252) internal successors, (24633), 5186 states have internal predecessors, (24633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:23,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24633 transitions. [2021-05-22 02:01:23,167 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24633 transitions. Word has length 29 [2021-05-22 02:01:23,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:23,167 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24633 transitions. [2021-05-22 02:01:23,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:23,167 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24633 transitions. [2021-05-22 02:01:23,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:23,176 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:23,176 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:23,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable491 [2021-05-22 02:01:23,176 INFO L430 AbstractCegarLoop]: === Iteration 493 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:23,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:23,177 INFO L82 PathProgramCache]: Analyzing trace with hash 710264267, now seen corresponding path program 488 times [2021-05-22 02:01:23,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:23,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247058444] [2021-05-22 02:01:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:23,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:23,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:23,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247058444] [2021-05-22 02:01:23,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247058444] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:23,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:23,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:23,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129687741] [2021-05-22 02:01:23,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:23,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:23,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:23,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:23,298 INFO L87 Difference]: Start difference. First operand 5187 states and 24633 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:23,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:23,403 INFO L93 Difference]: Finished difference Result 10476 states and 46809 transitions. [2021-05-22 02:01:23,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:23,403 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:23,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:23,431 INFO L225 Difference]: With dead ends: 10476 [2021-05-22 02:01:23,431 INFO L226 Difference]: Without dead ends: 9951 [2021-05-22 02:01:23,431 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:23,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9951 states. [2021-05-22 02:01:23,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9951 to 5139. [2021-05-22 02:01:23,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.755352277150642) internal successors, (24433), 5138 states have internal predecessors, (24433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:23,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24433 transitions. [2021-05-22 02:01:23,669 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24433 transitions. Word has length 29 [2021-05-22 02:01:23,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:23,669 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24433 transitions. [2021-05-22 02:01:23,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:23,669 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24433 transitions. [2021-05-22 02:01:23,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:23,678 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:23,678 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:23,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable492 [2021-05-22 02:01:23,678 INFO L430 AbstractCegarLoop]: === Iteration 494 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:23,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:23,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1086571817, now seen corresponding path program 489 times [2021-05-22 02:01:23,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:23,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897669452] [2021-05-22 02:01:23,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:23,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:23,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897669452] [2021-05-22 02:01:23,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897669452] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:23,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:23,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:23,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253509442] [2021-05-22 02:01:23,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:23,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:23,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:23,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:23,803 INFO L87 Difference]: Start difference. First operand 5139 states and 24433 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:23,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:23,924 INFO L93 Difference]: Finished difference Result 10412 states and 46559 transitions. [2021-05-22 02:01:23,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:23,925 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:23,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:23,952 INFO L225 Difference]: With dead ends: 10412 [2021-05-22 02:01:23,952 INFO L226 Difference]: Without dead ends: 9997 [2021-05-22 02:01:23,953 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:24,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9997 states. [2021-05-22 02:01:24,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9997 to 5187. [2021-05-22 02:01:24,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.74527574238334) internal successors, (24609), 5186 states have internal predecessors, (24609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:24,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24609 transitions. [2021-05-22 02:01:24,202 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24609 transitions. Word has length 29 [2021-05-22 02:01:24,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:24,202 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24609 transitions. [2021-05-22 02:01:24,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:24,202 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24609 transitions. [2021-05-22 02:01:24,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:24,211 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:24,211 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:24,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable493 [2021-05-22 02:01:24,211 INFO L430 AbstractCegarLoop]: === Iteration 495 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:24,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:24,211 INFO L82 PathProgramCache]: Analyzing trace with hash 2116137193, now seen corresponding path program 490 times [2021-05-22 02:01:24,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:24,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446006643] [2021-05-22 02:01:24,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:24,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:24,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:24,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446006643] [2021-05-22 02:01:24,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446006643] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:24,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:24,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:24,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184753718] [2021-05-22 02:01:24,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:24,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:24,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:24,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:24,336 INFO L87 Difference]: Start difference. First operand 5187 states and 24609 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:24,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:24,455 INFO L93 Difference]: Finished difference Result 10472 states and 46775 transitions. [2021-05-22 02:01:24,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:24,455 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:24,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:24,483 INFO L225 Difference]: With dead ends: 10472 [2021-05-22 02:01:24,484 INFO L226 Difference]: Without dead ends: 9949 [2021-05-22 02:01:24,484 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:24,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9949 states. [2021-05-22 02:01:24,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9949 to 5139. [2021-05-22 02:01:24,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.7506811989100814) internal successors, (24409), 5138 states have internal predecessors, (24409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:24,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24409 transitions. [2021-05-22 02:01:24,732 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24409 transitions. Word has length 29 [2021-05-22 02:01:24,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:24,732 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24409 transitions. [2021-05-22 02:01:24,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:24,733 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24409 transitions. [2021-05-22 02:01:24,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:24,742 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:24,742 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:24,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable494 [2021-05-22 02:01:24,742 INFO L430 AbstractCegarLoop]: === Iteration 496 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:24,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:24,742 INFO L82 PathProgramCache]: Analyzing trace with hash -2004903669, now seen corresponding path program 491 times [2021-05-22 02:01:24,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:24,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176651276] [2021-05-22 02:01:24,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:24,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:24,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:24,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176651276] [2021-05-22 02:01:24,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176651276] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:24,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:24,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:24,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407766350] [2021-05-22 02:01:24,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:24,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:24,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:24,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:24,857 INFO L87 Difference]: Start difference. First operand 5139 states and 24409 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:24,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:24,966 INFO L93 Difference]: Finished difference Result 10566 states and 47220 transitions. [2021-05-22 02:01:24,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:24,967 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:24,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:24,994 INFO L225 Difference]: With dead ends: 10566 [2021-05-22 02:01:24,994 INFO L226 Difference]: Without dead ends: 10089 [2021-05-22 02:01:24,994 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:25,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10089 states. [2021-05-22 02:01:25,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10089 to 5217. [2021-05-22 02:01:25,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 4.735812883435583) internal successors, (24702), 5216 states have internal predecessors, (24702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:25,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 24702 transitions. [2021-05-22 02:01:25,245 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 24702 transitions. Word has length 29 [2021-05-22 02:01:25,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:25,245 INFO L482 AbstractCegarLoop]: Abstraction has 5217 states and 24702 transitions. [2021-05-22 02:01:25,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:25,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 24702 transitions. [2021-05-22 02:01:25,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:25,254 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:25,255 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:25,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable495 [2021-05-22 02:01:25,255 INFO L430 AbstractCegarLoop]: === Iteration 497 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:25,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:25,255 INFO L82 PathProgramCache]: Analyzing trace with hash 897919081, now seen corresponding path program 492 times [2021-05-22 02:01:25,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:25,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792282021] [2021-05-22 02:01:25,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:25,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:25,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792282021] [2021-05-22 02:01:25,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792282021] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:25,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:25,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:25,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331137938] [2021-05-22 02:01:25,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:25,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:25,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:25,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:25,368 INFO L87 Difference]: Start difference. First operand 5217 states and 24702 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:25,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:25,489 INFO L93 Difference]: Finished difference Result 10564 states and 47137 transitions. [2021-05-22 02:01:25,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:25,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:25,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:25,516 INFO L225 Difference]: With dead ends: 10564 [2021-05-22 02:01:25,516 INFO L226 Difference]: Without dead ends: 9987 [2021-05-22 02:01:25,516 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:25,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9987 states. [2021-05-22 02:01:25,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9987 to 5115. [2021-05-22 02:01:25,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 4.756550645287446) internal successors, (24325), 5114 states have internal predecessors, (24325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 24325 transitions. [2021-05-22 02:01:25,753 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 24325 transitions. Word has length 29 [2021-05-22 02:01:25,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:25,753 INFO L482 AbstractCegarLoop]: Abstraction has 5115 states and 24325 transitions. [2021-05-22 02:01:25,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:25,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 24325 transitions. [2021-05-22 02:01:25,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:25,762 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:25,762 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:25,762 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable496 [2021-05-22 02:01:25,762 INFO L430 AbstractCegarLoop]: === Iteration 498 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:25,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:25,763 INFO L82 PathProgramCache]: Analyzing trace with hash -795784949, now seen corresponding path program 493 times [2021-05-22 02:01:25,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:25,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865622139] [2021-05-22 02:01:25,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:25,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:25,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:25,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865622139] [2021-05-22 02:01:25,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865622139] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:25,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:25,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:25,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570455656] [2021-05-22 02:01:25,877 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:25,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:25,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:25,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:25,877 INFO L87 Difference]: Start difference. First operand 5115 states and 24325 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:25,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:25,987 INFO L93 Difference]: Finished difference Result 10220 states and 45691 transitions. [2021-05-22 02:01:25,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:25,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:25,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:26,013 INFO L225 Difference]: With dead ends: 10220 [2021-05-22 02:01:26,014 INFO L226 Difference]: Without dead ends: 9805 [2021-05-22 02:01:26,014 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:26,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9805 states. [2021-05-22 02:01:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9805 to 5163. [2021-05-22 02:01:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 4.749515691592406) internal successors, (24517), 5162 states have internal predecessors, (24517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:26,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 24517 transitions. [2021-05-22 02:01:26,246 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 24517 transitions. Word has length 29 [2021-05-22 02:01:26,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:26,246 INFO L482 AbstractCegarLoop]: Abstraction has 5163 states and 24517 transitions. [2021-05-22 02:01:26,246 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:26,246 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 24517 transitions. [2021-05-22 02:01:26,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:26,255 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:26,255 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:26,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable497 [2021-05-22 02:01:26,255 INFO L430 AbstractCegarLoop]: === Iteration 499 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:26,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:26,255 INFO L82 PathProgramCache]: Analyzing trace with hash -384376953, now seen corresponding path program 494 times [2021-05-22 02:01:26,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:26,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934731451] [2021-05-22 02:01:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:26,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:26,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:26,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934731451] [2021-05-22 02:01:26,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934731451] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:26,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:26,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:26,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764244206] [2021-05-22 02:01:26,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:26,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:26,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:26,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:26,371 INFO L87 Difference]: Start difference. First operand 5163 states and 24517 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:26,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:26,470 INFO L93 Difference]: Finished difference Result 10220 states and 45659 transitions. [2021-05-22 02:01:26,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:26,470 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:26,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:26,496 INFO L225 Difference]: With dead ends: 10220 [2021-05-22 02:01:26,496 INFO L226 Difference]: Without dead ends: 9773 [2021-05-22 02:01:26,496 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:26,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9773 states. [2021-05-22 02:01:26,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9773 to 5131. [2021-05-22 02:01:26,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.754191033138402) internal successors, (24389), 5130 states have internal predecessors, (24389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:26,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24389 transitions. [2021-05-22 02:01:26,730 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24389 transitions. Word has length 29 [2021-05-22 02:01:26,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:26,730 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24389 transitions. [2021-05-22 02:01:26,730 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:26,730 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24389 transitions. [2021-05-22 02:01:26,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:26,739 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:26,739 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:26,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable498 [2021-05-22 02:01:26,739 INFO L430 AbstractCegarLoop]: === Iteration 500 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:26,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:26,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1476120809, now seen corresponding path program 495 times [2021-05-22 02:01:26,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:26,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549534340] [2021-05-22 02:01:26,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:26,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:26,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549534340] [2021-05-22 02:01:26,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549534340] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:26,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:26,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:26,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892700364] [2021-05-22 02:01:26,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:26,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:26,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:26,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:26,866 INFO L87 Difference]: Start difference. First operand 5131 states and 24389 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:27,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:27,033 INFO L93 Difference]: Finished difference Result 10296 states and 46019 transitions. [2021-05-22 02:01:27,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:27,033 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:27,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:27,061 INFO L225 Difference]: With dead ends: 10296 [2021-05-22 02:01:27,061 INFO L226 Difference]: Without dead ends: 9881 [2021-05-22 02:01:27,061 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:27,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9881 states. [2021-05-22 02:01:27,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9881 to 5179. [2021-05-22 02:01:27,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.744109694862882) internal successors, (24565), 5178 states have internal predecessors, (24565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:27,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24565 transitions. [2021-05-22 02:01:27,288 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24565 transitions. Word has length 29 [2021-05-22 02:01:27,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:27,288 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24565 transitions. [2021-05-22 02:01:27,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:27,288 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24565 transitions. [2021-05-22 02:01:27,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:27,296 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:27,296 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:27,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable499 [2021-05-22 02:01:27,297 INFO L430 AbstractCegarLoop]: === Iteration 501 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:27,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:27,297 INFO L82 PathProgramCache]: Analyzing trace with hash -469228341, now seen corresponding path program 496 times [2021-05-22 02:01:27,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:27,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909736371] [2021-05-22 02:01:27,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:27,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:27,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:27,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909736371] [2021-05-22 02:01:27,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909736371] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:27,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:27,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:27,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317451531] [2021-05-22 02:01:27,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:27,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:27,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:27,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:27,419 INFO L87 Difference]: Start difference. First operand 5179 states and 24565 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:27,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:27,541 INFO L93 Difference]: Finished difference Result 10356 states and 46235 transitions. [2021-05-22 02:01:27,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:27,541 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:27,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:27,566 INFO L225 Difference]: With dead ends: 10356 [2021-05-22 02:01:27,566 INFO L226 Difference]: Without dead ends: 9833 [2021-05-22 02:01:27,566 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:27,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9833 states. [2021-05-22 02:01:27,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9833 to 5131. [2021-05-22 02:01:27,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.751072124756336) internal successors, (24373), 5130 states have internal predecessors, (24373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:27,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24373 transitions. [2021-05-22 02:01:27,797 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24373 transitions. Word has length 29 [2021-05-22 02:01:27,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:27,797 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24373 transitions. [2021-05-22 02:01:27,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:27,797 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24373 transitions. [2021-05-22 02:01:27,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:27,806 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:27,806 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:27,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable500 [2021-05-22 02:01:27,806 INFO L430 AbstractCegarLoop]: === Iteration 502 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:27,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:27,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1741906085, now seen corresponding path program 497 times [2021-05-22 02:01:27,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:27,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939193456] [2021-05-22 02:01:27,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:27,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:27,928 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:27,928 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939193456] [2021-05-22 02:01:27,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939193456] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:27,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:27,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:27,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12283897] [2021-05-22 02:01:27,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:27,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:27,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:27,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:27,928 INFO L87 Difference]: Start difference. First operand 5131 states and 24373 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:28,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:28,023 INFO L93 Difference]: Finished difference Result 10296 states and 46003 transitions. [2021-05-22 02:01:28,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:28,023 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:28,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:28,049 INFO L225 Difference]: With dead ends: 10296 [2021-05-22 02:01:28,050 INFO L226 Difference]: Without dead ends: 9881 [2021-05-22 02:01:28,050 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:28,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9881 states. [2021-05-22 02:01:28,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9881 to 5179. [2021-05-22 02:01:28,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.741019698725377) internal successors, (24549), 5178 states have internal predecessors, (24549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:28,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24549 transitions. [2021-05-22 02:01:28,294 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24549 transitions. Word has length 29 [2021-05-22 02:01:28,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:28,294 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24549 transitions. [2021-05-22 02:01:28,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:28,295 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24549 transitions. [2021-05-22 02:01:28,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:28,303 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:28,303 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:28,303 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable501 [2021-05-22 02:01:28,303 INFO L430 AbstractCegarLoop]: === Iteration 503 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:28,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:28,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1471998585, now seen corresponding path program 498 times [2021-05-22 02:01:28,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:28,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839568382] [2021-05-22 02:01:28,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:28,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:28,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:28,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839568382] [2021-05-22 02:01:28,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839568382] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:28,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:28,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:28,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355300429] [2021-05-22 02:01:28,425 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:28,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:28,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:28,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:28,425 INFO L87 Difference]: Start difference. First operand 5179 states and 24549 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:28,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:28,529 INFO L93 Difference]: Finished difference Result 10356 states and 46219 transitions. [2021-05-22 02:01:28,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:28,529 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:28,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:28,554 INFO L225 Difference]: With dead ends: 10356 [2021-05-22 02:01:28,555 INFO L226 Difference]: Without dead ends: 9817 [2021-05-22 02:01:28,555 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:28,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9817 states. [2021-05-22 02:01:28,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9817 to 5115. [2021-05-22 02:01:28,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 4.754986312084474) internal successors, (24317), 5114 states have internal predecessors, (24317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:28,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 24317 transitions. [2021-05-22 02:01:28,792 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 24317 transitions. Word has length 29 [2021-05-22 02:01:28,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:28,792 INFO L482 AbstractCegarLoop]: Abstraction has 5115 states and 24317 transitions. [2021-05-22 02:01:28,792 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:28,792 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 24317 transitions. [2021-05-22 02:01:28,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:28,800 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:28,800 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:28,800 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable502 [2021-05-22 02:01:28,801 INFO L430 AbstractCegarLoop]: === Iteration 504 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:28,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:28,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1600302373, now seen corresponding path program 499 times [2021-05-22 02:01:28,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:28,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228463265] [2021-05-22 02:01:28,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:28,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:28,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:28,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228463265] [2021-05-22 02:01:28,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228463265] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:28,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:28,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:28,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471029665] [2021-05-22 02:01:28,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:28,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:28,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:28,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:28,927 INFO L87 Difference]: Start difference. First operand 5115 states and 24317 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:29,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:29,033 INFO L93 Difference]: Finished difference Result 10476 states and 46841 transitions. [2021-05-22 02:01:29,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:29,033 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:29,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:29,058 INFO L225 Difference]: With dead ends: 10476 [2021-05-22 02:01:29,058 INFO L226 Difference]: Without dead ends: 9999 [2021-05-22 02:01:29,059 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:29,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9999 states. [2021-05-22 02:01:29,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9999 to 5187. [2021-05-22 02:01:29,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.746818357115311) internal successors, (24617), 5186 states have internal predecessors, (24617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:29,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24617 transitions. [2021-05-22 02:01:29,283 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24617 transitions. Word has length 29 [2021-05-22 02:01:29,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:29,283 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24617 transitions. [2021-05-22 02:01:29,283 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:29,283 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24617 transitions. [2021-05-22 02:01:29,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:29,291 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:29,291 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:29,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable503 [2021-05-22 02:01:29,291 INFO L430 AbstractCegarLoop]: === Iteration 505 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:29,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:29,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1613602297, now seen corresponding path program 500 times [2021-05-22 02:01:29,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:29,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277631532] [2021-05-22 02:01:29,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:29,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:29,408 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:29,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277631532] [2021-05-22 02:01:29,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277631532] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:29,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:29,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:29,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020138868] [2021-05-22 02:01:29,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:29,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:29,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:29,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:29,408 INFO L87 Difference]: Start difference. First operand 5187 states and 24617 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:29,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:29,493 INFO L93 Difference]: Finished difference Result 10414 states and 46524 transitions. [2021-05-22 02:01:29,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:29,494 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:29,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:29,519 INFO L225 Difference]: With dead ends: 10414 [2021-05-22 02:01:29,519 INFO L226 Difference]: Without dead ends: 9951 [2021-05-22 02:01:29,519 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:29,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9951 states. [2021-05-22 02:01:29,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9951 to 5139. [2021-05-22 02:01:29,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.752238224990268) internal successors, (24417), 5138 states have internal predecessors, (24417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:29,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24417 transitions. [2021-05-22 02:01:29,745 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24417 transitions. Word has length 29 [2021-05-22 02:01:29,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:29,745 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24417 transitions. [2021-05-22 02:01:29,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24417 transitions. [2021-05-22 02:01:29,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:29,754 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:29,754 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:29,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable504 [2021-05-22 02:01:29,754 INFO L430 AbstractCegarLoop]: === Iteration 506 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:29,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:29,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1119400327, now seen corresponding path program 501 times [2021-05-22 02:01:29,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:29,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521048548] [2021-05-22 02:01:29,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:29,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:29,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521048548] [2021-05-22 02:01:29,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521048548] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:29,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:29,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:29,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631541945] [2021-05-22 02:01:29,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:29,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:29,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:29,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:29,863 INFO L87 Difference]: Start difference. First operand 5139 states and 24417 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:29,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:29,967 INFO L93 Difference]: Finished difference Result 10566 states and 47228 transitions. [2021-05-22 02:01:29,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:29,967 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:29,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:29,993 INFO L225 Difference]: With dead ends: 10566 [2021-05-22 02:01:29,994 INFO L226 Difference]: Without dead ends: 10089 [2021-05-22 02:01:29,994 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:30,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10089 states. [2021-05-22 02:01:30,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10089 to 5217. [2021-05-22 02:01:30,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 4.737346625766871) internal successors, (24710), 5216 states have internal predecessors, (24710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:30,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 24710 transitions. [2021-05-22 02:01:30,222 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 24710 transitions. Word has length 29 [2021-05-22 02:01:30,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:30,222 INFO L482 AbstractCegarLoop]: Abstraction has 5217 states and 24710 transitions. [2021-05-22 02:01:30,222 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:30,222 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 24710 transitions. [2021-05-22 02:01:30,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:30,230 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:30,230 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:30,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable505 [2021-05-22 02:01:30,230 INFO L430 AbstractCegarLoop]: === Iteration 507 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:30,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:30,231 INFO L82 PathProgramCache]: Analyzing trace with hash -568845945, now seen corresponding path program 502 times [2021-05-22 02:01:30,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:30,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944603721] [2021-05-22 02:01:30,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:30,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:30,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944603721] [2021-05-22 02:01:30,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944603721] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:30,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:30,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:30,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870827316] [2021-05-22 02:01:30,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:30,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:30,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:30,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:30,342 INFO L87 Difference]: Start difference. First operand 5217 states and 24710 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:30,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:30,456 INFO L93 Difference]: Finished difference Result 10564 states and 47145 transitions. [2021-05-22 02:01:30,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:30,456 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:30,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:30,482 INFO L225 Difference]: With dead ends: 10564 [2021-05-22 02:01:30,482 INFO L226 Difference]: Without dead ends: 10011 [2021-05-22 02:01:30,482 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:30,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10011 states. [2021-05-22 02:01:30,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10011 to 5139. [2021-05-22 02:01:30,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.7475671467497085) internal successors, (24393), 5138 states have internal predecessors, (24393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:30,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24393 transitions. [2021-05-22 02:01:30,711 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24393 transitions. Word has length 29 [2021-05-22 02:01:30,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:30,711 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24393 transitions. [2021-05-22 02:01:30,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:30,711 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24393 transitions. [2021-05-22 02:01:30,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:30,721 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:30,721 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:30,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable506 [2021-05-22 02:01:30,721 INFO L430 AbstractCegarLoop]: === Iteration 508 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:30,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:30,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1507405289, now seen corresponding path program 503 times [2021-05-22 02:01:30,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:30,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992768554] [2021-05-22 02:01:30,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:30,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:30,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:30,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992768554] [2021-05-22 02:01:30,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992768554] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:30,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:30,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:30,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894152479] [2021-05-22 02:01:30,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:30,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:30,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:30,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:30,840 INFO L87 Difference]: Start difference. First operand 5139 states and 24393 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:30,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:30,927 INFO L93 Difference]: Finished difference Result 10412 states and 46519 transitions. [2021-05-22 02:01:30,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:30,928 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:30,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:30,953 INFO L225 Difference]: With dead ends: 10412 [2021-05-22 02:01:30,953 INFO L226 Difference]: Without dead ends: 9997 [2021-05-22 02:01:30,953 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:31,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9997 states. [2021-05-22 02:01:31,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9997 to 5187. [2021-05-22 02:01:31,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.737562668723486) internal successors, (24569), 5186 states have internal predecessors, (24569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:31,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24569 transitions. [2021-05-22 02:01:31,180 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24569 transitions. Word has length 29 [2021-05-22 02:01:31,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:31,180 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24569 transitions. [2021-05-22 02:01:31,180 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:31,180 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24569 transitions. [2021-05-22 02:01:31,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:31,189 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:31,189 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:31,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable507 [2021-05-22 02:01:31,189 INFO L430 AbstractCegarLoop]: === Iteration 509 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:31,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:31,189 INFO L82 PathProgramCache]: Analyzing trace with hash 660608327, now seen corresponding path program 504 times [2021-05-22 02:01:31,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:31,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121466292] [2021-05-22 02:01:31,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:31,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:31,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:31,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121466292] [2021-05-22 02:01:31,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121466292] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:31,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:31,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:31,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899649101] [2021-05-22 02:01:31,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:31,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:31,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:31,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:31,318 INFO L87 Difference]: Start difference. First operand 5187 states and 24569 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:31,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:31,431 INFO L93 Difference]: Finished difference Result 10472 states and 46735 transitions. [2021-05-22 02:01:31,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:31,431 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:31,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:31,459 INFO L225 Difference]: With dead ends: 10472 [2021-05-22 02:01:31,459 INFO L226 Difference]: Without dead ends: 9917 [2021-05-22 02:01:31,459 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:31,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9917 states. [2021-05-22 02:01:31,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9917 to 5107. [2021-05-22 02:01:31,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5107 states, 5106 states have (on average 4.7577359968664314) internal successors, (24293), 5106 states have internal predecessors, (24293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:31,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 24293 transitions. [2021-05-22 02:01:31,691 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 24293 transitions. Word has length 29 [2021-05-22 02:01:31,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:31,691 INFO L482 AbstractCegarLoop]: Abstraction has 5107 states and 24293 transitions. [2021-05-22 02:01:31,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:31,691 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 24293 transitions. [2021-05-22 02:01:31,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:31,700 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:31,700 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:31,700 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable508 [2021-05-22 02:01:31,700 INFO L430 AbstractCegarLoop]: === Iteration 510 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:31,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:31,701 INFO L82 PathProgramCache]: Analyzing trace with hash 533785769, now seen corresponding path program 505 times [2021-05-22 02:01:31,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:31,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797932197] [2021-05-22 02:01:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:31,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:31,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797932197] [2021-05-22 02:01:31,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797932197] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:31,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:31,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:31,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575118168] [2021-05-22 02:01:31,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:31,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:31,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:31,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:31,818 INFO L87 Difference]: Start difference. First operand 5107 states and 24293 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:31,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:31,922 INFO L93 Difference]: Finished difference Result 10294 states and 46038 transitions. [2021-05-22 02:01:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:31,923 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:31,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:31,948 INFO L225 Difference]: With dead ends: 10294 [2021-05-22 02:01:31,948 INFO L226 Difference]: Without dead ends: 9879 [2021-05-22 02:01:31,948 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:32,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9879 states. [2021-05-22 02:01:32,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9879 to 5179. [2021-05-22 02:01:32,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.749517188103515) internal successors, (24593), 5178 states have internal predecessors, (24593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:32,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24593 transitions. [2021-05-22 02:01:32,173 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24593 transitions. Word has length 29 [2021-05-22 02:01:32,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:32,173 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24593 transitions. [2021-05-22 02:01:32,173 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:32,173 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24593 transitions. [2021-05-22 02:01:32,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:32,182 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:32,182 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:32,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable509 [2021-05-22 02:01:32,182 INFO L430 AbstractCegarLoop]: === Iteration 511 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:32,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:32,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1250448715, now seen corresponding path program 506 times [2021-05-22 02:01:32,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:32,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089997231] [2021-05-22 02:01:32,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:32,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:32,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:32,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089997231] [2021-05-22 02:01:32,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089997231] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:32,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:32,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:32,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694997226] [2021-05-22 02:01:32,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:32,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:32,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:32,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:32,302 INFO L87 Difference]: Start difference. First operand 5179 states and 24593 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:32,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:32,417 INFO L93 Difference]: Finished difference Result 10356 states and 46259 transitions. [2021-05-22 02:01:32,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:32,417 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:32,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:32,442 INFO L225 Difference]: With dead ends: 10356 [2021-05-22 02:01:32,442 INFO L226 Difference]: Without dead ends: 9831 [2021-05-22 02:01:32,442 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:32,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9831 states. [2021-05-22 02:01:32,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9831 to 5131. [2021-05-22 02:01:32,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.756530214424951) internal successors, (24401), 5130 states have internal predecessors, (24401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:32,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24401 transitions. [2021-05-22 02:01:32,666 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24401 transitions. Word has length 29 [2021-05-22 02:01:32,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:32,666 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24401 transitions. [2021-05-22 02:01:32,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:32,667 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24401 transitions. [2021-05-22 02:01:32,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:32,675 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:32,675 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:32,675 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable510 [2021-05-22 02:01:32,675 INFO L430 AbstractCegarLoop]: === Iteration 512 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:32,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:32,676 INFO L82 PathProgramCache]: Analyzing trace with hash 52883723, now seen corresponding path program 507 times [2021-05-22 02:01:32,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:32,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796441835] [2021-05-22 02:01:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:32,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:32,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796441835] [2021-05-22 02:01:32,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796441835] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:32,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:32,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:32,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488843935] [2021-05-22 02:01:32,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:32,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:32,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:32,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:32,784 INFO L87 Difference]: Start difference. First operand 5131 states and 24401 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:32,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:32,897 INFO L93 Difference]: Finished difference Result 10216 states and 45673 transitions. [2021-05-22 02:01:32,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:32,897 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:32,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:32,924 INFO L225 Difference]: With dead ends: 10216 [2021-05-22 02:01:32,924 INFO L226 Difference]: Without dead ends: 9801 [2021-05-22 02:01:32,924 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:33,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9801 states. [2021-05-22 02:01:33,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9801 to 5163. [2021-05-22 02:01:33,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 4.748740798140256) internal successors, (24513), 5162 states have internal predecessors, (24513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 24513 transitions. [2021-05-22 02:01:33,172 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 24513 transitions. Word has length 29 [2021-05-22 02:01:33,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:33,172 INFO L482 AbstractCegarLoop]: Abstraction has 5163 states and 24513 transitions. [2021-05-22 02:01:33,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:33,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 24513 transitions. [2021-05-22 02:01:33,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:33,182 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:33,182 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:33,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable511 [2021-05-22 02:01:33,182 INFO L430 AbstractCegarLoop]: === Iteration 513 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:33,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:33,182 INFO L82 PathProgramCache]: Analyzing trace with hash 464291719, now seen corresponding path program 508 times [2021-05-22 02:01:33,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:33,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533514254] [2021-05-22 02:01:33,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:33,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:33,289 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:33,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533514254] [2021-05-22 02:01:33,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533514254] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:33,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:33,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:33,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063715012] [2021-05-22 02:01:33,290 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:33,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:33,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:33,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:33,290 INFO L87 Difference]: Start difference. First operand 5163 states and 24513 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:33,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:33,398 INFO L93 Difference]: Finished difference Result 10216 states and 45641 transitions. [2021-05-22 02:01:33,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:33,399 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:33,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:33,424 INFO L225 Difference]: With dead ends: 10216 [2021-05-22 02:01:33,424 INFO L226 Difference]: Without dead ends: 9769 [2021-05-22 02:01:33,425 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:33,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9769 states. [2021-05-22 02:01:33,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9769 to 5131. [2021-05-22 02:01:33,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.753411306042885) internal successors, (24385), 5130 states have internal predecessors, (24385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:33,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24385 transitions. [2021-05-22 02:01:33,656 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24385 transitions. Word has length 29 [2021-05-22 02:01:33,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:33,656 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24385 transitions. [2021-05-22 02:01:33,656 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:33,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24385 transitions. [2021-05-22 02:01:33,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:33,665 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:33,665 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:33,665 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable512 [2021-05-22 02:01:33,665 INFO L430 AbstractCegarLoop]: === Iteration 514 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:33,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:33,665 INFO L82 PathProgramCache]: Analyzing trace with hash 599987207, now seen corresponding path program 509 times [2021-05-22 02:01:33,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:33,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694201039] [2021-05-22 02:01:33,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:33,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:33,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694201039] [2021-05-22 02:01:33,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694201039] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:33,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:33,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:33,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469766646] [2021-05-22 02:01:33,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:33,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:33,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:33,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:33,777 INFO L87 Difference]: Start difference. First operand 5131 states and 24385 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:33,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:33,892 INFO L93 Difference]: Finished difference Result 10356 states and 46275 transitions. [2021-05-22 02:01:33,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:33,892 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:33,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:33,919 INFO L225 Difference]: With dead ends: 10356 [2021-05-22 02:01:33,920 INFO L226 Difference]: Without dead ends: 9879 [2021-05-22 02:01:33,920 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:34,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9879 states. [2021-05-22 02:01:34,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9879 to 5179. [2021-05-22 02:01:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.743337195828505) internal successors, (24561), 5178 states have internal predecessors, (24561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24561 transitions. [2021-05-22 02:01:34,150 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24561 transitions. Word has length 29 [2021-05-22 02:01:34,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:34,150 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24561 transitions. [2021-05-22 02:01:34,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:34,150 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24561 transitions. [2021-05-22 02:01:34,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:34,159 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:34,159 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:34,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable513 [2021-05-22 02:01:34,159 INFO L430 AbstractCegarLoop]: === Iteration 515 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:34,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:34,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1681049833, now seen corresponding path program 510 times [2021-05-22 02:01:34,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:34,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529704058] [2021-05-22 02:01:34,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:34,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:34,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529704058] [2021-05-22 02:01:34,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529704058] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:34,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:34,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:34,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862912136] [2021-05-22 02:01:34,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:34,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:34,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:34,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:34,274 INFO L87 Difference]: Start difference. First operand 5179 states and 24561 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:34,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:34,368 INFO L93 Difference]: Finished difference Result 10294 states and 45958 transitions. [2021-05-22 02:01:34,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:34,368 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:34,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:34,394 INFO L225 Difference]: With dead ends: 10294 [2021-05-22 02:01:34,394 INFO L226 Difference]: Without dead ends: 9815 [2021-05-22 02:01:34,394 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:34,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9815 states. [2021-05-22 02:01:34,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9815 to 5115. [2021-05-22 02:01:34,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 4.757332811888932) internal successors, (24329), 5114 states have internal predecessors, (24329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:34,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 24329 transitions. [2021-05-22 02:01:34,624 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 24329 transitions. Word has length 29 [2021-05-22 02:01:34,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:34,624 INFO L482 AbstractCegarLoop]: Abstraction has 5115 states and 24329 transitions. [2021-05-22 02:01:34,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:34,624 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 24329 transitions. [2021-05-22 02:01:34,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:34,632 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:34,632 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:34,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable514 [2021-05-22 02:01:34,632 INFO L430 AbstractCegarLoop]: === Iteration 516 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:34,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:34,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1388555095, now seen corresponding path program 511 times [2021-05-22 02:01:34,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:34,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891981203] [2021-05-22 02:01:34,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:34,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:34,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891981203] [2021-05-22 02:01:34,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891981203] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:34,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:34,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:34,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599034789] [2021-05-22 02:01:34,738 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:34,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:34,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:34,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:34,738 INFO L87 Difference]: Start difference. First operand 5115 states and 24329 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:34,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:34,847 INFO L93 Difference]: Finished difference Result 10402 states and 46546 transitions. [2021-05-22 02:01:34,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:34,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:34,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:34,872 INFO L225 Difference]: With dead ends: 10402 [2021-05-22 02:01:34,873 INFO L226 Difference]: Without dead ends: 9987 [2021-05-22 02:01:34,873 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:34,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9987 states. [2021-05-22 02:01:35,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9987 to 5187. [2021-05-22 02:01:35,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.749132279213266) internal successors, (24629), 5186 states have internal predecessors, (24629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:35,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24629 transitions. [2021-05-22 02:01:35,103 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24629 transitions. Word has length 29 [2021-05-22 02:01:35,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:35,103 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24629 transitions. [2021-05-22 02:01:35,103 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:35,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24629 transitions. [2021-05-22 02:01:35,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:35,112 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:35,112 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:35,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable515 [2021-05-22 02:01:35,112 INFO L430 AbstractCegarLoop]: === Iteration 517 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:35,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:35,112 INFO L82 PathProgramCache]: Analyzing trace with hash -671892149, now seen corresponding path program 512 times [2021-05-22 02:01:35,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:35,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890208083] [2021-05-22 02:01:35,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:35,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:35,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:35,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890208083] [2021-05-22 02:01:35,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890208083] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:35,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:35,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:35,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377711202] [2021-05-22 02:01:35,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:35,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:35,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:35,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:35,218 INFO L87 Difference]: Start difference. First operand 5187 states and 24629 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:35,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:35,322 INFO L93 Difference]: Finished difference Result 10464 states and 46767 transitions. [2021-05-22 02:01:35,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:35,322 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:35,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:35,348 INFO L225 Difference]: With dead ends: 10464 [2021-05-22 02:01:35,349 INFO L226 Difference]: Without dead ends: 9939 [2021-05-22 02:01:35,349 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:35,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9939 states. [2021-05-22 02:01:35,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9939 to 5139. [2021-05-22 02:01:35,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.754573764110549) internal successors, (24429), 5138 states have internal predecessors, (24429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:35,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24429 transitions. [2021-05-22 02:01:35,597 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24429 transitions. Word has length 29 [2021-05-22 02:01:35,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:35,597 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24429 transitions. [2021-05-22 02:01:35,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:35,598 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24429 transitions. [2021-05-22 02:01:35,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:35,606 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:35,606 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:35,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable516 [2021-05-22 02:01:35,606 INFO L430 AbstractCegarLoop]: === Iteration 518 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:35,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:35,606 INFO L82 PathProgramCache]: Analyzing trace with hash -998593367, now seen corresponding path program 513 times [2021-05-22 02:01:35,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:35,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672110673] [2021-05-22 02:01:35,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:35,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:35,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:35,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672110673] [2021-05-22 02:01:35,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672110673] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:35,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:35,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:35,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903042587] [2021-05-22 02:01:35,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:35,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:35,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:35,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:35,701 INFO L87 Difference]: Start difference. First operand 5139 states and 24429 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:35,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:35,805 INFO L93 Difference]: Finished difference Result 10396 states and 46505 transitions. [2021-05-22 02:01:35,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:35,805 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:35,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:35,830 INFO L225 Difference]: With dead ends: 10396 [2021-05-22 02:01:35,830 INFO L226 Difference]: Without dead ends: 9981 [2021-05-22 02:01:35,830 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:35,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9981 states. [2021-05-22 02:01:36,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9981 to 5187. [2021-05-22 02:01:36,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.744504435017355) internal successors, (24605), 5186 states have internal predecessors, (24605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:36,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24605 transitions. [2021-05-22 02:01:36,062 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24605 transitions. Word has length 29 [2021-05-22 02:01:36,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:36,062 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24605 transitions. [2021-05-22 02:01:36,062 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:36,062 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24605 transitions. [2021-05-22 02:01:36,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:36,071 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:36,071 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:36,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable517 [2021-05-22 02:01:36,071 INFO L430 AbstractCegarLoop]: === Iteration 519 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:36,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:36,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1853982615, now seen corresponding path program 514 times [2021-05-22 02:01:36,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:36,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097629291] [2021-05-22 02:01:36,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:36,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:36,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097629291] [2021-05-22 02:01:36,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097629291] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:36,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:36,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:36,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162760301] [2021-05-22 02:01:36,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:36,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:36,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:36,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:36,165 INFO L87 Difference]: Start difference. First operand 5187 states and 24605 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:36,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:36,279 INFO L93 Difference]: Finished difference Result 10452 states and 46709 transitions. [2021-05-22 02:01:36,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:36,280 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:36,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:36,306 INFO L225 Difference]: With dead ends: 10452 [2021-05-22 02:01:36,306 INFO L226 Difference]: Without dead ends: 9933 [2021-05-22 02:01:36,306 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:36,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9933 states. [2021-05-22 02:01:36,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9933 to 5139. [2021-05-22 02:01:36,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.749902685869988) internal successors, (24405), 5138 states have internal predecessors, (24405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:36,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24405 transitions. [2021-05-22 02:01:36,535 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24405 transitions. Word has length 29 [2021-05-22 02:01:36,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:36,536 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24405 transitions. [2021-05-22 02:01:36,536 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:36,536 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24405 transitions. [2021-05-22 02:01:36,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:36,544 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:36,544 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:36,544 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable518 [2021-05-22 02:01:36,544 INFO L430 AbstractCegarLoop]: === Iteration 520 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:36,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:36,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1942712459, now seen corresponding path program 515 times [2021-05-22 02:01:36,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:36,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230279968] [2021-05-22 02:01:36,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:36,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:36,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:36,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230279968] [2021-05-22 02:01:36,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230279968] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:36,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:36,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:36,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333262493] [2021-05-22 02:01:36,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:36,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:36,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:36,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:36,640 INFO L87 Difference]: Start difference. First operand 5139 states and 24405 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:36,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:36,747 INFO L93 Difference]: Finished difference Result 10548 states and 47159 transitions. [2021-05-22 02:01:36,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:36,748 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:36,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:36,774 INFO L225 Difference]: With dead ends: 10548 [2021-05-22 02:01:36,774 INFO L226 Difference]: Without dead ends: 10071 [2021-05-22 02:01:36,774 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:36,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10071 states. [2021-05-22 02:01:36,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10071 to 5215. [2021-05-22 02:01:36,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5214 states have (on average 4.73590333716916) internal successors, (24693), 5214 states have internal predecessors, (24693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 24693 transitions. [2021-05-22 02:01:37,004 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 24693 transitions. Word has length 29 [2021-05-22 02:01:37,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:37,004 INFO L482 AbstractCegarLoop]: Abstraction has 5215 states and 24693 transitions. [2021-05-22 02:01:37,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:37,004 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 24693 transitions. [2021-05-22 02:01:37,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:37,013 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:37,013 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:37,013 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable519 [2021-05-22 02:01:37,013 INFO L430 AbstractCegarLoop]: === Iteration 521 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:37,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:37,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1201760361, now seen corresponding path program 516 times [2021-05-22 02:01:37,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:37,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633740550] [2021-05-22 02:01:37,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:37,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:37,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633740550] [2021-05-22 02:01:37,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633740550] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:37,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:37,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:37,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812141929] [2021-05-22 02:01:37,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:37,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:37,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:37,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:37,110 INFO L87 Difference]: Start difference. First operand 5215 states and 24693 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:37,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:37,220 INFO L93 Difference]: Finished difference Result 10542 states and 47066 transitions. [2021-05-22 02:01:37,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:37,221 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:37,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:37,246 INFO L225 Difference]: With dead ends: 10542 [2021-05-22 02:01:37,247 INFO L226 Difference]: Without dead ends: 9971 [2021-05-22 02:01:37,247 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:37,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9971 states. [2021-05-22 02:01:37,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9971 to 5115. [2021-05-22 02:01:37,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 4.75576847868596) internal successors, (24321), 5114 states have internal predecessors, (24321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:37,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 24321 transitions. [2021-05-22 02:01:37,515 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 24321 transitions. Word has length 29 [2021-05-22 02:01:37,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:37,515 INFO L482 AbstractCegarLoop]: Abstraction has 5115 states and 24321 transitions. [2021-05-22 02:01:37,515 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:37,515 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 24321 transitions. [2021-05-22 02:01:37,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:37,524 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:37,524 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:37,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable520 [2021-05-22 02:01:37,524 INFO L430 AbstractCegarLoop]: === Iteration 522 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:37,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:37,524 INFO L82 PathProgramCache]: Analyzing trace with hash 2117025931, now seen corresponding path program 517 times [2021-05-22 02:01:37,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:37,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112714] [2021-05-22 02:01:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:37,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:37,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:37,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112714] [2021-05-22 02:01:37,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112714] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:37,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:37,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:37,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107074215] [2021-05-22 02:01:37,621 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:37,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:37,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:37,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:37,622 INFO L87 Difference]: Start difference. First operand 5115 states and 24321 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:37,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:37,732 INFO L93 Difference]: Finished difference Result 10210 states and 45656 transitions. [2021-05-22 02:01:37,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:37,732 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:37,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:37,758 INFO L225 Difference]: With dead ends: 10210 [2021-05-22 02:01:37,759 INFO L226 Difference]: Without dead ends: 9795 [2021-05-22 02:01:37,759 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:37,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9795 states. [2021-05-22 02:01:37,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9795 to 5163. [2021-05-22 02:01:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 4.748740798140256) internal successors, (24513), 5162 states have internal predecessors, (24513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:37,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 24513 transitions. [2021-05-22 02:01:37,985 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 24513 transitions. Word has length 29 [2021-05-22 02:01:37,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:37,986 INFO L482 AbstractCegarLoop]: Abstraction has 5163 states and 24513 transitions. [2021-05-22 02:01:37,986 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:37,986 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 24513 transitions. [2021-05-22 02:01:37,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:37,994 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:37,994 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:37,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable521 [2021-05-22 02:01:37,994 INFO L430 AbstractCegarLoop]: === Iteration 523 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:37,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:37,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1766533369, now seen corresponding path program 518 times [2021-05-22 02:01:37,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:37,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928894766] [2021-05-22 02:01:37,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:38,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:38,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:38,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928894766] [2021-05-22 02:01:38,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928894766] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:38,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:38,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:38,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144833337] [2021-05-22 02:01:38,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:38,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:38,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:38,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:38,090 INFO L87 Difference]: Start difference. First operand 5163 states and 24513 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:38,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:38,179 INFO L93 Difference]: Finished difference Result 10210 states and 45624 transitions. [2021-05-22 02:01:38,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:38,180 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:38,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:38,205 INFO L225 Difference]: With dead ends: 10210 [2021-05-22 02:01:38,205 INFO L226 Difference]: Without dead ends: 9763 [2021-05-22 02:01:38,205 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 100.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:38,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9763 states. [2021-05-22 02:01:38,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9763 to 5131. [2021-05-22 02:01:38,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.753411306042885) internal successors, (24385), 5130 states have internal predecessors, (24385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:38,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24385 transitions. [2021-05-22 02:01:38,434 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24385 transitions. Word has length 29 [2021-05-22 02:01:38,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:38,434 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24385 transitions. [2021-05-22 02:01:38,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:38,434 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24385 transitions. [2021-05-22 02:01:38,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:38,443 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:38,443 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:38,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable522 [2021-05-22 02:01:38,443 INFO L430 AbstractCegarLoop]: === Iteration 524 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:38,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:38,443 INFO L82 PathProgramCache]: Analyzing trace with hash 84013289, now seen corresponding path program 519 times [2021-05-22 02:01:38,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:38,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160386143] [2021-05-22 02:01:38,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:38,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:38,536 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:38,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160386143] [2021-05-22 02:01:38,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160386143] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:38,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:38,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:38,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444506538] [2021-05-22 02:01:38,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:38,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:38,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:38,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:38,537 INFO L87 Difference]: Start difference. First operand 5131 states and 24385 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:38,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:38,648 INFO L93 Difference]: Finished difference Result 10282 states and 45972 transitions. [2021-05-22 02:01:38,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:38,648 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:38,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:38,674 INFO L225 Difference]: With dead ends: 10282 [2021-05-22 02:01:38,674 INFO L226 Difference]: Without dead ends: 9867 [2021-05-22 02:01:38,674 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:38,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9867 states. [2021-05-22 02:01:38,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9867 to 5179. [2021-05-22 02:01:38,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.743337195828505) internal successors, (24561), 5178 states have internal predecessors, (24561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:38,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24561 transitions. [2021-05-22 02:01:38,905 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24561 transitions. Word has length 29 [2021-05-22 02:01:38,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:38,905 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24561 transitions. [2021-05-22 02:01:38,905 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:38,905 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24561 transitions. [2021-05-22 02:01:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:38,914 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:38,914 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:38,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable523 [2021-05-22 02:01:38,914 INFO L430 AbstractCegarLoop]: === Iteration 525 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:38,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:38,914 INFO L82 PathProgramCache]: Analyzing trace with hash -144380853, now seen corresponding path program 520 times [2021-05-22 02:01:38,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:38,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3924183] [2021-05-22 02:01:38,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:39,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:39,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:39,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3924183] [2021-05-22 02:01:39,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3924183] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:39,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:39,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:39,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031558465] [2021-05-22 02:01:39,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:39,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:39,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:39,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:39,008 INFO L87 Difference]: Start difference. First operand 5179 states and 24561 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:39,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:39,117 INFO L93 Difference]: Finished difference Result 10338 states and 46176 transitions. [2021-05-22 02:01:39,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:39,117 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:39,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:39,144 INFO L225 Difference]: With dead ends: 10338 [2021-05-22 02:01:39,144 INFO L226 Difference]: Without dead ends: 9819 [2021-05-22 02:01:39,144 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:39,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9819 states. [2021-05-22 02:01:39,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9819 to 5131. [2021-05-22 02:01:39,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.750292397660819) internal successors, (24369), 5130 states have internal predecessors, (24369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:39,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24369 transitions. [2021-05-22 02:01:39,375 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24369 transitions. Word has length 29 [2021-05-22 02:01:39,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:39,375 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24369 transitions. [2021-05-22 02:01:39,375 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:39,375 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24369 transitions. [2021-05-22 02:01:39,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:39,383 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:39,384 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:39,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable524 [2021-05-22 02:01:39,384 INFO L430 AbstractCegarLoop]: === Iteration 526 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:39,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:39,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1612541787, now seen corresponding path program 521 times [2021-05-22 02:01:39,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:39,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914116625] [2021-05-22 02:01:39,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:39,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:39,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:39,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:39,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914116625] [2021-05-22 02:01:39,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914116625] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:39,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:39,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:39,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426610172] [2021-05-22 02:01:39,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:39,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:39,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:39,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:39,490 INFO L87 Difference]: Start difference. First operand 5131 states and 24369 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:39,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:39,586 INFO L93 Difference]: Finished difference Result 10282 states and 45956 transitions. [2021-05-22 02:01:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:39,586 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:39,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:39,613 INFO L225 Difference]: With dead ends: 10282 [2021-05-22 02:01:39,613 INFO L226 Difference]: Without dead ends: 9867 [2021-05-22 02:01:39,613 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:39,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9867 states. [2021-05-22 02:01:39,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9867 to 5179. [2021-05-22 02:01:39,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.740247199691001) internal successors, (24545), 5178 states have internal predecessors, (24545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:39,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24545 transitions. [2021-05-22 02:01:39,844 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24545 transitions. Word has length 29 [2021-05-22 02:01:39,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:39,844 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24545 transitions. [2021-05-22 02:01:39,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:39,844 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24545 transitions. [2021-05-22 02:01:39,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:39,853 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:39,853 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:39,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable525 [2021-05-22 02:01:39,853 INFO L430 AbstractCegarLoop]: === Iteration 527 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:39,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:39,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1819349753, now seen corresponding path program 522 times [2021-05-22 02:01:39,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:39,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659349898] [2021-05-22 02:01:39,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:39,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:39,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659349898] [2021-05-22 02:01:39,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659349898] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:39,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:39,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:39,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061839879] [2021-05-22 02:01:39,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:39,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:39,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:39,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:39,982 INFO L87 Difference]: Start difference. First operand 5179 states and 24545 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:40,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:40,146 INFO L93 Difference]: Finished difference Result 10338 states and 46160 transitions. [2021-05-22 02:01:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:40,146 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:40,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:40,177 INFO L225 Difference]: With dead ends: 10338 [2021-05-22 02:01:40,177 INFO L226 Difference]: Without dead ends: 9803 [2021-05-22 02:01:40,177 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 157.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:40,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9803 states. [2021-05-22 02:01:40,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9803 to 5115. [2021-05-22 02:01:40,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 4.754204145482988) internal successors, (24313), 5114 states have internal predecessors, (24313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:40,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 24313 transitions. [2021-05-22 02:01:40,424 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 24313 transitions. Word has length 29 [2021-05-22 02:01:40,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:40,424 INFO L482 AbstractCegarLoop]: Abstraction has 5115 states and 24313 transitions. [2021-05-22 02:01:40,424 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:40,424 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 24313 transitions. [2021-05-22 02:01:40,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:40,432 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:40,432 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:40,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable526 [2021-05-22 02:01:40,433 INFO L430 AbstractCegarLoop]: === Iteration 528 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:40,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:40,433 INFO L82 PathProgramCache]: Analyzing trace with hash 208194853, now seen corresponding path program 523 times [2021-05-22 02:01:40,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:40,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685813661] [2021-05-22 02:01:40,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:40,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:40,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:40,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685813661] [2021-05-22 02:01:40,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685813661] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:40,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:40,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:40,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863347486] [2021-05-22 02:01:40,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:40,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:40,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:40,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:40,542 INFO L87 Difference]: Start difference. First operand 5115 states and 24313 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:40,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:40,648 INFO L93 Difference]: Finished difference Result 10464 states and 46799 transitions. [2021-05-22 02:01:40,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:40,648 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:40,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:40,673 INFO L225 Difference]: With dead ends: 10464 [2021-05-22 02:01:40,673 INFO L226 Difference]: Without dead ends: 9987 [2021-05-22 02:01:40,674 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:40,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9987 states. [2021-05-22 02:01:40,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9987 to 5187. [2021-05-22 02:01:40,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.7460470497493255) internal successors, (24613), 5186 states have internal predecessors, (24613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:40,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24613 transitions. [2021-05-22 02:01:40,901 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24613 transitions. Word has length 29 [2021-05-22 02:01:40,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:40,901 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24613 transitions. [2021-05-22 02:01:40,901 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:40,901 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24613 transitions. [2021-05-22 02:01:40,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:40,909 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:40,909 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:40,910 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable527 [2021-05-22 02:01:40,910 INFO L430 AbstractCegarLoop]: === Iteration 529 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:40,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:40,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1289257479, now seen corresponding path program 524 times [2021-05-22 02:01:40,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:40,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108723441] [2021-05-22 02:01:40,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:41,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:41,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:41,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108723441] [2021-05-22 02:01:41,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108723441] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:41,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:41,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:41,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022881086] [2021-05-22 02:01:41,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:41,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:41,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:41,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:41,020 INFO L87 Difference]: Start difference. First operand 5187 states and 24613 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:41,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:41,109 INFO L93 Difference]: Finished difference Result 10402 states and 46482 transitions. [2021-05-22 02:01:41,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:41,109 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:41,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:41,134 INFO L225 Difference]: With dead ends: 10402 [2021-05-22 02:01:41,134 INFO L226 Difference]: Without dead ends: 9939 [2021-05-22 02:01:41,134 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:41,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9939 states. [2021-05-22 02:01:41,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9939 to 5139. [2021-05-22 02:01:41,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.751459711950175) internal successors, (24413), 5138 states have internal predecessors, (24413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24413 transitions. [2021-05-22 02:01:41,362 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24413 transitions. Word has length 29 [2021-05-22 02:01:41,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:41,362 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24413 transitions. [2021-05-22 02:01:41,362 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:41,362 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24413 transitions. [2021-05-22 02:01:41,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:41,371 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:41,371 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:41,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable528 [2021-05-22 02:01:41,371 INFO L430 AbstractCegarLoop]: === Iteration 530 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:41,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:41,371 INFO L82 PathProgramCache]: Analyzing trace with hash -965764857, now seen corresponding path program 525 times [2021-05-22 02:01:41,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:41,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830024084] [2021-05-22 02:01:41,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:41,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:41,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830024084] [2021-05-22 02:01:41,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830024084] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:41,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:41,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:41,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644652113] [2021-05-22 02:01:41,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:41,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:41,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:41,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:41,473 INFO L87 Difference]: Start difference. First operand 5139 states and 24413 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:41,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:41,575 INFO L93 Difference]: Finished difference Result 10548 states and 47167 transitions. [2021-05-22 02:01:41,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:41,575 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:41,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:41,600 INFO L225 Difference]: With dead ends: 10548 [2021-05-22 02:01:41,601 INFO L226 Difference]: Without dead ends: 10071 [2021-05-22 02:01:41,601 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:41,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10071 states. [2021-05-22 02:01:41,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10071 to 5215. [2021-05-22 02:01:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5214 states have (on average 4.737437667817415) internal successors, (24701), 5214 states have internal predecessors, (24701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:41,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 24701 transitions. [2021-05-22 02:01:41,826 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 24701 transitions. Word has length 29 [2021-05-22 02:01:41,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:41,826 INFO L482 AbstractCegarLoop]: Abstraction has 5215 states and 24701 transitions. [2021-05-22 02:01:41,826 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:41,826 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 24701 transitions. [2021-05-22 02:01:41,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:41,835 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:41,835 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:41,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable529 [2021-05-22 02:01:41,835 INFO L430 AbstractCegarLoop]: === Iteration 531 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:41,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:41,835 INFO L82 PathProgramCache]: Analyzing trace with hash -916197113, now seen corresponding path program 526 times [2021-05-22 02:01:41,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:41,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552580457] [2021-05-22 02:01:41,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:41,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:41,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:41,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552580457] [2021-05-22 02:01:41,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552580457] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:41,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:41,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:41,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652594825] [2021-05-22 02:01:41,935 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:41,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:41,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:41,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:41,936 INFO L87 Difference]: Start difference. First operand 5215 states and 24701 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:42,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:42,041 INFO L93 Difference]: Finished difference Result 10542 states and 47074 transitions. [2021-05-22 02:01:42,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:42,041 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:42,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:42,067 INFO L225 Difference]: With dead ends: 10542 [2021-05-22 02:01:42,067 INFO L226 Difference]: Without dead ends: 9995 [2021-05-22 02:01:42,067 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:42,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9995 states. [2021-05-22 02:01:42,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9995 to 5139. [2021-05-22 02:01:42,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.746788633709615) internal successors, (24389), 5138 states have internal predecessors, (24389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:42,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24389 transitions. [2021-05-22 02:01:42,291 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24389 transitions. Word has length 29 [2021-05-22 02:01:42,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:42,291 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24389 transitions. [2021-05-22 02:01:42,291 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:42,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24389 transitions. [2021-05-22 02:01:42,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:42,299 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:42,299 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:42,299 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable530 [2021-05-22 02:01:42,299 INFO L430 AbstractCegarLoop]: === Iteration 532 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:42,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:42,300 INFO L82 PathProgramCache]: Analyzing trace with hash -577759895, now seen corresponding path program 527 times [2021-05-22 02:01:42,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:42,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245581456] [2021-05-22 02:01:42,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:42,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:42,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:42,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245581456] [2021-05-22 02:01:42,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245581456] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:42,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:42,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:42,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241183305] [2021-05-22 02:01:42,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:42,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:42,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:42,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:42,412 INFO L87 Difference]: Start difference. First operand 5139 states and 24389 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:42,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:42,514 INFO L93 Difference]: Finished difference Result 10396 states and 46465 transitions. [2021-05-22 02:01:42,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:42,514 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:42,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:42,539 INFO L225 Difference]: With dead ends: 10396 [2021-05-22 02:01:42,540 INFO L226 Difference]: Without dead ends: 9981 [2021-05-22 02:01:42,540 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:42,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9981 states. [2021-05-22 02:01:42,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9981 to 5187. [2021-05-22 02:01:42,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.736791361357501) internal successors, (24565), 5186 states have internal predecessors, (24565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:42,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24565 transitions. [2021-05-22 02:01:42,776 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24565 transitions. Word has length 29 [2021-05-22 02:01:42,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:42,776 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24565 transitions. [2021-05-22 02:01:42,776 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:42,777 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24565 transitions. [2021-05-22 02:01:42,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:42,785 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:42,785 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:42,785 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable531 [2021-05-22 02:01:42,785 INFO L430 AbstractCegarLoop]: === Iteration 533 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:42,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:42,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1601127751, now seen corresponding path program 528 times [2021-05-22 02:01:42,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:42,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062097870] [2021-05-22 02:01:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:42,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:42,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062097870] [2021-05-22 02:01:42,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062097870] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:42,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:42,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:42,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152158950] [2021-05-22 02:01:42,899 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:42,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:42,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:42,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:42,899 INFO L87 Difference]: Start difference. First operand 5187 states and 24565 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:43,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:43,024 INFO L93 Difference]: Finished difference Result 10452 states and 46669 transitions. [2021-05-22 02:01:43,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:43,024 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:43,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:43,050 INFO L225 Difference]: With dead ends: 10452 [2021-05-22 02:01:43,050 INFO L226 Difference]: Without dead ends: 9901 [2021-05-22 02:01:43,050 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:43,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9901 states. [2021-05-22 02:01:43,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9901 to 5107. [2021-05-22 02:01:43,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5107 states, 5106 states have (on average 4.756952604778692) internal successors, (24289), 5106 states have internal predecessors, (24289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 24289 transitions. [2021-05-22 02:01:43,273 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 24289 transitions. Word has length 29 [2021-05-22 02:01:43,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:43,273 INFO L482 AbstractCegarLoop]: Abstraction has 5107 states and 24289 transitions. [2021-05-22 02:01:43,274 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:43,274 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 24289 transitions. [2021-05-22 02:01:43,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:43,282 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:43,282 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:43,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable532 [2021-05-22 02:01:43,282 INFO L430 AbstractCegarLoop]: === Iteration 534 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:43,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:43,282 INFO L82 PathProgramCache]: Analyzing trace with hash 2142791691, now seen corresponding path program 529 times [2021-05-22 02:01:43,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:43,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637585939] [2021-05-22 02:01:43,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:43,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:43,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637585939] [2021-05-22 02:01:43,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637585939] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:43,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:43,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:43,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035381485] [2021-05-22 02:01:43,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:43,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:43,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:43,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:43,397 INFO L87 Difference]: Start difference. First operand 5107 states and 24289 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:43,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:43,509 INFO L93 Difference]: Finished difference Result 10576 states and 47389 transitions. [2021-05-22 02:01:43,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:43,510 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:43,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:43,536 INFO L225 Difference]: With dead ends: 10576 [2021-05-22 02:01:43,536 INFO L226 Difference]: Without dead ends: 10161 [2021-05-22 02:01:43,536 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:43,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10161 states. [2021-05-22 02:01:43,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10161 to 5191. [2021-05-22 02:01:43,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.750867052023121) internal successors, (24657), 5190 states have internal predecessors, (24657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24657 transitions. [2021-05-22 02:01:43,772 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24657 transitions. Word has length 29 [2021-05-22 02:01:43,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:43,772 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24657 transitions. [2021-05-22 02:01:43,772 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:43,772 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24657 transitions. [2021-05-22 02:01:43,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:43,781 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:43,781 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:43,781 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable533 [2021-05-22 02:01:43,781 INFO L430 AbstractCegarLoop]: === Iteration 535 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:43,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:43,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1435512659, now seen corresponding path program 530 times [2021-05-22 02:01:43,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:43,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107007761] [2021-05-22 02:01:43,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:43,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:43,892 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:43,892 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107007761] [2021-05-22 02:01:43,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107007761] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:43,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:43,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:43,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587488687] [2021-05-22 02:01:43,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:43,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:43,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:43,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:43,893 INFO L87 Difference]: Start difference. First operand 5191 states and 24657 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:44,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:44,001 INFO L93 Difference]: Finished difference Result 10638 states and 47610 transitions. [2021-05-22 02:01:44,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:44,001 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:44,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:44,030 INFO L225 Difference]: With dead ends: 10638 [2021-05-22 02:01:44,030 INFO L226 Difference]: Without dead ends: 10113 [2021-05-22 02:01:44,030 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:44,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10113 states. [2021-05-22 02:01:44,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10113 to 5143. [2021-05-22 02:01:44,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.756320497860755) internal successors, (24457), 5142 states have internal predecessors, (24457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:44,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24457 transitions. [2021-05-22 02:01:44,272 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24457 transitions. Word has length 29 [2021-05-22 02:01:44,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:44,272 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24457 transitions. [2021-05-22 02:01:44,272 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:44,272 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24457 transitions. [2021-05-22 02:01:44,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:44,281 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:44,281 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:44,281 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable534 [2021-05-22 02:01:44,281 INFO L430 AbstractCegarLoop]: === Iteration 536 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:44,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:44,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1059205109, now seen corresponding path program 531 times [2021-05-22 02:01:44,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:44,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666549090] [2021-05-22 02:01:44,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:44,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:44,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:44,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666549090] [2021-05-22 02:01:44,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666549090] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:44,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:44,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:44,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776925395] [2021-05-22 02:01:44,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:44,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:44,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:44,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:44,398 INFO L87 Difference]: Start difference. First operand 5143 states and 24457 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:44,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:44,532 INFO L93 Difference]: Finished difference Result 10574 states and 47360 transitions. [2021-05-22 02:01:44,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:44,532 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:44,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:44,560 INFO L225 Difference]: With dead ends: 10574 [2021-05-22 02:01:44,561 INFO L226 Difference]: Without dead ends: 10159 [2021-05-22 02:01:44,561 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:44,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10159 states. [2021-05-22 02:01:44,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10159 to 5191. [2021-05-22 02:01:44,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.746242774566474) internal successors, (24633), 5190 states have internal predecessors, (24633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:44,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24633 transitions. [2021-05-22 02:01:44,805 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24633 transitions. Word has length 29 [2021-05-22 02:01:44,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:44,805 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24633 transitions. [2021-05-22 02:01:44,805 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:44,805 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24633 transitions. [2021-05-22 02:01:44,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:44,814 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:44,814 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:44,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable535 [2021-05-22 02:01:44,815 INFO L430 AbstractCegarLoop]: === Iteration 537 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:44,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:44,815 INFO L82 PathProgramCache]: Analyzing trace with hash -29639733, now seen corresponding path program 532 times [2021-05-22 02:01:44,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:44,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188176101] [2021-05-22 02:01:44,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:44,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:44,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:44,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188176101] [2021-05-22 02:01:44,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188176101] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:44,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:44,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:44,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332774299] [2021-05-22 02:01:44,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:44,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:44,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:44,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:44,940 INFO L87 Difference]: Start difference. First operand 5191 states and 24633 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:45,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:45,050 INFO L93 Difference]: Finished difference Result 10634 states and 47576 transitions. [2021-05-22 02:01:45,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:45,050 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:45,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:45,078 INFO L225 Difference]: With dead ends: 10634 [2021-05-22 02:01:45,078 INFO L226 Difference]: Without dead ends: 10111 [2021-05-22 02:01:45,078 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:45,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10111 states. [2021-05-22 02:01:45,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10111 to 5143. [2021-05-22 02:01:45,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.751653053286659) internal successors, (24433), 5142 states have internal predecessors, (24433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:45,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24433 transitions. [2021-05-22 02:01:45,317 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24433 transitions. Word has length 29 [2021-05-22 02:01:45,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:45,317 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24433 transitions. [2021-05-22 02:01:45,317 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:45,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24433 transitions. [2021-05-22 02:01:45,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:45,326 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:45,326 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:45,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable536 [2021-05-22 02:01:45,326 INFO L430 AbstractCegarLoop]: === Iteration 538 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:45,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:45,327 INFO L82 PathProgramCache]: Analyzing trace with hash 144286701, now seen corresponding path program 533 times [2021-05-22 02:01:45,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:45,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63802549] [2021-05-22 02:01:45,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:45,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:45,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63802549] [2021-05-22 02:01:45,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63802549] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:45,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:45,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:45,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21842489] [2021-05-22 02:01:45,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:45,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:45,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:45,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:45,446 INFO L87 Difference]: Start difference. First operand 5143 states and 24433 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:45,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:45,559 INFO L93 Difference]: Finished difference Result 10728 states and 48021 transitions. [2021-05-22 02:01:45,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:45,559 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:45,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:45,589 INFO L225 Difference]: With dead ends: 10728 [2021-05-22 02:01:45,589 INFO L226 Difference]: Without dead ends: 10251 [2021-05-22 02:01:45,589 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:45,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10251 states. [2021-05-22 02:01:45,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10251 to 5221. [2021-05-22 02:01:45,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5221 states, 5220 states have (on average 4.736781609195402) internal successors, (24726), 5220 states have internal predecessors, (24726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:45,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 24726 transitions. [2021-05-22 02:01:45,833 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 24726 transitions. Word has length 29 [2021-05-22 02:01:45,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:45,833 INFO L482 AbstractCegarLoop]: Abstraction has 5221 states and 24726 transitions. [2021-05-22 02:01:45,833 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:45,833 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 24726 transitions. [2021-05-22 02:01:45,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:45,842 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:45,842 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:45,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable537 [2021-05-22 02:01:45,842 INFO L430 AbstractCegarLoop]: === Iteration 539 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:45,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:45,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1247857845, now seen corresponding path program 534 times [2021-05-22 02:01:45,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:45,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098394548] [2021-05-22 02:01:45,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:45,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:45,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098394548] [2021-05-22 02:01:45,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098394548] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:45,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:45,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:45,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169140348] [2021-05-22 02:01:45,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:45,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:45,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:45,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:45,949 INFO L87 Difference]: Start difference. First operand 5221 states and 24726 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:46,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:46,068 INFO L93 Difference]: Finished difference Result 10726 states and 47938 transitions. [2021-05-22 02:01:46,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:46,068 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:46,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:46,096 INFO L225 Difference]: With dead ends: 10726 [2021-05-22 02:01:46,096 INFO L226 Difference]: Without dead ends: 10149 [2021-05-22 02:01:46,096 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:46,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10149 states. [2021-05-22 02:01:46,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10149 to 5119. [2021-05-22 02:01:46,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 5118 states have (on average 4.756740914419695) internal successors, (24345), 5118 states have internal predecessors, (24345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:46,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 24345 transitions. [2021-05-22 02:01:46,335 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 24345 transitions. Word has length 29 [2021-05-22 02:01:46,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:46,335 INFO L482 AbstractCegarLoop]: Abstraction has 5119 states and 24345 transitions. [2021-05-22 02:01:46,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:46,335 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 24345 transitions. [2021-05-22 02:01:46,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:46,344 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:46,344 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:46,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable538 [2021-05-22 02:01:46,344 INFO L430 AbstractCegarLoop]: === Iteration 540 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:46,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:46,345 INFO L82 PathProgramCache]: Analyzing trace with hash -694128535, now seen corresponding path program 535 times [2021-05-22 02:01:46,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:46,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508731105] [2021-05-22 02:01:46,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:46,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:46,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:46,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508731105] [2021-05-22 02:01:46,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508731105] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:46,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:46,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:46,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624448541] [2021-05-22 02:01:46,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:46,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:46,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:46,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:46,452 INFO L87 Difference]: Start difference. First operand 5119 states and 24345 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:46,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:46,565 INFO L93 Difference]: Finished difference Result 10570 states and 47358 transitions. [2021-05-22 02:01:46,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:46,566 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:46,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:46,593 INFO L225 Difference]: With dead ends: 10570 [2021-05-22 02:01:46,594 INFO L226 Difference]: Without dead ends: 10155 [2021-05-22 02:01:46,594 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:46,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10155 states. [2021-05-22 02:01:46,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10155 to 5191. [2021-05-22 02:01:46,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.7485549132947975) internal successors, (24645), 5190 states have internal predecessors, (24645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24645 transitions. [2021-05-22 02:01:46,833 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24645 transitions. Word has length 29 [2021-05-22 02:01:46,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:46,833 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24645 transitions. [2021-05-22 02:01:46,833 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:46,833 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24645 transitions. [2021-05-22 02:01:46,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:46,842 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:46,842 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:46,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable539 [2021-05-22 02:01:46,842 INFO L430 AbstractCegarLoop]: === Iteration 541 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:46,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:46,842 INFO L82 PathProgramCache]: Analyzing trace with hash 22534411, now seen corresponding path program 536 times [2021-05-22 02:01:46,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:46,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787478727] [2021-05-22 02:01:46,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:46,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:46,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787478727] [2021-05-22 02:01:46,949 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787478727] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:46,949 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:46,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:46,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450016043] [2021-05-22 02:01:46,949 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:46,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:46,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:46,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:46,949 INFO L87 Difference]: Start difference. First operand 5191 states and 24645 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:47,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:47,061 INFO L93 Difference]: Finished difference Result 10632 states and 47579 transitions. [2021-05-22 02:01:47,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:47,061 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:47,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:47,088 INFO L225 Difference]: With dead ends: 10632 [2021-05-22 02:01:47,089 INFO L226 Difference]: Without dead ends: 10107 [2021-05-22 02:01:47,089 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:47,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10107 states. [2021-05-22 02:01:47,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10107 to 5143. [2021-05-22 02:01:47,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.753986775573707) internal successors, (24445), 5142 states have internal predecessors, (24445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24445 transitions. [2021-05-22 02:01:47,328 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24445 transitions. Word has length 29 [2021-05-22 02:01:47,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:47,328 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24445 transitions. [2021-05-22 02:01:47,328 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:47,328 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24445 transitions. [2021-05-22 02:01:47,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:47,337 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:47,337 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:47,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable540 [2021-05-22 02:01:47,337 INFO L430 AbstractCegarLoop]: === Iteration 542 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:47,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:47,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1251192843, now seen corresponding path program 537 times [2021-05-22 02:01:47,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:47,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316861563] [2021-05-22 02:01:47,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:47,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:47,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:47,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316861563] [2021-05-22 02:01:47,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316861563] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:47,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:47,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:47,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095820533] [2021-05-22 02:01:47,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:47,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:47,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:47,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:47,434 INFO L87 Difference]: Start difference. First operand 5143 states and 24445 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:47,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:47,546 INFO L93 Difference]: Finished difference Result 10564 states and 47317 transitions. [2021-05-22 02:01:47,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:47,546 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:47,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:47,574 INFO L225 Difference]: With dead ends: 10564 [2021-05-22 02:01:47,574 INFO L226 Difference]: Without dead ends: 10149 [2021-05-22 02:01:47,574 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:47,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10149 states. [2021-05-22 02:01:47,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10149 to 5191. [2021-05-22 02:01:47,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.74393063583815) internal successors, (24621), 5190 states have internal predecessors, (24621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:47,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24621 transitions. [2021-05-22 02:01:47,862 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24621 transitions. Word has length 29 [2021-05-22 02:01:47,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:47,862 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24621 transitions. [2021-05-22 02:01:47,862 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:47,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24621 transitions. [2021-05-22 02:01:47,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:47,872 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:47,872 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:47,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable541 [2021-05-22 02:01:47,872 INFO L430 AbstractCegarLoop]: === Iteration 543 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:47,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:47,873 INFO L82 PathProgramCache]: Analyzing trace with hash 395803595, now seen corresponding path program 538 times [2021-05-22 02:01:47,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:47,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398785981] [2021-05-22 02:01:47,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:47,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:47,965 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:47,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398785981] [2021-05-22 02:01:47,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398785981] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:47,965 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:47,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:47,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314411331] [2021-05-22 02:01:47,966 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:47,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:47,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:47,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:47,966 INFO L87 Difference]: Start difference. First operand 5191 states and 24621 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:48,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:48,073 INFO L93 Difference]: Finished difference Result 10620 states and 47521 transitions. [2021-05-22 02:01:48,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:48,073 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:48,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:48,100 INFO L225 Difference]: With dead ends: 10620 [2021-05-22 02:01:48,100 INFO L226 Difference]: Without dead ends: 10101 [2021-05-22 02:01:48,100 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:48,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10101 states. [2021-05-22 02:01:48,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10101 to 5143. [2021-05-22 02:01:48,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.749319330999611) internal successors, (24421), 5142 states have internal predecessors, (24421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:48,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24421 transitions. [2021-05-22 02:01:48,337 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24421 transitions. Word has length 29 [2021-05-22 02:01:48,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:48,337 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24421 transitions. [2021-05-22 02:01:48,337 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:48,337 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24421 transitions. [2021-05-22 02:01:48,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:48,346 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:48,346 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:48,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable542 [2021-05-22 02:01:48,346 INFO L430 AbstractCegarLoop]: === Iteration 544 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:48,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:48,346 INFO L82 PathProgramCache]: Analyzing trace with hash -102468627, now seen corresponding path program 539 times [2021-05-22 02:01:48,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:48,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943665635] [2021-05-22 02:01:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:48,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:48,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943665635] [2021-05-22 02:01:48,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943665635] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:48,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:48,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:48,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674078413] [2021-05-22 02:01:48,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:48,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:48,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:48,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:48,474 INFO L87 Difference]: Start difference. First operand 5143 states and 24421 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:48,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:48,604 INFO L93 Difference]: Finished difference Result 10716 states and 47971 transitions. [2021-05-22 02:01:48,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:48,604 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:48,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:48,634 INFO L225 Difference]: With dead ends: 10716 [2021-05-22 02:01:48,634 INFO L226 Difference]: Without dead ends: 10239 [2021-05-22 02:01:48,634 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:48,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10239 states. [2021-05-22 02:01:48,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10239 to 5219. [2021-05-22 02:01:48,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5219 states, 5218 states have (on average 4.73533921042545) internal successors, (24709), 5218 states have internal predecessors, (24709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:48,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 24709 transitions. [2021-05-22 02:01:48,892 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 24709 transitions. Word has length 29 [2021-05-22 02:01:48,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:48,892 INFO L482 AbstractCegarLoop]: Abstraction has 5219 states and 24709 transitions. [2021-05-22 02:01:48,892 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:48,892 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 24709 transitions. [2021-05-22 02:01:48,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:48,901 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:48,901 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:48,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable543 [2021-05-22 02:01:48,902 INFO L430 AbstractCegarLoop]: === Iteration 545 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:48,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:48,902 INFO L82 PathProgramCache]: Analyzing trace with hash -843420725, now seen corresponding path program 540 times [2021-05-22 02:01:48,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:48,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163692603] [2021-05-22 02:01:48,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:48,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:48,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:48,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163692603] [2021-05-22 02:01:48,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163692603] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:48,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:48,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:48,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483745843] [2021-05-22 02:01:48,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:48,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:48,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:48,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:48,999 INFO L87 Difference]: Start difference. First operand 5219 states and 24709 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:49,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:49,115 INFO L93 Difference]: Finished difference Result 10710 states and 47878 transitions. [2021-05-22 02:01:49,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:49,115 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:49,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:49,143 INFO L225 Difference]: With dead ends: 10710 [2021-05-22 02:01:49,143 INFO L226 Difference]: Without dead ends: 10139 [2021-05-22 02:01:49,143 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:49,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10139 states. [2021-05-22 02:01:49,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10139 to 5119. [2021-05-22 02:01:49,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 5118 states have (on average 4.754396248534584) internal successors, (24333), 5118 states have internal predecessors, (24333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:49,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 24333 transitions. [2021-05-22 02:01:49,386 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 24333 transitions. Word has length 29 [2021-05-22 02:01:49,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:49,386 INFO L482 AbstractCegarLoop]: Abstraction has 5119 states and 24333 transitions. [2021-05-22 02:01:49,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:49,386 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 24333 transitions. [2021-05-22 02:01:49,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:49,395 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:49,395 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:49,395 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable544 [2021-05-22 02:01:49,395 INFO L430 AbstractCegarLoop]: === Iteration 546 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:49,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:49,395 INFO L82 PathProgramCache]: Analyzing trace with hash 31860747, now seen corresponding path program 541 times [2021-05-22 02:01:49,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:49,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736866823] [2021-05-22 02:01:49,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:49,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:49,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:49,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736866823] [2021-05-22 02:01:49,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736866823] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:49,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:49,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:49,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2172052] [2021-05-22 02:01:49,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:49,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:49,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:49,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:49,501 INFO L87 Difference]: Start difference. First operand 5119 states and 24333 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:49,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:49,608 INFO L93 Difference]: Finished difference Result 10566 states and 47336 transitions. [2021-05-22 02:01:49,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:49,609 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:49,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:49,635 INFO L225 Difference]: With dead ends: 10566 [2021-05-22 02:01:49,636 INFO L226 Difference]: Without dead ends: 10151 [2021-05-22 02:01:49,636 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:49,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10151 states. [2021-05-22 02:01:49,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10151 to 5191. [2021-05-22 02:01:49,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.746242774566474) internal successors, (24633), 5190 states have internal predecessors, (24633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:49,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24633 transitions. [2021-05-22 02:01:49,886 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24633 transitions. Word has length 29 [2021-05-22 02:01:49,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:49,886 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24633 transitions. [2021-05-22 02:01:49,886 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:49,886 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24633 transitions. [2021-05-22 02:01:49,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:49,895 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:49,895 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:49,895 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable545 [2021-05-22 02:01:49,895 INFO L430 AbstractCegarLoop]: === Iteration 547 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:49,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:49,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1061426123, now seen corresponding path program 542 times [2021-05-22 02:01:49,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:49,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561668571] [2021-05-22 02:01:49,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:50,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:50,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:50,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561668571] [2021-05-22 02:01:50,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561668571] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:50,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:50,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:50,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651900036] [2021-05-22 02:01:50,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:50,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:50,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:50,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:50,002 INFO L87 Difference]: Start difference. First operand 5191 states and 24633 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:50,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:50,109 INFO L93 Difference]: Finished difference Result 10626 states and 47552 transitions. [2021-05-22 02:01:50,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:50,109 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:50,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:50,136 INFO L225 Difference]: With dead ends: 10626 [2021-05-22 02:01:50,137 INFO L226 Difference]: Without dead ends: 10103 [2021-05-22 02:01:50,137 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:50,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10103 states. [2021-05-22 02:01:50,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10103 to 5143. [2021-05-22 02:01:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.751653053286659) internal successors, (24433), 5142 states have internal predecessors, (24433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:50,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24433 transitions. [2021-05-22 02:01:50,376 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24433 transitions. Word has length 29 [2021-05-22 02:01:50,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:50,376 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24433 transitions. [2021-05-22 02:01:50,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:50,376 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24433 transitions. [2021-05-22 02:01:50,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:50,386 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:50,386 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:50,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable546 [2021-05-22 02:01:50,386 INFO L430 AbstractCegarLoop]: === Iteration 548 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:50,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:50,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1991200791, now seen corresponding path program 543 times [2021-05-22 02:01:50,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:50,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126890199] [2021-05-22 02:01:50,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:50,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:50,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:50,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126890199] [2021-05-22 02:01:50,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126890199] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:50,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:50,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:50,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141138078] [2021-05-22 02:01:50,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:50,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:50,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:50,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:50,481 INFO L87 Difference]: Start difference. First operand 5143 states and 24433 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:50,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:50,595 INFO L93 Difference]: Finished difference Result 10562 states and 47300 transitions. [2021-05-22 02:01:50,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:50,596 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:50,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:50,623 INFO L225 Difference]: With dead ends: 10562 [2021-05-22 02:01:50,623 INFO L226 Difference]: Without dead ends: 10147 [2021-05-22 02:01:50,623 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:50,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10147 states. [2021-05-22 02:01:50,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10147 to 5191. [2021-05-22 02:01:50,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.741618497109827) internal successors, (24609), 5190 states have internal predecessors, (24609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:50,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24609 transitions. [2021-05-22 02:01:50,864 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24609 transitions. Word has length 29 [2021-05-22 02:01:50,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:50,864 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24609 transitions. [2021-05-22 02:01:50,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:50,864 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24609 transitions. [2021-05-22 02:01:50,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:50,873 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:50,873 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:50,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable547 [2021-05-22 02:01:50,873 INFO L430 AbstractCegarLoop]: === Iteration 549 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:50,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:50,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1526537269, now seen corresponding path program 544 times [2021-05-22 02:01:50,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:50,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064208157] [2021-05-22 02:01:50,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:50,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:50,980 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:50,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064208157] [2021-05-22 02:01:50,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064208157] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:50,980 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:50,980 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:50,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330415630] [2021-05-22 02:01:50,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:50,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:50,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:50,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:50,980 INFO L87 Difference]: Start difference. First operand 5191 states and 24609 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:51,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:51,102 INFO L93 Difference]: Finished difference Result 10618 states and 47504 transitions. [2021-05-22 02:01:51,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:51,102 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:51,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:51,130 INFO L225 Difference]: With dead ends: 10618 [2021-05-22 02:01:51,130 INFO L226 Difference]: Without dead ends: 10099 [2021-05-22 02:01:51,130 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:51,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10099 states. [2021-05-22 02:01:51,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10099 to 5143. [2021-05-22 02:01:51,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.7469856087125635) internal successors, (24409), 5142 states have internal predecessors, (24409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:51,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24409 transitions. [2021-05-22 02:01:51,364 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24409 transitions. Word has length 29 [2021-05-22 02:01:51,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:51,364 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24409 transitions. [2021-05-22 02:01:51,364 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:51,364 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24409 transitions. [2021-05-22 02:01:51,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:51,373 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:51,373 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:51,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable548 [2021-05-22 02:01:51,373 INFO L430 AbstractCegarLoop]: === Iteration 550 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:51,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:51,373 INFO L82 PathProgramCache]: Analyzing trace with hash -628887669, now seen corresponding path program 545 times [2021-05-22 02:01:51,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:51,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011493003] [2021-05-22 02:01:51,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:51,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:51,466 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:51,466 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011493003] [2021-05-22 02:01:51,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011493003] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:51,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:51,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:51,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366192034] [2021-05-22 02:01:51,467 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:51,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:51,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:51,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:51,467 INFO L87 Difference]: Start difference. First operand 5143 states and 24409 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:51,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:51,580 INFO L93 Difference]: Finished difference Result 10710 states and 47944 transitions. [2021-05-22 02:01:51,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:51,581 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:51,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:51,608 INFO L225 Difference]: With dead ends: 10710 [2021-05-22 02:01:51,608 INFO L226 Difference]: Without dead ends: 10235 [2021-05-22 02:01:51,609 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:51,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10235 states. [2021-05-22 02:01:51,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10235 to 5219. [2021-05-22 02:01:51,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5219 states, 5218 states have (on average 4.733039478727481) internal successors, (24697), 5218 states have internal predecessors, (24697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:51,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 24697 transitions. [2021-05-22 02:01:51,846 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 24697 transitions. Word has length 29 [2021-05-22 02:01:51,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:51,846 INFO L482 AbstractCegarLoop]: Abstraction has 5219 states and 24697 transitions. [2021-05-22 02:01:51,846 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:51,846 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 24697 transitions. [2021-05-22 02:01:51,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:51,855 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:51,855 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:51,855 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable549 [2021-05-22 02:01:51,855 INFO L430 AbstractCegarLoop]: === Iteration 551 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:51,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:51,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1622742633, now seen corresponding path program 546 times [2021-05-22 02:01:51,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:51,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23490639] [2021-05-22 02:01:51,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:51,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:51,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23490639] [2021-05-22 02:01:51,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23490639] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:51,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:51,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:51,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050380126] [2021-05-22 02:01:51,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:51,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:51,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:51,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:51,950 INFO L87 Difference]: Start difference. First operand 5219 states and 24697 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:52,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:52,064 INFO L93 Difference]: Finished difference Result 10706 states and 47856 transitions. [2021-05-22 02:01:52,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:52,065 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:52,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:52,091 INFO L225 Difference]: With dead ends: 10706 [2021-05-22 02:01:52,091 INFO L226 Difference]: Without dead ends: 10135 [2021-05-22 02:01:52,091 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:52,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10135 states. [2021-05-22 02:01:52,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10135 to 5119. [2021-05-22 02:01:52,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 5118 states have (on average 4.7520515826494725) internal successors, (24321), 5118 states have internal predecessors, (24321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:52,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 24321 transitions. [2021-05-22 02:01:52,328 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 24321 transitions. Word has length 29 [2021-05-22 02:01:52,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:52,328 INFO L482 AbstractCegarLoop]: Abstraction has 5119 states and 24321 transitions. [2021-05-22 02:01:52,328 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:52,328 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 24321 transitions. [2021-05-22 02:01:52,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:52,338 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:52,338 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:52,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable550 [2021-05-22 02:01:52,338 INFO L430 AbstractCegarLoop]: === Iteration 552 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:52,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:52,338 INFO L82 PathProgramCache]: Analyzing trace with hash 223446829, now seen corresponding path program 547 times [2021-05-22 02:01:52,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:52,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420528897] [2021-05-22 02:01:52,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:52,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:52,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420528897] [2021-05-22 02:01:52,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420528897] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:52,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:52,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:52,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550057151] [2021-05-22 02:01:52,433 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:52,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:52,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:52,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:52,434 INFO L87 Difference]: Start difference. First operand 5119 states and 24321 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:52,559 INFO L93 Difference]: Finished difference Result 10854 states and 48642 transitions. [2021-05-22 02:01:52,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:52,560 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:52,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:52,587 INFO L225 Difference]: With dead ends: 10854 [2021-05-22 02:01:52,587 INFO L226 Difference]: Without dead ends: 10377 [2021-05-22 02:01:52,588 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:52,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10377 states. [2021-05-22 02:01:52,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10377 to 5235. [2021-05-22 02:01:52,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5235 states, 5234 states have (on average 4.741115781429118) internal successors, (24815), 5234 states have internal predecessors, (24815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:52,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5235 states to 5235 states and 24815 transitions. [2021-05-22 02:01:52,827 INFO L78 Accepts]: Start accepts. Automaton has 5235 states and 24815 transitions. Word has length 29 [2021-05-22 02:01:52,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:52,827 INFO L482 AbstractCegarLoop]: Abstraction has 5235 states and 24815 transitions. [2021-05-22 02:01:52,827 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:52,827 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 24815 transitions. [2021-05-22 02:01:52,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:52,836 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:52,836 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:52,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable551 [2021-05-22 02:01:52,836 INFO L430 AbstractCegarLoop]: === Iteration 553 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:52,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:52,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1168697717, now seen corresponding path program 548 times [2021-05-22 02:01:52,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:52,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777571435] [2021-05-22 02:01:52,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:52,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:52,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:52,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777571435] [2021-05-22 02:01:52,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777571435] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:52,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:52,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:52,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463699177] [2021-05-22 02:01:52,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:52,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:52,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:52,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:52,936 INFO L87 Difference]: Start difference. First operand 5235 states and 24815 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:53,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:53,055 INFO L93 Difference]: Finished difference Result 10852 states and 48559 transitions. [2021-05-22 02:01:53,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:53,055 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:53,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:53,083 INFO L225 Difference]: With dead ends: 10852 [2021-05-22 02:01:53,083 INFO L226 Difference]: Without dead ends: 10299 [2021-05-22 02:01:53,083 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:53,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10299 states. [2021-05-22 02:01:53,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10299 to 5157. [2021-05-22 02:01:53,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 4.748642358417378) internal successors, (24484), 5156 states have internal predecessors, (24484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:53,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 24484 transitions. [2021-05-22 02:01:53,332 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 24484 transitions. Word has length 29 [2021-05-22 02:01:53,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:53,332 INFO L482 AbstractCegarLoop]: Abstraction has 5157 states and 24484 transitions. [2021-05-22 02:01:53,332 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:53,332 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 24484 transitions. [2021-05-22 02:01:53,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:53,341 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:53,341 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:53,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable552 [2021-05-22 02:01:53,341 INFO L430 AbstractCegarLoop]: === Iteration 554 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:53,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:53,342 INFO L82 PathProgramCache]: Analyzing trace with hash -623350133, now seen corresponding path program 549 times [2021-05-22 02:01:53,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:53,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258756838] [2021-05-22 02:01:53,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:53,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:53,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:53,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258756838] [2021-05-22 02:01:53,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258756838] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:53,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:53,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:53,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161234167] [2021-05-22 02:01:53,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:53,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:53,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:53,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:53,438 INFO L87 Difference]: Start difference. First operand 5157 states and 24484 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:53,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:53,548 INFO L93 Difference]: Finished difference Result 10848 states and 48585 transitions. [2021-05-22 02:01:53,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:53,548 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:53,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:53,579 INFO L225 Difference]: With dead ends: 10848 [2021-05-22 02:01:53,579 INFO L226 Difference]: Without dead ends: 10371 [2021-05-22 02:01:53,579 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:53,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10371 states. [2021-05-22 02:01:53,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10371 to 5233. [2021-05-22 02:01:53,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 4.734709480122324) internal successors, (24772), 5232 states have internal predecessors, (24772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:53,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 24772 transitions. [2021-05-22 02:01:53,826 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 24772 transitions. Word has length 29 [2021-05-22 02:01:53,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:53,826 INFO L482 AbstractCegarLoop]: Abstraction has 5233 states and 24772 transitions. [2021-05-22 02:01:53,826 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:53,826 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 24772 transitions. [2021-05-22 02:01:53,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:53,835 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:53,835 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:53,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable553 [2021-05-22 02:01:53,835 INFO L430 AbstractCegarLoop]: === Iteration 555 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:53,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:53,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1220308747, now seen corresponding path program 550 times [2021-05-22 02:01:53,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:53,836 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301159003] [2021-05-22 02:01:53,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:53,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:53,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:53,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301159003] [2021-05-22 02:01:53,932 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301159003] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:53,932 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:53,932 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:53,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862765957] [2021-05-22 02:01:53,932 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:53,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:53,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:53,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:53,933 INFO L87 Difference]: Start difference. First operand 5233 states and 24772 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:54,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:54,045 INFO L93 Difference]: Finished difference Result 10842 states and 48492 transitions. [2021-05-22 02:01:54,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:54,045 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:54,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:54,076 INFO L225 Difference]: With dead ends: 10842 [2021-05-22 02:01:54,077 INFO L226 Difference]: Without dead ends: 10295 [2021-05-22 02:01:54,077 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:54,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10295 states. [2021-05-22 02:01:54,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10295 to 5157. [2021-05-22 02:01:54,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 4.741272304111715) internal successors, (24446), 5156 states have internal predecessors, (24446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:54,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 24446 transitions. [2021-05-22 02:01:54,389 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 24446 transitions. Word has length 29 [2021-05-22 02:01:54,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:54,389 INFO L482 AbstractCegarLoop]: Abstraction has 5157 states and 24446 transitions. [2021-05-22 02:01:54,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:54,389 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 24446 transitions. [2021-05-22 02:01:54,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:54,400 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:54,401 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:54,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable554 [2021-05-22 02:01:54,401 INFO L430 AbstractCegarLoop]: === Iteration 556 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:54,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:54,401 INFO L82 PathProgramCache]: Analyzing trace with hash -259092759, now seen corresponding path program 551 times [2021-05-22 02:01:54,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:54,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612291632] [2021-05-22 02:01:54,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:54,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:54,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:54,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612291632] [2021-05-22 02:01:54,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612291632] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:54,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:54,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:54,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471355468] [2021-05-22 02:01:54,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:54,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:54,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:54,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:54,525 INFO L87 Difference]: Start difference. First operand 5157 states and 24446 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:54,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:54,669 INFO L93 Difference]: Finished difference Result 10844 states and 48537 transitions. [2021-05-22 02:01:54,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:54,669 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:54,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:54,703 INFO L225 Difference]: With dead ends: 10844 [2021-05-22 02:01:54,703 INFO L226 Difference]: Without dead ends: 10369 [2021-05-22 02:01:54,704 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 151.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:54,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10369 states. [2021-05-22 02:01:55,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10369 to 5233. [2021-05-22 02:01:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 4.727446483180428) internal successors, (24734), 5232 states have internal predecessors, (24734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:55,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 24734 transitions. [2021-05-22 02:01:55,034 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 24734 transitions. Word has length 29 [2021-05-22 02:01:55,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:55,034 INFO L482 AbstractCegarLoop]: Abstraction has 5233 states and 24734 transitions. [2021-05-22 02:01:55,034 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:55,034 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 24734 transitions. [2021-05-22 02:01:55,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:55,046 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:55,046 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:55,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable555 [2021-05-22 02:01:55,046 INFO L430 AbstractCegarLoop]: === Iteration 557 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:55,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:55,046 INFO L82 PathProgramCache]: Analyzing trace with hash 821969867, now seen corresponding path program 552 times [2021-05-22 02:01:55,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:55,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082701093] [2021-05-22 02:01:55,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:55,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:55,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:55,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082701093] [2021-05-22 02:01:55,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082701093] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:55,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:55,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:55,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236844600] [2021-05-22 02:01:55,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:55,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:55,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:55,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:55,169 INFO L87 Difference]: Start difference. First operand 5233 states and 24734 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:55,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:55,330 INFO L93 Difference]: Finished difference Result 10840 states and 48449 transitions. [2021-05-22 02:01:55,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:55,330 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:55,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:55,364 INFO L225 Difference]: With dead ends: 10840 [2021-05-22 02:01:55,364 INFO L226 Difference]: Without dead ends: 10243 [2021-05-22 02:01:55,365 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:55,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10243 states. [2021-05-22 02:01:55,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10243 to 5107. [2021-05-22 02:01:55,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5107 states, 5106 states have (on average 4.756169212690952) internal successors, (24285), 5106 states have internal predecessors, (24285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:55,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 24285 transitions. [2021-05-22 02:01:55,694 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 24285 transitions. Word has length 29 [2021-05-22 02:01:55,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:55,694 INFO L482 AbstractCegarLoop]: Abstraction has 5107 states and 24285 transitions. [2021-05-22 02:01:55,694 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:55,695 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 24285 transitions. [2021-05-22 02:01:55,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:55,705 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:55,706 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:55,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable556 [2021-05-22 02:01:55,706 INFO L430 AbstractCegarLoop]: === Iteration 558 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:55,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:55,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1252809581, now seen corresponding path program 553 times [2021-05-22 02:01:55,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:55,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865634109] [2021-05-22 02:01:55,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:55,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:55,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:55,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865634109] [2021-05-22 02:01:55,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865634109] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:55,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:55,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:55,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763654304] [2021-05-22 02:01:55,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:55,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:55,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:55,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:55,865 INFO L87 Difference]: Start difference. First operand 5107 states and 24285 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:56,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:56,008 INFO L93 Difference]: Finished difference Result 10212 states and 45671 transitions. [2021-05-22 02:01:56,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:56,008 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:56,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:56,040 INFO L225 Difference]: With dead ends: 10212 [2021-05-22 02:01:56,041 INFO L226 Difference]: Without dead ends: 9797 [2021-05-22 02:01:56,041 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 163.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:56,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9797 states. [2021-05-22 02:01:56,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9797 to 5163. [2021-05-22 02:01:56,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 4.7502905850445565) internal successors, (24521), 5162 states have internal predecessors, (24521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:56,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 24521 transitions. [2021-05-22 02:01:56,361 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 24521 transitions. Word has length 29 [2021-05-22 02:01:56,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:56,361 INFO L482 AbstractCegarLoop]: Abstraction has 5163 states and 24521 transitions. [2021-05-22 02:01:56,362 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:56,362 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 24521 transitions. [2021-05-22 02:01:56,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:56,373 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:56,373 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:56,373 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable557 [2021-05-22 02:01:56,373 INFO L430 AbstractCegarLoop]: === Iteration 559 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:56,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:56,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1664217577, now seen corresponding path program 554 times [2021-05-22 02:01:56,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:56,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834914298] [2021-05-22 02:01:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:56,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:56,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834914298] [2021-05-22 02:01:56,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834914298] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:56,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:56,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:56,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211023424] [2021-05-22 02:01:56,514 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:56,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:56,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:56,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:56,514 INFO L87 Difference]: Start difference. First operand 5163 states and 24521 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:56,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:56,643 INFO L93 Difference]: Finished difference Result 10212 states and 45639 transitions. [2021-05-22 02:01:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:56,644 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:56,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:56,675 INFO L225 Difference]: With dead ends: 10212 [2021-05-22 02:01:56,675 INFO L226 Difference]: Without dead ends: 9765 [2021-05-22 02:01:56,675 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:56,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9765 states. [2021-05-22 02:01:56,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9765 to 5131. [2021-05-22 02:01:56,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.754970760233918) internal successors, (24393), 5130 states have internal predecessors, (24393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:56,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24393 transitions. [2021-05-22 02:01:56,993 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24393 transitions. Word has length 29 [2021-05-22 02:01:56,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:56,994 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24393 transitions. [2021-05-22 02:01:56,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:56,994 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24393 transitions. [2021-05-22 02:01:57,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:57,005 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:57,005 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:57,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable558 [2021-05-22 02:01:57,005 INFO L430 AbstractCegarLoop]: === Iteration 560 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:57,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:57,005 INFO L82 PathProgramCache]: Analyzing trace with hash -770251957, now seen corresponding path program 555 times [2021-05-22 02:01:57,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:57,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627408125] [2021-05-22 02:01:57,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:57,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:57,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:57,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627408125] [2021-05-22 02:01:57,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627408125] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:57,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:57,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:57,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512270335] [2021-05-22 02:01:57,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:57,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:57,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:57,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:57,199 INFO L87 Difference]: Start difference. First operand 5131 states and 24393 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:57,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:57,340 INFO L93 Difference]: Finished difference Result 10288 states and 45999 transitions. [2021-05-22 02:01:57,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:57,340 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:57,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:57,372 INFO L225 Difference]: With dead ends: 10288 [2021-05-22 02:01:57,373 INFO L226 Difference]: Without dead ends: 9873 [2021-05-22 02:01:57,373 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 221.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:57,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9873 states. [2021-05-22 02:01:57,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9873 to 5179. [2021-05-22 02:01:57,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.744882193897258) internal successors, (24569), 5178 states have internal predecessors, (24569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:57,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24569 transitions. [2021-05-22 02:01:57,665 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24569 transitions. Word has length 29 [2021-05-22 02:01:57,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:57,665 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24569 transitions. [2021-05-22 02:01:57,665 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:57,665 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24569 transitions. [2021-05-22 02:01:57,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:57,674 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:57,674 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:57,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable559 [2021-05-22 02:01:57,674 INFO L430 AbstractCegarLoop]: === Iteration 561 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:57,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:57,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1579366189, now seen corresponding path program 556 times [2021-05-22 02:01:57,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:57,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481734175] [2021-05-22 02:01:57,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:57,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:57,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481734175] [2021-05-22 02:01:57,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481734175] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:57,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:57,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:57,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719615056] [2021-05-22 02:01:57,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:57,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:57,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:57,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:57,797 INFO L87 Difference]: Start difference. First operand 5179 states and 24569 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:57,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:57,904 INFO L93 Difference]: Finished difference Result 10348 states and 46215 transitions. [2021-05-22 02:01:57,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:57,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:57,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:57,932 INFO L225 Difference]: With dead ends: 10348 [2021-05-22 02:01:57,932 INFO L226 Difference]: Without dead ends: 9825 [2021-05-22 02:01:57,932 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:58,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9825 states. [2021-05-22 02:01:58,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9825 to 5131. [2021-05-22 02:01:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.7518518518518515) internal successors, (24377), 5130 states have internal predecessors, (24377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:58,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24377 transitions. [2021-05-22 02:01:58,169 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24377 transitions. Word has length 29 [2021-05-22 02:01:58,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:58,170 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24377 transitions. [2021-05-22 02:01:58,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:58,170 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24377 transitions. [2021-05-22 02:01:58,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:58,179 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:58,179 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:58,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable560 [2021-05-22 02:01:58,179 INFO L430 AbstractCegarLoop]: === Iteration 562 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:58,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:58,179 INFO L82 PathProgramCache]: Analyzing trace with hash -504466681, now seen corresponding path program 557 times [2021-05-22 02:01:58,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:58,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077888353] [2021-05-22 02:01:58,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:58,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:58,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077888353] [2021-05-22 02:01:58,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077888353] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:58,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:58,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:58,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166422608] [2021-05-22 02:01:58,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:58,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:58,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:58,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:58,297 INFO L87 Difference]: Start difference. First operand 5131 states and 24377 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:58,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:58,390 INFO L93 Difference]: Finished difference Result 10288 states and 45983 transitions. [2021-05-22 02:01:58,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:58,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:58,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:58,416 INFO L225 Difference]: With dead ends: 10288 [2021-05-22 02:01:58,416 INFO L226 Difference]: Without dead ends: 9873 [2021-05-22 02:01:58,416 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:58,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9873 states. [2021-05-22 02:01:58,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9873 to 5179. [2021-05-22 02:01:58,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.741792197759753) internal successors, (24553), 5178 states have internal predecessors, (24553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:58,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24553 transitions. [2021-05-22 02:01:58,669 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24553 transitions. Word has length 29 [2021-05-22 02:01:58,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:58,669 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24553 transitions. [2021-05-22 02:01:58,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:58,669 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24553 transitions. [2021-05-22 02:01:58,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:58,678 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:58,679 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:58,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable561 [2021-05-22 02:01:58,679 INFO L430 AbstractCegarLoop]: === Iteration 563 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:58,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:58,679 INFO L82 PathProgramCache]: Analyzing trace with hash 576595945, now seen corresponding path program 558 times [2021-05-22 02:01:58,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:58,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633214957] [2021-05-22 02:01:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:58,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:58,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:58,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633214957] [2021-05-22 02:01:58,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633214957] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:58,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:58,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:58,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132396061] [2021-05-22 02:01:58,809 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:58,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:58,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:58,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:58,809 INFO L87 Difference]: Start difference. First operand 5179 states and 24553 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:58,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:58,924 INFO L93 Difference]: Finished difference Result 10348 states and 46199 transitions. [2021-05-22 02:01:58,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:58,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:58,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:58,951 INFO L225 Difference]: With dead ends: 10348 [2021-05-22 02:01:58,951 INFO L226 Difference]: Without dead ends: 9809 [2021-05-22 02:01:58,951 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:59,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9809 states. [2021-05-22 02:01:59,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9809 to 5115. [2021-05-22 02:01:59,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 4.75576847868596) internal successors, (24321), 5114 states have internal predecessors, (24321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:59,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 24321 transitions. [2021-05-22 02:01:59,229 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 24321 transitions. Word has length 29 [2021-05-22 02:01:59,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:59,230 INFO L482 AbstractCegarLoop]: Abstraction has 5115 states and 24321 transitions. [2021-05-22 02:01:59,230 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:59,230 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 24321 transitions. [2021-05-22 02:01:59,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:59,238 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:59,238 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:59,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable562 [2021-05-22 02:01:59,238 INFO L430 AbstractCegarLoop]: === Iteration 564 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:59,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:59,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1584110645, now seen corresponding path program 559 times [2021-05-22 02:01:59,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:59,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200422097] [2021-05-22 02:01:59,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:59,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:59,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:59,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200422097] [2021-05-22 02:01:59,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200422097] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:59,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:59,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:59,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961554652] [2021-05-22 02:01:59,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:59,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:59,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:59,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:59,335 INFO L87 Difference]: Start difference. First operand 5115 states and 24321 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:59,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:59,457 INFO L93 Difference]: Finished difference Result 10208 states and 45651 transitions. [2021-05-22 02:01:59,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:59,457 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:59,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:59,484 INFO L225 Difference]: With dead ends: 10208 [2021-05-22 02:01:59,484 INFO L226 Difference]: Without dead ends: 9793 [2021-05-22 02:01:59,484 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:01:59,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9793 states. [2021-05-22 02:01:59,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9793 to 5163. [2021-05-22 02:01:59,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 4.748740798140256) internal successors, (24513), 5162 states have internal predecessors, (24513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 24513 transitions. [2021-05-22 02:01:59,717 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 24513 transitions. Word has length 29 [2021-05-22 02:01:59,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:01:59,717 INFO L482 AbstractCegarLoop]: Abstraction has 5163 states and 24513 transitions. [2021-05-22 02:01:59,717 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:59,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 24513 transitions. [2021-05-22 02:01:59,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:01:59,726 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:01:59,726 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:01:59,726 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable563 [2021-05-22 02:01:59,726 INFO L430 AbstractCegarLoop]: === Iteration 565 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:01:59,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:01:59,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1172702649, now seen corresponding path program 560 times [2021-05-22 02:01:59,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:01:59,727 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808281073] [2021-05-22 02:01:59,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:01:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:01:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:01:59,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:01:59,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808281073] [2021-05-22 02:01:59,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808281073] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:01:59,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:01:59,823 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:01:59,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251962697] [2021-05-22 02:01:59,823 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:01:59,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:01:59,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:01:59,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:01:59,823 INFO L87 Difference]: Start difference. First operand 5163 states and 24513 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:01:59,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:01:59,929 INFO L93 Difference]: Finished difference Result 10208 states and 45619 transitions. [2021-05-22 02:01:59,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:01:59,930 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:01:59,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:01:59,955 INFO L225 Difference]: With dead ends: 10208 [2021-05-22 02:01:59,956 INFO L226 Difference]: Without dead ends: 9761 [2021-05-22 02:01:59,956 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 101.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:00,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9761 states. [2021-05-22 02:02:00,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9761 to 5131. [2021-05-22 02:02:00,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.753411306042885) internal successors, (24385), 5130 states have internal predecessors, (24385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:00,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24385 transitions. [2021-05-22 02:02:00,189 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24385 transitions. Word has length 29 [2021-05-22 02:02:00,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:00,189 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24385 transitions. [2021-05-22 02:02:00,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:00,189 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24385 transitions. [2021-05-22 02:02:00,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:00,198 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:00,198 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:00,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable564 [2021-05-22 02:02:00,198 INFO L430 AbstractCegarLoop]: === Iteration 566 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:00,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:00,198 INFO L82 PathProgramCache]: Analyzing trace with hash -2061763637, now seen corresponding path program 561 times [2021-05-22 02:02:00,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:00,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703226436] [2021-05-22 02:02:00,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:00,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:00,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703226436] [2021-05-22 02:02:00,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703226436] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:00,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:00,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:00,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730148918] [2021-05-22 02:02:00,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:00,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:00,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:00,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:00,293 INFO L87 Difference]: Start difference. First operand 5131 states and 24385 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:00,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:00,399 INFO L93 Difference]: Finished difference Result 10280 states and 45967 transitions. [2021-05-22 02:02:00,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:00,399 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:00,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:00,426 INFO L225 Difference]: With dead ends: 10280 [2021-05-22 02:02:00,427 INFO L226 Difference]: Without dead ends: 9865 [2021-05-22 02:02:00,427 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:00,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9865 states. [2021-05-22 02:02:00,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9865 to 5179. [2021-05-22 02:02:00,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.743337195828505) internal successors, (24561), 5178 states have internal predecessors, (24561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:00,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24561 transitions. [2021-05-22 02:02:00,670 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24561 transitions. Word has length 29 [2021-05-22 02:02:00,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:00,670 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24561 transitions. [2021-05-22 02:02:00,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:00,670 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24561 transitions. [2021-05-22 02:02:00,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:00,679 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:00,679 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:00,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable565 [2021-05-22 02:02:00,679 INFO L430 AbstractCegarLoop]: === Iteration 567 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:00,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:00,679 INFO L82 PathProgramCache]: Analyzing trace with hash 2004809517, now seen corresponding path program 562 times [2021-05-22 02:02:00,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:00,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992943971] [2021-05-22 02:02:00,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:00,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:00,774 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:00,774 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992943971] [2021-05-22 02:02:00,774 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992943971] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:00,774 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:00,774 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:00,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540998127] [2021-05-22 02:02:00,774 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:00,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:00,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:00,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:00,774 INFO L87 Difference]: Start difference. First operand 5179 states and 24561 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:00,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:00,885 INFO L93 Difference]: Finished difference Result 10336 states and 46171 transitions. [2021-05-22 02:02:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:00,886 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:00,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:00,911 INFO L225 Difference]: With dead ends: 10336 [2021-05-22 02:02:00,912 INFO L226 Difference]: Without dead ends: 9817 [2021-05-22 02:02:00,912 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:01,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9817 states. [2021-05-22 02:02:01,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9817 to 5131. [2021-05-22 02:02:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.750292397660819) internal successors, (24369), 5130 states have internal predecessors, (24369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:01,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24369 transitions. [2021-05-22 02:02:01,147 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24369 transitions. Word has length 29 [2021-05-22 02:02:01,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:01,147 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24369 transitions. [2021-05-22 02:02:01,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24369 transitions. [2021-05-22 02:02:01,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:01,156 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:01,157 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:01,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable566 [2021-05-22 02:02:01,157 INFO L430 AbstractCegarLoop]: === Iteration 568 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:01,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:01,157 INFO L82 PathProgramCache]: Analyzing trace with hash 536648583, now seen corresponding path program 563 times [2021-05-22 02:02:01,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:01,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777873353] [2021-05-22 02:02:01,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:01,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:01,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777873353] [2021-05-22 02:02:01,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777873353] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:01,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:01,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:01,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609704570] [2021-05-22 02:02:01,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:01,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:01,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:01,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:01,267 INFO L87 Difference]: Start difference. First operand 5131 states and 24369 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:01,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:01,364 INFO L93 Difference]: Finished difference Result 10280 states and 45951 transitions. [2021-05-22 02:02:01,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:01,364 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:01,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:01,392 INFO L225 Difference]: With dead ends: 10280 [2021-05-22 02:02:01,392 INFO L226 Difference]: Without dead ends: 9865 [2021-05-22 02:02:01,392 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:01,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9865 states. [2021-05-22 02:02:01,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9865 to 5179. [2021-05-22 02:02:01,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.740247199691001) internal successors, (24545), 5178 states have internal predecessors, (24545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:01,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24545 transitions. [2021-05-22 02:02:01,633 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24545 transitions. Word has length 29 [2021-05-22 02:02:01,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:01,633 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24545 transitions. [2021-05-22 02:02:01,633 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:01,633 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24545 transitions. [2021-05-22 02:02:01,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:01,642 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:01,642 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:01,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable567 [2021-05-22 02:02:01,642 INFO L430 AbstractCegarLoop]: === Iteration 569 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:01,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:01,643 INFO L82 PathProgramCache]: Analyzing trace with hash 329840617, now seen corresponding path program 564 times [2021-05-22 02:02:01,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:01,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206483326] [2021-05-22 02:02:01,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:01,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:01,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:01,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206483326] [2021-05-22 02:02:01,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206483326] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:01,750 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:01,750 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:01,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724917140] [2021-05-22 02:02:01,750 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:01,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:01,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:01,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:01,750 INFO L87 Difference]: Start difference. First operand 5179 states and 24545 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:01,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:01,862 INFO L93 Difference]: Finished difference Result 10336 states and 46155 transitions. [2021-05-22 02:02:01,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:01,862 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:01,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:01,889 INFO L225 Difference]: With dead ends: 10336 [2021-05-22 02:02:01,889 INFO L226 Difference]: Without dead ends: 9801 [2021-05-22 02:02:01,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:02,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9801 states. [2021-05-22 02:02:02,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9801 to 5115. [2021-05-22 02:02:02,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 4.754204145482988) internal successors, (24313), 5114 states have internal predecessors, (24313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:02,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 24313 transitions. [2021-05-22 02:02:02,128 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 24313 transitions. Word has length 29 [2021-05-22 02:02:02,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:02,128 INFO L482 AbstractCegarLoop]: Abstraction has 5115 states and 24313 transitions. [2021-05-22 02:02:02,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:02,128 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 24313 transitions. [2021-05-22 02:02:02,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:02,137 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:02,137 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:02,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable568 [2021-05-22 02:02:02,137 INFO L430 AbstractCegarLoop]: === Iteration 570 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:02,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:02,138 INFO L82 PathProgramCache]: Analyzing trace with hash -285281239, now seen corresponding path program 565 times [2021-05-22 02:02:02,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:02,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692604029] [2021-05-22 02:02:02,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:02,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:02,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692604029] [2021-05-22 02:02:02,246 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692604029] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:02,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:02,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:02,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003269571] [2021-05-22 02:02:02,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:02,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:02,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:02,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:02,247 INFO L87 Difference]: Start difference. First operand 5115 states and 24313 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:02,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:02,358 INFO L93 Difference]: Finished difference Result 10396 states and 46515 transitions. [2021-05-22 02:02:02,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:02,358 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:02,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:02,385 INFO L225 Difference]: With dead ends: 10396 [2021-05-22 02:02:02,385 INFO L226 Difference]: Without dead ends: 9981 [2021-05-22 02:02:02,385 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:02,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9981 states. [2021-05-22 02:02:02,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9981 to 5187. [2021-05-22 02:02:02,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.7460470497493255) internal successors, (24613), 5186 states have internal predecessors, (24613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24613 transitions. [2021-05-22 02:02:02,618 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24613 transitions. Word has length 29 [2021-05-22 02:02:02,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:02,618 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24613 transitions. [2021-05-22 02:02:02,618 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:02,619 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24613 transitions. [2021-05-22 02:02:02,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:02,627 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:02,627 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:02,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable569 [2021-05-22 02:02:02,627 INFO L430 AbstractCegarLoop]: === Iteration 571 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:02,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:02,628 INFO L82 PathProgramCache]: Analyzing trace with hash 2064336907, now seen corresponding path program 566 times [2021-05-22 02:02:02,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:02,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999019668] [2021-05-22 02:02:02,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:02,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:02,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999019668] [2021-05-22 02:02:02,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999019668] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:02,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:02,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:02,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684605724] [2021-05-22 02:02:02,735 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:02,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:02,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:02,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:02,735 INFO L87 Difference]: Start difference. First operand 5187 states and 24613 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:02,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:02,850 INFO L93 Difference]: Finished difference Result 10456 states and 46731 transitions. [2021-05-22 02:02:02,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:02,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:02,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:02,878 INFO L225 Difference]: With dead ends: 10456 [2021-05-22 02:02:02,878 INFO L226 Difference]: Without dead ends: 9933 [2021-05-22 02:02:02,878 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:03,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9933 states. [2021-05-22 02:02:03,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9933 to 5139. [2021-05-22 02:02:03,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.751459711950175) internal successors, (24413), 5138 states have internal predecessors, (24413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:03,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24413 transitions. [2021-05-22 02:02:03,120 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24413 transitions. Word has length 29 [2021-05-22 02:02:03,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:03,120 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24413 transitions. [2021-05-22 02:02:03,120 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:03,120 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24413 transitions. [2021-05-22 02:02:03,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:03,129 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:03,129 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:03,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable570 [2021-05-22 02:02:03,129 INFO L430 AbstractCegarLoop]: === Iteration 572 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:03,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:03,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1424320523, now seen corresponding path program 567 times [2021-05-22 02:02:03,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:03,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512382485] [2021-05-22 02:02:03,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:03,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:03,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512382485] [2021-05-22 02:02:03,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512382485] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:03,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:03,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:03,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484345700] [2021-05-22 02:02:03,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:03,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:03,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:03,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:03,229 INFO L87 Difference]: Start difference. First operand 5139 states and 24413 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:03,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:03,353 INFO L93 Difference]: Finished difference Result 10392 states and 46479 transitions. [2021-05-22 02:02:03,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:03,353 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:03,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:03,382 INFO L225 Difference]: With dead ends: 10392 [2021-05-22 02:02:03,382 INFO L226 Difference]: Without dead ends: 9977 [2021-05-22 02:02:03,383 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:03,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9977 states. [2021-05-22 02:02:03,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9977 to 5187. [2021-05-22 02:02:03,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.741419205553413) internal successors, (24589), 5186 states have internal predecessors, (24589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:03,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24589 transitions. [2021-05-22 02:02:03,626 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24589 transitions. Word has length 29 [2021-05-22 02:02:03,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:03,626 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24589 transitions. [2021-05-22 02:02:03,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:03,626 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24589 transitions. [2021-05-22 02:02:03,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:03,635 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:03,635 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:03,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable571 [2021-05-22 02:02:03,635 INFO L430 AbstractCegarLoop]: === Iteration 573 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:03,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:03,635 INFO L82 PathProgramCache]: Analyzing trace with hash -832110709, now seen corresponding path program 568 times [2021-05-22 02:02:03,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:03,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89025031] [2021-05-22 02:02:03,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:03,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:03,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:03,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89025031] [2021-05-22 02:02:03,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89025031] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:03,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:03,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:03,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181710089] [2021-05-22 02:02:03,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:03,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:03,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:03,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:03,730 INFO L87 Difference]: Start difference. First operand 5187 states and 24589 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:03,848 INFO L93 Difference]: Finished difference Result 10448 states and 46683 transitions. [2021-05-22 02:02:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:03,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:03,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:03,876 INFO L225 Difference]: With dead ends: 10448 [2021-05-22 02:02:03,876 INFO L226 Difference]: Without dead ends: 9929 [2021-05-22 02:02:03,876 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:03,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9929 states. [2021-05-22 02:02:04,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9929 to 5139. [2021-05-22 02:02:04,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.746788633709615) internal successors, (24389), 5138 states have internal predecessors, (24389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:04,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24389 transitions. [2021-05-22 02:02:04,114 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24389 transitions. Word has length 29 [2021-05-22 02:02:04,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:04,114 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24389 transitions. [2021-05-22 02:02:04,114 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:04,114 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24389 transitions. [2021-05-22 02:02:04,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:04,123 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:04,123 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:04,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable572 [2021-05-22 02:02:04,123 INFO L430 AbstractCegarLoop]: === Iteration 574 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:04,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:04,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1620898541, now seen corresponding path program 569 times [2021-05-22 02:02:04,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:04,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398879682] [2021-05-22 02:02:04,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:04,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:04,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:04,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398879682] [2021-05-22 02:02:04,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398879682] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:04,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:04,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:04,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408165982] [2021-05-22 02:02:04,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:04,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:04,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:04,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:04,221 INFO L87 Difference]: Start difference. First operand 5139 states and 24389 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:04,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:04,340 INFO L93 Difference]: Finished difference Result 10540 states and 47123 transitions. [2021-05-22 02:02:04,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:04,340 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:04,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:04,369 INFO L225 Difference]: With dead ends: 10540 [2021-05-22 02:02:04,369 INFO L226 Difference]: Without dead ends: 10065 [2021-05-22 02:02:04,369 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:04,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10065 states. [2021-05-22 02:02:04,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10065 to 5215. [2021-05-22 02:02:04,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5214 states have (on average 4.732834675872651) internal successors, (24677), 5214 states have internal predecessors, (24677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:04,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 24677 transitions. [2021-05-22 02:02:04,622 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 24677 transitions. Word has length 29 [2021-05-22 02:02:04,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:04,622 INFO L482 AbstractCegarLoop]: Abstraction has 5215 states and 24677 transitions. [2021-05-22 02:02:04,622 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:04,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 24677 transitions. [2021-05-22 02:02:04,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:04,632 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:04,632 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:04,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable573 [2021-05-22 02:02:04,632 INFO L430 AbstractCegarLoop]: === Iteration 575 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:04,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:04,633 INFO L82 PathProgramCache]: Analyzing trace with hash -422438453, now seen corresponding path program 570 times [2021-05-22 02:02:04,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:04,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026724994] [2021-05-22 02:02:04,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:04,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:04,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:04,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026724994] [2021-05-22 02:02:04,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026724994] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:04,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:04,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:04,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475617557] [2021-05-22 02:02:04,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:04,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:04,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:04,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:04,747 INFO L87 Difference]: Start difference. First operand 5215 states and 24677 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:04,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:04,866 INFO L93 Difference]: Finished difference Result 10536 states and 47035 transitions. [2021-05-22 02:02:04,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:04,867 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:04,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:04,896 INFO L225 Difference]: With dead ends: 10536 [2021-05-22 02:02:04,896 INFO L226 Difference]: Without dead ends: 9965 [2021-05-22 02:02:04,896 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:05,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9965 states. [2021-05-22 02:02:05,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9965 to 5115. [2021-05-22 02:02:05,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 4.752639812280016) internal successors, (24305), 5114 states have internal predecessors, (24305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:05,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 24305 transitions. [2021-05-22 02:02:05,131 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 24305 transitions. Word has length 29 [2021-05-22 02:02:05,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:05,132 INFO L482 AbstractCegarLoop]: Abstraction has 5115 states and 24305 transitions. [2021-05-22 02:02:05,132 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:05,132 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 24305 transitions. [2021-05-22 02:02:05,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:05,141 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:05,141 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:05,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable574 [2021-05-22 02:02:05,141 INFO L430 AbstractCegarLoop]: === Iteration 576 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:05,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:05,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1452555557, now seen corresponding path program 571 times [2021-05-22 02:02:05,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:05,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283820950] [2021-05-22 02:02:05,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:05,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:05,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:05,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283820950] [2021-05-22 02:02:05,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283820950] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:05,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:05,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:05,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066848875] [2021-05-22 02:02:05,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:05,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:05,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:05,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:05,256 INFO L87 Difference]: Start difference. First operand 5115 states and 24305 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:05,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:05,373 INFO L93 Difference]: Finished difference Result 10396 states and 46507 transitions. [2021-05-22 02:02:05,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:05,373 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:05,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:05,401 INFO L225 Difference]: With dead ends: 10396 [2021-05-22 02:02:05,401 INFO L226 Difference]: Without dead ends: 9981 [2021-05-22 02:02:05,401 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:05,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9981 states. [2021-05-22 02:02:05,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9981 to 5187. [2021-05-22 02:02:05,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.744504435017355) internal successors, (24605), 5186 states have internal predecessors, (24605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:05,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24605 transitions. [2021-05-22 02:02:05,643 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24605 transitions. Word has length 29 [2021-05-22 02:02:05,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:05,643 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24605 transitions. [2021-05-22 02:02:05,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:05,643 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24605 transitions. [2021-05-22 02:02:05,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:05,653 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:05,653 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:05,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable575 [2021-05-22 02:02:05,653 INFO L430 AbstractCegarLoop]: === Iteration 577 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:05,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:05,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1761349113, now seen corresponding path program 572 times [2021-05-22 02:02:05,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:05,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685341302] [2021-05-22 02:02:05,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:05,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:05,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:05,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685341302] [2021-05-22 02:02:05,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685341302] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:05,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:05,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:05,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734491871] [2021-05-22 02:02:05,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:05,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:05,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:05,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:05,768 INFO L87 Difference]: Start difference. First operand 5187 states and 24605 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:05,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:05,893 INFO L93 Difference]: Finished difference Result 10456 states and 46723 transitions. [2021-05-22 02:02:05,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:05,893 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:05,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:05,921 INFO L225 Difference]: With dead ends: 10456 [2021-05-22 02:02:05,921 INFO L226 Difference]: Without dead ends: 9933 [2021-05-22 02:02:05,921 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:06,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9933 states. [2021-05-22 02:02:06,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9933 to 5139. [2021-05-22 02:02:06,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.749902685869988) internal successors, (24405), 5138 states have internal predecessors, (24405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:06,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24405 transitions. [2021-05-22 02:02:06,172 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24405 transitions. Word has length 29 [2021-05-22 02:02:06,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:06,172 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24405 transitions. [2021-05-22 02:02:06,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:06,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24405 transitions. [2021-05-22 02:02:06,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:06,181 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:06,182 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:06,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable576 [2021-05-22 02:02:06,182 INFO L430 AbstractCegarLoop]: === Iteration 578 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:06,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:06,182 INFO L82 PathProgramCache]: Analyzing trace with hash 971653511, now seen corresponding path program 573 times [2021-05-22 02:02:06,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:06,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695839745] [2021-05-22 02:02:06,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:06,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:06,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:06,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695839745] [2021-05-22 02:02:06,300 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695839745] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:06,300 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:06,300 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:06,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685311032] [2021-05-22 02:02:06,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:06,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:06,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:06,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:06,300 INFO L87 Difference]: Start difference. First operand 5139 states and 24405 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:06,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:06,400 INFO L93 Difference]: Finished difference Result 10392 states and 46471 transitions. [2021-05-22 02:02:06,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:06,400 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:06,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:06,427 INFO L225 Difference]: With dead ends: 10392 [2021-05-22 02:02:06,427 INFO L226 Difference]: Without dead ends: 9977 [2021-05-22 02:02:06,427 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:06,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9977 states. [2021-05-22 02:02:06,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9977 to 5187. [2021-05-22 02:02:06,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.739876590821442) internal successors, (24581), 5186 states have internal predecessors, (24581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:06,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24581 transitions. [2021-05-22 02:02:06,669 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24581 transitions. Word has length 29 [2021-05-22 02:02:06,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:06,669 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24581 transitions. [2021-05-22 02:02:06,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:06,670 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24581 transitions. [2021-05-22 02:02:06,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:06,679 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:06,679 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:06,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable577 [2021-05-22 02:02:06,679 INFO L430 AbstractCegarLoop]: === Iteration 579 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:06,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:06,679 INFO L82 PathProgramCache]: Analyzing trace with hash -716592761, now seen corresponding path program 574 times [2021-05-22 02:02:06,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:06,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022156420] [2021-05-22 02:02:06,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:06,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:06,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022156420] [2021-05-22 02:02:06,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022156420] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:06,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:06,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:06,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571653739] [2021-05-22 02:02:06,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:06,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:06,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:06,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:06,797 INFO L87 Difference]: Start difference. First operand 5187 states and 24581 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:06,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:06,903 INFO L93 Difference]: Finished difference Result 10448 states and 46675 transitions. [2021-05-22 02:02:06,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:06,903 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:06,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:06,929 INFO L225 Difference]: With dead ends: 10448 [2021-05-22 02:02:06,930 INFO L226 Difference]: Without dead ends: 9929 [2021-05-22 02:02:06,930 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:07,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9929 states. [2021-05-22 02:02:07,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9929 to 5139. [2021-05-22 02:02:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.745231607629428) internal successors, (24381), 5138 states have internal predecessors, (24381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:07,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24381 transitions. [2021-05-22 02:02:07,167 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24381 transitions. Word has length 29 [2021-05-22 02:02:07,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:07,167 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24381 transitions. [2021-05-22 02:02:07,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:07,167 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24381 transitions. [2021-05-22 02:02:07,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:07,177 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:07,177 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:07,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable578 [2021-05-22 02:02:07,177 INFO L430 AbstractCegarLoop]: === Iteration 580 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:07,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:07,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1359658473, now seen corresponding path program 575 times [2021-05-22 02:02:07,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:07,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468970078] [2021-05-22 02:02:07,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:07,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:07,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:07,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468970078] [2021-05-22 02:02:07,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468970078] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:07,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:07,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:07,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14236420] [2021-05-22 02:02:07,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:07,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:07,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:07,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:07,283 INFO L87 Difference]: Start difference. First operand 5139 states and 24381 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:07,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:07,391 INFO L93 Difference]: Finished difference Result 10540 states and 47115 transitions. [2021-05-22 02:02:07,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:07,391 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:07,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:07,417 INFO L225 Difference]: With dead ends: 10540 [2021-05-22 02:02:07,418 INFO L226 Difference]: Without dead ends: 10065 [2021-05-22 02:02:07,418 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:07,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10065 states. [2021-05-22 02:02:07,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10065 to 5215. [2021-05-22 02:02:07,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5214 states have (on average 4.731300345224396) internal successors, (24669), 5214 states have internal predecessors, (24669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:07,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 24669 transitions. [2021-05-22 02:02:07,652 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 24669 transitions. Word has length 29 [2021-05-22 02:02:07,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:07,652 INFO L482 AbstractCegarLoop]: Abstraction has 5215 states and 24669 transitions. [2021-05-22 02:02:07,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:07,652 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 24669 transitions. [2021-05-22 02:02:07,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:07,661 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:07,661 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:07,661 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable579 [2021-05-22 02:02:07,661 INFO L430 AbstractCegarLoop]: === Iteration 581 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:07,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:07,661 INFO L82 PathProgramCache]: Analyzing trace with hash 512861511, now seen corresponding path program 576 times [2021-05-22 02:02:07,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:07,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375927945] [2021-05-22 02:02:07,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:07,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:07,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375927945] [2021-05-22 02:02:07,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375927945] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:07,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:07,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:07,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721125970] [2021-05-22 02:02:07,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:07,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:07,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:07,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:07,767 INFO L87 Difference]: Start difference. First operand 5215 states and 24669 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:07,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:07,877 INFO L93 Difference]: Finished difference Result 10536 states and 47027 transitions. [2021-05-22 02:02:07,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:07,877 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:07,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:07,904 INFO L225 Difference]: With dead ends: 10536 [2021-05-22 02:02:07,904 INFO L226 Difference]: Without dead ends: 9957 [2021-05-22 02:02:07,904 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:08,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9957 states. [2021-05-22 02:02:08,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9957 to 5107. [2021-05-22 02:02:08,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5107 states, 5106 states have (on average 4.755385820603212) internal successors, (24281), 5106 states have internal predecessors, (24281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:08,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 24281 transitions. [2021-05-22 02:02:08,142 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 24281 transitions. Word has length 29 [2021-05-22 02:02:08,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:08,142 INFO L482 AbstractCegarLoop]: Abstraction has 5107 states and 24281 transitions. [2021-05-22 02:02:08,143 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:08,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 24281 transitions. [2021-05-22 02:02:08,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:08,152 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:08,152 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:08,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable580 [2021-05-22 02:02:08,152 INFO L430 AbstractCegarLoop]: === Iteration 582 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:08,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:08,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1432828325, now seen corresponding path program 577 times [2021-05-22 02:02:08,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:08,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853360432] [2021-05-22 02:02:08,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:08,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:08,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:08,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853360432] [2021-05-22 02:02:08,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853360432] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:08,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:08,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:08,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204930793] [2021-05-22 02:02:08,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:08,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:08,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:08,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:08,275 INFO L87 Difference]: Start difference. First operand 5107 states and 24281 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:08,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:08,381 INFO L93 Difference]: Finished difference Result 10638 states and 47650 transitions. [2021-05-22 02:02:08,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:08,382 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:08,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:08,410 INFO L225 Difference]: With dead ends: 10638 [2021-05-22 02:02:08,410 INFO L226 Difference]: Without dead ends: 10161 [2021-05-22 02:02:08,410 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:08,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10161 states. [2021-05-22 02:02:08,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10161 to 5191. [2021-05-22 02:02:08,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.7493256262042385) internal successors, (24649), 5190 states have internal predecessors, (24649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:08,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24649 transitions. [2021-05-22 02:02:08,646 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24649 transitions. Word has length 29 [2021-05-22 02:02:08,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:08,646 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24649 transitions. [2021-05-22 02:02:08,646 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:08,646 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24649 transitions. [2021-05-22 02:02:08,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:08,655 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:08,655 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:08,655 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable581 [2021-05-22 02:02:08,655 INFO L430 AbstractCegarLoop]: === Iteration 583 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:08,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:08,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1781076345, now seen corresponding path program 578 times [2021-05-22 02:02:08,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:08,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19405306] [2021-05-22 02:02:08,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:08,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:08,773 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:08,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19405306] [2021-05-22 02:02:08,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19405306] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:08,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:08,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:08,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374953298] [2021-05-22 02:02:08,773 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:08,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:08,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:08,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:08,774 INFO L87 Difference]: Start difference. First operand 5191 states and 24649 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:08,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:08,872 INFO L93 Difference]: Finished difference Result 10576 states and 47333 transitions. [2021-05-22 02:02:08,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:08,872 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:08,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:08,899 INFO L225 Difference]: With dead ends: 10576 [2021-05-22 02:02:08,900 INFO L226 Difference]: Without dead ends: 10113 [2021-05-22 02:02:08,900 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:09,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10113 states. [2021-05-22 02:02:09,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10113 to 5143. [2021-05-22 02:02:09,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.754764683002723) internal successors, (24449), 5142 states have internal predecessors, (24449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:09,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24449 transitions. [2021-05-22 02:02:09,137 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24449 transitions. Word has length 29 [2021-05-22 02:02:09,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:09,137 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24449 transitions. [2021-05-22 02:02:09,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:09,137 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24449 transitions. [2021-05-22 02:02:09,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:09,146 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:09,146 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:09,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable582 [2021-05-22 02:02:09,146 INFO L430 AbstractCegarLoop]: === Iteration 584 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:09,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:09,146 INFO L82 PathProgramCache]: Analyzing trace with hash 951926279, now seen corresponding path program 579 times [2021-05-22 02:02:09,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:09,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99241305] [2021-05-22 02:02:09,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:09,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:09,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:09,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99241305] [2021-05-22 02:02:09,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99241305] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:09,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:09,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:09,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439388962] [2021-05-22 02:02:09,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:09,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:09,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:09,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:09,257 INFO L87 Difference]: Start difference. First operand 5143 states and 24449 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:09,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:09,364 INFO L93 Difference]: Finished difference Result 10728 states and 48037 transitions. [2021-05-22 02:02:09,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:09,364 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:09,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:09,393 INFO L225 Difference]: With dead ends: 10728 [2021-05-22 02:02:09,393 INFO L226 Difference]: Without dead ends: 10251 [2021-05-22 02:02:09,393 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:09,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10251 states. [2021-05-22 02:02:09,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10251 to 5221. [2021-05-22 02:02:09,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5221 states, 5220 states have (on average 4.739846743295019) internal successors, (24742), 5220 states have internal predecessors, (24742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:09,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 24742 transitions. [2021-05-22 02:02:09,712 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 24742 transitions. Word has length 29 [2021-05-22 02:02:09,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:09,712 INFO L482 AbstractCegarLoop]: Abstraction has 5221 states and 24742 transitions. [2021-05-22 02:02:09,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:09,713 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 24742 transitions. [2021-05-22 02:02:09,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:09,722 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:09,722 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:09,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable583 [2021-05-22 02:02:09,722 INFO L430 AbstractCegarLoop]: === Iteration 585 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:09,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:09,722 INFO L82 PathProgramCache]: Analyzing trace with hash -736319993, now seen corresponding path program 580 times [2021-05-22 02:02:09,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:09,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960168824] [2021-05-22 02:02:09,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:09,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:09,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960168824] [2021-05-22 02:02:09,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960168824] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:09,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:09,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:09,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067810554] [2021-05-22 02:02:09,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:09,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:09,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:09,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:09,831 INFO L87 Difference]: Start difference. First operand 5221 states and 24742 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:09,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:09,941 INFO L93 Difference]: Finished difference Result 10726 states and 47954 transitions. [2021-05-22 02:02:09,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:09,941 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:09,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:09,969 INFO L225 Difference]: With dead ends: 10726 [2021-05-22 02:02:09,969 INFO L226 Difference]: Without dead ends: 10173 [2021-05-22 02:02:09,969 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:10,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10173 states. [2021-05-22 02:02:10,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10173 to 5143. [2021-05-22 02:02:10,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.750097238428627) internal successors, (24425), 5142 states have internal predecessors, (24425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:10,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24425 transitions. [2021-05-22 02:02:10,217 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24425 transitions. Word has length 29 [2021-05-22 02:02:10,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:10,218 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24425 transitions. [2021-05-22 02:02:10,218 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:10,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24425 transitions. [2021-05-22 02:02:10,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:10,229 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:10,229 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:10,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable584 [2021-05-22 02:02:10,229 INFO L430 AbstractCegarLoop]: === Iteration 586 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:10,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:10,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1339931241, now seen corresponding path program 581 times [2021-05-22 02:02:10,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:10,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204241000] [2021-05-22 02:02:10,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:10,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:10,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:10,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204241000] [2021-05-22 02:02:10,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204241000] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:10,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:10,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:10,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009736776] [2021-05-22 02:02:10,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:10,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:10,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:10,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:10,350 INFO L87 Difference]: Start difference. First operand 5143 states and 24425 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:10,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:10,439 INFO L93 Difference]: Finished difference Result 10574 states and 47328 transitions. [2021-05-22 02:02:10,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:10,439 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:10,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:10,466 INFO L225 Difference]: With dead ends: 10574 [2021-05-22 02:02:10,467 INFO L226 Difference]: Without dead ends: 10159 [2021-05-22 02:02:10,467 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:10,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10159 states. [2021-05-22 02:02:10,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10159 to 5191. [2021-05-22 02:02:10,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.740077071290944) internal successors, (24601), 5190 states have internal predecessors, (24601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:10,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24601 transitions. [2021-05-22 02:02:10,706 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24601 transitions. Word has length 29 [2021-05-22 02:02:10,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:10,706 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24601 transitions. [2021-05-22 02:02:10,706 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:10,706 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24601 transitions. [2021-05-22 02:02:10,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:10,715 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:10,715 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:10,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable585 [2021-05-22 02:02:10,716 INFO L430 AbstractCegarLoop]: === Iteration 587 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:10,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:10,716 INFO L82 PathProgramCache]: Analyzing trace with hash 493134279, now seen corresponding path program 582 times [2021-05-22 02:02:10,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:10,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675457324] [2021-05-22 02:02:10,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:10,833 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:10,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675457324] [2021-05-22 02:02:10,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675457324] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:10,833 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:10,833 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:10,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648711433] [2021-05-22 02:02:10,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:10,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:10,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:10,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:10,833 INFO L87 Difference]: Start difference. First operand 5191 states and 24601 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:10,941 INFO L93 Difference]: Finished difference Result 10634 states and 47544 transitions. [2021-05-22 02:02:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:10,942 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:10,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:10,969 INFO L225 Difference]: With dead ends: 10634 [2021-05-22 02:02:10,970 INFO L226 Difference]: Without dead ends: 10087 [2021-05-22 02:02:10,970 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:11,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10087 states. [2021-05-22 02:02:11,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10087 to 5119. [2021-05-22 02:02:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 5118 states have (on average 4.755177803829621) internal successors, (24337), 5118 states have internal predecessors, (24337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:11,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 24337 transitions. [2021-05-22 02:02:11,225 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 24337 transitions. Word has length 29 [2021-05-22 02:02:11,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:11,225 INFO L482 AbstractCegarLoop]: Abstraction has 5119 states and 24337 transitions. [2021-05-22 02:02:11,225 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:11,225 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 24337 transitions. [2021-05-22 02:02:11,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:11,234 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:11,234 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:11,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable586 [2021-05-22 02:02:11,234 INFO L430 AbstractCegarLoop]: === Iteration 588 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:11,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:11,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1152537209, now seen corresponding path program 583 times [2021-05-22 02:02:11,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:11,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210313591] [2021-05-22 02:02:11,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:11,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:11,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:11,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210313591] [2021-05-22 02:02:11,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210313591] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:11,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:11,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:11,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372549084] [2021-05-22 02:02:11,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:11,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:11,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:11,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:11,352 INFO L87 Difference]: Start difference. First operand 5119 states and 24337 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:11,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:11,474 INFO L93 Difference]: Finished difference Result 10632 states and 47619 transitions. [2021-05-22 02:02:11,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:11,474 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:11,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:11,502 INFO L225 Difference]: With dead ends: 10632 [2021-05-22 02:02:11,502 INFO L226 Difference]: Without dead ends: 10155 [2021-05-22 02:02:11,502 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:11,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10155 states. [2021-05-22 02:02:11,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10155 to 5191. [2021-05-22 02:02:11,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.747013487475916) internal successors, (24637), 5190 states have internal predecessors, (24637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:11,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24637 transitions. [2021-05-22 02:02:11,745 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24637 transitions. Word has length 29 [2021-05-22 02:02:11,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:11,745 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24637 transitions. [2021-05-22 02:02:11,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:11,745 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24637 transitions. [2021-05-22 02:02:11,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:11,754 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:11,754 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:11,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable587 [2021-05-22 02:02:11,754 INFO L430 AbstractCegarLoop]: === Iteration 589 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:11,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:11,754 INFO L82 PathProgramCache]: Analyzing trace with hash -71474583, now seen corresponding path program 584 times [2021-05-22 02:02:11,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:11,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669930418] [2021-05-22 02:02:11,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:11,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:11,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:11,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669930418] [2021-05-22 02:02:11,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669930418] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:11,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:11,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:11,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978409727] [2021-05-22 02:02:11,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:11,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:11,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:11,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:11,873 INFO L87 Difference]: Start difference. First operand 5191 states and 24637 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:11,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:11,984 INFO L93 Difference]: Finished difference Result 10570 states and 47302 transitions. [2021-05-22 02:02:11,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:11,984 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:11,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:12,011 INFO L225 Difference]: With dead ends: 10570 [2021-05-22 02:02:12,012 INFO L226 Difference]: Without dead ends: 10107 [2021-05-22 02:02:12,012 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:12,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10107 states. [2021-05-22 02:02:12,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10107 to 5143. [2021-05-22 02:02:12,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.7524309607156745) internal successors, (24437), 5142 states have internal predecessors, (24437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:12,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24437 transitions. [2021-05-22 02:02:12,262 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24437 transitions. Word has length 29 [2021-05-22 02:02:12,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:12,262 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24437 transitions. [2021-05-22 02:02:12,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:12,262 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24437 transitions. [2021-05-22 02:02:12,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:12,271 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:12,271 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:12,271 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable588 [2021-05-22 02:02:12,271 INFO L430 AbstractCegarLoop]: === Iteration 590 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:12,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:12,271 INFO L82 PathProgramCache]: Analyzing trace with hash -59566713, now seen corresponding path program 585 times [2021-05-22 02:02:12,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:12,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649136686] [2021-05-22 02:02:12,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:12,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:12,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:12,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649136686] [2021-05-22 02:02:12,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649136686] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:12,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:12,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:12,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685044732] [2021-05-22 02:02:12,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:12,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:12,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:12,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:12,380 INFO L87 Difference]: Start difference. First operand 5143 states and 24437 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:12,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:12,492 INFO L93 Difference]: Finished difference Result 10716 states and 47987 transitions. [2021-05-22 02:02:12,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:12,492 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:12,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:12,519 INFO L225 Difference]: With dead ends: 10716 [2021-05-22 02:02:12,519 INFO L226 Difference]: Without dead ends: 10239 [2021-05-22 02:02:12,520 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:12,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10239 states. [2021-05-22 02:02:12,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10239 to 5219. [2021-05-22 02:02:12,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5219 states, 5218 states have (on average 4.738405519356075) internal successors, (24725), 5218 states have internal predecessors, (24725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:12,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 24725 transitions. [2021-05-22 02:02:12,757 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 24725 transitions. Word has length 29 [2021-05-22 02:02:12,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:12,757 INFO L482 AbstractCegarLoop]: Abstraction has 5219 states and 24725 transitions. [2021-05-22 02:02:12,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:12,757 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 24725 transitions. [2021-05-22 02:02:12,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:12,766 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:12,766 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:12,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable589 [2021-05-22 02:02:12,766 INFO L430 AbstractCegarLoop]: === Iteration 591 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:12,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:12,767 INFO L82 PathProgramCache]: Analyzing trace with hash -9998969, now seen corresponding path program 586 times [2021-05-22 02:02:12,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:12,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091242948] [2021-05-22 02:02:12,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:12,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:12,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091242948] [2021-05-22 02:02:12,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091242948] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:12,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:12,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:12,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461634883] [2021-05-22 02:02:12,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:12,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:12,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:12,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:12,874 INFO L87 Difference]: Start difference. First operand 5219 states and 24725 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:12,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:12,984 INFO L93 Difference]: Finished difference Result 10710 states and 47894 transitions. [2021-05-22 02:02:12,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:12,984 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:12,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:13,012 INFO L225 Difference]: With dead ends: 10710 [2021-05-22 02:02:13,012 INFO L226 Difference]: Without dead ends: 10163 [2021-05-22 02:02:13,013 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:13,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2021-05-22 02:02:13,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 5143. [2021-05-22 02:02:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.747763516141579) internal successors, (24413), 5142 states have internal predecessors, (24413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:13,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24413 transitions. [2021-05-22 02:02:13,252 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24413 transitions. Word has length 29 [2021-05-22 02:02:13,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:13,252 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24413 transitions. [2021-05-22 02:02:13,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:13,252 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24413 transitions. [2021-05-22 02:02:13,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:13,261 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:13,261 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:13,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable590 [2021-05-22 02:02:13,261 INFO L430 AbstractCegarLoop]: === Iteration 592 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:13,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:13,261 INFO L82 PathProgramCache]: Analyzing trace with hash 328438249, now seen corresponding path program 587 times [2021-05-22 02:02:13,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:13,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469784183] [2021-05-22 02:02:13,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:13,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:13,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469784183] [2021-05-22 02:02:13,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469784183] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:13,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:13,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:13,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145754876] [2021-05-22 02:02:13,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:13,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:13,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:13,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:13,383 INFO L87 Difference]: Start difference. First operand 5143 states and 24413 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:13,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:13,479 INFO L93 Difference]: Finished difference Result 10564 states and 47285 transitions. [2021-05-22 02:02:13,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:13,479 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:13,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:13,508 INFO L225 Difference]: With dead ends: 10564 [2021-05-22 02:02:13,508 INFO L226 Difference]: Without dead ends: 10149 [2021-05-22 02:02:13,509 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:13,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10149 states. [2021-05-22 02:02:13,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10149 to 5191. [2021-05-22 02:02:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.73776493256262) internal successors, (24589), 5190 states have internal predecessors, (24589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:13,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24589 transitions. [2021-05-22 02:02:13,754 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24589 transitions. Word has length 29 [2021-05-22 02:02:13,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:13,754 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24589 transitions. [2021-05-22 02:02:13,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:13,754 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24589 transitions. [2021-05-22 02:02:13,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:13,763 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:13,763 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:13,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable591 [2021-05-22 02:02:13,763 INFO L430 AbstractCegarLoop]: === Iteration 593 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:13,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:13,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1787641401, now seen corresponding path program 588 times [2021-05-22 02:02:13,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:13,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577714011] [2021-05-22 02:02:13,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:13,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:13,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577714011] [2021-05-22 02:02:13,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577714011] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:13,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:13,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:13,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187483878] [2021-05-22 02:02:13,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:13,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:13,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:13,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:13,884 INFO L87 Difference]: Start difference. First operand 5191 states and 24589 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:13,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:13,992 INFO L93 Difference]: Finished difference Result 10620 states and 47489 transitions. [2021-05-22 02:02:13,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:13,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:13,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:14,020 INFO L225 Difference]: With dead ends: 10620 [2021-05-22 02:02:14,020 INFO L226 Difference]: Without dead ends: 10077 [2021-05-22 02:02:14,020 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:14,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10077 states. [2021-05-22 02:02:14,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10077 to 5119. [2021-05-22 02:02:14,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 5118 states have (on average 4.75283313794451) internal successors, (24325), 5118 states have internal predecessors, (24325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:14,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 24325 transitions. [2021-05-22 02:02:14,258 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 24325 transitions. Word has length 29 [2021-05-22 02:02:14,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:14,258 INFO L482 AbstractCegarLoop]: Abstraction has 5119 states and 24325 transitions. [2021-05-22 02:02:14,258 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:14,258 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 24325 transitions. [2021-05-22 02:02:14,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:14,267 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:14,267 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:14,267 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable592 [2021-05-22 02:02:14,267 INFO L430 AbstractCegarLoop]: === Iteration 594 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:14,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:14,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1941923479, now seen corresponding path program 589 times [2021-05-22 02:02:14,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:14,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043326500] [2021-05-22 02:02:14,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:14,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:14,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:14,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043326500] [2021-05-22 02:02:14,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043326500] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:14,368 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:14,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:14,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635999403] [2021-05-22 02:02:14,369 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:14,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:14,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:14,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:14,369 INFO L87 Difference]: Start difference. First operand 5119 states and 24325 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:14,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:14,475 INFO L93 Difference]: Finished difference Result 10854 states and 48646 transitions. [2021-05-22 02:02:14,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:14,476 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:14,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:14,504 INFO L225 Difference]: With dead ends: 10854 [2021-05-22 02:02:14,505 INFO L226 Difference]: Without dead ends: 10377 [2021-05-22 02:02:14,505 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:14,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10377 states. [2021-05-22 02:02:14,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10377 to 5235. [2021-05-22 02:02:14,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5235 states, 5234 states have (on average 4.741880015284677) internal successors, (24819), 5234 states have internal predecessors, (24819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:14,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5235 states to 5235 states and 24819 transitions. [2021-05-22 02:02:14,750 INFO L78 Accepts]: Start accepts. Automaton has 5235 states and 24819 transitions. Word has length 29 [2021-05-22 02:02:14,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:14,750 INFO L482 AbstractCegarLoop]: Abstraction has 5235 states and 24819 transitions. [2021-05-22 02:02:14,750 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:14,750 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 24819 transitions. [2021-05-22 02:02:14,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:14,759 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:14,759 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:14,759 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable593 [2021-05-22 02:02:14,759 INFO L430 AbstractCegarLoop]: === Iteration 595 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:14,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:14,759 INFO L82 PathProgramCache]: Analyzing trace with hash 664797545, now seen corresponding path program 590 times [2021-05-22 02:02:14,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:14,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323344289] [2021-05-22 02:02:14,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:14,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:14,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:14,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323344289] [2021-05-22 02:02:14,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323344289] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:14,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:14,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:14,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594123607] [2021-05-22 02:02:14,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:14,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:14,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:14,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:14,862 INFO L87 Difference]: Start difference. First operand 5235 states and 24819 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:14,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:14,969 INFO L93 Difference]: Finished difference Result 10852 states and 48563 transitions. [2021-05-22 02:02:14,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:14,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:14,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:14,997 INFO L225 Difference]: With dead ends: 10852 [2021-05-22 02:02:14,997 INFO L226 Difference]: Without dead ends: 10299 [2021-05-22 02:02:14,997 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:15,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10299 states. [2021-05-22 02:02:15,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10299 to 5157. [2021-05-22 02:02:15,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 4.749418153607448) internal successors, (24488), 5156 states have internal predecessors, (24488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:15,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 24488 transitions. [2021-05-22 02:02:15,247 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 24488 transitions. Word has length 29 [2021-05-22 02:02:15,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:15,247 INFO L482 AbstractCegarLoop]: Abstraction has 5157 states and 24488 transitions. [2021-05-22 02:02:15,248 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:15,248 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 24488 transitions. [2021-05-22 02:02:15,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:15,257 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:15,257 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:15,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable594 [2021-05-22 02:02:15,257 INFO L430 AbstractCegarLoop]: === Iteration 596 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:15,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:15,257 INFO L82 PathProgramCache]: Analyzing trace with hash 329982279, now seen corresponding path program 591 times [2021-05-22 02:02:15,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:15,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179902094] [2021-05-22 02:02:15,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:15,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:15,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:15,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179902094] [2021-05-22 02:02:15,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179902094] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:15,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:15,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:15,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798708074] [2021-05-22 02:02:15,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:15,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:15,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:15,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:15,360 INFO L87 Difference]: Start difference. First operand 5157 states and 24488 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:15,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:15,472 INFO L93 Difference]: Finished difference Result 10848 states and 48589 transitions. [2021-05-22 02:02:15,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:15,473 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:15,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:15,501 INFO L225 Difference]: With dead ends: 10848 [2021-05-22 02:02:15,501 INFO L226 Difference]: Without dead ends: 10371 [2021-05-22 02:02:15,501 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:15,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10371 states. [2021-05-22 02:02:15,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10371 to 5233. [2021-05-22 02:02:15,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 4.735474006116208) internal successors, (24776), 5232 states have internal predecessors, (24776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:15,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 24776 transitions. [2021-05-22 02:02:15,742 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 24776 transitions. Word has length 29 [2021-05-22 02:02:15,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:15,742 INFO L482 AbstractCegarLoop]: Abstraction has 5233 states and 24776 transitions. [2021-05-22 02:02:15,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:15,742 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 24776 transitions. [2021-05-22 02:02:15,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:15,751 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:15,751 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:15,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable595 [2021-05-22 02:02:15,752 INFO L430 AbstractCegarLoop]: === Iteration 597 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:15,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:15,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1699602793, now seen corresponding path program 592 times [2021-05-22 02:02:15,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:15,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561849808] [2021-05-22 02:02:15,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:15,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:15,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:15,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561849808] [2021-05-22 02:02:15,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561849808] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:15,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:15,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:15,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303845776] [2021-05-22 02:02:15,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:15,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:15,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:15,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:15,853 INFO L87 Difference]: Start difference. First operand 5233 states and 24776 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:15,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:15,969 INFO L93 Difference]: Finished difference Result 10842 states and 48496 transitions. [2021-05-22 02:02:15,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:15,970 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:15,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:15,997 INFO L225 Difference]: With dead ends: 10842 [2021-05-22 02:02:15,997 INFO L226 Difference]: Without dead ends: 10295 [2021-05-22 02:02:15,997 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:16,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10295 states. [2021-05-22 02:02:16,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10295 to 5157. [2021-05-22 02:02:16,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 4.742048099301784) internal successors, (24450), 5156 states have internal predecessors, (24450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:16,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 24450 transitions. [2021-05-22 02:02:16,242 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 24450 transitions. Word has length 29 [2021-05-22 02:02:16,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:16,242 INFO L482 AbstractCegarLoop]: Abstraction has 5157 states and 24450 transitions. [2021-05-22 02:02:16,242 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:16,242 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 24450 transitions. [2021-05-22 02:02:16,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:16,251 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:16,251 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:16,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable596 [2021-05-22 02:02:16,251 INFO L430 AbstractCegarLoop]: === Iteration 598 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:16,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:16,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1054759273, now seen corresponding path program 593 times [2021-05-22 02:02:16,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:16,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6762760] [2021-05-22 02:02:16,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:16,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:16,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6762760] [2021-05-22 02:02:16,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6762760] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:16,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:16,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:16,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428876489] [2021-05-22 02:02:16,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:16,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:16,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:16,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:16,356 INFO L87 Difference]: Start difference. First operand 5157 states and 24450 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:16,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:16,467 INFO L93 Difference]: Finished difference Result 10844 states and 48541 transitions. [2021-05-22 02:02:16,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:16,468 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:16,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:16,496 INFO L225 Difference]: With dead ends: 10844 [2021-05-22 02:02:16,496 INFO L226 Difference]: Without dead ends: 10369 [2021-05-22 02:02:16,497 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:16,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10369 states. [2021-05-22 02:02:16,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10369 to 5233. [2021-05-22 02:02:16,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 4.728211009174312) internal successors, (24738), 5232 states have internal predecessors, (24738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:16,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 24738 transitions. [2021-05-22 02:02:16,752 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 24738 transitions. Word has length 29 [2021-05-22 02:02:16,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:16,752 INFO L482 AbstractCegarLoop]: Abstraction has 5233 states and 24738 transitions. [2021-05-22 02:02:16,752 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:16,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 24738 transitions. [2021-05-22 02:02:16,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:16,762 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:16,762 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:16,762 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable597 [2021-05-22 02:02:16,762 INFO L430 AbstractCegarLoop]: === Iteration 599 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:16,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:16,762 INFO L82 PathProgramCache]: Analyzing trace with hash 207962311, now seen corresponding path program 594 times [2021-05-22 02:02:16,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:16,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747135863] [2021-05-22 02:02:16,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:16,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:16,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747135863] [2021-05-22 02:02:16,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747135863] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:16,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:16,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:16,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539072578] [2021-05-22 02:02:16,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:16,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:16,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:16,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:16,865 INFO L87 Difference]: Start difference. First operand 5233 states and 24738 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:16,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:16,978 INFO L93 Difference]: Finished difference Result 10840 states and 48453 transitions. [2021-05-22 02:02:16,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:16,978 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:16,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:17,007 INFO L225 Difference]: With dead ends: 10840 [2021-05-22 02:02:17,007 INFO L226 Difference]: Without dead ends: 10255 [2021-05-22 02:02:17,008 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:17,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10255 states. [2021-05-22 02:02:17,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10255 to 5119. [2021-05-22 02:02:17,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 5118 states have (on average 4.7504884720593985) internal successors, (24313), 5118 states have internal predecessors, (24313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:17,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 24313 transitions. [2021-05-22 02:02:17,256 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 24313 transitions. Word has length 29 [2021-05-22 02:02:17,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:17,256 INFO L482 AbstractCegarLoop]: Abstraction has 5119 states and 24313 transitions. [2021-05-22 02:02:17,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:17,256 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 24313 transitions. [2021-05-22 02:02:17,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:17,265 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:17,265 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:17,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable598 [2021-05-22 02:02:17,265 INFO L430 AbstractCegarLoop]: === Iteration 600 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:17,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:17,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1862402741, now seen corresponding path program 595 times [2021-05-22 02:02:17,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:17,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046822310] [2021-05-22 02:02:17,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:17,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:17,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:17,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046822310] [2021-05-22 02:02:17,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046822310] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:17,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:17,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:17,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692434665] [2021-05-22 02:02:17,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:17,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:17,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:17,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:17,389 INFO L87 Difference]: Start difference. First operand 5119 states and 24313 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:17,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:17,481 INFO L93 Difference]: Finished difference Result 10566 states and 47316 transitions. [2021-05-22 02:02:17,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:17,481 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:17,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:17,511 INFO L225 Difference]: With dead ends: 10566 [2021-05-22 02:02:17,511 INFO L226 Difference]: Without dead ends: 10151 [2021-05-22 02:02:17,511 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:17,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10151 states. [2021-05-22 02:02:17,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10151 to 5191. [2021-05-22 02:02:17,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.742389210019268) internal successors, (24613), 5190 states have internal predecessors, (24613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:17,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24613 transitions. [2021-05-22 02:02:17,757 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24613 transitions. Word has length 29 [2021-05-22 02:02:17,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:17,757 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24613 transitions. [2021-05-22 02:02:17,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:17,757 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24613 transitions. [2021-05-22 02:02:17,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:17,766 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:17,766 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:17,766 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable599 [2021-05-22 02:02:17,766 INFO L430 AbstractCegarLoop]: === Iteration 601 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:17,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:17,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1585767593, now seen corresponding path program 596 times [2021-05-22 02:02:17,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:17,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719863073] [2021-05-22 02:02:17,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:17,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:17,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719863073] [2021-05-22 02:02:17,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719863073] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:17,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:17,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:17,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703026363] [2021-05-22 02:02:17,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:17,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:17,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:17,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:17,904 INFO L87 Difference]: Start difference. First operand 5191 states and 24613 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:18,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:18,039 INFO L93 Difference]: Finished difference Result 10626 states and 47532 transitions. [2021-05-22 02:02:18,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:18,039 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:18,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:18,066 INFO L225 Difference]: With dead ends: 10626 [2021-05-22 02:02:18,066 INFO L226 Difference]: Without dead ends: 10103 [2021-05-22 02:02:18,067 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 164.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:18,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10103 states. [2021-05-22 02:02:18,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10103 to 5143. [2021-05-22 02:02:18,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.747763516141579) internal successors, (24413), 5142 states have internal predecessors, (24413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:18,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24413 transitions. [2021-05-22 02:02:18,309 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24413 transitions. Word has length 29 [2021-05-22 02:02:18,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:18,309 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24413 transitions. [2021-05-22 02:02:18,309 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:18,309 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24413 transitions. [2021-05-22 02:02:18,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:18,318 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:18,318 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:18,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable600 [2021-05-22 02:02:18,318 INFO L430 AbstractCegarLoop]: === Iteration 602 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:18,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:18,318 INFO L82 PathProgramCache]: Analyzing trace with hash 409503017, now seen corresponding path program 597 times [2021-05-22 02:02:18,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:18,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049101780] [2021-05-22 02:02:18,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:18,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:18,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:18,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049101780] [2021-05-22 02:02:18,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049101780] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:18,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:18,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:18,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773396762] [2021-05-22 02:02:18,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:18,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:18,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:18,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:18,454 INFO L87 Difference]: Start difference. First operand 5143 states and 24413 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:18,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:18,571 INFO L93 Difference]: Finished difference Result 10562 states and 47280 transitions. [2021-05-22 02:02:18,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:18,571 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:18,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:18,598 INFO L225 Difference]: With dead ends: 10562 [2021-05-22 02:02:18,599 INFO L226 Difference]: Without dead ends: 10147 [2021-05-22 02:02:18,599 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:18,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10147 states. [2021-05-22 02:02:18,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10147 to 5191. [2021-05-22 02:02:18,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.73776493256262) internal successors, (24589), 5190 states have internal predecessors, (24589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:18,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24589 transitions. [2021-05-22 02:02:18,845 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24589 transitions. Word has length 29 [2021-05-22 02:02:18,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:18,845 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24589 transitions. [2021-05-22 02:02:18,845 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:18,845 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24589 transitions. [2021-05-22 02:02:18,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:18,855 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:18,855 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:18,855 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable601 [2021-05-22 02:02:18,855 INFO L430 AbstractCegarLoop]: === Iteration 603 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:18,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:18,855 INFO L82 PathProgramCache]: Analyzing trace with hash -386523863, now seen corresponding path program 598 times [2021-05-22 02:02:18,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:18,855 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158413766] [2021-05-22 02:02:18,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:18,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:18,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158413766] [2021-05-22 02:02:18,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158413766] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:18,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:18,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:18,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163280660] [2021-05-22 02:02:18,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:18,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:18,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:18,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:18,977 INFO L87 Difference]: Start difference. First operand 5191 states and 24589 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:19,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:19,104 INFO L93 Difference]: Finished difference Result 10618 states and 47484 transitions. [2021-05-22 02:02:19,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:19,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:19,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:19,132 INFO L225 Difference]: With dead ends: 10618 [2021-05-22 02:02:19,132 INFO L226 Difference]: Without dead ends: 10099 [2021-05-22 02:02:19,132 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:19,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10099 states. [2021-05-22 02:02:19,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10099 to 5143. [2021-05-22 02:02:19,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.743096071567483) internal successors, (24389), 5142 states have internal predecessors, (24389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:19,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24389 transitions. [2021-05-22 02:02:19,370 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24389 transitions. Word has length 29 [2021-05-22 02:02:19,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:19,370 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24389 transitions. [2021-05-22 02:02:19,370 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:19,371 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24389 transitions. [2021-05-22 02:02:19,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:19,379 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:19,380 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:19,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable602 [2021-05-22 02:02:19,380 INFO L430 AbstractCegarLoop]: === Iteration 604 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:19,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:19,380 INFO L82 PathProgramCache]: Analyzing trace with hash -447245049, now seen corresponding path program 599 times [2021-05-22 02:02:19,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:19,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247731837] [2021-05-22 02:02:19,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:19,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:19,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:19,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247731837] [2021-05-22 02:02:19,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247731837] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:19,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:19,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:19,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079439279] [2021-05-22 02:02:19,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:19,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:19,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:19,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:19,493 INFO L87 Difference]: Start difference. First operand 5143 states and 24389 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:19,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:19,599 INFO L93 Difference]: Finished difference Result 10710 states and 47924 transitions. [2021-05-22 02:02:19,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:19,600 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:19,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:19,627 INFO L225 Difference]: With dead ends: 10710 [2021-05-22 02:02:19,627 INFO L226 Difference]: Without dead ends: 10235 [2021-05-22 02:02:19,627 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:19,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10235 states. [2021-05-22 02:02:19,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10235 to 5219. [2021-05-22 02:02:19,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5219 states, 5218 states have (on average 4.729206592564201) internal successors, (24677), 5218 states have internal predecessors, (24677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:19,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 24677 transitions. [2021-05-22 02:02:19,875 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 24677 transitions. Word has length 29 [2021-05-22 02:02:19,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:19,875 INFO L482 AbstractCegarLoop]: Abstraction has 5219 states and 24677 transitions. [2021-05-22 02:02:19,876 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:19,876 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 24677 transitions. [2021-05-22 02:02:19,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:19,885 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:19,885 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:19,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable603 [2021-05-22 02:02:19,885 INFO L430 AbstractCegarLoop]: === Iteration 605 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:19,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:19,885 INFO L82 PathProgramCache]: Analyzing trace with hash -928147095, now seen corresponding path program 600 times [2021-05-22 02:02:19,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:19,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261112089] [2021-05-22 02:02:19,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:19,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:19,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261112089] [2021-05-22 02:02:19,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261112089] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:19,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:19,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:19,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610288866] [2021-05-22 02:02:19,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:19,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:19,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:19,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:19,998 INFO L87 Difference]: Start difference. First operand 5219 states and 24677 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:20,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:20,118 INFO L93 Difference]: Finished difference Result 10706 states and 47836 transitions. [2021-05-22 02:02:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:20,118 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:20,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:20,146 INFO L225 Difference]: With dead ends: 10706 [2021-05-22 02:02:20,146 INFO L226 Difference]: Without dead ends: 10119 [2021-05-22 02:02:20,146 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:20,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10119 states. [2021-05-22 02:02:20,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10119 to 5103. [2021-05-22 02:02:20,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5103 states, 5102 states have (on average 4.757154057232458) internal successors, (24271), 5102 states have internal predecessors, (24271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:20,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5103 states to 5103 states and 24271 transitions. [2021-05-22 02:02:20,435 INFO L78 Accepts]: Start accepts. Automaton has 5103 states and 24271 transitions. Word has length 29 [2021-05-22 02:02:20,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:20,435 INFO L482 AbstractCegarLoop]: Abstraction has 5103 states and 24271 transitions. [2021-05-22 02:02:20,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:20,435 INFO L276 IsEmpty]: Start isEmpty. Operand 5103 states and 24271 transitions. [2021-05-22 02:02:20,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:20,444 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:20,444 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:20,444 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable604 [2021-05-22 02:02:20,444 INFO L430 AbstractCegarLoop]: === Iteration 606 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:20,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:20,444 INFO L82 PathProgramCache]: Analyzing trace with hash -262363389, now seen corresponding path program 601 times [2021-05-22 02:02:20,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:20,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808431900] [2021-05-22 02:02:20,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:20,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:20,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808431900] [2021-05-22 02:02:20,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808431900] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:20,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:20,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:20,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414154361] [2021-05-22 02:02:20,556 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:20,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:20,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:20,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:20,557 INFO L87 Difference]: Start difference. First operand 5103 states and 24271 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:20,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:20,651 INFO L93 Difference]: Finished difference Result 12182 states and 54407 transitions. [2021-05-22 02:02:20,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:20,651 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:20,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:20,682 INFO L225 Difference]: With dead ends: 12182 [2021-05-22 02:02:20,683 INFO L226 Difference]: Without dead ends: 11640 [2021-05-22 02:02:20,683 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:20,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11640 states. [2021-05-22 02:02:20,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11640 to 5360. [2021-05-22 02:02:20,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5360 states, 5359 states have (on average 4.729053927971637) internal successors, (25343), 5359 states have internal predecessors, (25343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:20,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5360 states to 5360 states and 25343 transitions. [2021-05-22 02:02:20,941 INFO L78 Accepts]: Start accepts. Automaton has 5360 states and 25343 transitions. Word has length 29 [2021-05-22 02:02:20,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:20,941 INFO L482 AbstractCegarLoop]: Abstraction has 5360 states and 25343 transitions. [2021-05-22 02:02:20,941 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:20,941 INFO L276 IsEmpty]: Start isEmpty. Operand 5360 states and 25343 transitions. [2021-05-22 02:02:20,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:20,951 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:20,951 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:20,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable605 [2021-05-22 02:02:20,951 INFO L430 AbstractCegarLoop]: === Iteration 607 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:20,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:20,952 INFO L82 PathProgramCache]: Analyzing trace with hash 818699237, now seen corresponding path program 602 times [2021-05-22 02:02:20,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:20,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305042651] [2021-05-22 02:02:20,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:21,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:21,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305042651] [2021-05-22 02:02:21,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305042651] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:21,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:21,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:21,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841247736] [2021-05-22 02:02:21,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:21,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:21,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:21,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:21,063 INFO L87 Difference]: Start difference. First operand 5360 states and 25343 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:21,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:21,174 INFO L93 Difference]: Finished difference Result 12117 states and 54038 transitions. [2021-05-22 02:02:21,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:21,175 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:21,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:21,206 INFO L225 Difference]: With dead ends: 12117 [2021-05-22 02:02:21,206 INFO L226 Difference]: Without dead ends: 11497 [2021-05-22 02:02:21,206 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:21,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11497 states. [2021-05-22 02:02:21,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11497 to 5217. [2021-05-22 02:02:21,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 4.748466257668712) internal successors, (24768), 5216 states have internal predecessors, (24768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:21,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 24768 transitions. [2021-05-22 02:02:21,463 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 24768 transitions. Word has length 29 [2021-05-22 02:02:21,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:21,463 INFO L482 AbstractCegarLoop]: Abstraction has 5217 states and 24768 transitions. [2021-05-22 02:02:21,463 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:21,463 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 24768 transitions. [2021-05-22 02:02:21,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:21,473 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:21,473 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:21,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable606 [2021-05-22 02:02:21,473 INFO L430 AbstractCegarLoop]: === Iteration 608 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:21,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:21,473 INFO L82 PathProgramCache]: Analyzing trace with hash -743265435, now seen corresponding path program 603 times [2021-05-22 02:02:21,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:21,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002550442] [2021-05-22 02:02:21,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:21,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:21,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:21,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002550442] [2021-05-22 02:02:21,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002550442] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:21,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:21,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:21,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727746456] [2021-05-22 02:02:21,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:21,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:21,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:21,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:21,592 INFO L87 Difference]: Start difference. First operand 5217 states and 24768 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:21,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:21,691 INFO L93 Difference]: Finished difference Result 12057 states and 53820 transitions. [2021-05-22 02:02:21,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:21,691 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:21,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:21,724 INFO L225 Difference]: With dead ends: 12057 [2021-05-22 02:02:21,724 INFO L226 Difference]: Without dead ends: 11515 [2021-05-22 02:02:21,724 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:21,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11515 states. [2021-05-22 02:02:21,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11515 to 5297. [2021-05-22 02:02:21,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5297 states, 5296 states have (on average 4.731117824773414) internal successors, (25056), 5296 states have internal predecessors, (25056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 25056 transitions. [2021-05-22 02:02:21,977 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 25056 transitions. Word has length 29 [2021-05-22 02:02:21,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:21,977 INFO L482 AbstractCegarLoop]: Abstraction has 5297 states and 25056 transitions. [2021-05-22 02:02:21,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:21,977 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 25056 transitions. [2021-05-22 02:02:21,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:21,986 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:21,986 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:21,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable607 [2021-05-22 02:02:21,986 INFO L430 AbstractCegarLoop]: === Iteration 609 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:21,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:21,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1863455589, now seen corresponding path program 604 times [2021-05-22 02:02:21,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:21,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782424625] [2021-05-22 02:02:21,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:22,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:22,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782424625] [2021-05-22 02:02:22,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782424625] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:22,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:22,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:22,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400560678] [2021-05-22 02:02:22,104 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:22,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:22,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:22,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:22,105 INFO L87 Difference]: Start difference. First operand 5297 states and 25056 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:22,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:22,202 INFO L93 Difference]: Finished difference Result 11930 states and 53213 transitions. [2021-05-22 02:02:22,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:22,203 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:22,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:22,232 INFO L225 Difference]: With dead ends: 11930 [2021-05-22 02:02:22,232 INFO L226 Difference]: Without dead ends: 11435 [2021-05-22 02:02:22,232 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:22,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11435 states. [2021-05-22 02:02:22,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11435 to 5217. [2021-05-22 02:02:22,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 4.74079754601227) internal successors, (24728), 5216 states have internal predecessors, (24728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:22,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 24728 transitions. [2021-05-22 02:02:22,489 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 24728 transitions. Word has length 29 [2021-05-22 02:02:22,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:22,489 INFO L482 AbstractCegarLoop]: Abstraction has 5217 states and 24728 transitions. [2021-05-22 02:02:22,490 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:22,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 24728 transitions. [2021-05-22 02:02:22,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:22,499 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:22,499 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:22,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable608 [2021-05-22 02:02:22,499 INFO L430 AbstractCegarLoop]: === Iteration 610 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:22,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:22,499 INFO L82 PathProgramCache]: Analyzing trace with hash -355260473, now seen corresponding path program 605 times [2021-05-22 02:02:22,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:22,499 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775879786] [2021-05-22 02:02:22,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:22,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:22,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:22,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775879786] [2021-05-22 02:02:22,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775879786] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:22,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:22,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:22,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732165575] [2021-05-22 02:02:22,617 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:22,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:22,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:22,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:22,618 INFO L87 Difference]: Start difference. First operand 5217 states and 24728 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:22,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:22,727 INFO L93 Difference]: Finished difference Result 11895 states and 53120 transitions. [2021-05-22 02:02:22,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:22,727 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:22,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:22,757 INFO L225 Difference]: With dead ends: 11895 [2021-05-22 02:02:22,758 INFO L226 Difference]: Without dead ends: 11418 [2021-05-22 02:02:22,758 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:22,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11418 states. [2021-05-22 02:02:22,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11418 to 5265. [2021-05-22 02:02:22,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 5264 states have (on average 4.731003039513678) internal successors, (24904), 5264 states have internal predecessors, (24904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 24904 transitions. [2021-05-22 02:02:23,008 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 24904 transitions. Word has length 29 [2021-05-22 02:02:23,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:23,008 INFO L482 AbstractCegarLoop]: Abstraction has 5265 states and 24904 transitions. [2021-05-22 02:02:23,008 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:23,008 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 24904 transitions. [2021-05-22 02:02:23,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:23,018 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:23,018 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:23,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable609 [2021-05-22 02:02:23,018 INFO L430 AbstractCegarLoop]: === Iteration 611 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:23,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:23,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1202057435, now seen corresponding path program 606 times [2021-05-22 02:02:23,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:23,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078177678] [2021-05-22 02:02:23,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:23,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:23,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:23,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078177678] [2021-05-22 02:02:23,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078177678] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:23,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:23,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:23,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912696791] [2021-05-22 02:02:23,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:23,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:23,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:23,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:23,140 INFO L87 Difference]: Start difference. First operand 5265 states and 24904 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:23,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:23,238 INFO L93 Difference]: Finished difference Result 11833 states and 52803 transitions. [2021-05-22 02:02:23,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:23,239 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:23,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:23,269 INFO L225 Difference]: With dead ends: 11833 [2021-05-22 02:02:23,269 INFO L226 Difference]: Without dead ends: 11314 [2021-05-22 02:02:23,269 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:23,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11314 states. [2021-05-22 02:02:23,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11314 to 5161. [2021-05-22 02:02:23,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.753488372093023) internal successors, (24528), 5160 states have internal predecessors, (24528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:23,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24528 transitions. [2021-05-22 02:02:23,518 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24528 transitions. Word has length 29 [2021-05-22 02:02:23,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:23,518 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24528 transitions. [2021-05-22 02:02:23,518 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:23,518 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24528 transitions. [2021-05-22 02:02:23,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:23,527 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:23,527 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:23,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable610 [2021-05-22 02:02:23,527 INFO L430 AbstractCegarLoop]: === Iteration 612 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:23,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:23,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1447238373, now seen corresponding path program 607 times [2021-05-22 02:02:23,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:23,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820760994] [2021-05-22 02:02:23,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:23,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:23,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:23,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820760994] [2021-05-22 02:02:23,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820760994] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:23,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:23,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:23,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348793140] [2021-05-22 02:02:23,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:23,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:23,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:23,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:23,636 INFO L87 Difference]: Start difference. First operand 5161 states and 24528 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:23,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:23,735 INFO L93 Difference]: Finished difference Result 12333 states and 55066 transitions. [2021-05-22 02:02:23,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:23,736 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:23,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:23,768 INFO L225 Difference]: With dead ends: 12333 [2021-05-22 02:02:23,768 INFO L226 Difference]: Without dead ends: 11791 [2021-05-22 02:02:23,768 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11791 states. [2021-05-22 02:02:24,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11791 to 5391. [2021-05-22 02:02:24,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5391 states, 5390 states have (on average 4.7205936920222635) internal successors, (25444), 5390 states have internal predecessors, (25444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5391 states to 5391 states and 25444 transitions. [2021-05-22 02:02:24,039 INFO L78 Accepts]: Start accepts. Automaton has 5391 states and 25444 transitions. Word has length 29 [2021-05-22 02:02:24,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:24,039 INFO L482 AbstractCegarLoop]: Abstraction has 5391 states and 25444 transitions. [2021-05-22 02:02:24,039 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:24,039 INFO L276 IsEmpty]: Start isEmpty. Operand 5391 states and 25444 transitions. [2021-05-22 02:02:24,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:24,050 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:24,050 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:24,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable611 [2021-05-22 02:02:24,050 INFO L430 AbstractCegarLoop]: === Iteration 613 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:24,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:24,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1766666297, now seen corresponding path program 608 times [2021-05-22 02:02:24,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:24,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922931355] [2021-05-22 02:02:24,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:24,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:24,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:24,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922931355] [2021-05-22 02:02:24,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922931355] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:24,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:24,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:24,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454947252] [2021-05-22 02:02:24,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:24,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:24,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:24,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:24,159 INFO L87 Difference]: Start difference. First operand 5391 states and 25444 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:24,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:24,278 INFO L93 Difference]: Finished difference Result 12268 states and 54697 transitions. [2021-05-22 02:02:24,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:24,278 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:24,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:24,310 INFO L225 Difference]: With dead ends: 12268 [2021-05-22 02:02:24,310 INFO L226 Difference]: Without dead ends: 11648 [2021-05-22 02:02:24,310 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:24,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11648 states. [2021-05-22 02:02:24,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11648 to 5248. [2021-05-22 02:02:24,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5248 states, 5247 states have (on average 4.736801982085001) internal successors, (24854), 5247 states have internal predecessors, (24854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:24,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5248 states to 5248 states and 24854 transitions. [2021-05-22 02:02:24,567 INFO L78 Accepts]: Start accepts. Automaton has 5248 states and 24854 transitions. Word has length 29 [2021-05-22 02:02:24,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:24,567 INFO L482 AbstractCegarLoop]: Abstraction has 5248 states and 24854 transitions. [2021-05-22 02:02:24,567 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:24,567 INFO L276 IsEmpty]: Start isEmpty. Operand 5248 states and 24854 transitions. [2021-05-22 02:02:24,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:24,576 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:24,576 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:24,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable612 [2021-05-22 02:02:24,576 INFO L430 AbstractCegarLoop]: === Iteration 614 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:24,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:24,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1754758427, now seen corresponding path program 609 times [2021-05-22 02:02:24,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:24,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019735955] [2021-05-22 02:02:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:24,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:24,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:24,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019735955] [2021-05-22 02:02:24,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019735955] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:24,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:24,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:24,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124424376] [2021-05-22 02:02:24,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:24,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:24,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:24,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:24,684 INFO L87 Difference]: Start difference. First operand 5248 states and 24854 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:24,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:24,799 INFO L93 Difference]: Finished difference Result 12298 states and 54875 transitions. [2021-05-22 02:02:24,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:24,800 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:24,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:24,832 INFO L225 Difference]: With dead ends: 12298 [2021-05-22 02:02:24,832 INFO L226 Difference]: Without dead ends: 11756 [2021-05-22 02:02:24,832 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:24,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11756 states. [2021-05-22 02:02:25,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11756 to 5358. [2021-05-22 02:02:25,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5358 states, 5357 states have (on average 4.71513907037521) internal successors, (25259), 5357 states have internal predecessors, (25259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:25,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5358 states to 5358 states and 25259 transitions. [2021-05-22 02:02:25,100 INFO L78 Accepts]: Start accepts. Automaton has 5358 states and 25259 transitions. Word has length 29 [2021-05-22 02:02:25,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:25,101 INFO L482 AbstractCegarLoop]: Abstraction has 5358 states and 25259 transitions. [2021-05-22 02:02:25,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:25,101 INFO L276 IsEmpty]: Start isEmpty. Operand 5358 states and 25259 transitions. [2021-05-22 02:02:25,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:25,110 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:25,110 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:25,110 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable613 [2021-05-22 02:02:25,110 INFO L430 AbstractCegarLoop]: === Iteration 615 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:25,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:25,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1705190683, now seen corresponding path program 610 times [2021-05-22 02:02:25,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:25,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749210871] [2021-05-22 02:02:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:25,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:25,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:25,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749210871] [2021-05-22 02:02:25,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749210871] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:25,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:25,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:25,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199244253] [2021-05-22 02:02:25,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:25,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:25,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:25,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:25,218 INFO L87 Difference]: Start difference. First operand 5358 states and 25259 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:25,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:25,352 INFO L93 Difference]: Finished difference Result 12231 states and 54502 transitions. [2021-05-22 02:02:25,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:25,353 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:25,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:25,383 INFO L225 Difference]: With dead ends: 12231 [2021-05-22 02:02:25,384 INFO L226 Difference]: Without dead ends: 11646 [2021-05-22 02:02:25,384 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:25,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11646 states. [2021-05-22 02:02:25,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11646 to 5248. [2021-05-22 02:02:25,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5248 states, 5247 states have (on average 4.7263198017915) internal successors, (24799), 5247 states have internal predecessors, (24799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:25,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5248 states to 5248 states and 24799 transitions. [2021-05-22 02:02:25,637 INFO L78 Accepts]: Start accepts. Automaton has 5248 states and 24799 transitions. Word has length 29 [2021-05-22 02:02:25,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:25,637 INFO L482 AbstractCegarLoop]: Abstraction has 5248 states and 24799 transitions. [2021-05-22 02:02:25,637 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:25,637 INFO L276 IsEmpty]: Start isEmpty. Operand 5248 states and 24799 transitions. [2021-05-22 02:02:25,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:25,646 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:25,646 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:25,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable614 [2021-05-22 02:02:25,646 INFO L430 AbstractCegarLoop]: === Iteration 616 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:25,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:25,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1366753465, now seen corresponding path program 611 times [2021-05-22 02:02:25,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:25,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431204996] [2021-05-22 02:02:25,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:25,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:25,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:25,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431204996] [2021-05-22 02:02:25,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431204996] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:25,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:25,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:25,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072127965] [2021-05-22 02:02:25,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:25,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:25,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:25,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:25,754 INFO L87 Difference]: Start difference. First operand 5248 states and 24799 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:25,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:25,866 INFO L93 Difference]: Finished difference Result 12136 states and 54160 transitions. [2021-05-22 02:02:25,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:25,867 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:25,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:25,898 INFO L225 Difference]: With dead ends: 12136 [2021-05-22 02:02:25,898 INFO L226 Difference]: Without dead ends: 11659 [2021-05-22 02:02:25,898 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:26,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11659 states. [2021-05-22 02:02:26,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11659 to 5326. [2021-05-22 02:02:26,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5326 states, 5325 states have (on average 4.712112676056338) internal successors, (25092), 5325 states have internal predecessors, (25092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5326 states to 5326 states and 25092 transitions. [2021-05-22 02:02:26,158 INFO L78 Accepts]: Start accepts. Automaton has 5326 states and 25092 transitions. Word has length 29 [2021-05-22 02:02:26,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:26,158 INFO L482 AbstractCegarLoop]: Abstraction has 5326 states and 25092 transitions. [2021-05-22 02:02:26,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:26,158 INFO L276 IsEmpty]: Start isEmpty. Operand 5326 states and 25092 transitions. [2021-05-22 02:02:26,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:26,168 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:26,168 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:26,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable615 [2021-05-22 02:02:26,168 INFO L430 AbstractCegarLoop]: === Iteration 617 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:26,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:26,168 INFO L82 PathProgramCache]: Analyzing trace with hash 812134181, now seen corresponding path program 612 times [2021-05-22 02:02:26,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:26,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060128451] [2021-05-22 02:02:26,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:26,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:26,276 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:26,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060128451] [2021-05-22 02:02:26,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060128451] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:26,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:26,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:26,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095048752] [2021-05-22 02:02:26,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:26,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:26,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:26,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:26,277 INFO L87 Difference]: Start difference. First operand 5326 states and 25092 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:26,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:26,394 INFO L93 Difference]: Finished difference Result 12134 states and 54077 transitions. [2021-05-22 02:02:26,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:26,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:26,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:26,425 INFO L225 Difference]: With dead ends: 12134 [2021-05-22 02:02:26,425 INFO L226 Difference]: Without dead ends: 11494 [2021-05-22 02:02:26,426 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:26,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11494 states. [2021-05-22 02:02:26,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11494 to 5161. [2021-05-22 02:02:26,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.746511627906977) internal successors, (24492), 5160 states have internal predecessors, (24492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:26,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24492 transitions. [2021-05-22 02:02:26,678 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24492 transitions. Word has length 29 [2021-05-22 02:02:26,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:26,678 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24492 transitions. [2021-05-22 02:02:26,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:26,678 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24492 transitions. [2021-05-22 02:02:26,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:26,687 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:26,687 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:26,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable616 [2021-05-22 02:02:26,687 INFO L430 AbstractCegarLoop]: === Iteration 618 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:26,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:26,688 INFO L82 PathProgramCache]: Analyzing trace with hash 657852103, now seen corresponding path program 613 times [2021-05-22 02:02:26,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:26,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201138152] [2021-05-22 02:02:26,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:26,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:26,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:26,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201138152] [2021-05-22 02:02:26,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201138152] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:26,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:26,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:26,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105078760] [2021-05-22 02:02:26,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:26,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:26,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:26,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:26,809 INFO L87 Difference]: Start difference. First operand 5161 states and 24492 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:26,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:26,906 INFO L93 Difference]: Finished difference Result 12006 states and 53628 transitions. [2021-05-22 02:02:26,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:26,906 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:26,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:26,938 INFO L225 Difference]: With dead ends: 12006 [2021-05-22 02:02:26,938 INFO L226 Difference]: Without dead ends: 11464 [2021-05-22 02:02:26,938 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:27,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11464 states. [2021-05-22 02:02:27,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11464 to 5281. [2021-05-22 02:02:27,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 5280 states have (on average 4.7318181818181815) internal successors, (24984), 5280 states have internal predecessors, (24984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:27,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 24984 transitions. [2021-05-22 02:02:27,192 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 24984 transitions. Word has length 29 [2021-05-22 02:02:27,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:27,192 INFO L482 AbstractCegarLoop]: Abstraction has 5281 states and 24984 transitions. [2021-05-22 02:02:27,192 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:27,192 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 24984 transitions. [2021-05-22 02:02:27,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:27,202 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:27,202 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:27,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable617 [2021-05-22 02:02:27,202 INFO L430 AbstractCegarLoop]: === Iteration 619 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:27,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:27,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1030394169, now seen corresponding path program 614 times [2021-05-22 02:02:27,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:27,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84945679] [2021-05-22 02:02:27,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:27,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:27,329 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:27,329 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84945679] [2021-05-22 02:02:27,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84945679] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:27,329 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:27,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:27,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372992522] [2021-05-22 02:02:27,329 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:27,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:27,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:27,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:27,329 INFO L87 Difference]: Start difference. First operand 5281 states and 24984 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:27,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:27,424 INFO L93 Difference]: Finished difference Result 11879 states and 53021 transitions. [2021-05-22 02:02:27,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:27,425 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:27,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:27,456 INFO L225 Difference]: With dead ends: 11879 [2021-05-22 02:02:27,456 INFO L226 Difference]: Without dead ends: 11384 [2021-05-22 02:02:27,456 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:27,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11384 states. [2021-05-22 02:02:27,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11384 to 5201. [2021-05-22 02:02:27,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 4.741538461538462) internal successors, (24656), 5200 states have internal predecessors, (24656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:27,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 24656 transitions. [2021-05-22 02:02:27,706 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 24656 transitions. Word has length 29 [2021-05-22 02:02:27,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:27,707 INFO L482 AbstractCegarLoop]: Abstraction has 5201 states and 24656 transitions. [2021-05-22 02:02:27,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:27,707 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 24656 transitions. [2021-05-22 02:02:27,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:27,716 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:27,716 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:27,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable618 [2021-05-22 02:02:27,716 INFO L430 AbstractCegarLoop]: === Iteration 620 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:27,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:27,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1365209435, now seen corresponding path program 615 times [2021-05-22 02:02:27,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:27,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149927424] [2021-05-22 02:02:27,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:27,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:27,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:27,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149927424] [2021-05-22 02:02:27,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149927424] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:27,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:27,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:27,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306128828] [2021-05-22 02:02:27,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:27,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:27,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:27,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:27,832 INFO L87 Difference]: Start difference. First operand 5201 states and 24656 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:27,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:27,934 INFO L93 Difference]: Finished difference Result 12096 states and 53999 transitions. [2021-05-22 02:02:27,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:27,934 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:27,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:27,964 INFO L225 Difference]: With dead ends: 12096 [2021-05-22 02:02:27,964 INFO L226 Difference]: Without dead ends: 11554 [2021-05-22 02:02:27,964 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:28,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11554 states. [2021-05-22 02:02:28,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11554 to 5311. [2021-05-22 02:02:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5311 states, 5310 states have (on average 4.719585687382297) internal successors, (25061), 5310 states have internal predecessors, (25061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:28,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5311 states to 5311 states and 25061 transitions. [2021-05-22 02:02:28,215 INFO L78 Accepts]: Start accepts. Automaton has 5311 states and 25061 transitions. Word has length 29 [2021-05-22 02:02:28,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:28,216 INFO L482 AbstractCegarLoop]: Abstraction has 5311 states and 25061 transitions. [2021-05-22 02:02:28,216 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:28,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5311 states and 25061 transitions. [2021-05-22 02:02:28,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:28,225 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:28,225 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:28,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable619 [2021-05-22 02:02:28,225 INFO L430 AbstractCegarLoop]: === Iteration 621 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:28,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:28,225 INFO L82 PathProgramCache]: Analyzing trace with hash 4411079, now seen corresponding path program 616 times [2021-05-22 02:02:28,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:28,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936042509] [2021-05-22 02:02:28,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:28,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:28,361 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:28,361 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936042509] [2021-05-22 02:02:28,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936042509] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:28,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:28,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:28,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941571595] [2021-05-22 02:02:28,361 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:28,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:28,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:28,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:28,362 INFO L87 Difference]: Start difference. First operand 5311 states and 25061 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:28,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:28,478 INFO L93 Difference]: Finished difference Result 12029 states and 53626 transitions. [2021-05-22 02:02:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:28,478 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:28,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:28,509 INFO L225 Difference]: With dead ends: 12029 [2021-05-22 02:02:28,509 INFO L226 Difference]: Without dead ends: 11444 [2021-05-22 02:02:28,509 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 155.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:28,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11444 states. [2021-05-22 02:02:28,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11444 to 5201. [2021-05-22 02:02:28,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 4.733846153846154) internal successors, (24616), 5200 states have internal predecessors, (24616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:28,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 24616 transitions. [2021-05-22 02:02:28,764 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 24616 transitions. Word has length 29 [2021-05-22 02:02:28,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:28,764 INFO L482 AbstractCegarLoop]: Abstraction has 5201 states and 24616 transitions. [2021-05-22 02:02:28,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:28,765 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 24616 transitions. [2021-05-22 02:02:28,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:28,774 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:28,774 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:28,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable620 [2021-05-22 02:02:28,774 INFO L430 AbstractCegarLoop]: === Iteration 622 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:28,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:28,774 INFO L82 PathProgramCache]: Analyzing trace with hash -640432441, now seen corresponding path program 617 times [2021-05-22 02:02:28,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:28,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844888898] [2021-05-22 02:02:28,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:28,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:28,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844888898] [2021-05-22 02:02:28,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844888898] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:28,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:28,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:28,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143374412] [2021-05-22 02:02:28,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:28,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:28,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:28,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:28,898 INFO L87 Difference]: Start difference. First operand 5201 states and 24616 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:28,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:28,997 INFO L93 Difference]: Finished difference Result 11780 states and 52614 transitions. [2021-05-22 02:02:28,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:28,997 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:28,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:29,028 INFO L225 Difference]: With dead ends: 11780 [2021-05-22 02:02:29,028 INFO L226 Difference]: Without dead ends: 11365 [2021-05-22 02:02:29,028 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:29,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11365 states. [2021-05-22 02:02:29,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11365 to 5249. [2021-05-22 02:02:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5249 states, 5248 states have (on average 4.724085365853658) internal successors, (24792), 5248 states have internal predecessors, (24792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:29,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 24792 transitions. [2021-05-22 02:02:29,286 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 24792 transitions. Word has length 29 [2021-05-22 02:02:29,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:29,286 INFO L482 AbstractCegarLoop]: Abstraction has 5249 states and 24792 transitions. [2021-05-22 02:02:29,286 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:29,286 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 24792 transitions. [2021-05-22 02:02:29,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:29,295 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:29,295 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:29,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable621 [2021-05-22 02:02:29,295 INFO L430 AbstractCegarLoop]: === Iteration 623 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:29,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:29,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1487229403, now seen corresponding path program 618 times [2021-05-22 02:02:29,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:29,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938226839] [2021-05-22 02:02:29,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:29,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:29,418 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:29,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938226839] [2021-05-22 02:02:29,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938226839] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:29,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:29,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:29,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858320751] [2021-05-22 02:02:29,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:29,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:29,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:29,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:29,419 INFO L87 Difference]: Start difference. First operand 5249 states and 24792 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:29,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:29,539 INFO L93 Difference]: Finished difference Result 11840 states and 52830 transitions. [2021-05-22 02:02:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:29,540 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:29,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:29,572 INFO L225 Difference]: With dead ends: 11840 [2021-05-22 02:02:29,572 INFO L226 Difference]: Without dead ends: 11277 [2021-05-22 02:02:29,572 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:29,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11277 states. [2021-05-22 02:02:29,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11277 to 5161. [2021-05-22 02:02:29,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.742635658914729) internal successors, (24472), 5160 states have internal predecessors, (24472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:29,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24472 transitions. [2021-05-22 02:02:29,828 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24472 transitions. Word has length 29 [2021-05-22 02:02:29,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:29,828 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24472 transitions. [2021-05-22 02:02:29,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:29,828 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24472 transitions. [2021-05-22 02:02:29,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:29,837 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:29,837 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:29,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable622 [2021-05-22 02:02:29,837 INFO L430 AbstractCegarLoop]: === Iteration 624 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:29,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:29,837 INFO L82 PathProgramCache]: Analyzing trace with hash 737372841, now seen corresponding path program 619 times [2021-05-22 02:02:29,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:29,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532761129] [2021-05-22 02:02:29,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:29,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:29,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:29,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532761129] [2021-05-22 02:02:29,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532761129] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:29,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:29,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:29,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665232668] [2021-05-22 02:02:29,962 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:29,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:29,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:29,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:29,962 INFO L87 Difference]: Start difference. First operand 5161 states and 24472 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:30,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:30,089 INFO L93 Difference]: Finished difference Result 11699 states and 52322 transitions. [2021-05-22 02:02:30,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:30,089 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:30,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:30,120 INFO L225 Difference]: With dead ends: 11699 [2021-05-22 02:02:30,120 INFO L226 Difference]: Without dead ends: 11222 [2021-05-22 02:02:30,120 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:30,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11222 states. [2021-05-22 02:02:30,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11222 to 5233. [2021-05-22 02:02:30,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 4.734709480122324) internal successors, (24772), 5232 states have internal predecessors, (24772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:30,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 24772 transitions. [2021-05-22 02:02:30,398 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 24772 transitions. Word has length 29 [2021-05-22 02:02:30,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:30,398 INFO L482 AbstractCegarLoop]: Abstraction has 5233 states and 24772 transitions. [2021-05-22 02:02:30,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:30,398 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 24772 transitions. [2021-05-22 02:02:30,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:30,407 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:30,407 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:30,407 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable623 [2021-05-22 02:02:30,407 INFO L430 AbstractCegarLoop]: === Iteration 625 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:30,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:30,408 INFO L82 PathProgramCache]: Analyzing trace with hash -109424121, now seen corresponding path program 620 times [2021-05-22 02:02:30,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:30,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249897646] [2021-05-22 02:02:30,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:30,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:30,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:30,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249897646] [2021-05-22 02:02:30,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249897646] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:30,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:30,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:30,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293852869] [2021-05-22 02:02:30,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:30,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:30,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:30,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:30,537 INFO L87 Difference]: Start difference. First operand 5233 states and 24772 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:30,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:30,645 INFO L93 Difference]: Finished difference Result 11637 states and 52005 transitions. [2021-05-22 02:02:30,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:30,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:30,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:30,676 INFO L225 Difference]: With dead ends: 11637 [2021-05-22 02:02:30,676 INFO L226 Difference]: Without dead ends: 11174 [2021-05-22 02:02:30,676 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:30,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11174 states. [2021-05-22 02:02:30,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11174 to 5185. [2021-05-22 02:02:30,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.739969135802469) internal successors, (24572), 5184 states have internal predecessors, (24572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:30,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24572 transitions. [2021-05-22 02:02:30,969 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24572 transitions. Word has length 29 [2021-05-22 02:02:30,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:30,970 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24572 transitions. [2021-05-22 02:02:30,970 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:30,970 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24572 transitions. [2021-05-22 02:02:30,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:30,979 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:30,979 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:30,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable624 [2021-05-22 02:02:30,979 INFO L430 AbstractCegarLoop]: === Iteration 626 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:30,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:30,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1285688697, now seen corresponding path program 621 times [2021-05-22 02:02:30,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:30,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93477243] [2021-05-22 02:02:30,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:31,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:31,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:31,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93477243] [2021-05-22 02:02:31,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93477243] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:31,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:31,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:31,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804051934] [2021-05-22 02:02:31,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:31,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:31,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:31,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:31,092 INFO L87 Difference]: Start difference. First operand 5185 states and 24572 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:31,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:31,217 INFO L93 Difference]: Finished difference Result 11789 states and 52709 transitions. [2021-05-22 02:02:31,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:31,217 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:31,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:31,247 INFO L225 Difference]: With dead ends: 11789 [2021-05-22 02:02:31,248 INFO L226 Difference]: Without dead ends: 11312 [2021-05-22 02:02:31,248 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:31,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11312 states. [2021-05-22 02:02:31,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11312 to 5263. [2021-05-22 02:02:31,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5262 states have (on average 4.725389585708856) internal successors, (24865), 5262 states have internal predecessors, (24865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:31,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 24865 transitions. [2021-05-22 02:02:31,493 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 24865 transitions. Word has length 29 [2021-05-22 02:02:31,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:31,493 INFO L482 AbstractCegarLoop]: Abstraction has 5263 states and 24865 transitions. [2021-05-22 02:02:31,493 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:31,493 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 24865 transitions. [2021-05-22 02:02:31,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:31,502 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:31,502 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:31,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable625 [2021-05-22 02:02:31,502 INFO L430 AbstractCegarLoop]: === Iteration 627 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:31,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:31,502 INFO L82 PathProgramCache]: Analyzing trace with hash -2081715577, now seen corresponding path program 622 times [2021-05-22 02:02:31,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:31,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545509732] [2021-05-22 02:02:31,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:31,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:31,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:31,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545509732] [2021-05-22 02:02:31,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545509732] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:31,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:31,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:31,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612636825] [2021-05-22 02:02:31,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:31,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:31,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:31,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:31,614 INFO L87 Difference]: Start difference. First operand 5263 states and 24865 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:31,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:31,721 INFO L93 Difference]: Finished difference Result 11787 states and 52626 transitions. [2021-05-22 02:02:31,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:31,721 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:31,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:31,750 INFO L225 Difference]: With dead ends: 11787 [2021-05-22 02:02:31,751 INFO L226 Difference]: Without dead ends: 11234 [2021-05-22 02:02:31,751 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:31,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11234 states. [2021-05-22 02:02:31,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11234 to 5185. [2021-05-22 02:02:31,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.735339506172839) internal successors, (24548), 5184 states have internal predecessors, (24548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:31,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24548 transitions. [2021-05-22 02:02:31,996 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24548 transitions. Word has length 29 [2021-05-22 02:02:31,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:31,996 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24548 transitions. [2021-05-22 02:02:31,996 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:31,996 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24548 transitions. [2021-05-22 02:02:32,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:32,005 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:32,005 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:32,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable626 [2021-05-22 02:02:32,006 INFO L430 AbstractCegarLoop]: === Iteration 628 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:32,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:32,006 INFO L82 PathProgramCache]: Analyzing trace with hash -2142436763, now seen corresponding path program 623 times [2021-05-22 02:02:32,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:32,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565641930] [2021-05-22 02:02:32,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:32,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:32,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:32,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565641930] [2021-05-22 02:02:32,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565641930] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:32,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:32,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:32,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903893646] [2021-05-22 02:02:32,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:32,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:32,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:32,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:32,146 INFO L87 Difference]: Start difference. First operand 5185 states and 24548 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:32,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:32,237 INFO L93 Difference]: Finished difference Result 11635 states and 52000 transitions. [2021-05-22 02:02:32,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:32,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:32,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:32,268 INFO L225 Difference]: With dead ends: 11635 [2021-05-22 02:02:32,268 INFO L226 Difference]: Without dead ends: 11220 [2021-05-22 02:02:32,269 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:32,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11220 states. [2021-05-22 02:02:32,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11220 to 5233. [2021-05-22 02:02:32,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 4.7255351681957185) internal successors, (24724), 5232 states have internal predecessors, (24724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:32,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 24724 transitions. [2021-05-22 02:02:32,518 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 24724 transitions. Word has length 29 [2021-05-22 02:02:32,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:32,519 INFO L482 AbstractCegarLoop]: Abstraction has 5233 states and 24724 transitions. [2021-05-22 02:02:32,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:32,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 24724 transitions. [2021-05-22 02:02:32,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:32,528 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:32,528 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:32,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable627 [2021-05-22 02:02:32,528 INFO L430 AbstractCegarLoop]: === Iteration 629 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:32,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:32,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1671628487, now seen corresponding path program 624 times [2021-05-22 02:02:32,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:32,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954142188] [2021-05-22 02:02:32,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:32,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:32,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954142188] [2021-05-22 02:02:32,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954142188] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:32,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:32,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:32,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829950248] [2021-05-22 02:02:32,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:32,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:32,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:32,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:32,651 INFO L87 Difference]: Start difference. First operand 5233 states and 24724 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:32,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:32,759 INFO L93 Difference]: Finished difference Result 11695 states and 52216 transitions. [2021-05-22 02:02:32,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:32,759 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:32,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:32,788 INFO L225 Difference]: With dead ends: 11695 [2021-05-22 02:02:32,788 INFO L226 Difference]: Without dead ends: 11112 [2021-05-22 02:02:32,789 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:32,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11112 states. [2021-05-22 02:02:33,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11112 to 5125. [2021-05-22 02:02:33,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5124 states have (on average 4.754488680718189) internal successors, (24362), 5124 states have internal predecessors, (24362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 24362 transitions. [2021-05-22 02:02:33,047 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 24362 transitions. Word has length 29 [2021-05-22 02:02:33,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:33,047 INFO L482 AbstractCegarLoop]: Abstraction has 5125 states and 24362 transitions. [2021-05-22 02:02:33,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:33,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 24362 transitions. [2021-05-22 02:02:33,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:33,056 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:33,056 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:33,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable628 [2021-05-22 02:02:33,056 INFO L430 AbstractCegarLoop]: === Iteration 630 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:33,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:33,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1987422821, now seen corresponding path program 625 times [2021-05-22 02:02:33,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:33,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393020588] [2021-05-22 02:02:33,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:33,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:33,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393020588] [2021-05-22 02:02:33,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393020588] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:33,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:33,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:33,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538307067] [2021-05-22 02:02:33,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:33,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:33,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:33,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:33,172 INFO L87 Difference]: Start difference. First operand 5125 states and 24362 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:33,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:33,270 INFO L93 Difference]: Finished difference Result 12149 states and 54283 transitions. [2021-05-22 02:02:33,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:33,270 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:33,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:33,304 INFO L225 Difference]: With dead ends: 12149 [2021-05-22 02:02:33,304 INFO L226 Difference]: Without dead ends: 11607 [2021-05-22 02:02:33,304 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:33,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11607 states. [2021-05-22 02:02:33,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11607 to 5352. [2021-05-22 02:02:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5352 states, 5351 states have (on average 4.727527564941132) internal successors, (25297), 5351 states have internal predecessors, (25297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:33,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5352 states to 5352 states and 25297 transitions. [2021-05-22 02:02:33,569 INFO L78 Accepts]: Start accepts. Automaton has 5352 states and 25297 transitions. Word has length 29 [2021-05-22 02:02:33,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:33,569 INFO L482 AbstractCegarLoop]: Abstraction has 5352 states and 25297 transitions. [2021-05-22 02:02:33,569 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:33,569 INFO L276 IsEmpty]: Start isEmpty. Operand 5352 states and 25297 transitions. [2021-05-22 02:02:33,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:33,578 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:33,578 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:33,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable629 [2021-05-22 02:02:33,578 INFO L430 AbstractCegarLoop]: === Iteration 631 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:33,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:33,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1226481849, now seen corresponding path program 626 times [2021-05-22 02:02:33,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:33,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968837519] [2021-05-22 02:02:33,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:33,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:33,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:33,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968837519] [2021-05-22 02:02:33,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968837519] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:33,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:33,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:33,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435231102] [2021-05-22 02:02:33,691 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:33,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:33,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:33,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:33,692 INFO L87 Difference]: Start difference. First operand 5352 states and 25297 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:33,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:33,806 INFO L93 Difference]: Finished difference Result 12084 states and 53914 transitions. [2021-05-22 02:02:33,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:33,806 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:33,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:33,836 INFO L225 Difference]: With dead ends: 12084 [2021-05-22 02:02:33,837 INFO L226 Difference]: Without dead ends: 11464 [2021-05-22 02:02:33,837 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:33,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11464 states. [2021-05-22 02:02:34,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11464 to 5209. [2021-05-22 02:02:34,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.746927803379417) internal successors, (24722), 5208 states have internal predecessors, (24722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:34,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24722 transitions. [2021-05-22 02:02:34,108 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24722 transitions. Word has length 29 [2021-05-22 02:02:34,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:34,109 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24722 transitions. [2021-05-22 02:02:34,109 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:34,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24722 transitions. [2021-05-22 02:02:34,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:34,118 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:34,118 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:34,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable630 [2021-05-22 02:02:34,118 INFO L430 AbstractCegarLoop]: === Iteration 632 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:34,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:34,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1506520775, now seen corresponding path program 627 times [2021-05-22 02:02:34,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:34,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013186127] [2021-05-22 02:02:34,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:34,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:34,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013186127] [2021-05-22 02:02:34,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013186127] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:34,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:34,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:34,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273208648] [2021-05-22 02:02:34,239 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:34,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:34,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:34,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:34,240 INFO L87 Difference]: Start difference. First operand 5209 states and 24722 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:34,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:34,334 INFO L93 Difference]: Finished difference Result 12024 states and 53696 transitions. [2021-05-22 02:02:34,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:34,335 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:34,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:34,365 INFO L225 Difference]: With dead ends: 12024 [2021-05-22 02:02:34,365 INFO L226 Difference]: Without dead ends: 11482 [2021-05-22 02:02:34,365 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:34,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11482 states. [2021-05-22 02:02:34,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11482 to 5289. [2021-05-22 02:02:34,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5289 states, 5288 states have (on average 4.7295763993948565) internal successors, (25010), 5288 states have internal predecessors, (25010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:34,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5289 states to 5289 states and 25010 transitions. [2021-05-22 02:02:34,620 INFO L78 Accepts]: Start accepts. Automaton has 5289 states and 25010 transitions. Word has length 29 [2021-05-22 02:02:34,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:34,620 INFO L482 AbstractCegarLoop]: Abstraction has 5289 states and 25010 transitions. [2021-05-22 02:02:34,620 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:34,620 INFO L276 IsEmpty]: Start isEmpty. Operand 5289 states and 25010 transitions. [2021-05-22 02:02:34,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:34,629 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:34,629 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:34,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable631 [2021-05-22 02:02:34,629 INFO L430 AbstractCegarLoop]: === Iteration 633 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:34,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:34,629 INFO L82 PathProgramCache]: Analyzing trace with hash -181725497, now seen corresponding path program 628 times [2021-05-22 02:02:34,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:34,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591201708] [2021-05-22 02:02:34,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:34,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:34,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591201708] [2021-05-22 02:02:34,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591201708] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:34,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:34,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:34,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904730551] [2021-05-22 02:02:34,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:34,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:34,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:34,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:34,748 INFO L87 Difference]: Start difference. First operand 5289 states and 25010 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:34,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:34,851 INFO L93 Difference]: Finished difference Result 11897 states and 53089 transitions. [2021-05-22 02:02:34,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:34,852 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:34,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:34,883 INFO L225 Difference]: With dead ends: 11897 [2021-05-22 02:02:34,883 INFO L226 Difference]: Without dead ends: 11402 [2021-05-22 02:02:34,883 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:35,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11402 states. [2021-05-22 02:02:35,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11402 to 5209. [2021-05-22 02:02:35,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.739247311827957) internal successors, (24682), 5208 states have internal predecessors, (24682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:35,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24682 transitions. [2021-05-22 02:02:35,142 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24682 transitions. Word has length 29 [2021-05-22 02:02:35,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:35,142 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24682 transitions. [2021-05-22 02:02:35,142 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:35,142 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24682 transitions. [2021-05-22 02:02:35,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:35,151 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:35,151 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:35,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable632 [2021-05-22 02:02:35,152 INFO L430 AbstractCegarLoop]: === Iteration 634 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:35,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:35,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1894525737, now seen corresponding path program 629 times [2021-05-22 02:02:35,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:35,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735671451] [2021-05-22 02:02:35,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:35,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:35,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:35,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735671451] [2021-05-22 02:02:35,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735671451] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:35,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:35,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:35,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175712138] [2021-05-22 02:02:35,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:35,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:35,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:35,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:35,273 INFO L87 Difference]: Start difference. First operand 5209 states and 24682 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:35,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:35,400 INFO L93 Difference]: Finished difference Result 11862 states and 52996 transitions. [2021-05-22 02:02:35,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:35,401 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:35,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:35,432 INFO L225 Difference]: With dead ends: 11862 [2021-05-22 02:02:35,432 INFO L226 Difference]: Without dead ends: 11385 [2021-05-22 02:02:35,432 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:35,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11385 states. [2021-05-22 02:02:35,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11385 to 5257. [2021-05-22 02:02:35,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5256 states have (on average 4.72945205479452) internal successors, (24858), 5256 states have internal predecessors, (24858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:35,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 24858 transitions. [2021-05-22 02:02:35,718 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 24858 transitions. Word has length 29 [2021-05-22 02:02:35,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:35,719 INFO L482 AbstractCegarLoop]: Abstraction has 5257 states and 24858 transitions. [2021-05-22 02:02:35,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:35,719 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 24858 transitions. [2021-05-22 02:02:35,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:35,728 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:35,728 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:35,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable633 [2021-05-22 02:02:35,728 INFO L430 AbstractCegarLoop]: === Iteration 635 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:35,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:35,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1047728775, now seen corresponding path program 630 times [2021-05-22 02:02:35,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:35,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569855499] [2021-05-22 02:02:35,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:35,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:35,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569855499] [2021-05-22 02:02:35,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569855499] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:35,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:35,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:35,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981183620] [2021-05-22 02:02:35,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:35,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:35,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:35,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:35,849 INFO L87 Difference]: Start difference. First operand 5257 states and 24858 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:35,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:35,948 INFO L93 Difference]: Finished difference Result 11800 states and 52679 transitions. [2021-05-22 02:02:35,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:35,949 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:35,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:35,980 INFO L225 Difference]: With dead ends: 11800 [2021-05-22 02:02:35,980 INFO L226 Difference]: Without dead ends: 11281 [2021-05-22 02:02:35,980 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:36,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11281 states. [2021-05-22 02:02:36,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11281 to 5153. [2021-05-22 02:02:36,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.7519409937888195) internal successors, (24482), 5152 states have internal predecessors, (24482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24482 transitions. [2021-05-22 02:02:36,234 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24482 transitions. Word has length 29 [2021-05-22 02:02:36,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:36,234 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24482 transitions. [2021-05-22 02:02:36,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24482 transitions. [2021-05-22 02:02:36,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:36,243 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:36,243 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:36,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable634 [2021-05-22 02:02:36,243 INFO L430 AbstractCegarLoop]: === Iteration 636 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:36,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:36,243 INFO L82 PathProgramCache]: Analyzing trace with hash 65081957, now seen corresponding path program 631 times [2021-05-22 02:02:36,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:36,243 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516089628] [2021-05-22 02:02:36,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:36,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:36,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516089628] [2021-05-22 02:02:36,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516089628] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:36,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:36,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:36,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531560142] [2021-05-22 02:02:36,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:36,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:36,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:36,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:36,352 INFO L87 Difference]: Start difference. First operand 5153 states and 24482 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:36,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:36,454 INFO L93 Difference]: Finished difference Result 12275 states and 54864 transitions. [2021-05-22 02:02:36,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:36,454 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:36,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:36,485 INFO L225 Difference]: With dead ends: 12275 [2021-05-22 02:02:36,485 INFO L226 Difference]: Without dead ends: 11733 [2021-05-22 02:02:36,486 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:36,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11733 states. [2021-05-22 02:02:36,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11733 to 5366. [2021-05-22 02:02:36,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5366 states, 5365 states have (on average 4.724324324324324) internal successors, (25346), 5365 states have internal predecessors, (25346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:36,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5366 states to 5366 states and 25346 transitions. [2021-05-22 02:02:36,745 INFO L78 Accepts]: Start accepts. Automaton has 5366 states and 25346 transitions. Word has length 29 [2021-05-22 02:02:36,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:36,745 INFO L482 AbstractCegarLoop]: Abstraction has 5366 states and 25346 transitions. [2021-05-22 02:02:36,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:36,745 INFO L276 IsEmpty]: Start isEmpty. Operand 5366 states and 25346 transitions. [2021-05-22 02:02:36,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:36,754 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:36,754 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:36,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable635 [2021-05-22 02:02:36,754 INFO L430 AbstractCegarLoop]: === Iteration 637 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:36,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:36,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1146144583, now seen corresponding path program 632 times [2021-05-22 02:02:36,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:36,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231677283] [2021-05-22 02:02:36,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:36,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:36,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231677283] [2021-05-22 02:02:36,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231677283] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:36,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:36,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:36,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228449908] [2021-05-22 02:02:36,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:36,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:36,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:36,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:36,863 INFO L87 Difference]: Start difference. First operand 5366 states and 25346 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:36,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:36,980 INFO L93 Difference]: Finished difference Result 12210 states and 54495 transitions. [2021-05-22 02:02:36,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:36,981 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:36,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:37,012 INFO L225 Difference]: With dead ends: 12210 [2021-05-22 02:02:37,012 INFO L226 Difference]: Without dead ends: 11590 [2021-05-22 02:02:37,012 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:37,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11590 states. [2021-05-22 02:02:37,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11590 to 5223. [2021-05-22 02:02:37,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5223 states, 5222 states have (on average 4.740903868249712) internal successors, (24757), 5222 states have internal predecessors, (24757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:37,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5223 states to 5223 states and 24757 transitions. [2021-05-22 02:02:37,267 INFO L78 Accepts]: Start accepts. Automaton has 5223 states and 24757 transitions. Word has length 29 [2021-05-22 02:02:37,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:37,267 INFO L482 AbstractCegarLoop]: Abstraction has 5223 states and 24757 transitions. [2021-05-22 02:02:37,267 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:37,267 INFO L276 IsEmpty]: Start isEmpty. Operand 5223 states and 24757 transitions. [2021-05-22 02:02:37,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:37,276 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:37,276 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:37,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable636 [2021-05-22 02:02:37,277 INFO L430 AbstractCegarLoop]: === Iteration 638 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:37,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:37,277 INFO L82 PathProgramCache]: Analyzing trace with hash 455043685, now seen corresponding path program 633 times [2021-05-22 02:02:37,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:37,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717392162] [2021-05-22 02:02:37,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:37,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:37,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717392162] [2021-05-22 02:02:37,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717392162] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:37,398 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:37,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:37,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894669043] [2021-05-22 02:02:37,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:37,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:37,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:37,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:37,399 INFO L87 Difference]: Start difference. First operand 5223 states and 24757 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:37,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:37,503 INFO L93 Difference]: Finished difference Result 12234 states and 54655 transitions. [2021-05-22 02:02:37,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:37,503 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:37,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:37,535 INFO L225 Difference]: With dead ends: 12234 [2021-05-22 02:02:37,535 INFO L226 Difference]: Without dead ends: 11692 [2021-05-22 02:02:37,535 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:37,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11692 states. [2021-05-22 02:02:37,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11692 to 5331. [2021-05-22 02:02:37,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5331 states, 5330 states have (on average 4.719887429643527) internal successors, (25157), 5330 states have internal predecessors, (25157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:37,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5331 states to 5331 states and 25157 transitions. [2021-05-22 02:02:37,793 INFO L78 Accepts]: Start accepts. Automaton has 5331 states and 25157 transitions. Word has length 29 [2021-05-22 02:02:37,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:37,793 INFO L482 AbstractCegarLoop]: Abstraction has 5331 states and 25157 transitions. [2021-05-22 02:02:37,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:37,793 INFO L276 IsEmpty]: Start isEmpty. Operand 5331 states and 25157 transitions. [2021-05-22 02:02:37,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:37,802 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:37,802 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:37,802 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable637 [2021-05-22 02:02:37,802 INFO L430 AbstractCegarLoop]: === Iteration 639 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:37,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:37,803 INFO L82 PathProgramCache]: Analyzing trace with hash -2052541851, now seen corresponding path program 634 times [2021-05-22 02:02:37,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:37,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308470955] [2021-05-22 02:02:37,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:37,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:37,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:37,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308470955] [2021-05-22 02:02:37,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308470955] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:37,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:37,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:37,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714484061] [2021-05-22 02:02:37,927 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:37,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:37,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:37,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:37,927 INFO L87 Difference]: Start difference. First operand 5331 states and 25157 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:38,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:38,045 INFO L93 Difference]: Finished difference Result 12163 states and 54272 transitions. [2021-05-22 02:02:38,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:38,046 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:38,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:38,077 INFO L225 Difference]: With dead ends: 12163 [2021-05-22 02:02:38,078 INFO L226 Difference]: Without dead ends: 11584 [2021-05-22 02:02:38,078 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:38,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11584 states. [2021-05-22 02:02:38,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11584 to 5223. [2021-05-22 02:02:38,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5223 states, 5222 states have (on average 4.730563002680965) internal successors, (24703), 5222 states have internal predecessors, (24703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:38,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5223 states to 5223 states and 24703 transitions. [2021-05-22 02:02:38,341 INFO L78 Accepts]: Start accepts. Automaton has 5223 states and 24703 transitions. Word has length 29 [2021-05-22 02:02:38,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:38,341 INFO L482 AbstractCegarLoop]: Abstraction has 5223 states and 24703 transitions. [2021-05-22 02:02:38,341 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:38,342 INFO L276 IsEmpty]: Start isEmpty. Operand 5223 states and 24703 transitions. [2021-05-22 02:02:38,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:38,352 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:38,352 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:38,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable638 [2021-05-22 02:02:38,352 INFO L430 AbstractCegarLoop]: === Iteration 640 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:38,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:38,352 INFO L82 PathProgramCache]: Analyzing trace with hash 843048647, now seen corresponding path program 635 times [2021-05-22 02:02:38,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:38,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942552897] [2021-05-22 02:02:38,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:38,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:38,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:38,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942552897] [2021-05-22 02:02:38,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942552897] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:38,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:38,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:38,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408672746] [2021-05-22 02:02:38,467 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:38,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:38,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:38,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:38,468 INFO L87 Difference]: Start difference. First operand 5223 states and 24703 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:38,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:38,583 INFO L93 Difference]: Finished difference Result 12072 states and 53941 transitions. [2021-05-22 02:02:38,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:38,584 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:38,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:38,616 INFO L225 Difference]: With dead ends: 12072 [2021-05-22 02:02:38,616 INFO L226 Difference]: Without dead ends: 11595 [2021-05-22 02:02:38,616 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:38,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11595 states. [2021-05-22 02:02:38,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11595 to 5299. [2021-05-22 02:02:38,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5299 states, 5298 states have (on average 4.717063042657607) internal successors, (24991), 5298 states have internal predecessors, (24991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:38,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5299 states to 5299 states and 24991 transitions. [2021-05-22 02:02:38,873 INFO L78 Accepts]: Start accepts. Automaton has 5299 states and 24991 transitions. Word has length 29 [2021-05-22 02:02:38,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:38,873 INFO L482 AbstractCegarLoop]: Abstraction has 5299 states and 24991 transitions. [2021-05-22 02:02:38,873 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:38,873 INFO L276 IsEmpty]: Start isEmpty. Operand 5299 states and 24991 transitions. [2021-05-22 02:02:38,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:38,882 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:38,882 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:38,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable639 [2021-05-22 02:02:38,882 INFO L430 AbstractCegarLoop]: === Iteration 641 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:38,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:38,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1752653605, now seen corresponding path program 636 times [2021-05-22 02:02:38,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:38,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614921893] [2021-05-22 02:02:38,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:38,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:38,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:38,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614921893] [2021-05-22 02:02:38,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614921893] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:38,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:38,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:38,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974900388] [2021-05-22 02:02:38,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:38,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:38,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:38,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:38,993 INFO L87 Difference]: Start difference. First operand 5299 states and 24991 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:39,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:39,113 INFO L93 Difference]: Finished difference Result 12066 states and 53848 transitions. [2021-05-22 02:02:39,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:39,113 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:39,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:39,145 INFO L225 Difference]: With dead ends: 12066 [2021-05-22 02:02:39,145 INFO L226 Difference]: Without dead ends: 11449 [2021-05-22 02:02:39,145 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:39,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11449 states. [2021-05-22 02:02:39,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11449 to 5153. [2021-05-22 02:02:39,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.746506211180124) internal successors, (24454), 5152 states have internal predecessors, (24454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:39,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24454 transitions. [2021-05-22 02:02:39,397 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24454 transitions. Word has length 29 [2021-05-22 02:02:39,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:39,397 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24454 transitions. [2021-05-22 02:02:39,397 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:39,397 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24454 transitions. [2021-05-22 02:02:39,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:39,407 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:39,407 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:39,407 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable640 [2021-05-22 02:02:39,407 INFO L430 AbstractCegarLoop]: === Iteration 642 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:39,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:39,407 INFO L82 PathProgramCache]: Analyzing trace with hash -724304313, now seen corresponding path program 637 times [2021-05-22 02:02:39,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:39,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73201582] [2021-05-22 02:02:39,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:39,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:39,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:39,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73201582] [2021-05-22 02:02:39,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73201582] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:39,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:39,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:39,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655206939] [2021-05-22 02:02:39,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:39,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:39,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:39,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:39,531 INFO L87 Difference]: Start difference. First operand 5153 states and 24454 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:39,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:39,631 INFO L93 Difference]: Finished difference Result 11967 states and 53493 transitions. [2021-05-22 02:02:39,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:39,631 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:39,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:39,661 INFO L225 Difference]: With dead ends: 11967 [2021-05-22 02:02:39,662 INFO L226 Difference]: Without dead ends: 11425 [2021-05-22 02:02:39,662 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:39,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11425 states. [2021-05-22 02:02:39,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11425 to 5273. [2021-05-22 02:02:39,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5273 states, 5272 states have (on average 4.731790591805766) internal successors, (24946), 5272 states have internal predecessors, (24946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:39,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5273 states to 5273 states and 24946 transitions. [2021-05-22 02:02:39,912 INFO L78 Accepts]: Start accepts. Automaton has 5273 states and 24946 transitions. Word has length 29 [2021-05-22 02:02:39,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:39,912 INFO L482 AbstractCegarLoop]: Abstraction has 5273 states and 24946 transitions. [2021-05-22 02:02:39,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:39,912 INFO L276 IsEmpty]: Start isEmpty. Operand 5273 states and 24946 transitions. [2021-05-22 02:02:39,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:39,921 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:39,921 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:39,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable641 [2021-05-22 02:02:39,921 INFO L430 AbstractCegarLoop]: === Iteration 643 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:39,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:39,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1882416711, now seen corresponding path program 638 times [2021-05-22 02:02:39,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:39,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231110762] [2021-05-22 02:02:39,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:39,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:40,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:40,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231110762] [2021-05-22 02:02:40,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231110762] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:40,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:40,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:40,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997976861] [2021-05-22 02:02:40,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:40,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:40,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:40,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:40,046 INFO L87 Difference]: Start difference. First operand 5273 states and 24946 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:40,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:40,147 INFO L93 Difference]: Finished difference Result 11840 states and 52886 transitions. [2021-05-22 02:02:40,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:40,148 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:40,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:40,178 INFO L225 Difference]: With dead ends: 11840 [2021-05-22 02:02:40,178 INFO L226 Difference]: Without dead ends: 11345 [2021-05-22 02:02:40,178 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:40,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11345 states. [2021-05-22 02:02:40,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11345 to 5193. [2021-05-22 02:02:40,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5193 states, 5192 states have (on average 4.741525423728813) internal successors, (24618), 5192 states have internal predecessors, (24618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:40,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 24618 transitions. [2021-05-22 02:02:40,425 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 24618 transitions. Word has length 29 [2021-05-22 02:02:40,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:40,425 INFO L482 AbstractCegarLoop]: Abstraction has 5193 states and 24618 transitions. [2021-05-22 02:02:40,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:40,425 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 24618 transitions. [2021-05-22 02:02:40,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:40,435 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:40,435 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:40,435 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable642 [2021-05-22 02:02:40,435 INFO L430 AbstractCegarLoop]: === Iteration 644 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:40,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:40,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1537650341, now seen corresponding path program 639 times [2021-05-22 02:02:40,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:40,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921925323] [2021-05-22 02:02:40,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:40,564 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:40,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921925323] [2021-05-22 02:02:40,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921925323] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:40,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:40,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:40,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794439122] [2021-05-22 02:02:40,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:40,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:40,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:40,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:40,564 INFO L87 Difference]: Start difference. First operand 5193 states and 24618 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:40,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:40,667 INFO L93 Difference]: Finished difference Result 12051 states and 53845 transitions. [2021-05-22 02:02:40,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:40,667 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:40,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:40,698 INFO L225 Difference]: With dead ends: 12051 [2021-05-22 02:02:40,698 INFO L226 Difference]: Without dead ends: 11509 [2021-05-22 02:02:40,698 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:40,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11509 states. [2021-05-22 02:02:40,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11509 to 5301. [2021-05-22 02:02:40,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5301 states, 5300 states have (on average 4.720377358490566) internal successors, (25018), 5300 states have internal predecessors, (25018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:40,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5301 states to 5301 states and 25018 transitions. [2021-05-22 02:02:40,961 INFO L78 Accepts]: Start accepts. Automaton has 5301 states and 25018 transitions. Word has length 29 [2021-05-22 02:02:40,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:40,961 INFO L482 AbstractCegarLoop]: Abstraction has 5301 states and 25018 transitions. [2021-05-22 02:02:40,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:40,961 INFO L276 IsEmpty]: Start isEmpty. Operand 5301 states and 25018 transitions. [2021-05-22 02:02:40,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:40,970 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:40,970 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:40,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable643 [2021-05-22 02:02:40,970 INFO L430 AbstractCegarLoop]: === Iteration 645 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:40,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:40,970 INFO L82 PathProgramCache]: Analyzing trace with hash -342940089, now seen corresponding path program 640 times [2021-05-22 02:02:40,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:40,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918721722] [2021-05-22 02:02:40,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:41,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:41,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:41,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918721722] [2021-05-22 02:02:41,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918721722] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:41,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:41,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:41,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963015519] [2021-05-22 02:02:41,097 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:41,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:41,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:41,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:41,097 INFO L87 Difference]: Start difference. First operand 5301 states and 25018 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:41,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:41,274 INFO L93 Difference]: Finished difference Result 11980 states and 53462 transitions. [2021-05-22 02:02:41,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:41,274 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:41,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:41,306 INFO L225 Difference]: With dead ends: 11980 [2021-05-22 02:02:41,306 INFO L226 Difference]: Without dead ends: 11401 [2021-05-22 02:02:41,306 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:41,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11401 states. [2021-05-22 02:02:41,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11401 to 5193. [2021-05-22 02:02:41,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5193 states, 5192 states have (on average 4.73382126348228) internal successors, (24578), 5192 states have internal predecessors, (24578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:41,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 24578 transitions. [2021-05-22 02:02:41,574 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 24578 transitions. Word has length 29 [2021-05-22 02:02:41,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:41,574 INFO L482 AbstractCegarLoop]: Abstraction has 5193 states and 24578 transitions. [2021-05-22 02:02:41,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:41,574 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 24578 transitions. [2021-05-22 02:02:41,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:41,583 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:41,583 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:41,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable644 [2021-05-22 02:02:41,584 INFO L430 AbstractCegarLoop]: === Iteration 646 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:41,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:41,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1569369671, now seen corresponding path program 641 times [2021-05-22 02:02:41,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:41,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108341008] [2021-05-22 02:02:41,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:41,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:41,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:41,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108341008] [2021-05-22 02:02:41,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108341008] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:41,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:41,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:41,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530535560] [2021-05-22 02:02:41,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:41,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:41,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:41,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:41,707 INFO L87 Difference]: Start difference. First operand 5193 states and 24578 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:41,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:41,806 INFO L93 Difference]: Finished difference Result 11737 states and 52467 transitions. [2021-05-22 02:02:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:41,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:41,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:41,836 INFO L225 Difference]: With dead ends: 11737 [2021-05-22 02:02:41,837 INFO L226 Difference]: Without dead ends: 11322 [2021-05-22 02:02:41,837 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:41,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11322 states. [2021-05-22 02:02:42,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11322 to 5241. [2021-05-22 02:02:42,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5241 states, 5240 states have (on average 4.724045801526717) internal successors, (24754), 5240 states have internal predecessors, (24754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:42,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 24754 transitions. [2021-05-22 02:02:42,090 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 24754 transitions. Word has length 29 [2021-05-22 02:02:42,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:42,090 INFO L482 AbstractCegarLoop]: Abstraction has 5241 states and 24754 transitions. [2021-05-22 02:02:42,091 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:42,091 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 24754 transitions. [2021-05-22 02:02:42,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:42,100 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:42,100 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:42,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable645 [2021-05-22 02:02:42,100 INFO L430 AbstractCegarLoop]: === Iteration 647 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:42,100 INFO L82 PathProgramCache]: Analyzing trace with hash -546709979, now seen corresponding path program 642 times [2021-05-22 02:02:42,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:42,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059073411] [2021-05-22 02:02:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:42,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:42,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:42,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059073411] [2021-05-22 02:02:42,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059073411] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:42,224 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:42,224 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:42,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301169153] [2021-05-22 02:02:42,224 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:42,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:42,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:42,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:42,224 INFO L87 Difference]: Start difference. First operand 5241 states and 24754 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:42,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:42,340 INFO L93 Difference]: Finished difference Result 11793 states and 52671 transitions. [2021-05-22 02:02:42,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:42,340 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:42,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:42,371 INFO L225 Difference]: With dead ends: 11793 [2021-05-22 02:02:42,371 INFO L226 Difference]: Without dead ends: 11234 [2021-05-22 02:02:42,371 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:42,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11234 states. [2021-05-22 02:02:42,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11234 to 5153. [2021-05-22 02:02:42,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.742624223602484) internal successors, (24434), 5152 states have internal predecessors, (24434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:42,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24434 transitions. [2021-05-22 02:02:42,621 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24434 transitions. Word has length 29 [2021-05-22 02:02:42,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:42,621 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24434 transitions. [2021-05-22 02:02:42,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:42,621 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24434 transitions. [2021-05-22 02:02:42,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:42,630 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:42,630 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:42,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable646 [2021-05-22 02:02:42,630 INFO L430 AbstractCegarLoop]: === Iteration 648 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:42,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:42,630 INFO L82 PathProgramCache]: Analyzing trace with hash -644783575, now seen corresponding path program 643 times [2021-05-22 02:02:42,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:42,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338835170] [2021-05-22 02:02:42,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:42,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:42,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:42,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338835170] [2021-05-22 02:02:42,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338835170] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:42,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:42,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:42,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625262337] [2021-05-22 02:02:42,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:42,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:42,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:42,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:42,751 INFO L87 Difference]: Start difference. First operand 5153 states and 24434 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:42,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:42,876 INFO L93 Difference]: Finished difference Result 11660 states and 52187 transitions. [2021-05-22 02:02:42,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:42,877 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:42,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:42,907 INFO L225 Difference]: With dead ends: 11660 [2021-05-22 02:02:42,907 INFO L226 Difference]: Without dead ends: 11183 [2021-05-22 02:02:42,907 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:43,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11183 states. [2021-05-22 02:02:43,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11183 to 5225. [2021-05-22 02:02:43,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 4.73468606431853) internal successors, (24734), 5224 states have internal predecessors, (24734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 24734 transitions. [2021-05-22 02:02:43,157 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 24734 transitions. Word has length 29 [2021-05-22 02:02:43,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:43,157 INFO L482 AbstractCegarLoop]: Abstraction has 5225 states and 24734 transitions. [2021-05-22 02:02:43,157 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:43,157 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 24734 transitions. [2021-05-22 02:02:43,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:43,166 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:43,166 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:43,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable647 [2021-05-22 02:02:43,166 INFO L430 AbstractCegarLoop]: === Iteration 649 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:43,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:43,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1491580537, now seen corresponding path program 644 times [2021-05-22 02:02:43,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:43,167 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306167216] [2021-05-22 02:02:43,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:43,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:43,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:43,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306167216] [2021-05-22 02:02:43,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306167216] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:43,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:43,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:43,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257824098] [2021-05-22 02:02:43,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:43,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:43,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:43,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:43,288 INFO L87 Difference]: Start difference. First operand 5225 states and 24734 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:43,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:43,386 INFO L93 Difference]: Finished difference Result 11598 states and 51870 transitions. [2021-05-22 02:02:43,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:43,387 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:43,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:43,416 INFO L225 Difference]: With dead ends: 11598 [2021-05-22 02:02:43,416 INFO L226 Difference]: Without dead ends: 11135 [2021-05-22 02:02:43,416 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:43,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11135 states. [2021-05-22 02:02:43,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11135 to 5177. [2021-05-22 02:02:43,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5177 states, 5176 states have (on average 4.739953632148377) internal successors, (24534), 5176 states have internal predecessors, (24534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:43,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5177 states to 5177 states and 24534 transitions. [2021-05-22 02:02:43,705 INFO L78 Accepts]: Start accepts. Automaton has 5177 states and 24534 transitions. Word has length 29 [2021-05-22 02:02:43,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:43,705 INFO L482 AbstractCegarLoop]: Abstraction has 5177 states and 24534 transitions. [2021-05-22 02:02:43,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:43,705 INFO L276 IsEmpty]: Start isEmpty. Operand 5177 states and 24534 transitions. [2021-05-22 02:02:43,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:43,715 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:43,715 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:43,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable648 [2021-05-22 02:02:43,715 INFO L430 AbstractCegarLoop]: === Iteration 650 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:43,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:43,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1617171079, now seen corresponding path program 645 times [2021-05-22 02:02:43,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:43,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802594398] [2021-05-22 02:02:43,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:43,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:43,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:43,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802594398] [2021-05-22 02:02:43,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802594398] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:43,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:43,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:43,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576681559] [2021-05-22 02:02:43,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:43,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:43,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:43,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:43,827 INFO L87 Difference]: Start difference. First operand 5177 states and 24534 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:43,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:43,951 INFO L93 Difference]: Finished difference Result 11744 states and 52555 transitions. [2021-05-22 02:02:43,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:43,951 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:43,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:43,983 INFO L225 Difference]: With dead ends: 11744 [2021-05-22 02:02:43,983 INFO L226 Difference]: Without dead ends: 11267 [2021-05-22 02:02:43,983 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:44,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11267 states. [2021-05-22 02:02:44,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11267 to 5253. [2021-05-22 02:02:44,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5253 states, 5252 states have (on average 4.7261995430312265) internal successors, (24822), 5252 states have internal predecessors, (24822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:44,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5253 states to 5253 states and 24822 transitions. [2021-05-22 02:02:44,242 INFO L78 Accepts]: Start accepts. Automaton has 5253 states and 24822 transitions. Word has length 29 [2021-05-22 02:02:44,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:44,242 INFO L482 AbstractCegarLoop]: Abstraction has 5253 states and 24822 transitions. [2021-05-22 02:02:44,242 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:44,243 INFO L276 IsEmpty]: Start isEmpty. Operand 5253 states and 24822 transitions. [2021-05-22 02:02:44,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:44,252 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:44,252 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:44,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable649 [2021-05-22 02:02:44,252 INFO L430 AbstractCegarLoop]: === Iteration 651 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:44,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:44,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1141196153, now seen corresponding path program 646 times [2021-05-22 02:02:44,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:44,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390852544] [2021-05-22 02:02:44,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:44,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:44,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:44,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390852544] [2021-05-22 02:02:44,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390852544] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:44,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:44,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:44,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99804753] [2021-05-22 02:02:44,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:44,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:44,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:44,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:44,365 INFO L87 Difference]: Start difference. First operand 5253 states and 24822 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:44,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:44,477 INFO L93 Difference]: Finished difference Result 11738 states and 52462 transitions. [2021-05-22 02:02:44,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:44,478 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:44,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:44,508 INFO L225 Difference]: With dead ends: 11738 [2021-05-22 02:02:44,508 INFO L226 Difference]: Without dead ends: 11191 [2021-05-22 02:02:44,508 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:44,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11191 states. [2021-05-22 02:02:44,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11191 to 5177. [2021-05-22 02:02:44,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5177 states, 5176 states have (on average 4.735316846986089) internal successors, (24510), 5176 states have internal predecessors, (24510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:44,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5177 states to 5177 states and 24510 transitions. [2021-05-22 02:02:44,763 INFO L78 Accepts]: Start accepts. Automaton has 5177 states and 24510 transitions. Word has length 29 [2021-05-22 02:02:44,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:44,763 INFO L482 AbstractCegarLoop]: Abstraction has 5177 states and 24510 transitions. [2021-05-22 02:02:44,763 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:44,763 INFO L276 IsEmpty]: Start isEmpty. Operand 5177 states and 24510 transitions. [2021-05-22 02:02:44,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:44,773 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:44,773 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:44,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable650 [2021-05-22 02:02:44,773 INFO L430 AbstractCegarLoop]: === Iteration 652 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:44,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:44,774 INFO L82 PathProgramCache]: Analyzing trace with hash 760423013, now seen corresponding path program 647 times [2021-05-22 02:02:44,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:44,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032685616] [2021-05-22 02:02:44,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:44,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:44,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:44,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032685616] [2021-05-22 02:02:44,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032685616] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:44,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:44,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:44,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009334237] [2021-05-22 02:02:44,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:44,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:44,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:44,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:44,898 INFO L87 Difference]: Start difference. First operand 5177 states and 24510 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:44,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:44,990 INFO L93 Difference]: Finished difference Result 11592 states and 51853 transitions. [2021-05-22 02:02:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:44,990 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:44,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:45,022 INFO L225 Difference]: With dead ends: 11592 [2021-05-22 02:02:45,022 INFO L226 Difference]: Without dead ends: 11177 [2021-05-22 02:02:45,022 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:45,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11177 states. [2021-05-22 02:02:45,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11177 to 5225. [2021-05-22 02:02:45,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 4.725497702909648) internal successors, (24686), 5224 states have internal predecessors, (24686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:45,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 24686 transitions. [2021-05-22 02:02:45,275 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 24686 transitions. Word has length 29 [2021-05-22 02:02:45,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:45,276 INFO L482 AbstractCegarLoop]: Abstraction has 5225 states and 24686 transitions. [2021-05-22 02:02:45,276 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:45,276 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 24686 transitions. [2021-05-22 02:02:45,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:45,285 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:45,285 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:45,285 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable651 [2021-05-22 02:02:45,285 INFO L430 AbstractCegarLoop]: === Iteration 653 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:45,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:45,285 INFO L82 PathProgramCache]: Analyzing trace with hash -413536697, now seen corresponding path program 648 times [2021-05-22 02:02:45,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:45,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530659905] [2021-05-22 02:02:45,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:45,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:45,408 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:45,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530659905] [2021-05-22 02:02:45,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530659905] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:45,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:45,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:45,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443436027] [2021-05-22 02:02:45,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:45,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:45,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:45,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:45,409 INFO L87 Difference]: Start difference. First operand 5225 states and 24686 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:45,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:45,518 INFO L93 Difference]: Finished difference Result 11648 states and 52057 transitions. [2021-05-22 02:02:45,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:45,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:45,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:45,548 INFO L225 Difference]: With dead ends: 11648 [2021-05-22 02:02:45,548 INFO L226 Difference]: Without dead ends: 11077 [2021-05-22 02:02:45,548 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:45,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11077 states. [2021-05-22 02:02:45,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11077 to 5125. [2021-05-22 02:02:45,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5124 states have (on average 4.751756440281031) internal successors, (24348), 5124 states have internal predecessors, (24348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 24348 transitions. [2021-05-22 02:02:45,802 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 24348 transitions. Word has length 29 [2021-05-22 02:02:45,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:45,802 INFO L482 AbstractCegarLoop]: Abstraction has 5125 states and 24348 transitions. [2021-05-22 02:02:45,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:45,802 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 24348 transitions. [2021-05-22 02:02:45,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:45,812 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:45,812 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:45,812 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable652 [2021-05-22 02:02:45,812 INFO L430 AbstractCegarLoop]: === Iteration 654 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:45,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:45,812 INFO L82 PathProgramCache]: Analyzing trace with hash -698538553, now seen corresponding path program 649 times [2021-05-22 02:02:45,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:45,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341629778] [2021-05-22 02:02:45,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:45,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:45,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:45,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341629778] [2021-05-22 02:02:45,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341629778] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:45,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:45,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:45,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277651611] [2021-05-22 02:02:45,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:45,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:45,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:45,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:45,915 INFO L87 Difference]: Start difference. First operand 5125 states and 24348 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:46,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:46,019 INFO L93 Difference]: Finished difference Result 12530 states and 56027 transitions. [2021-05-22 02:02:46,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:46,019 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:46,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:46,052 INFO L225 Difference]: With dead ends: 12530 [2021-05-22 02:02:46,052 INFO L226 Difference]: Without dead ends: 11988 [2021-05-22 02:02:46,053 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 107.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:46,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11988 states. [2021-05-22 02:02:46,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11988 to 5406. [2021-05-22 02:02:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 5405 states have (on average 4.71822386679001) internal successors, (25502), 5405 states have internal predecessors, (25502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:46,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 25502 transitions. [2021-05-22 02:02:46,314 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 25502 transitions. Word has length 29 [2021-05-22 02:02:46,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:46,314 INFO L482 AbstractCegarLoop]: Abstraction has 5406 states and 25502 transitions. [2021-05-22 02:02:46,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:46,314 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 25502 transitions. [2021-05-22 02:02:46,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:46,323 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:46,323 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:46,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable653 [2021-05-22 02:02:46,324 INFO L430 AbstractCegarLoop]: === Iteration 655 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:46,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:46,324 INFO L82 PathProgramCache]: Analyzing trace with hash 382524073, now seen corresponding path program 650 times [2021-05-22 02:02:46,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:46,324 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124370042] [2021-05-22 02:02:46,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:46,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:46,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124370042] [2021-05-22 02:02:46,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124370042] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:46,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:46,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:46,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238359094] [2021-05-22 02:02:46,427 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:46,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:46,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:46,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:46,428 INFO L87 Difference]: Start difference. First operand 5406 states and 25502 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:46,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:46,542 INFO L93 Difference]: Finished difference Result 12465 states and 55658 transitions. [2021-05-22 02:02:46,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:46,542 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:46,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:46,573 INFO L225 Difference]: With dead ends: 12465 [2021-05-22 02:02:46,573 INFO L226 Difference]: Without dead ends: 11845 [2021-05-22 02:02:46,573 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:46,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11845 states. [2021-05-22 02:02:46,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11845 to 5263. [2021-05-22 02:02:46,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5262 states have (on average 4.734321550741163) internal successors, (24912), 5262 states have internal predecessors, (24912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:46,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 24912 transitions. [2021-05-22 02:02:46,844 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 24912 transitions. Word has length 29 [2021-05-22 02:02:46,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:46,844 INFO L482 AbstractCegarLoop]: Abstraction has 5263 states and 24912 transitions. [2021-05-22 02:02:46,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:46,845 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 24912 transitions. [2021-05-22 02:02:46,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:46,854 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:46,854 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:46,854 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable654 [2021-05-22 02:02:46,854 INFO L430 AbstractCegarLoop]: === Iteration 656 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:46,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:46,855 INFO L82 PathProgramCache]: Analyzing trace with hash 394431943, now seen corresponding path program 651 times [2021-05-22 02:02:46,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:46,855 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164281314] [2021-05-22 02:02:46,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:46,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:46,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164281314] [2021-05-22 02:02:46,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164281314] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:46,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:46,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:46,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238265355] [2021-05-22 02:02:46,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:46,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:46,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:46,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:46,980 INFO L87 Difference]: Start difference. First operand 5263 states and 24912 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:47,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:47,076 INFO L93 Difference]: Finished difference Result 12495 states and 55836 transitions. [2021-05-22 02:02:47,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:47,077 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:47,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:47,107 INFO L225 Difference]: With dead ends: 12495 [2021-05-22 02:02:47,107 INFO L226 Difference]: Without dead ends: 11953 [2021-05-22 02:02:47,108 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:47,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11953 states. [2021-05-22 02:02:47,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11953 to 5373. [2021-05-22 02:02:47,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5373 states, 5372 states have (on average 4.712769918093819) internal successors, (25317), 5372 states have internal predecessors, (25317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:47,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5373 states to 5373 states and 25317 transitions. [2021-05-22 02:02:47,363 INFO L78 Accepts]: Start accepts. Automaton has 5373 states and 25317 transitions. Word has length 29 [2021-05-22 02:02:47,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:47,363 INFO L482 AbstractCegarLoop]: Abstraction has 5373 states and 25317 transitions. [2021-05-22 02:02:47,363 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:47,363 INFO L276 IsEmpty]: Start isEmpty. Operand 5373 states and 25317 transitions. [2021-05-22 02:02:47,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:47,372 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:47,372 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:47,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable655 [2021-05-22 02:02:47,372 INFO L430 AbstractCegarLoop]: === Iteration 657 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:47,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:47,373 INFO L82 PathProgramCache]: Analyzing trace with hash 443999687, now seen corresponding path program 652 times [2021-05-22 02:02:47,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:47,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341935120] [2021-05-22 02:02:47,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:47,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:47,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:47,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341935120] [2021-05-22 02:02:47,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341935120] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:47,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:47,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:47,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112879783] [2021-05-22 02:02:47,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:47,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:47,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:47,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:47,487 INFO L87 Difference]: Start difference. First operand 5373 states and 25317 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:47,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:47,602 INFO L93 Difference]: Finished difference Result 12428 states and 55463 transitions. [2021-05-22 02:02:47,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:47,603 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:47,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:47,634 INFO L225 Difference]: With dead ends: 12428 [2021-05-22 02:02:47,634 INFO L226 Difference]: Without dead ends: 11843 [2021-05-22 02:02:47,634 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:47,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11843 states. [2021-05-22 02:02:47,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11843 to 5263. [2021-05-22 02:02:47,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5262 states have (on average 4.723869251235271) internal successors, (24857), 5262 states have internal predecessors, (24857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:47,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 24857 transitions. [2021-05-22 02:02:47,892 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 24857 transitions. Word has length 29 [2021-05-22 02:02:47,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:47,892 INFO L482 AbstractCegarLoop]: Abstraction has 5263 states and 24857 transitions. [2021-05-22 02:02:47,892 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:47,892 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 24857 transitions. [2021-05-22 02:02:47,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:47,901 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:47,901 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:47,901 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable656 [2021-05-22 02:02:47,901 INFO L430 AbstractCegarLoop]: === Iteration 658 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:47,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:47,902 INFO L82 PathProgramCache]: Analyzing trace with hash 782436905, now seen corresponding path program 653 times [2021-05-22 02:02:47,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:47,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678741755] [2021-05-22 02:02:47,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:48,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:48,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:48,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678741755] [2021-05-22 02:02:48,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678741755] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:48,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:48,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:48,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799596119] [2021-05-22 02:02:48,005 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:48,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:48,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:48,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:48,005 INFO L87 Difference]: Start difference. First operand 5263 states and 24857 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:48,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:48,119 INFO L93 Difference]: Finished difference Result 12333 states and 55121 transitions. [2021-05-22 02:02:48,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:48,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:48,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:48,151 INFO L225 Difference]: With dead ends: 12333 [2021-05-22 02:02:48,151 INFO L226 Difference]: Without dead ends: 11856 [2021-05-22 02:02:48,151 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:48,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11856 states. [2021-05-22 02:02:48,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11856 to 5341. [2021-05-22 02:02:48,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5341 states, 5340 states have (on average 4.709737827715355) internal successors, (25150), 5340 states have internal predecessors, (25150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:48,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5341 states to 5341 states and 25150 transitions. [2021-05-22 02:02:48,420 INFO L78 Accepts]: Start accepts. Automaton has 5341 states and 25150 transitions. Word has length 29 [2021-05-22 02:02:48,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:48,420 INFO L482 AbstractCegarLoop]: Abstraction has 5341 states and 25150 transitions. [2021-05-22 02:02:48,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:48,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5341 states and 25150 transitions. [2021-05-22 02:02:48,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:48,431 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:48,431 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:48,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable657 [2021-05-22 02:02:48,431 INFO L430 AbstractCegarLoop]: === Iteration 659 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:48,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:48,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1333642745, now seen corresponding path program 654 times [2021-05-22 02:02:48,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:48,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080520069] [2021-05-22 02:02:48,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:48,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:48,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080520069] [2021-05-22 02:02:48,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080520069] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:48,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:48,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:48,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159752872] [2021-05-22 02:02:48,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:48,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:48,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:48,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:48,545 INFO L87 Difference]: Start difference. First operand 5341 states and 25150 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:48,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:48,687 INFO L93 Difference]: Finished difference Result 12331 states and 55038 transitions. [2021-05-22 02:02:48,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:48,688 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:48,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:48,723 INFO L225 Difference]: With dead ends: 12331 [2021-05-22 02:02:48,723 INFO L226 Difference]: Without dead ends: 11691 [2021-05-22 02:02:48,723 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:48,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11691 states. [2021-05-22 02:02:48,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11691 to 5176. [2021-05-22 02:02:48,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 5175 states have (on average 4.742608695652174) internal successors, (24543), 5175 states have internal predecessors, (24543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:48,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 24543 transitions. [2021-05-22 02:02:48,994 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 24543 transitions. Word has length 29 [2021-05-22 02:02:48,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:48,994 INFO L482 AbstractCegarLoop]: Abstraction has 5176 states and 24543 transitions. [2021-05-22 02:02:48,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:48,994 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 24543 transitions. [2021-05-22 02:02:49,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:49,003 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:49,003 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:49,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable658 [2021-05-22 02:02:49,004 INFO L430 AbstractCegarLoop]: === Iteration 660 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:49,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:49,004 INFO L82 PathProgramCache]: Analyzing trace with hash 759508517, now seen corresponding path program 655 times [2021-05-22 02:02:49,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:49,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906697035] [2021-05-22 02:02:49,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:49,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:49,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906697035] [2021-05-22 02:02:49,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906697035] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:49,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:49,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:49,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155935323] [2021-05-22 02:02:49,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:49,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:49,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:49,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:49,108 INFO L87 Difference]: Start difference. First operand 5176 states and 24543 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:49,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:49,214 INFO L93 Difference]: Finished difference Result 12505 states and 55906 transitions. [2021-05-22 02:02:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:49,214 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:49,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:49,246 INFO L225 Difference]: With dead ends: 12505 [2021-05-22 02:02:49,247 INFO L226 Difference]: Without dead ends: 11963 [2021-05-22 02:02:49,247 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:49,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11963 states. [2021-05-22 02:02:49,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11963 to 5389. [2021-05-22 02:02:49,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5389 states, 5388 states have (on average 4.715478841870824) internal successors, (25407), 5388 states have internal predecessors, (25407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:49,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5389 states to 5389 states and 25407 transitions. [2021-05-22 02:02:49,506 INFO L78 Accepts]: Start accepts. Automaton has 5389 states and 25407 transitions. Word has length 29 [2021-05-22 02:02:49,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:49,506 INFO L482 AbstractCegarLoop]: Abstraction has 5389 states and 25407 transitions. [2021-05-22 02:02:49,506 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:49,506 INFO L276 IsEmpty]: Start isEmpty. Operand 5389 states and 25407 transitions. [2021-05-22 02:02:49,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:49,516 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:49,516 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:49,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable659 [2021-05-22 02:02:49,516 INFO L430 AbstractCegarLoop]: === Iteration 661 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:49,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:49,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1840571143, now seen corresponding path program 656 times [2021-05-22 02:02:49,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:49,516 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363632680] [2021-05-22 02:02:49,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:49,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:49,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363632680] [2021-05-22 02:02:49,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363632680] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:49,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:49,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:49,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095415971] [2021-05-22 02:02:49,648 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:49,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:49,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:49,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:49,648 INFO L87 Difference]: Start difference. First operand 5389 states and 25407 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:49,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:49,768 INFO L93 Difference]: Finished difference Result 12440 states and 55537 transitions. [2021-05-22 02:02:49,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:49,769 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:49,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:49,801 INFO L225 Difference]: With dead ends: 12440 [2021-05-22 02:02:49,801 INFO L226 Difference]: Without dead ends: 11820 [2021-05-22 02:02:49,801 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 151.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:49,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11820 states. [2021-05-22 02:02:50,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11820 to 5246. [2021-05-22 02:02:50,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5246 states, 5245 states have (on average 4.7317445185891325) internal successors, (24818), 5245 states have internal predecessors, (24818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5246 states to 5246 states and 24818 transitions. [2021-05-22 02:02:50,060 INFO L78 Accepts]: Start accepts. Automaton has 5246 states and 24818 transitions. Word has length 29 [2021-05-22 02:02:50,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:50,060 INFO L482 AbstractCegarLoop]: Abstraction has 5246 states and 24818 transitions. [2021-05-22 02:02:50,060 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:50,060 INFO L276 IsEmpty]: Start isEmpty. Operand 5246 states and 24818 transitions. [2021-05-22 02:02:50,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:50,069 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:50,069 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:50,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable660 [2021-05-22 02:02:50,069 INFO L430 AbstractCegarLoop]: === Iteration 662 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:50,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:50,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1590137401, now seen corresponding path program 657 times [2021-05-22 02:02:50,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:50,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656298008] [2021-05-22 02:02:50,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:50,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:50,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:50,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656298008] [2021-05-22 02:02:50,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656298008] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:50,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:50,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:50,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305633996] [2021-05-22 02:02:50,185 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:50,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:50,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:50,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:50,185 INFO L87 Difference]: Start difference. First operand 5246 states and 24818 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:50,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:50,293 INFO L93 Difference]: Finished difference Result 12464 states and 55697 transitions. [2021-05-22 02:02:50,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:50,293 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:50,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:50,325 INFO L225 Difference]: With dead ends: 12464 [2021-05-22 02:02:50,325 INFO L226 Difference]: Without dead ends: 11922 [2021-05-22 02:02:50,325 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:50,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11922 states. [2021-05-22 02:02:50,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11922 to 5354. [2021-05-22 02:02:50,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5354 states, 5353 states have (on average 4.711003175789277) internal successors, (25218), 5353 states have internal predecessors, (25218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:50,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5354 states to 5354 states and 25218 transitions. [2021-05-22 02:02:50,585 INFO L78 Accepts]: Start accepts. Automaton has 5354 states and 25218 transitions. Word has length 29 [2021-05-22 02:02:50,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:50,585 INFO L482 AbstractCegarLoop]: Abstraction has 5354 states and 25218 transitions. [2021-05-22 02:02:50,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:50,585 INFO L276 IsEmpty]: Start isEmpty. Operand 5354 states and 25218 transitions. [2021-05-22 02:02:50,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:50,595 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:50,595 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:50,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable661 [2021-05-22 02:02:50,595 INFO L430 AbstractCegarLoop]: === Iteration 663 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:50,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:50,595 INFO L82 PathProgramCache]: Analyzing trace with hash 197244359, now seen corresponding path program 658 times [2021-05-22 02:02:50,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:50,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373686644] [2021-05-22 02:02:50,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:50,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:50,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373686644] [2021-05-22 02:02:50,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373686644] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:50,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:50,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:50,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146183186] [2021-05-22 02:02:50,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:50,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:50,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:50,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:50,708 INFO L87 Difference]: Start difference. First operand 5354 states and 25218 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:50,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:50,822 INFO L93 Difference]: Finished difference Result 12393 states and 55314 transitions. [2021-05-22 02:02:50,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:50,822 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:50,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:50,853 INFO L225 Difference]: With dead ends: 12393 [2021-05-22 02:02:50,853 INFO L226 Difference]: Without dead ends: 11814 [2021-05-22 02:02:50,853 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:50,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11814 states. [2021-05-22 02:02:51,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11814 to 5246. [2021-05-22 02:02:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5246 states, 5245 states have (on average 4.721448999046711) internal successors, (24764), 5245 states have internal predecessors, (24764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:51,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5246 states to 5246 states and 24764 transitions. [2021-05-22 02:02:51,114 INFO L78 Accepts]: Start accepts. Automaton has 5246 states and 24764 transitions. Word has length 29 [2021-05-22 02:02:51,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:51,115 INFO L482 AbstractCegarLoop]: Abstraction has 5246 states and 24764 transitions. [2021-05-22 02:02:51,115 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:51,115 INFO L276 IsEmpty]: Start isEmpty. Operand 5246 states and 24764 transitions. [2021-05-22 02:02:51,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:51,124 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:51,124 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:51,124 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable662 [2021-05-22 02:02:51,124 INFO L430 AbstractCegarLoop]: === Iteration 664 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:51,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:51,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1202132439, now seen corresponding path program 659 times [2021-05-22 02:02:51,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:51,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899578526] [2021-05-22 02:02:51,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:51,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:51,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:51,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899578526] [2021-05-22 02:02:51,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899578526] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:51,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:51,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:51,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578386953] [2021-05-22 02:02:51,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:51,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:51,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:51,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:51,227 INFO L87 Difference]: Start difference. First operand 5246 states and 24764 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:51,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:51,343 INFO L93 Difference]: Finished difference Result 12302 states and 54983 transitions. [2021-05-22 02:02:51,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:51,343 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:51,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:51,374 INFO L225 Difference]: With dead ends: 12302 [2021-05-22 02:02:51,375 INFO L226 Difference]: Without dead ends: 11825 [2021-05-22 02:02:51,375 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:51,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11825 states. [2021-05-22 02:02:51,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11825 to 5322. [2021-05-22 02:02:51,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5322 states, 5321 states have (on average 4.7081375681262925) internal successors, (25052), 5321 states have internal predecessors, (25052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:51,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5322 states to 5322 states and 25052 transitions. [2021-05-22 02:02:51,629 INFO L78 Accepts]: Start accepts. Automaton has 5322 states and 25052 transitions. Word has length 29 [2021-05-22 02:02:51,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:51,629 INFO L482 AbstractCegarLoop]: Abstraction has 5322 states and 25052 transitions. [2021-05-22 02:02:51,629 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:51,629 INFO L276 IsEmpty]: Start isEmpty. Operand 5322 states and 25052 transitions. [2021-05-22 02:02:51,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:51,638 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:51,638 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:51,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable663 [2021-05-22 02:02:51,638 INFO L430 AbstractCegarLoop]: === Iteration 665 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:51,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:51,638 INFO L82 PathProgramCache]: Analyzing trace with hash -292527481, now seen corresponding path program 660 times [2021-05-22 02:02:51,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:51,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671233921] [2021-05-22 02:02:51,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:51,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:51,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671233921] [2021-05-22 02:02:51,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671233921] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:51,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:51,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:51,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577306955] [2021-05-22 02:02:51,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:51,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:51,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:51,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:51,740 INFO L87 Difference]: Start difference. First operand 5322 states and 25052 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:51,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:51,896 INFO L93 Difference]: Finished difference Result 12296 states and 54890 transitions. [2021-05-22 02:02:51,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:51,896 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:51,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:51,928 INFO L225 Difference]: With dead ends: 12296 [2021-05-22 02:02:51,928 INFO L226 Difference]: Without dead ends: 11679 [2021-05-22 02:02:51,928 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:52,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11679 states. [2021-05-22 02:02:52,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11679 to 5176. [2021-05-22 02:02:52,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 5175 states have (on average 4.735845410628019) internal successors, (24508), 5175 states have internal predecessors, (24508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 24508 transitions. [2021-05-22 02:02:52,182 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 24508 transitions. Word has length 29 [2021-05-22 02:02:52,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:52,182 INFO L482 AbstractCegarLoop]: Abstraction has 5176 states and 24508 transitions. [2021-05-22 02:02:52,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:52,182 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 24508 transitions. [2021-05-22 02:02:52,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:52,191 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:52,191 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:52,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable664 [2021-05-22 02:02:52,191 INFO L430 AbstractCegarLoop]: === Iteration 666 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:52,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:52,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1485497799, now seen corresponding path program 661 times [2021-05-22 02:02:52,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:52,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744576003] [2021-05-22 02:02:52,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:52,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:52,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:52,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744576003] [2021-05-22 02:02:52,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744576003] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:52,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:52,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:52,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740379743] [2021-05-22 02:02:52,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:52,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:52,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:52,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:52,292 INFO L87 Difference]: Start difference. First operand 5176 states and 24508 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:52,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:52,398 INFO L93 Difference]: Finished difference Result 12419 states and 55567 transitions. [2021-05-22 02:02:52,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:52,398 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:52,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:52,431 INFO L225 Difference]: With dead ends: 12419 [2021-05-22 02:02:52,431 INFO L226 Difference]: Without dead ends: 11877 [2021-05-22 02:02:52,431 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 105.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:52,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11877 states. [2021-05-22 02:02:52,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11877 to 5340. [2021-05-22 02:02:52,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5340 states, 5339 states have (on average 4.7188612099644125) internal successors, (25194), 5339 states have internal predecessors, (25194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:52,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5340 states to 5340 states and 25194 transitions. [2021-05-22 02:02:52,689 INFO L78 Accepts]: Start accepts. Automaton has 5340 states and 25194 transitions. Word has length 29 [2021-05-22 02:02:52,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:52,689 INFO L482 AbstractCegarLoop]: Abstraction has 5340 states and 25194 transitions. [2021-05-22 02:02:52,689 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:52,689 INFO L276 IsEmpty]: Start isEmpty. Operand 5340 states and 25194 transitions. [2021-05-22 02:02:52,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:52,698 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:52,698 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:52,698 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable665 [2021-05-22 02:02:52,698 INFO L430 AbstractCegarLoop]: === Iteration 667 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:52,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:52,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1535065543, now seen corresponding path program 662 times [2021-05-22 02:02:52,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:52,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390480044] [2021-05-22 02:02:52,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:52,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:52,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390480044] [2021-05-22 02:02:52,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390480044] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:52,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:52,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:52,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094544393] [2021-05-22 02:02:52,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:52,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:52,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:52,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:52,798 INFO L87 Difference]: Start difference. First operand 5340 states and 25194 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:52,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:52,914 INFO L93 Difference]: Finished difference Result 12352 states and 55194 transitions. [2021-05-22 02:02:52,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:52,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:52,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:52,947 INFO L225 Difference]: With dead ends: 12352 [2021-05-22 02:02:52,947 INFO L226 Difference]: Without dead ends: 11767 [2021-05-22 02:02:52,947 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:53,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11767 states. [2021-05-22 02:02:53,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11767 to 5230. [2021-05-22 02:02:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5230 states, 5229 states have (on average 4.730349971313827) internal successors, (24735), 5229 states have internal predecessors, (24735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:53,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5230 states to 5230 states and 24735 transitions. [2021-05-22 02:02:53,200 INFO L78 Accepts]: Start accepts. Automaton has 5230 states and 24735 transitions. Word has length 29 [2021-05-22 02:02:53,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:53,200 INFO L482 AbstractCegarLoop]: Abstraction has 5230 states and 24735 transitions. [2021-05-22 02:02:53,201 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:53,201 INFO L276 IsEmpty]: Start isEmpty. Operand 5230 states and 24735 transitions. [2021-05-22 02:02:53,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:53,209 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:53,210 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:53,210 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable666 [2021-05-22 02:02:53,210 INFO L430 AbstractCegarLoop]: === Iteration 668 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:53,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:53,210 INFO L82 PathProgramCache]: Analyzing trace with hash -537563739, now seen corresponding path program 663 times [2021-05-22 02:02:53,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:53,210 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824544462] [2021-05-22 02:02:53,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:53,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:53,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:53,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824544462] [2021-05-22 02:02:53,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824544462] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:53,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:53,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:53,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200509187] [2021-05-22 02:02:53,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:53,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:53,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:53,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:53,321 INFO L87 Difference]: Start difference. First operand 5230 states and 24735 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:53,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:53,429 INFO L93 Difference]: Finished difference Result 12413 states and 55494 transitions. [2021-05-22 02:02:53,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:53,430 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:53,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:53,461 INFO L225 Difference]: With dead ends: 12413 [2021-05-22 02:02:53,461 INFO L226 Difference]: Without dead ends: 11871 [2021-05-22 02:02:53,461 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:53,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11871 states. [2021-05-22 02:02:53,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11871 to 5338. [2021-05-22 02:02:53,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5337 states have (on average 4.709574667416152) internal successors, (25135), 5337 states have internal predecessors, (25135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:53,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 25135 transitions. [2021-05-22 02:02:53,721 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 25135 transitions. Word has length 29 [2021-05-22 02:02:53,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:53,721 INFO L482 AbstractCegarLoop]: Abstraction has 5338 states and 25135 transitions. [2021-05-22 02:02:53,721 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:53,721 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 25135 transitions. [2021-05-22 02:02:53,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:53,730 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:53,730 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:53,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable667 [2021-05-22 02:02:53,730 INFO L430 AbstractCegarLoop]: === Iteration 669 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:53,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:53,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1725096505, now seen corresponding path program 664 times [2021-05-22 02:02:53,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:53,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245183257] [2021-05-22 02:02:53,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:53,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:53,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:53,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245183257] [2021-05-22 02:02:53,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245183257] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:53,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:53,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:53,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329653343] [2021-05-22 02:02:53,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:53,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:53,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:53,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:53,841 INFO L87 Difference]: Start difference. First operand 5338 states and 25135 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:53,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:53,968 INFO L93 Difference]: Finished difference Result 12342 states and 55111 transitions. [2021-05-22 02:02:53,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:53,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:53,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:54,002 INFO L225 Difference]: With dead ends: 12342 [2021-05-22 02:02:54,002 INFO L226 Difference]: Without dead ends: 11763 [2021-05-22 02:02:54,002 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:54,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11763 states. [2021-05-22 02:02:54,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11763 to 5230. [2021-05-22 02:02:54,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5230 states, 5229 states have (on average 4.720022948938611) internal successors, (24681), 5229 states have internal predecessors, (24681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:54,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5230 states to 5230 states and 24681 transitions. [2021-05-22 02:02:54,259 INFO L78 Accepts]: Start accepts. Automaton has 5230 states and 24681 transitions. Word has length 29 [2021-05-22 02:02:54,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:54,259 INFO L482 AbstractCegarLoop]: Abstraction has 5230 states and 24681 transitions. [2021-05-22 02:02:54,259 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:54,259 INFO L276 IsEmpty]: Start isEmpty. Operand 5230 states and 24681 transitions. [2021-05-22 02:02:54,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:54,268 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:54,268 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:54,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable668 [2021-05-22 02:02:54,268 INFO L430 AbstractCegarLoop]: === Iteration 670 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:54,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:54,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1222018503, now seen corresponding path program 665 times [2021-05-22 02:02:54,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:54,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097763034] [2021-05-22 02:02:54,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:54,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:54,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097763034] [2021-05-22 02:02:54,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097763034] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:54,368 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:54,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:54,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480396505] [2021-05-22 02:02:54,369 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:54,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:54,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:54,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:54,369 INFO L87 Difference]: Start difference. First operand 5230 states and 24681 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:54,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:54,483 INFO L93 Difference]: Finished difference Result 12247 states and 54770 transitions. [2021-05-22 02:02:54,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:54,483 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:54,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:54,515 INFO L225 Difference]: With dead ends: 12247 [2021-05-22 02:02:54,515 INFO L226 Difference]: Without dead ends: 11772 [2021-05-22 02:02:54,515 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:54,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11772 states. [2021-05-22 02:02:54,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11772 to 5306. [2021-05-22 02:02:54,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5306 states, 5305 states have (on average 4.706691800188501) internal successors, (24969), 5305 states have internal predecessors, (24969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:54,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5306 states to 5306 states and 24969 transitions. [2021-05-22 02:02:54,776 INFO L78 Accepts]: Start accepts. Automaton has 5306 states and 24969 transitions. Word has length 29 [2021-05-22 02:02:54,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:54,776 INFO L482 AbstractCegarLoop]: Abstraction has 5306 states and 24969 transitions. [2021-05-22 02:02:54,776 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:54,776 INFO L276 IsEmpty]: Start isEmpty. Operand 5306 states and 24969 transitions. [2021-05-22 02:02:54,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:54,785 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:54,785 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:54,785 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable669 [2021-05-22 02:02:54,785 INFO L430 AbstractCegarLoop]: === Iteration 671 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:54,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:54,786 INFO L82 PathProgramCache]: Analyzing trace with hash 375221541, now seen corresponding path program 666 times [2021-05-22 02:02:54,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:54,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890814511] [2021-05-22 02:02:54,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:54,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:54,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:54,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890814511] [2021-05-22 02:02:54,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890814511] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:54,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:54,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:54,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378743706] [2021-05-22 02:02:54,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:54,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:54,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:54,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:54,888 INFO L87 Difference]: Start difference. First operand 5306 states and 24969 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:55,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:55,018 INFO L93 Difference]: Finished difference Result 12243 states and 54682 transitions. [2021-05-22 02:02:55,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:55,018 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:55,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:55,049 INFO L225 Difference]: With dead ends: 12243 [2021-05-22 02:02:55,050 INFO L226 Difference]: Without dead ends: 11642 [2021-05-22 02:02:55,050 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:55,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11642 states. [2021-05-22 02:02:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11642 to 5176. [2021-05-22 02:02:55,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 5175 states have (on average 4.730628019323672) internal successors, (24481), 5175 states have internal predecessors, (24481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:55,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 24481 transitions. [2021-05-22 02:02:55,311 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 24481 transitions. Word has length 29 [2021-05-22 02:02:55,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:55,311 INFO L482 AbstractCegarLoop]: Abstraction has 5176 states and 24481 transitions. [2021-05-22 02:02:55,311 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:55,311 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 24481 transitions. [2021-05-22 02:02:55,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:55,321 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:55,321 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:55,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable670 [2021-05-22 02:02:55,321 INFO L430 AbstractCegarLoop]: === Iteration 672 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:55,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:55,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1565018537, now seen corresponding path program 667 times [2021-05-22 02:02:55,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:55,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557528639] [2021-05-22 02:02:55,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:55,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:55,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557528639] [2021-05-22 02:02:55,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557528639] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:55,426 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:55,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:55,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418593747] [2021-05-22 02:02:55,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:55,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:55,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:55,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:55,427 INFO L87 Difference]: Start difference. First operand 5176 states and 24481 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:55,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:55,565 INFO L93 Difference]: Finished difference Result 12112 states and 54254 transitions. [2021-05-22 02:02:55,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:55,566 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:55,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:55,598 INFO L225 Difference]: With dead ends: 12112 [2021-05-22 02:02:55,598 INFO L226 Difference]: Without dead ends: 11635 [2021-05-22 02:02:55,598 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:55,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11635 states. [2021-05-22 02:02:55,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11635 to 5292. [2021-05-22 02:02:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5292 states, 5291 states have (on average 4.72027972027972) internal successors, (24975), 5291 states have internal predecessors, (24975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:55,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 24975 transitions. [2021-05-22 02:02:55,861 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 24975 transitions. Word has length 29 [2021-05-22 02:02:55,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:55,861 INFO L482 AbstractCegarLoop]: Abstraction has 5292 states and 24975 transitions. [2021-05-22 02:02:55,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:55,861 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 24975 transitions. [2021-05-22 02:02:55,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:55,870 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:55,870 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:55,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable671 [2021-05-22 02:02:55,871 INFO L430 AbstractCegarLoop]: === Iteration 673 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:55,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:55,871 INFO L82 PathProgramCache]: Analyzing trace with hash -551061113, now seen corresponding path program 668 times [2021-05-22 02:02:55,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:55,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89843637] [2021-05-22 02:02:55,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:55,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:55,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:55,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89843637] [2021-05-22 02:02:55,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89843637] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:55,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:55,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:55,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981589251] [2021-05-22 02:02:55,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:55,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:55,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:55,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:55,972 INFO L87 Difference]: Start difference. First operand 5292 states and 24975 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:56,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:56,100 INFO L93 Difference]: Finished difference Result 12110 states and 54171 transitions. [2021-05-22 02:02:56,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:56,101 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:56,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:56,131 INFO L225 Difference]: With dead ends: 12110 [2021-05-22 02:02:56,131 INFO L226 Difference]: Without dead ends: 11557 [2021-05-22 02:02:56,131 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:56,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11557 states. [2021-05-22 02:02:56,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11557 to 5214. [2021-05-22 02:02:56,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5214 states, 5213 states have (on average 4.727412238634184) internal successors, (24644), 5213 states have internal predecessors, (24644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:56,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 24644 transitions. [2021-05-22 02:02:56,386 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 24644 transitions. Word has length 29 [2021-05-22 02:02:56,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:56,386 INFO L482 AbstractCegarLoop]: Abstraction has 5214 states and 24644 transitions. [2021-05-22 02:02:56,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:56,386 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 24644 transitions. [2021-05-22 02:02:56,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:56,395 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:56,395 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:56,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable672 [2021-05-22 02:02:56,396 INFO L430 AbstractCegarLoop]: === Iteration 674 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:56,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:56,396 INFO L82 PathProgramCache]: Analyzing trace with hash -458043001, now seen corresponding path program 669 times [2021-05-22 02:02:56,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:56,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981510897] [2021-05-22 02:02:56,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:56,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:56,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:56,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981510897] [2021-05-22 02:02:56,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981510897] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:56,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:56,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:56,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682011293] [2021-05-22 02:02:56,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:56,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:56,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:56,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:56,497 INFO L87 Difference]: Start difference. First operand 5214 states and 24644 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:56,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:56,607 INFO L93 Difference]: Finished difference Result 12106 states and 54197 transitions. [2021-05-22 02:02:56,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:56,607 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:56,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:56,639 INFO L225 Difference]: With dead ends: 12106 [2021-05-22 02:02:56,639 INFO L226 Difference]: Without dead ends: 11629 [2021-05-22 02:02:56,639 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:56,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11629 states. [2021-05-22 02:02:56,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11629 to 5290. [2021-05-22 02:02:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 5289 states have (on average 4.713934581206277) internal successors, (24932), 5289 states have internal predecessors, (24932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:56,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 24932 transitions. [2021-05-22 02:02:56,901 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 24932 transitions. Word has length 29 [2021-05-22 02:02:56,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:56,901 INFO L482 AbstractCegarLoop]: Abstraction has 5290 states and 24932 transitions. [2021-05-22 02:02:56,901 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:56,901 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 24932 transitions. [2021-05-22 02:02:56,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:56,911 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:56,911 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:56,911 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable673 [2021-05-22 02:02:56,911 INFO L430 AbstractCegarLoop]: === Iteration 675 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:56,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:56,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1771614727, now seen corresponding path program 670 times [2021-05-22 02:02:56,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:56,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714929208] [2021-05-22 02:02:56,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:57,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:57,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:57,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714929208] [2021-05-22 02:02:57,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714929208] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:57,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:57,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:57,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803069674] [2021-05-22 02:02:57,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:57,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:57,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:57,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:57,012 INFO L87 Difference]: Start difference. First operand 5290 states and 24932 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:57,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:57,125 INFO L93 Difference]: Finished difference Result 12100 states and 54104 transitions. [2021-05-22 02:02:57,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:57,125 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:57,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:57,156 INFO L225 Difference]: With dead ends: 12100 [2021-05-22 02:02:57,156 INFO L226 Difference]: Without dead ends: 11553 [2021-05-22 02:02:57,157 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:57,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11553 states. [2021-05-22 02:02:57,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11553 to 5214. [2021-05-22 02:02:57,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5214 states, 5213 states have (on average 4.720122769998082) internal successors, (24606), 5213 states have internal predecessors, (24606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:57,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 24606 transitions. [2021-05-22 02:02:57,414 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 24606 transitions. Word has length 29 [2021-05-22 02:02:57,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:57,414 INFO L482 AbstractCegarLoop]: Abstraction has 5214 states and 24606 transitions. [2021-05-22 02:02:57,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:57,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 24606 transitions. [2021-05-22 02:02:57,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:57,423 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:57,424 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:57,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable674 [2021-05-22 02:02:57,424 INFO L430 AbstractCegarLoop]: === Iteration 676 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:57,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:57,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1700942437, now seen corresponding path program 671 times [2021-05-22 02:02:57,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:57,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614174018] [2021-05-22 02:02:57,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:57,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:57,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614174018] [2021-05-22 02:02:57,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614174018] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:57,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:57,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:57,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255910176] [2021-05-22 02:02:57,538 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:57,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:57,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:57,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:57,538 INFO L87 Difference]: Start difference. First operand 5214 states and 24606 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:57,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:57,654 INFO L93 Difference]: Finished difference Result 12102 states and 54149 transitions. [2021-05-22 02:02:57,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:57,654 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:57,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:57,685 INFO L225 Difference]: With dead ends: 12102 [2021-05-22 02:02:57,685 INFO L226 Difference]: Without dead ends: 11627 [2021-05-22 02:02:57,685 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:57,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11627 states. [2021-05-22 02:02:57,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11627 to 5290. [2021-05-22 02:02:57,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 5289 states have (on average 4.706749858196257) internal successors, (24894), 5289 states have internal predecessors, (24894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:57,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 24894 transitions. [2021-05-22 02:02:57,933 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 24894 transitions. Word has length 29 [2021-05-22 02:02:57,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:57,933 INFO L482 AbstractCegarLoop]: Abstraction has 5290 states and 24894 transitions. [2021-05-22 02:02:57,933 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:57,933 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 24894 transitions. [2021-05-22 02:02:57,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:57,942 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:57,942 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:57,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable675 [2021-05-22 02:02:57,942 INFO L430 AbstractCegarLoop]: === Iteration 677 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:57,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:57,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1220040391, now seen corresponding path program 672 times [2021-05-22 02:02:57,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:57,943 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596580559] [2021-05-22 02:02:57,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:58,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:58,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596580559] [2021-05-22 02:02:58,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596580559] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:58,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:58,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:58,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652222553] [2021-05-22 02:02:58,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:58,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:58,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:58,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:58,044 INFO L87 Difference]: Start difference. First operand 5290 states and 24894 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:58,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:58,159 INFO L93 Difference]: Finished difference Result 12098 states and 54061 transitions. [2021-05-22 02:02:58,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:58,160 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:58,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:58,191 INFO L225 Difference]: With dead ends: 12098 [2021-05-22 02:02:58,191 INFO L226 Difference]: Without dead ends: 11462 [2021-05-22 02:02:58,191 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:58,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11462 states. [2021-05-22 02:02:58,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11462 to 5125. [2021-05-22 02:02:58,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5124 states have (on average 4.747462919594067) internal successors, (24326), 5124 states have internal predecessors, (24326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:58,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 24326 transitions. [2021-05-22 02:02:58,451 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 24326 transitions. Word has length 29 [2021-05-22 02:02:58,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:58,451 INFO L482 AbstractCegarLoop]: Abstraction has 5125 states and 24326 transitions. [2021-05-22 02:02:58,451 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:58,451 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 24326 transitions. [2021-05-22 02:02:58,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:58,460 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:58,460 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:58,460 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable676 [2021-05-22 02:02:58,460 INFO L430 AbstractCegarLoop]: === Iteration 678 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:58,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:58,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1588520663, now seen corresponding path program 673 times [2021-05-22 02:02:58,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:58,460 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938373342] [2021-05-22 02:02:58,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:58,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:58,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938373342] [2021-05-22 02:02:58,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938373342] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:58,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:58,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:58,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305483028] [2021-05-22 02:02:58,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:58,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:58,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:58,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:58,607 INFO L87 Difference]: Start difference. First operand 5125 states and 24326 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:58,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:58,703 INFO L93 Difference]: Finished difference Result 11898 states and 53248 transitions. [2021-05-22 02:02:58,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:58,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:58,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:58,733 INFO L225 Difference]: With dead ends: 11898 [2021-05-22 02:02:58,733 INFO L226 Difference]: Without dead ends: 11356 [2021-05-22 02:02:58,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 151.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:58,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11356 states. [2021-05-22 02:02:58,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11356 to 5265. [2021-05-22 02:02:58,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 5264 states have (on average 4.7359422492401215) internal successors, (24930), 5264 states have internal predecessors, (24930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:58,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 24930 transitions. [2021-05-22 02:02:58,982 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 24930 transitions. Word has length 29 [2021-05-22 02:02:58,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:58,982 INFO L482 AbstractCegarLoop]: Abstraction has 5265 states and 24930 transitions. [2021-05-22 02:02:58,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:58,982 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 24930 transitions. [2021-05-22 02:02:58,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:58,991 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:58,991 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:58,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable677 [2021-05-22 02:02:58,991 INFO L430 AbstractCegarLoop]: === Iteration 679 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:58,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:58,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1018200361, now seen corresponding path program 674 times [2021-05-22 02:02:58,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:58,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490077092] [2021-05-22 02:02:58,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:59,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:59,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:59,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490077092] [2021-05-22 02:02:59,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490077092] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:59,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:59,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:59,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974394953] [2021-05-22 02:02:59,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:59,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:59,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:59,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:59,112 INFO L87 Difference]: Start difference. First operand 5265 states and 24930 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:59,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:59,206 INFO L93 Difference]: Finished difference Result 11771 states and 52641 transitions. [2021-05-22 02:02:59,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:59,207 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:59,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:59,236 INFO L225 Difference]: With dead ends: 11771 [2021-05-22 02:02:59,237 INFO L226 Difference]: Without dead ends: 11276 [2021-05-22 02:02:59,237 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:59,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11276 states. [2021-05-22 02:02:59,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11276 to 5185. [2021-05-22 02:02:59,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.745756172839506) internal successors, (24602), 5184 states have internal predecessors, (24602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:59,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24602 transitions. [2021-05-22 02:02:59,484 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24602 transitions. Word has length 29 [2021-05-22 02:02:59,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:59,484 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24602 transitions. [2021-05-22 02:02:59,484 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:59,485 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24602 transitions. [2021-05-22 02:02:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:02:59,493 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:02:59,493 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:02:59,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable678 [2021-05-22 02:02:59,494 INFO L430 AbstractCegarLoop]: === Iteration 680 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:02:59,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:02:59,494 INFO L82 PathProgramCache]: Analyzing trace with hash 683385095, now seen corresponding path program 675 times [2021-05-22 02:02:59,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:02:59,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879451289] [2021-05-22 02:02:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:02:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:02:59,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:02:59,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:02:59,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879451289] [2021-05-22 02:02:59,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879451289] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:02:59,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:02:59,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:02:59,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898127406] [2021-05-22 02:02:59,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:02:59,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:02:59,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:02:59,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:02:59,614 INFO L87 Difference]: Start difference. First operand 5185 states and 24602 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:59,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:02:59,710 INFO L93 Difference]: Finished difference Result 11988 states and 53619 transitions. [2021-05-22 02:02:59,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:02:59,710 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:02:59,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:02:59,740 INFO L225 Difference]: With dead ends: 11988 [2021-05-22 02:02:59,740 INFO L226 Difference]: Without dead ends: 11446 [2021-05-22 02:02:59,740 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:02:59,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11446 states. [2021-05-22 02:02:59,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11446 to 5295. [2021-05-22 02:02:59,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5295 states, 5294 states have (on average 4.723649414431431) internal successors, (25007), 5294 states have internal predecessors, (25007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:59,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 25007 transitions. [2021-05-22 02:02:59,996 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 25007 transitions. Word has length 29 [2021-05-22 02:02:59,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:02:59,996 INFO L482 AbstractCegarLoop]: Abstraction has 5295 states and 25007 transitions. [2021-05-22 02:02:59,996 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:02:59,996 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 25007 transitions. [2021-05-22 02:03:00,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:00,005 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:00,005 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:00,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable679 [2021-05-22 02:03:00,005 INFO L430 AbstractCegarLoop]: === Iteration 681 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:00,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:00,005 INFO L82 PathProgramCache]: Analyzing trace with hash 2053005609, now seen corresponding path program 676 times [2021-05-22 02:03:00,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:00,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525070301] [2021-05-22 02:03:00,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:00,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:00,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:00,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:00,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525070301] [2021-05-22 02:03:00,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525070301] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:00,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:00,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:00,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312604702] [2021-05-22 02:03:00,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:00,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:00,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:00,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:00,118 INFO L87 Difference]: Start difference. First operand 5295 states and 25007 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:00,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:00,230 INFO L93 Difference]: Finished difference Result 11921 states and 53246 transitions. [2021-05-22 02:03:00,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:00,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:00,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:00,259 INFO L225 Difference]: With dead ends: 11921 [2021-05-22 02:03:00,259 INFO L226 Difference]: Without dead ends: 11336 [2021-05-22 02:03:00,259 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:00,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11336 states. [2021-05-22 02:03:00,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11336 to 5185. [2021-05-22 02:03:00,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.73804012345679) internal successors, (24562), 5184 states have internal predecessors, (24562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:00,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24562 transitions. [2021-05-22 02:03:00,504 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24562 transitions. Word has length 29 [2021-05-22 02:03:00,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:00,504 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24562 transitions. [2021-05-22 02:03:00,504 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:00,504 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24562 transitions. [2021-05-22 02:03:00,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:00,513 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:00,513 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:00,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable680 [2021-05-22 02:03:00,513 INFO L430 AbstractCegarLoop]: === Iteration 682 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:00,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:00,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1408162089, now seen corresponding path program 677 times [2021-05-22 02:03:00,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:00,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464849790] [2021-05-22 02:03:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:00,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:00,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464849790] [2021-05-22 02:03:00,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464849790] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:00,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:00,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:00,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605813704] [2021-05-22 02:03:00,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:00,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:00,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:00,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:00,642 INFO L87 Difference]: Start difference. First operand 5185 states and 24562 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:00,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:00,740 INFO L93 Difference]: Finished difference Result 11672 states and 52234 transitions. [2021-05-22 02:03:00,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:00,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:00,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:00,769 INFO L225 Difference]: With dead ends: 11672 [2021-05-22 02:03:00,769 INFO L226 Difference]: Without dead ends: 11257 [2021-05-22 02:03:00,769 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:00,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11257 states. [2021-05-22 02:03:00,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11257 to 5233. [2021-05-22 02:03:00,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 4.728211009174312) internal successors, (24738), 5232 states have internal predecessors, (24738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:01,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 24738 transitions. [2021-05-22 02:03:01,010 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 24738 transitions. Word has length 29 [2021-05-22 02:03:01,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:01,010 INFO L482 AbstractCegarLoop]: Abstraction has 5233 states and 24738 transitions. [2021-05-22 02:03:01,010 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:01,010 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 24738 transitions. [2021-05-22 02:03:01,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:01,019 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:01,019 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:01,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable681 [2021-05-22 02:03:01,019 INFO L430 AbstractCegarLoop]: === Iteration 683 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:01,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:01,019 INFO L82 PathProgramCache]: Analyzing trace with hash 561365127, now seen corresponding path program 678 times [2021-05-22 02:03:01,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:01,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512163237] [2021-05-22 02:03:01,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:01,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:01,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:01,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512163237] [2021-05-22 02:03:01,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512163237] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:01,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:01,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:01,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362077803] [2021-05-22 02:03:01,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:01,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:01,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:01,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:01,142 INFO L87 Difference]: Start difference. First operand 5233 states and 24738 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:01,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:01,256 INFO L93 Difference]: Finished difference Result 11732 states and 52450 transitions. [2021-05-22 02:03:01,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:01,256 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:01,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:01,284 INFO L225 Difference]: With dead ends: 11732 [2021-05-22 02:03:01,284 INFO L226 Difference]: Without dead ends: 11169 [2021-05-22 02:03:01,284 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:01,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11169 states. [2021-05-22 02:03:01,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11169 to 5145. [2021-05-22 02:03:01,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.746889580093312) internal successors, (24418), 5144 states have internal predecessors, (24418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:01,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24418 transitions. [2021-05-22 02:03:01,524 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24418 transitions. Word has length 29 [2021-05-22 02:03:01,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:01,524 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24418 transitions. [2021-05-22 02:03:01,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:01,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24418 transitions. [2021-05-22 02:03:01,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:01,532 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:01,532 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:01,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable682 [2021-05-22 02:03:01,532 INFO L430 AbstractCegarLoop]: === Iteration 684 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:01,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:01,533 INFO L82 PathProgramCache]: Analyzing trace with hash -130473593, now seen corresponding path program 679 times [2021-05-22 02:03:01,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:01,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028244394] [2021-05-22 02:03:01,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:01,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:01,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028244394] [2021-05-22 02:03:01,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028244394] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:01,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:01,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:01,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295655346] [2021-05-22 02:03:01,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:01,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:01,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:01,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:01,655 INFO L87 Difference]: Start difference. First operand 5145 states and 24418 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:01,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:01,753 INFO L93 Difference]: Finished difference Result 11892 states and 53209 transitions. [2021-05-22 02:03:01,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:01,753 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:01,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:01,782 INFO L225 Difference]: With dead ends: 11892 [2021-05-22 02:03:01,782 INFO L226 Difference]: Without dead ends: 11350 [2021-05-22 02:03:01,782 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:01,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11350 states. [2021-05-22 02:03:02,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11350 to 5265. [2021-05-22 02:03:02,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 5264 states have (on average 4.732142857142857) internal successors, (24910), 5264 states have internal predecessors, (24910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:02,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 24910 transitions. [2021-05-22 02:03:02,030 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 24910 transitions. Word has length 29 [2021-05-22 02:03:02,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:02,030 INFO L482 AbstractCegarLoop]: Abstraction has 5265 states and 24910 transitions. [2021-05-22 02:03:02,030 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:02,030 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 24910 transitions. [2021-05-22 02:03:02,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:02,039 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:02,039 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:02,039 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable683 [2021-05-22 02:03:02,039 INFO L430 AbstractCegarLoop]: === Iteration 685 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:02,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:02,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1818719865, now seen corresponding path program 680 times [2021-05-22 02:03:02,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:02,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346472973] [2021-05-22 02:03:02,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:02,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:02,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:02,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346472973] [2021-05-22 02:03:02,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346472973] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:02,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:02,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:02,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12028540] [2021-05-22 02:03:02,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:02,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:02,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:02,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:02,211 INFO L87 Difference]: Start difference. First operand 5265 states and 24910 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:02,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:02,306 INFO L93 Difference]: Finished difference Result 11765 states and 52602 transitions. [2021-05-22 02:03:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:02,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:02,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:02,336 INFO L225 Difference]: With dead ends: 11765 [2021-05-22 02:03:02,337 INFO L226 Difference]: Without dead ends: 11270 [2021-05-22 02:03:02,337 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 175.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:02,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11270 states. [2021-05-22 02:03:02,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11270 to 5185. [2021-05-22 02:03:02,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.741898148148148) internal successors, (24582), 5184 states have internal predecessors, (24582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:02,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24582 transitions. [2021-05-22 02:03:02,581 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24582 transitions. Word has length 29 [2021-05-22 02:03:02,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:02,581 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24582 transitions. [2021-05-22 02:03:02,581 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:02,581 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24582 transitions. [2021-05-22 02:03:02,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:02,590 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:02,590 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:02,590 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable684 [2021-05-22 02:03:02,590 INFO L430 AbstractCegarLoop]: === Iteration 686 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:02,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:02,590 INFO L82 PathProgramCache]: Analyzing trace with hash -608126585, now seen corresponding path program 681 times [2021-05-22 02:03:02,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:02,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100724550] [2021-05-22 02:03:02,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:02,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:02,712 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:02,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100724550] [2021-05-22 02:03:02,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100724550] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:02,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:02,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:02,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961223378] [2021-05-22 02:03:02,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:02,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:02,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:02,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:02,713 INFO L87 Difference]: Start difference. First operand 5185 states and 24582 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:02,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:02,812 INFO L93 Difference]: Finished difference Result 11976 states and 53561 transitions. [2021-05-22 02:03:02,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:02,813 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:02,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:02,841 INFO L225 Difference]: With dead ends: 11976 [2021-05-22 02:03:02,842 INFO L226 Difference]: Without dead ends: 11434 [2021-05-22 02:03:02,842 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:02,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11434 states. [2021-05-22 02:03:03,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11434 to 5293. [2021-05-22 02:03:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5293 states, 5292 states have (on average 4.720710506424792) internal successors, (24982), 5292 states have internal predecessors, (24982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:03,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 24982 transitions. [2021-05-22 02:03:03,088 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 24982 transitions. Word has length 29 [2021-05-22 02:03:03,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:03,088 INFO L482 AbstractCegarLoop]: Abstraction has 5293 states and 24982 transitions. [2021-05-22 02:03:03,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:03,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 24982 transitions. [2021-05-22 02:03:03,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:03,098 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:03,098 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:03,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable685 [2021-05-22 02:03:03,098 INFO L430 AbstractCegarLoop]: === Iteration 687 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:03,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:03,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1806250281, now seen corresponding path program 682 times [2021-05-22 02:03:03,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:03,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191957137] [2021-05-22 02:03:03,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:03,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:03,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:03,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191957137] [2021-05-22 02:03:03,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191957137] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:03,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:03,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:03,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198059489] [2021-05-22 02:03:03,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:03,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:03,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:03,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:03,223 INFO L87 Difference]: Start difference. First operand 5293 states and 24982 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:03,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:03,341 INFO L93 Difference]: Finished difference Result 11905 states and 53178 transitions. [2021-05-22 02:03:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:03,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:03,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:03,372 INFO L225 Difference]: With dead ends: 11905 [2021-05-22 02:03:03,372 INFO L226 Difference]: Without dead ends: 11326 [2021-05-22 02:03:03,372 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:03,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11326 states. [2021-05-22 02:03:03,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11326 to 5185. [2021-05-22 02:03:03,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.734182098765432) internal successors, (24542), 5184 states have internal predecessors, (24542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:03,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24542 transitions. [2021-05-22 02:03:03,611 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24542 transitions. Word has length 29 [2021-05-22 02:03:03,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:03,611 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24542 transitions. [2021-05-22 02:03:03,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:03,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24542 transitions. [2021-05-22 02:03:03,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:03,619 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:03,619 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:03,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable686 [2021-05-22 02:03:03,619 INFO L430 AbstractCegarLoop]: === Iteration 688 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:03,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:03,619 INFO L82 PathProgramCache]: Analyzing trace with hash -576407255, now seen corresponding path program 683 times [2021-05-22 02:03:03,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:03,620 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459477810] [2021-05-22 02:03:03,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:03,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:03,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:03,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459477810] [2021-05-22 02:03:03,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459477810] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:03,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:03,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:03,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992661324] [2021-05-22 02:03:03,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:03,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:03,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:03,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:03,743 INFO L87 Difference]: Start difference. First operand 5185 states and 24542 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:03,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:03,835 INFO L93 Difference]: Finished difference Result 11662 states and 52183 transitions. [2021-05-22 02:03:03,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:03,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:03,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:03,864 INFO L225 Difference]: With dead ends: 11662 [2021-05-22 02:03:03,864 INFO L226 Difference]: Without dead ends: 11247 [2021-05-22 02:03:03,864 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:03,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11247 states. [2021-05-22 02:03:04,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11247 to 5233. [2021-05-22 02:03:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 4.724388379204893) internal successors, (24718), 5232 states have internal predecessors, (24718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:04,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 24718 transitions. [2021-05-22 02:03:04,109 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 24718 transitions. Word has length 29 [2021-05-22 02:03:04,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:04,110 INFO L482 AbstractCegarLoop]: Abstraction has 5233 states and 24718 transitions. [2021-05-22 02:03:04,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:04,110 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 24718 transitions. [2021-05-22 02:03:04,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:04,118 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:04,119 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:04,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable687 [2021-05-22 02:03:04,119 INFO L430 AbstractCegarLoop]: === Iteration 689 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:04,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:04,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1602480391, now seen corresponding path program 684 times [2021-05-22 02:03:04,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:04,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912066531] [2021-05-22 02:03:04,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:04,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:04,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:04,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912066531] [2021-05-22 02:03:04,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912066531] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:04,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:04,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:04,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585377866] [2021-05-22 02:03:04,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:04,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:04,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:04,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:04,242 INFO L87 Difference]: Start difference. First operand 5233 states and 24718 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:04,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:04,401 INFO L93 Difference]: Finished difference Result 11718 states and 52387 transitions. [2021-05-22 02:03:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:04,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:04,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:04,439 INFO L225 Difference]: With dead ends: 11718 [2021-05-22 02:03:04,439 INFO L226 Difference]: Without dead ends: 11159 [2021-05-22 02:03:04,439 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 166.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:04,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11159 states. [2021-05-22 02:03:04,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11159 to 5145. [2021-05-22 02:03:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.743001555209953) internal successors, (24398), 5144 states have internal predecessors, (24398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:04,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24398 transitions. [2021-05-22 02:03:04,691 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24398 transitions. Word has length 29 [2021-05-22 02:03:04,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:04,692 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24398 transitions. [2021-05-22 02:03:04,692 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:04,692 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24398 transitions. [2021-05-22 02:03:04,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:04,700 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:04,700 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:04,700 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable688 [2021-05-22 02:03:04,700 INFO L430 AbstractCegarLoop]: === Iteration 690 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:04,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:04,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1168355813, now seen corresponding path program 685 times [2021-05-22 02:03:04,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:04,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776432986] [2021-05-22 02:03:04,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:04,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:04,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:04,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776432986] [2021-05-22 02:03:04,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776432986] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:04,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:04,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:04,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598550367] [2021-05-22 02:03:04,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:04,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:04,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:04,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:04,817 INFO L87 Difference]: Start difference. First operand 5145 states and 24398 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:04,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:04,917 INFO L93 Difference]: Finished difference Result 12114 states and 54228 transitions. [2021-05-22 02:03:04,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:04,917 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:04,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:04,946 INFO L225 Difference]: With dead ends: 12114 [2021-05-22 02:03:04,946 INFO L226 Difference]: Without dead ends: 11572 [2021-05-22 02:03:04,946 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:05,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11572 states. [2021-05-22 02:03:05,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11572 to 5309. [2021-05-22 02:03:05,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 5308 states have (on average 4.72569706103994) internal successors, (25084), 5308 states have internal predecessors, (25084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:05,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 25084 transitions. [2021-05-22 02:03:05,190 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 25084 transitions. Word has length 29 [2021-05-22 02:03:05,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:05,191 INFO L482 AbstractCegarLoop]: Abstraction has 5309 states and 25084 transitions. [2021-05-22 02:03:05,191 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:05,191 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 25084 transitions. [2021-05-22 02:03:05,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:05,199 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:05,199 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:05,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable689 [2021-05-22 02:03:05,199 INFO L430 AbstractCegarLoop]: === Iteration 691 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:05,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:05,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1756990969, now seen corresponding path program 686 times [2021-05-22 02:03:05,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:05,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582588766] [2021-05-22 02:03:05,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:05,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:05,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:05,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582588766] [2021-05-22 02:03:05,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582588766] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:05,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:05,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:05,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596073461] [2021-05-22 02:03:05,304 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:05,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:05,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:05,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:05,304 INFO L87 Difference]: Start difference. First operand 5309 states and 25084 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:05,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:05,420 INFO L93 Difference]: Finished difference Result 12047 states and 53855 transitions. [2021-05-22 02:03:05,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:05,420 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:05,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:05,452 INFO L225 Difference]: With dead ends: 12047 [2021-05-22 02:03:05,453 INFO L226 Difference]: Without dead ends: 11462 [2021-05-22 02:03:05,453 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:05,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11462 states. [2021-05-22 02:03:05,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11462 to 5199. [2021-05-22 02:03:05,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 4.737398999615237) internal successors, (24625), 5198 states have internal predecessors, (24625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:05,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 24625 transitions. [2021-05-22 02:03:05,704 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 24625 transitions. Word has length 29 [2021-05-22 02:03:05,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:05,704 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 24625 transitions. [2021-05-22 02:03:05,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:05,704 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 24625 transitions. [2021-05-22 02:03:05,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:05,713 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:05,713 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:05,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable690 [2021-05-22 02:03:05,713 INFO L430 AbstractCegarLoop]: === Iteration 692 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:05,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:05,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1417009721, now seen corresponding path program 687 times [2021-05-22 02:03:05,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:05,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115091219] [2021-05-22 02:03:05,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:05,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:05,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:05,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115091219] [2021-05-22 02:03:05,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115091219] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:05,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:05,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:05,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293940131] [2021-05-22 02:03:05,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:05,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:05,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:05,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:05,830 INFO L87 Difference]: Start difference. First operand 5199 states and 24625 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:05,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:05,924 INFO L93 Difference]: Finished difference Result 12108 states and 54155 transitions. [2021-05-22 02:03:05,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:05,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:05,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:05,954 INFO L225 Difference]: With dead ends: 12108 [2021-05-22 02:03:05,954 INFO L226 Difference]: Without dead ends: 11566 [2021-05-22 02:03:05,954 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:06,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11566 states. [2021-05-22 02:03:06,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11566 to 5307. [2021-05-22 02:03:06,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5307 states, 5306 states have (on average 4.716358839050132) internal successors, (25025), 5306 states have internal predecessors, (25025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5307 states to 5307 states and 25025 transitions. [2021-05-22 02:03:06,202 INFO L78 Accepts]: Start accepts. Automaton has 5307 states and 25025 transitions. Word has length 29 [2021-05-22 02:03:06,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:06,202 INFO L482 AbstractCegarLoop]: Abstraction has 5307 states and 25025 transitions. [2021-05-22 02:03:06,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:06,202 INFO L276 IsEmpty]: Start isEmpty. Operand 5307 states and 25025 transitions. [2021-05-22 02:03:06,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:06,211 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:06,211 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:06,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable691 [2021-05-22 02:03:06,211 INFO L430 AbstractCegarLoop]: === Iteration 693 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:06,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:06,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1030669945, now seen corresponding path program 688 times [2021-05-22 02:03:06,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:06,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915809013] [2021-05-22 02:03:06,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:06,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:06,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:06,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915809013] [2021-05-22 02:03:06,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915809013] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:06,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:06,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:06,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664660731] [2021-05-22 02:03:06,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:06,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:06,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:06,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:06,328 INFO L87 Difference]: Start difference. First operand 5307 states and 25025 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:06,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:06,445 INFO L93 Difference]: Finished difference Result 12037 states and 53772 transitions. [2021-05-22 02:03:06,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:06,445 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:06,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:06,476 INFO L225 Difference]: With dead ends: 12037 [2021-05-22 02:03:06,476 INFO L226 Difference]: Without dead ends: 11458 [2021-05-22 02:03:06,476 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:06,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11458 states. [2021-05-22 02:03:06,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11458 to 5199. [2021-05-22 02:03:06,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 5198 states have (on average 4.727010388611005) internal successors, (24571), 5198 states have internal predecessors, (24571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:06,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 24571 transitions. [2021-05-22 02:03:06,726 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 24571 transitions. Word has length 29 [2021-05-22 02:03:06,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:06,726 INFO L482 AbstractCegarLoop]: Abstraction has 5199 states and 24571 transitions. [2021-05-22 02:03:06,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:06,726 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 24571 transitions. [2021-05-22 02:03:06,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:06,735 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:06,735 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:06,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable692 [2021-05-22 02:03:06,735 INFO L430 AbstractCegarLoop]: === Iteration 694 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:06,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:06,735 INFO L82 PathProgramCache]: Analyzing trace with hash -823162583, now seen corresponding path program 689 times [2021-05-22 02:03:06,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:06,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79039758] [2021-05-22 02:03:06,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:06,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:06,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:06,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79039758] [2021-05-22 02:03:06,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79039758] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:06,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:06,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:06,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486839617] [2021-05-22 02:03:06,842 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:06,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:06,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:06,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:06,842 INFO L87 Difference]: Start difference. First operand 5199 states and 24571 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:06,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:06,969 INFO L93 Difference]: Finished difference Result 11942 states and 53431 transitions. [2021-05-22 02:03:06,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:06,970 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:06,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:07,001 INFO L225 Difference]: With dead ends: 11942 [2021-05-22 02:03:07,001 INFO L226 Difference]: Without dead ends: 11467 [2021-05-22 02:03:07,001 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:07,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11467 states. [2021-05-22 02:03:07,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11467 to 5275. [2021-05-22 02:03:07,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5275 states, 5274 states have (on average 4.713500189609404) internal successors, (24859), 5274 states have internal predecessors, (24859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:07,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 24859 transitions. [2021-05-22 02:03:07,265 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 24859 transitions. Word has length 29 [2021-05-22 02:03:07,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:07,266 INFO L482 AbstractCegarLoop]: Abstraction has 5275 states and 24859 transitions. [2021-05-22 02:03:07,266 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:07,266 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 24859 transitions. [2021-05-22 02:03:07,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:07,275 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:07,275 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:07,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable693 [2021-05-22 02:03:07,275 INFO L430 AbstractCegarLoop]: === Iteration 695 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:07,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:07,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1669959545, now seen corresponding path program 690 times [2021-05-22 02:03:07,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:07,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164115792] [2021-05-22 02:03:07,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:07,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:07,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:07,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164115792] [2021-05-22 02:03:07,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164115792] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:07,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:07,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:07,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998743990] [2021-05-22 02:03:07,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:07,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:07,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:07,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:07,381 INFO L87 Difference]: Start difference. First operand 5275 states and 24859 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:07,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:07,501 INFO L93 Difference]: Finished difference Result 11938 states and 53343 transitions. [2021-05-22 02:03:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:07,502 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:07,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:07,531 INFO L225 Difference]: With dead ends: 11938 [2021-05-22 02:03:07,531 INFO L226 Difference]: Without dead ends: 11337 [2021-05-22 02:03:07,531 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:07,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11337 states. [2021-05-22 02:03:07,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11337 to 5145. [2021-05-22 02:03:07,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.739113530326594) internal successors, (24378), 5144 states have internal predecessors, (24378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:07,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24378 transitions. [2021-05-22 02:03:07,782 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24378 transitions. Word has length 29 [2021-05-22 02:03:07,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:07,783 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24378 transitions. [2021-05-22 02:03:07,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:07,783 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24378 transitions. [2021-05-22 02:03:07,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:07,791 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:07,791 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:07,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable694 [2021-05-22 02:03:07,792 INFO L430 AbstractCegarLoop]: === Iteration 696 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:07,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:07,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1217667369, now seen corresponding path program 691 times [2021-05-22 02:03:07,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:07,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499543510] [2021-05-22 02:03:07,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:07,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:07,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:07,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499543510] [2021-05-22 02:03:07,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499543510] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:07,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:07,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:07,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391487646] [2021-05-22 02:03:07,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:07,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:07,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:07,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:07,920 INFO L87 Difference]: Start difference. First operand 5145 states and 24378 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:08,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:08,024 INFO L93 Difference]: Finished difference Result 11519 states and 51604 transitions. [2021-05-22 02:03:08,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:08,024 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:08,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:08,053 INFO L225 Difference]: With dead ends: 11519 [2021-05-22 02:03:08,053 INFO L226 Difference]: Without dead ends: 11104 [2021-05-22 02:03:08,053 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:08,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11104 states. [2021-05-22 02:03:08,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11104 to 5217. [2021-05-22 02:03:08,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 4.731211656441718) internal successors, (24678), 5216 states have internal predecessors, (24678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:08,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 24678 transitions. [2021-05-22 02:03:08,314 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 24678 transitions. Word has length 29 [2021-05-22 02:03:08,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:08,314 INFO L482 AbstractCegarLoop]: Abstraction has 5217 states and 24678 transitions. [2021-05-22 02:03:08,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:08,314 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 24678 transitions. [2021-05-22 02:03:08,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:08,322 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:08,322 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:08,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable695 [2021-05-22 02:03:08,323 INFO L430 AbstractCegarLoop]: === Iteration 697 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:08,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:08,323 INFO L82 PathProgramCache]: Analyzing trace with hash 370870407, now seen corresponding path program 692 times [2021-05-22 02:03:08,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:08,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380300000] [2021-05-22 02:03:08,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:08,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:08,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:08,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380300000] [2021-05-22 02:03:08,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380300000] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:08,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:08,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:08,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207569330] [2021-05-22 02:03:08,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:08,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:08,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:08,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:08,446 INFO L87 Difference]: Start difference. First operand 5217 states and 24678 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:08,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:08,564 INFO L93 Difference]: Finished difference Result 11579 states and 51820 transitions. [2021-05-22 02:03:08,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:08,564 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:08,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:08,592 INFO L225 Difference]: With dead ends: 11579 [2021-05-22 02:03:08,593 INFO L226 Difference]: Without dead ends: 11056 [2021-05-22 02:03:08,593 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:08,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11056 states. [2021-05-22 02:03:08,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11056 to 5169. [2021-05-22 02:03:08,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.7364551083591335) internal successors, (24478), 5168 states have internal predecessors, (24478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:08,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24478 transitions. [2021-05-22 02:03:08,838 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24478 transitions. Word has length 29 [2021-05-22 02:03:08,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:08,838 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24478 transitions. [2021-05-22 02:03:08,838 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:08,838 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24478 transitions. [2021-05-22 02:03:08,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:08,847 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:08,847 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:08,847 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable696 [2021-05-22 02:03:08,847 INFO L430 AbstractCegarLoop]: === Iteration 698 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:08,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:08,847 INFO L82 PathProgramCache]: Analyzing trace with hash -805394169, now seen corresponding path program 693 times [2021-05-22 02:03:08,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:08,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162462279] [2021-05-22 02:03:08,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:08,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:08,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162462279] [2021-05-22 02:03:08,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162462279] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:08,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:08,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:08,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836725769] [2021-05-22 02:03:08,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:08,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:08,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:08,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:08,975 INFO L87 Difference]: Start difference. First operand 5169 states and 24478 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:09,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:09,068 INFO L93 Difference]: Finished difference Result 11515 states and 51568 transitions. [2021-05-22 02:03:09,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:09,068 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:09,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:09,097 INFO L225 Difference]: With dead ends: 11515 [2021-05-22 02:03:09,097 INFO L226 Difference]: Without dead ends: 11100 [2021-05-22 02:03:09,097 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:09,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11100 states. [2021-05-22 02:03:09,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11100 to 5217. [2021-05-22 02:03:09,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 4.726610429447852) internal successors, (24654), 5216 states have internal predecessors, (24654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 24654 transitions. [2021-05-22 02:03:09,357 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 24654 transitions. Word has length 29 [2021-05-22 02:03:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:09,358 INFO L482 AbstractCegarLoop]: Abstraction has 5217 states and 24654 transitions. [2021-05-22 02:03:09,358 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:09,358 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 24654 transitions. [2021-05-22 02:03:09,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:09,367 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:09,367 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:09,367 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable697 [2021-05-22 02:03:09,367 INFO L430 AbstractCegarLoop]: === Iteration 699 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:09,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:09,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1601421049, now seen corresponding path program 694 times [2021-05-22 02:03:09,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:09,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923120981] [2021-05-22 02:03:09,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:09,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:09,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:09,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923120981] [2021-05-22 02:03:09,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923120981] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:09,493 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:09,493 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:09,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447867919] [2021-05-22 02:03:09,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:09,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:09,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:09,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:09,494 INFO L87 Difference]: Start difference. First operand 5217 states and 24654 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:09,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:09,604 INFO L93 Difference]: Finished difference Result 11571 states and 51772 transitions. [2021-05-22 02:03:09,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:09,604 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:09,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:09,634 INFO L225 Difference]: With dead ends: 11571 [2021-05-22 02:03:09,634 INFO L226 Difference]: Without dead ends: 11052 [2021-05-22 02:03:09,634 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:09,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11052 states. [2021-05-22 02:03:09,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11052 to 5169. [2021-05-22 02:03:09,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.731811145510836) internal successors, (24454), 5168 states have internal predecessors, (24454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:09,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24454 transitions. [2021-05-22 02:03:09,893 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24454 transitions. Word has length 29 [2021-05-22 02:03:09,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:09,893 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24454 transitions. [2021-05-22 02:03:09,893 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:09,893 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24454 transitions. [2021-05-22 02:03:09,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:09,902 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:09,902 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:09,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable698 [2021-05-22 02:03:09,902 INFO L430 AbstractCegarLoop]: === Iteration 700 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:09,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:09,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1662142235, now seen corresponding path program 695 times [2021-05-22 02:03:09,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:09,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512169617] [2021-05-22 02:03:09,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:10,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:10,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:10,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512169617] [2021-05-22 02:03:10,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512169617] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:10,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:10,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:10,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341858350] [2021-05-22 02:03:10,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:10,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:10,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:10,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:10,047 INFO L87 Difference]: Start difference. First operand 5169 states and 24454 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:10,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:10,160 INFO L93 Difference]: Finished difference Result 11663 states and 52212 transitions. [2021-05-22 02:03:10,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:10,160 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:10,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:10,189 INFO L225 Difference]: With dead ends: 11663 [2021-05-22 02:03:10,190 INFO L226 Difference]: Without dead ends: 11188 [2021-05-22 02:03:10,190 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:10,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11188 states. [2021-05-22 02:03:10,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11188 to 5245. [2021-05-22 02:03:10,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 5244 states have (on average 4.71815408085431) internal successors, (24742), 5244 states have internal predecessors, (24742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:10,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 24742 transitions. [2021-05-22 02:03:10,434 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 24742 transitions. Word has length 29 [2021-05-22 02:03:10,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:10,434 INFO L482 AbstractCegarLoop]: Abstraction has 5245 states and 24742 transitions. [2021-05-22 02:03:10,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:10,434 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 24742 transitions. [2021-05-22 02:03:10,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:10,443 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:10,443 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:10,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable699 [2021-05-22 02:03:10,443 INFO L430 AbstractCegarLoop]: === Iteration 701 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:10,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:10,443 INFO L82 PathProgramCache]: Analyzing trace with hash -2143044281, now seen corresponding path program 696 times [2021-05-22 02:03:10,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:10,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917595586] [2021-05-22 02:03:10,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:10,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:10,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917595586] [2021-05-22 02:03:10,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917595586] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:10,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:10,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:10,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067012491] [2021-05-22 02:03:10,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:10,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:10,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:10,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:10,560 INFO L87 Difference]: Start difference. First operand 5245 states and 24742 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:10,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:10,688 INFO L93 Difference]: Finished difference Result 11659 states and 52124 transitions. [2021-05-22 02:03:10,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:10,688 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:10,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:10,719 INFO L225 Difference]: With dead ends: 11659 [2021-05-22 02:03:10,720 INFO L226 Difference]: Without dead ends: 11068 [2021-05-22 02:03:10,720 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:10,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11068 states. [2021-05-22 02:03:10,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11068 to 5125. [2021-05-22 02:03:10,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5124 states have (on average 4.745511319281811) internal successors, (24316), 5124 states have internal predecessors, (24316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:10,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 24316 transitions. [2021-05-22 02:03:10,972 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 24316 transitions. Word has length 29 [2021-05-22 02:03:10,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:10,972 INFO L482 AbstractCegarLoop]: Abstraction has 5125 states and 24316 transitions. [2021-05-22 02:03:10,972 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:10,972 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 24316 transitions. [2021-05-22 02:03:10,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:10,982 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:10,982 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:10,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable700 [2021-05-22 02:03:10,982 INFO L430 AbstractCegarLoop]: === Iteration 702 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:10,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:10,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1609595765, now seen corresponding path program 697 times [2021-05-22 02:03:10,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:10,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874048732] [2021-05-22 02:03:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:11,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:11,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874048732] [2021-05-22 02:03:11,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874048732] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:11,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:11,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:11,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292367330] [2021-05-22 02:03:11,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:11,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:11,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:11,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:11,105 INFO L87 Difference]: Start difference. First operand 5125 states and 24316 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:11,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:11,230 INFO L93 Difference]: Finished difference Result 11374 states and 50978 transitions. [2021-05-22 02:03:11,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:11,231 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:11,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:11,260 INFO L225 Difference]: With dead ends: 11374 [2021-05-22 02:03:11,260 INFO L226 Difference]: Without dead ends: 10897 [2021-05-22 02:03:11,260 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:11,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10897 states. [2021-05-22 02:03:11,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10897 to 5209. [2021-05-22 02:03:11,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.73963133640553) internal successors, (24684), 5208 states have internal predecessors, (24684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:11,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24684 transitions. [2021-05-22 02:03:11,509 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24684 transitions. Word has length 29 [2021-05-22 02:03:11,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:11,509 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24684 transitions. [2021-05-22 02:03:11,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:11,509 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24684 transitions. [2021-05-22 02:03:11,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:11,518 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:11,518 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:11,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable701 [2021-05-22 02:03:11,518 INFO L430 AbstractCegarLoop]: === Iteration 703 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:11,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:11,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1838574569, now seen corresponding path program 698 times [2021-05-22 02:03:11,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:11,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830420630] [2021-05-22 02:03:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:11,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:11,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:11,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830420630] [2021-05-22 02:03:11,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830420630] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:11,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:11,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:11,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673141916] [2021-05-22 02:03:11,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:11,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:11,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:11,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:11,641 INFO L87 Difference]: Start difference. First operand 5209 states and 24684 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:11,737 INFO L93 Difference]: Finished difference Result 11312 states and 50661 transitions. [2021-05-22 02:03:11,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:11,738 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:11,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:11,766 INFO L225 Difference]: With dead ends: 11312 [2021-05-22 02:03:11,766 INFO L226 Difference]: Without dead ends: 10849 [2021-05-22 02:03:11,766 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:11,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10849 states. [2021-05-22 02:03:11,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10849 to 5161. [2021-05-22 02:03:11,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.744961240310078) internal successors, (24484), 5160 states have internal predecessors, (24484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24484 transitions. [2021-05-22 02:03:12,006 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24484 transitions. Word has length 29 [2021-05-22 02:03:12,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:12,006 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24484 transitions. [2021-05-22 02:03:12,006 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:12,006 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24484 transitions. [2021-05-22 02:03:12,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:12,015 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:12,015 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:12,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable702 [2021-05-22 02:03:12,015 INFO L430 AbstractCegarLoop]: === Iteration 704 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:12,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:12,015 INFO L82 PathProgramCache]: Analyzing trace with hash 662309993, now seen corresponding path program 699 times [2021-05-22 02:03:12,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:12,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865817254] [2021-05-22 02:03:12,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:12,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:12,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:12,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865817254] [2021-05-22 02:03:12,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865817254] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:12,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:12,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:12,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654079102] [2021-05-22 02:03:12,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:12,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:12,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:12,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:12,130 INFO L87 Difference]: Start difference. First operand 5161 states and 24484 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:12,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:12,242 INFO L93 Difference]: Finished difference Result 11464 states and 51365 transitions. [2021-05-22 02:03:12,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:12,243 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:12,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:12,272 INFO L225 Difference]: With dead ends: 11464 [2021-05-22 02:03:12,273 INFO L226 Difference]: Without dead ends: 10987 [2021-05-22 02:03:12,273 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:12,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10987 states. [2021-05-22 02:03:12,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10987 to 5239. [2021-05-22 02:03:12,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5239 states, 5238 states have (on average 4.730240549828179) internal successors, (24777), 5238 states have internal predecessors, (24777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5239 states to 5239 states and 24777 transitions. [2021-05-22 02:03:12,605 INFO L78 Accepts]: Start accepts. Automaton has 5239 states and 24777 transitions. Word has length 29 [2021-05-22 02:03:12,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:12,605 INFO L482 AbstractCegarLoop]: Abstraction has 5239 states and 24777 transitions. [2021-05-22 02:03:12,605 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:12,605 INFO L276 IsEmpty]: Start isEmpty. Operand 5239 states and 24777 transitions. [2021-05-22 02:03:12,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:12,615 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:12,615 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:12,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable703 [2021-05-22 02:03:12,615 INFO L430 AbstractCegarLoop]: === Iteration 705 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:12,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:12,616 INFO L82 PathProgramCache]: Analyzing trace with hash -133716887, now seen corresponding path program 700 times [2021-05-22 02:03:12,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:12,616 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128368868] [2021-05-22 02:03:12,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:12,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:12,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:12,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128368868] [2021-05-22 02:03:12,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128368868] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:12,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:12,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:12,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337940365] [2021-05-22 02:03:12,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:12,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:12,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:12,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:12,728 INFO L87 Difference]: Start difference. First operand 5239 states and 24777 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:12,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:12,846 INFO L93 Difference]: Finished difference Result 11462 states and 51282 transitions. [2021-05-22 02:03:12,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:12,846 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:12,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:12,876 INFO L225 Difference]: With dead ends: 11462 [2021-05-22 02:03:12,876 INFO L226 Difference]: Without dead ends: 10909 [2021-05-22 02:03:12,877 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:13,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10909 states. [2021-05-22 02:03:13,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10909 to 5161. [2021-05-22 02:03:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.74031007751938) internal successors, (24460), 5160 states have internal predecessors, (24460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:13,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24460 transitions. [2021-05-22 02:03:13,126 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24460 transitions. Word has length 29 [2021-05-22 02:03:13,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:13,126 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24460 transitions. [2021-05-22 02:03:13,126 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:13,126 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24460 transitions. [2021-05-22 02:03:13,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:13,135 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:13,135 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:13,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable704 [2021-05-22 02:03:13,135 INFO L430 AbstractCegarLoop]: === Iteration 706 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:13,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:13,135 INFO L82 PathProgramCache]: Analyzing trace with hash -194438073, now seen corresponding path program 701 times [2021-05-22 02:03:13,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:13,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487180375] [2021-05-22 02:03:13,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:13,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:13,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487180375] [2021-05-22 02:03:13,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487180375] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:13,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:13,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:13,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255527554] [2021-05-22 02:03:13,259 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:13,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:13,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:13,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:13,259 INFO L87 Difference]: Start difference. First operand 5161 states and 24460 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:13,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:13,360 INFO L93 Difference]: Finished difference Result 11310 states and 50656 transitions. [2021-05-22 02:03:13,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:13,361 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:13,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:13,392 INFO L225 Difference]: With dead ends: 11310 [2021-05-22 02:03:13,392 INFO L226 Difference]: Without dead ends: 10895 [2021-05-22 02:03:13,392 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:13,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10895 states. [2021-05-22 02:03:13,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10895 to 5209. [2021-05-22 02:03:13,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.7304147465437785) internal successors, (24636), 5208 states have internal predecessors, (24636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:13,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24636 transitions. [2021-05-22 02:03:13,641 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24636 transitions. Word has length 29 [2021-05-22 02:03:13,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:13,641 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24636 transitions. [2021-05-22 02:03:13,641 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:13,641 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24636 transitions. [2021-05-22 02:03:13,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:13,651 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:13,651 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:13,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable705 [2021-05-22 02:03:13,651 INFO L430 AbstractCegarLoop]: === Iteration 707 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:13,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:13,651 INFO L82 PathProgramCache]: Analyzing trace with hash -675340119, now seen corresponding path program 702 times [2021-05-22 02:03:13,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:13,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502357596] [2021-05-22 02:03:13,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:13,773 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:13,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502357596] [2021-05-22 02:03:13,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502357596] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:13,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:13,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:13,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101554260] [2021-05-22 02:03:13,773 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:13,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:13,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:13,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:13,773 INFO L87 Difference]: Start difference. First operand 5209 states and 24636 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:13,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:13,886 INFO L93 Difference]: Finished difference Result 11370 states and 50872 transitions. [2021-05-22 02:03:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:13,886 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:13,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:13,914 INFO L225 Difference]: With dead ends: 11370 [2021-05-22 02:03:13,914 INFO L226 Difference]: Without dead ends: 10823 [2021-05-22 02:03:13,914 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:14,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10823 states. [2021-05-22 02:03:14,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10823 to 5137. [2021-05-22 02:03:14,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.7453271028037385) internal successors, (24372), 5136 states have internal predecessors, (24372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:14,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24372 transitions. [2021-05-22 02:03:14,157 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24372 transitions. Word has length 29 [2021-05-22 02:03:14,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:14,157 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24372 transitions. [2021-05-22 02:03:14,157 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:14,157 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24372 transitions. [2021-05-22 02:03:14,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:14,166 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:14,166 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:14,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable706 [2021-05-22 02:03:14,166 INFO L430 AbstractCegarLoop]: === Iteration 708 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:14,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:14,166 INFO L82 PathProgramCache]: Analyzing trace with hash -151548695, now seen corresponding path program 703 times [2021-05-22 02:03:14,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:14,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455082510] [2021-05-22 02:03:14,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:14,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:14,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455082510] [2021-05-22 02:03:14,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455082510] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:14,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:14,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:14,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471182182] [2021-05-22 02:03:14,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:14,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:14,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:14,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:14,287 INFO L87 Difference]: Start difference. First operand 5137 states and 24372 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:14,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:14,403 INFO L93 Difference]: Finished difference Result 11368 states and 50947 transitions. [2021-05-22 02:03:14,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:14,403 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:14,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:14,432 INFO L225 Difference]: With dead ends: 11368 [2021-05-22 02:03:14,433 INFO L226 Difference]: Without dead ends: 10891 [2021-05-22 02:03:14,433 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:14,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10891 states. [2021-05-22 02:03:14,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10891 to 5209. [2021-05-22 02:03:14,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.7373271889400925) internal successors, (24672), 5208 states have internal predecessors, (24672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:14,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24672 transitions. [2021-05-22 02:03:14,678 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24672 transitions. Word has length 29 [2021-05-22 02:03:14,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:14,678 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24672 transitions. [2021-05-22 02:03:14,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:14,678 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24672 transitions. [2021-05-22 02:03:14,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:14,687 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:14,687 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:14,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable707 [2021-05-22 02:03:14,687 INFO L430 AbstractCegarLoop]: === Iteration 709 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:14,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:14,687 INFO L82 PathProgramCache]: Analyzing trace with hash -998345657, now seen corresponding path program 704 times [2021-05-22 02:03:14,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:14,687 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130807717] [2021-05-22 02:03:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:14,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:14,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:14,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130807717] [2021-05-22 02:03:14,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130807717] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:14,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:14,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:14,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90545065] [2021-05-22 02:03:14,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:14,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:14,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:14,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:14,808 INFO L87 Difference]: Start difference. First operand 5209 states and 24672 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:14,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:14,906 INFO L93 Difference]: Finished difference Result 11306 states and 50630 transitions. [2021-05-22 02:03:14,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:14,906 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:14,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:14,934 INFO L225 Difference]: With dead ends: 11306 [2021-05-22 02:03:14,934 INFO L226 Difference]: Without dead ends: 10843 [2021-05-22 02:03:14,934 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:15,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10843 states. [2021-05-22 02:03:15,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10843 to 5161. [2021-05-22 02:03:15,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.742635658914729) internal successors, (24472), 5160 states have internal predecessors, (24472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:15,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24472 transitions. [2021-05-22 02:03:15,171 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24472 transitions. Word has length 29 [2021-05-22 02:03:15,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:15,172 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24472 transitions. [2021-05-22 02:03:15,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:15,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24472 transitions. [2021-05-22 02:03:15,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:15,180 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:15,180 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:15,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable708 [2021-05-22 02:03:15,180 INFO L430 AbstractCegarLoop]: === Iteration 710 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:15,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:15,181 INFO L82 PathProgramCache]: Analyzing trace with hash -629201687, now seen corresponding path program 705 times [2021-05-22 02:03:15,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:15,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039511942] [2021-05-22 02:03:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:15,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:15,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:15,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039511942] [2021-05-22 02:03:15,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039511942] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:15,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:15,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:15,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047001534] [2021-05-22 02:03:15,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:15,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:15,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:15,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:15,293 INFO L87 Difference]: Start difference. First operand 5161 states and 24472 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:15,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:15,399 INFO L93 Difference]: Finished difference Result 11452 states and 51315 transitions. [2021-05-22 02:03:15,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:15,400 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:15,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:15,429 INFO L225 Difference]: With dead ends: 11452 [2021-05-22 02:03:15,429 INFO L226 Difference]: Without dead ends: 10975 [2021-05-22 02:03:15,429 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:15,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10975 states. [2021-05-22 02:03:15,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10975 to 5237. [2021-05-22 02:03:15,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5236 states have (on average 4.728800611153552) internal successors, (24760), 5236 states have internal predecessors, (24760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:15,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 24760 transitions. [2021-05-22 02:03:15,679 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 24760 transitions. Word has length 29 [2021-05-22 02:03:15,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:15,680 INFO L482 AbstractCegarLoop]: Abstraction has 5237 states and 24760 transitions. [2021-05-22 02:03:15,680 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:15,680 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 24760 transitions. [2021-05-22 02:03:15,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:15,689 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:15,689 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:15,689 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable709 [2021-05-22 02:03:15,689 INFO L430 AbstractCegarLoop]: === Iteration 711 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:15,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:15,689 INFO L82 PathProgramCache]: Analyzing trace with hash 907398377, now seen corresponding path program 706 times [2021-05-22 02:03:15,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:15,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733576157] [2021-05-22 02:03:15,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:15,800 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:15,800 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733576157] [2021-05-22 02:03:15,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733576157] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:15,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:15,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:15,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708018135] [2021-05-22 02:03:15,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:15,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:15,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:15,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:15,801 INFO L87 Difference]: Start difference. First operand 5237 states and 24760 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:15,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:15,916 INFO L93 Difference]: Finished difference Result 11446 states and 51222 transitions. [2021-05-22 02:03:15,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:15,916 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:15,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:15,944 INFO L225 Difference]: With dead ends: 11446 [2021-05-22 02:03:15,944 INFO L226 Difference]: Without dead ends: 10899 [2021-05-22 02:03:15,944 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:16,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10899 states. [2021-05-22 02:03:16,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10899 to 5161. [2021-05-22 02:03:16,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.737984496124031) internal successors, (24448), 5160 states have internal predecessors, (24448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:16,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24448 transitions. [2021-05-22 02:03:16,185 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24448 transitions. Word has length 29 [2021-05-22 02:03:16,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:16,185 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24448 transitions. [2021-05-22 02:03:16,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:16,185 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24448 transitions. [2021-05-22 02:03:16,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:16,194 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:16,194 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:16,194 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable710 [2021-05-22 02:03:16,194 INFO L430 AbstractCegarLoop]: === Iteration 712 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:16,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:16,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1485949753, now seen corresponding path program 707 times [2021-05-22 02:03:16,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:16,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218891608] [2021-05-22 02:03:16,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:16,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:16,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:16,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218891608] [2021-05-22 02:03:16,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218891608] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:16,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:16,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:16,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874624438] [2021-05-22 02:03:16,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:16,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:16,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:16,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:16,319 INFO L87 Difference]: Start difference. First operand 5161 states and 24448 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:16,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:16,416 INFO L93 Difference]: Finished difference Result 11300 states and 50613 transitions. [2021-05-22 02:03:16,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:16,416 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:16,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:16,445 INFO L225 Difference]: With dead ends: 11300 [2021-05-22 02:03:16,445 INFO L226 Difference]: Without dead ends: 10885 [2021-05-22 02:03:16,445 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:16,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10885 states. [2021-05-22 02:03:16,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10885 to 5209. [2021-05-22 02:03:16,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.728110599078341) internal successors, (24624), 5208 states have internal predecessors, (24624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:16,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24624 transitions. [2021-05-22 02:03:16,687 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24624 transitions. Word has length 29 [2021-05-22 02:03:16,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:16,687 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24624 transitions. [2021-05-22 02:03:16,687 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:16,687 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24624 transitions. [2021-05-22 02:03:16,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:16,695 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:16,695 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:16,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable711 [2021-05-22 02:03:16,696 INFO L430 AbstractCegarLoop]: === Iteration 713 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:16,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:16,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1635057833, now seen corresponding path program 708 times [2021-05-22 02:03:16,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:16,696 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27893713] [2021-05-22 02:03:16,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:16,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:16,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:16,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27893713] [2021-05-22 02:03:16,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27893713] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:16,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:16,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:16,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516285741] [2021-05-22 02:03:16,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:16,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:16,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:16,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:16,818 INFO L87 Difference]: Start difference. First operand 5209 states and 24624 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:16,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:16,935 INFO L93 Difference]: Finished difference Result 11356 states and 50817 transitions. [2021-05-22 02:03:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:16,936 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:16,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:16,963 INFO L225 Difference]: With dead ends: 11356 [2021-05-22 02:03:16,963 INFO L226 Difference]: Without dead ends: 10813 [2021-05-22 02:03:16,963 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10813 states. [2021-05-22 02:03:17,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10813 to 5137. [2021-05-22 02:03:17,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.742990654205608) internal successors, (24360), 5136 states have internal predecessors, (24360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:17,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24360 transitions. [2021-05-22 02:03:17,202 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24360 transitions. Word has length 29 [2021-05-22 02:03:17,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:17,202 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24360 transitions. [2021-05-22 02:03:17,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:17,202 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24360 transitions. [2021-05-22 02:03:17,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:17,211 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:17,211 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:17,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable712 [2021-05-22 02:03:17,211 INFO L430 AbstractCegarLoop]: === Iteration 714 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:17,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:17,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1147280711, now seen corresponding path program 709 times [2021-05-22 02:03:17,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:17,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708475912] [2021-05-22 02:03:17,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:17,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:17,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:17,326 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708475912] [2021-05-22 02:03:17,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708475912] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:17,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:17,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:17,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154239738] [2021-05-22 02:03:17,327 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:17,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:17,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:17,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:17,327 INFO L87 Difference]: Start difference. First operand 5137 states and 24360 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:17,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:17,443 INFO L93 Difference]: Finished difference Result 11590 states and 51974 transitions. [2021-05-22 02:03:17,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:17,443 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:17,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:17,473 INFO L225 Difference]: With dead ends: 11590 [2021-05-22 02:03:17,473 INFO L226 Difference]: Without dead ends: 11113 [2021-05-22 02:03:17,473 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:17,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11113 states. [2021-05-22 02:03:17,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11113 to 5253. [2021-05-22 02:03:17,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5253 states, 5252 states have (on average 4.732292460015232) internal successors, (24854), 5252 states have internal predecessors, (24854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:17,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5253 states to 5253 states and 24854 transitions. [2021-05-22 02:03:17,720 INFO L78 Accepts]: Start accepts. Automaton has 5253 states and 24854 transitions. Word has length 29 [2021-05-22 02:03:17,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:17,720 INFO L482 AbstractCegarLoop]: Abstraction has 5253 states and 24854 transitions. [2021-05-22 02:03:17,720 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:17,720 INFO L276 IsEmpty]: Start isEmpty. Operand 5253 states and 24854 transitions. [2021-05-22 02:03:17,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:17,728 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:17,729 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:17,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable713 [2021-05-22 02:03:17,729 INFO L430 AbstractCegarLoop]: === Iteration 715 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:17,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:17,729 INFO L82 PathProgramCache]: Analyzing trace with hash 351253831, now seen corresponding path program 710 times [2021-05-22 02:03:17,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:17,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815868240] [2021-05-22 02:03:17,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:17,834 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:17,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815868240] [2021-05-22 02:03:17,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815868240] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:17,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:17,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:17,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136096554] [2021-05-22 02:03:17,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:17,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:17,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:17,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:17,835 INFO L87 Difference]: Start difference. First operand 5253 states and 24854 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:17,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:17,951 INFO L93 Difference]: Finished difference Result 11588 states and 51891 transitions. [2021-05-22 02:03:17,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:17,952 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:17,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:17,980 INFO L225 Difference]: With dead ends: 11588 [2021-05-22 02:03:17,980 INFO L226 Difference]: Without dead ends: 11035 [2021-05-22 02:03:17,980 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:18,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11035 states. [2021-05-22 02:03:18,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11035 to 5175. [2021-05-22 02:03:18,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 5174 states have (on average 4.739659837649787) internal successors, (24523), 5174 states have internal predecessors, (24523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:18,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 24523 transitions. [2021-05-22 02:03:18,220 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 24523 transitions. Word has length 29 [2021-05-22 02:03:18,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:18,220 INFO L482 AbstractCegarLoop]: Abstraction has 5175 states and 24523 transitions. [2021-05-22 02:03:18,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:18,220 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 24523 transitions. [2021-05-22 02:03:18,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:18,229 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:18,229 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:18,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable714 [2021-05-22 02:03:18,229 INFO L430 AbstractCegarLoop]: === Iteration 716 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:18,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:18,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1438084823, now seen corresponding path program 711 times [2021-05-22 02:03:18,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:18,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573567457] [2021-05-22 02:03:18,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:18,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:18,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:18,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573567457] [2021-05-22 02:03:18,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573567457] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:18,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:18,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:18,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227829902] [2021-05-22 02:03:18,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:18,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:18,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:18,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:18,335 INFO L87 Difference]: Start difference. First operand 5175 states and 24523 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:18,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:18,464 INFO L93 Difference]: Finished difference Result 11584 states and 51917 transitions. [2021-05-22 02:03:18,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:18,464 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:18,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:18,497 INFO L225 Difference]: With dead ends: 11584 [2021-05-22 02:03:18,497 INFO L226 Difference]: Without dead ends: 11107 [2021-05-22 02:03:18,497 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:18,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11107 states. [2021-05-22 02:03:18,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11107 to 5251. [2021-05-22 02:03:18,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 4.725904761904762) internal successors, (24811), 5250 states have internal predecessors, (24811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:18,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 24811 transitions. [2021-05-22 02:03:18,798 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 24811 transitions. Word has length 29 [2021-05-22 02:03:18,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:18,799 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 24811 transitions. [2021-05-22 02:03:18,799 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:18,799 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 24811 transitions. [2021-05-22 02:03:18,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:18,808 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:18,808 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:18,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable715 [2021-05-22 02:03:18,808 INFO L430 AbstractCegarLoop]: === Iteration 717 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:18,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:18,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1929521849, now seen corresponding path program 712 times [2021-05-22 02:03:18,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:18,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38405540] [2021-05-22 02:03:18,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:18,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:18,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38405540] [2021-05-22 02:03:18,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38405540] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:18,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:18,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:18,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903506979] [2021-05-22 02:03:18,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:18,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:18,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:18,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:18,919 INFO L87 Difference]: Start difference. First operand 5251 states and 24811 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:19,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:19,058 INFO L93 Difference]: Finished difference Result 11578 states and 51824 transitions. [2021-05-22 02:03:19,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:19,058 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:19,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:19,087 INFO L225 Difference]: With dead ends: 11578 [2021-05-22 02:03:19,087 INFO L226 Difference]: Without dead ends: 11031 [2021-05-22 02:03:19,087 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:19,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11031 states. [2021-05-22 02:03:19,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11031 to 5175. [2021-05-22 02:03:19,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 5174 states have (on average 4.732315423270197) internal successors, (24485), 5174 states have internal predecessors, (24485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:19,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 24485 transitions. [2021-05-22 02:03:19,322 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 24485 transitions. Word has length 29 [2021-05-22 02:03:19,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:19,323 INFO L482 AbstractCegarLoop]: Abstraction has 5175 states and 24485 transitions. [2021-05-22 02:03:19,323 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:19,323 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 24485 transitions. [2021-05-22 02:03:19,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:19,331 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:19,331 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:19,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable716 [2021-05-22 02:03:19,331 INFO L430 AbstractCegarLoop]: === Iteration 718 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:19,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:19,331 INFO L82 PathProgramCache]: Analyzing trace with hash -444834489, now seen corresponding path program 713 times [2021-05-22 02:03:19,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:19,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696864142] [2021-05-22 02:03:19,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:19,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:19,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696864142] [2021-05-22 02:03:19,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696864142] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:19,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:19,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:19,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232656178] [2021-05-22 02:03:19,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:19,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:19,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:19,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:19,437 INFO L87 Difference]: Start difference. First operand 5175 states and 24485 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:19,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:19,563 INFO L93 Difference]: Finished difference Result 11580 states and 51869 transitions. [2021-05-22 02:03:19,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:19,563 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:19,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:19,592 INFO L225 Difference]: With dead ends: 11580 [2021-05-22 02:03:19,592 INFO L226 Difference]: Without dead ends: 11105 [2021-05-22 02:03:19,592 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:19,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11105 states. [2021-05-22 02:03:19,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11105 to 5251. [2021-05-22 02:03:19,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 4.718666666666667) internal successors, (24773), 5250 states have internal predecessors, (24773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:19,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 24773 transitions. [2021-05-22 02:03:19,835 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 24773 transitions. Word has length 29 [2021-05-22 02:03:19,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:19,835 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 24773 transitions. [2021-05-22 02:03:19,835 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:19,835 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 24773 transitions. [2021-05-22 02:03:19,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:19,844 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:19,844 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:19,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable717 [2021-05-22 02:03:19,844 INFO L430 AbstractCegarLoop]: === Iteration 719 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:19,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:19,844 INFO L82 PathProgramCache]: Analyzing trace with hash -925736535, now seen corresponding path program 714 times [2021-05-22 02:03:19,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:19,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438568602] [2021-05-22 02:03:19,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:19,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:19,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438568602] [2021-05-22 02:03:19,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438568602] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:19,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:19,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:19,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245101984] [2021-05-22 02:03:19,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:19,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:19,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:19,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:19,951 INFO L87 Difference]: Start difference. First operand 5251 states and 24773 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:20,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:20,083 INFO L93 Difference]: Finished difference Result 11576 states and 51781 transitions. [2021-05-22 02:03:20,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:20,083 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:20,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:20,111 INFO L225 Difference]: With dead ends: 11576 [2021-05-22 02:03:20,112 INFO L226 Difference]: Without dead ends: 10991 [2021-05-22 02:03:20,112 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:20,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10991 states. [2021-05-22 02:03:20,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10991 to 5137. [2021-05-22 02:03:20,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.740654205607477) internal successors, (24348), 5136 states have internal predecessors, (24348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:20,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24348 transitions. [2021-05-22 02:03:20,356 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24348 transitions. Word has length 29 [2021-05-22 02:03:20,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:20,356 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24348 transitions. [2021-05-22 02:03:20,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:20,356 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24348 transitions. [2021-05-22 02:03:20,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:20,365 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:20,365 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:20,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable718 [2021-05-22 02:03:20,365 INFO L430 AbstractCegarLoop]: === Iteration 720 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:20,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:20,365 INFO L82 PathProgramCache]: Analyzing trace with hash -682543707, now seen corresponding path program 715 times [2021-05-22 02:03:20,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:20,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120886280] [2021-05-22 02:03:20,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:20,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:20,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:20,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120886280] [2021-05-22 02:03:20,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120886280] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:20,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:20,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:20,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730426937] [2021-05-22 02:03:20,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:20,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:20,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:20,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:20,504 INFO L87 Difference]: Start difference. First operand 5137 states and 24348 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:20,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:20,613 INFO L93 Difference]: Finished difference Result 11302 states and 50644 transitions. [2021-05-22 02:03:20,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:20,613 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:20,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:20,643 INFO L225 Difference]: With dead ends: 11302 [2021-05-22 02:03:20,643 INFO L226 Difference]: Without dead ends: 10887 [2021-05-22 02:03:20,643 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:20,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10887 states. [2021-05-22 02:03:20,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10887 to 5209. [2021-05-22 02:03:20,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.732718894009216) internal successors, (24648), 5208 states have internal predecessors, (24648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24648 transitions. [2021-05-22 02:03:20,887 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24648 transitions. Word has length 29 [2021-05-22 02:03:20,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:20,887 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24648 transitions. [2021-05-22 02:03:20,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:20,888 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24648 transitions. [2021-05-22 02:03:20,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:20,896 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:20,896 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:20,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable719 [2021-05-22 02:03:20,896 INFO L430 AbstractCegarLoop]: === Iteration 721 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:20,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:20,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1163445753, now seen corresponding path program 716 times [2021-05-22 02:03:20,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:20,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21209840] [2021-05-22 02:03:20,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:21,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:21,022 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21209840] [2021-05-22 02:03:21,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21209840] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:21,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:21,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:21,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914127050] [2021-05-22 02:03:21,022 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:21,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:21,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:21,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:21,023 INFO L87 Difference]: Start difference. First operand 5209 states and 24648 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:21,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:21,137 INFO L93 Difference]: Finished difference Result 11362 states and 50860 transitions. [2021-05-22 02:03:21,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:21,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:21,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:21,166 INFO L225 Difference]: With dead ends: 11362 [2021-05-22 02:03:21,166 INFO L226 Difference]: Without dead ends: 10839 [2021-05-22 02:03:21,166 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 151.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:21,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10839 states. [2021-05-22 02:03:21,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10839 to 5161. [2021-05-22 02:03:21,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.737984496124031) internal successors, (24448), 5160 states have internal predecessors, (24448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24448 transitions. [2021-05-22 02:03:21,418 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24448 transitions. Word has length 29 [2021-05-22 02:03:21,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:21,418 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24448 transitions. [2021-05-22 02:03:21,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:21,418 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24448 transitions. [2021-05-22 02:03:21,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:21,426 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:21,426 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:21,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable720 [2021-05-22 02:03:21,427 INFO L430 AbstractCegarLoop]: === Iteration 722 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:21,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:21,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1027058055, now seen corresponding path program 717 times [2021-05-22 02:03:21,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:21,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859923329] [2021-05-22 02:03:21,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:21,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:21,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859923329] [2021-05-22 02:03:21,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859923329] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:21,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:21,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:21,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397971489] [2021-05-22 02:03:21,556 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:21,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:21,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:21,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:21,556 INFO L87 Difference]: Start difference. First operand 5161 states and 24448 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:21,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:21,656 INFO L93 Difference]: Finished difference Result 11298 states and 50608 transitions. [2021-05-22 02:03:21,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:21,656 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:21,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:21,686 INFO L225 Difference]: With dead ends: 11298 [2021-05-22 02:03:21,686 INFO L226 Difference]: Without dead ends: 10883 [2021-05-22 02:03:21,686 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:21,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10883 states. [2021-05-22 02:03:21,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10883 to 5209. [2021-05-22 02:03:21,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.728110599078341) internal successors, (24624), 5208 states have internal predecessors, (24624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:21,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24624 transitions. [2021-05-22 02:03:21,948 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24624 transitions. Word has length 29 [2021-05-22 02:03:21,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:21,948 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24624 transitions. [2021-05-22 02:03:21,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:21,948 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24624 transitions. [2021-05-22 02:03:21,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:21,957 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:21,957 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:21,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable721 [2021-05-22 02:03:21,957 INFO L430 AbstractCegarLoop]: === Iteration 723 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:21,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:21,957 INFO L82 PathProgramCache]: Analyzing trace with hash 2120028551, now seen corresponding path program 718 times [2021-05-22 02:03:21,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:21,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412720535] [2021-05-22 02:03:21,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:22,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:22,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:22,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412720535] [2021-05-22 02:03:22,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412720535] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:22,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:22,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:22,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414677709] [2021-05-22 02:03:22,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:22,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:22,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:22,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:22,083 INFO L87 Difference]: Start difference. First operand 5209 states and 24624 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:22,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:22,201 INFO L93 Difference]: Finished difference Result 11354 states and 50812 transitions. [2021-05-22 02:03:22,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:22,201 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:22,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:22,229 INFO L225 Difference]: With dead ends: 11354 [2021-05-22 02:03:22,229 INFO L226 Difference]: Without dead ends: 10835 [2021-05-22 02:03:22,229 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:22,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10835 states. [2021-05-22 02:03:22,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10835 to 5161. [2021-05-22 02:03:22,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.733333333333333) internal successors, (24424), 5160 states have internal predecessors, (24424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:22,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24424 transitions. [2021-05-22 02:03:22,476 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24424 transitions. Word has length 29 [2021-05-22 02:03:22,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:22,476 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24424 transitions. [2021-05-22 02:03:22,476 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:22,476 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24424 transitions. [2021-05-22 02:03:22,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:22,484 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:22,484 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:22,485 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable722 [2021-05-22 02:03:22,485 INFO L430 AbstractCegarLoop]: === Iteration 724 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:22,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:22,485 INFO L82 PathProgramCache]: Analyzing trace with hash 237671785, now seen corresponding path program 719 times [2021-05-22 02:03:22,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:22,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553620398] [2021-05-22 02:03:22,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:22,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:22,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:22,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553620398] [2021-05-22 02:03:22,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553620398] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:22,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:22,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:22,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869883719] [2021-05-22 02:03:22,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:22,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:22,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:22,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:22,600 INFO L87 Difference]: Start difference. First operand 5161 states and 24424 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:22,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:22,708 INFO L93 Difference]: Finished difference Result 11446 states and 51252 transitions. [2021-05-22 02:03:22,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:22,708 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:22,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:22,737 INFO L225 Difference]: With dead ends: 11446 [2021-05-22 02:03:22,737 INFO L226 Difference]: Without dead ends: 10971 [2021-05-22 02:03:22,737 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:22,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10971 states. [2021-05-22 02:03:22,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10971 to 5237. [2021-05-22 02:03:22,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5236 states have (on average 4.719633307868602) internal successors, (24712), 5236 states have internal predecessors, (24712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 24712 transitions. [2021-05-22 02:03:23,059 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 24712 transitions. Word has length 29 [2021-05-22 02:03:23,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:23,059 INFO L482 AbstractCegarLoop]: Abstraction has 5237 states and 24712 transitions. [2021-05-22 02:03:23,059 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:23,059 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 24712 transitions. [2021-05-22 02:03:23,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:23,068 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:23,068 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:23,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable723 [2021-05-22 02:03:23,068 INFO L430 AbstractCegarLoop]: === Iteration 725 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:23,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:23,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1785389753, now seen corresponding path program 720 times [2021-05-22 02:03:23,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:23,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790743604] [2021-05-22 02:03:23,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:23,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:23,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790743604] [2021-05-22 02:03:23,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790743604] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:23,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:23,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:23,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33504886] [2021-05-22 02:03:23,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:23,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:23,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:23,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:23,182 INFO L87 Difference]: Start difference. First operand 5237 states and 24712 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:23,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:23,304 INFO L93 Difference]: Finished difference Result 11442 states and 51164 transitions. [2021-05-22 02:03:23,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:23,305 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:23,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:23,334 INFO L225 Difference]: With dead ends: 11442 [2021-05-22 02:03:23,334 INFO L226 Difference]: Without dead ends: 10827 [2021-05-22 02:03:23,334 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:23,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10827 states. [2021-05-22 02:03:23,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10827 to 5093. [2021-05-22 02:03:23,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 5092 states have (on average 4.760997643362137) internal successors, (24243), 5092 states have internal predecessors, (24243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:23,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 24243 transitions. [2021-05-22 02:03:23,582 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 24243 transitions. Word has length 29 [2021-05-22 02:03:23,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:23,582 INFO L482 AbstractCegarLoop]: Abstraction has 5093 states and 24243 transitions. [2021-05-22 02:03:23,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:23,582 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 24243 transitions. [2021-05-22 02:03:23,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:23,592 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:23,592 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:23,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable724 [2021-05-22 02:03:23,592 INFO L430 AbstractCegarLoop]: === Iteration 726 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:23,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:23,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1427384489, now seen corresponding path program 721 times [2021-05-22 02:03:23,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:23,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981249315] [2021-05-22 02:03:23,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:23,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:23,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:23,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981249315] [2021-05-22 02:03:23,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981249315] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:23,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:23,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:23,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558604969] [2021-05-22 02:03:23,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:23,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:23,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:23,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:23,728 INFO L87 Difference]: Start difference. First operand 5093 states and 24243 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:23,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:23,840 INFO L93 Difference]: Finished difference Result 11649 states and 51963 transitions. [2021-05-22 02:03:23,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:23,841 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:23,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:23,870 INFO L225 Difference]: With dead ends: 11649 [2021-05-22 02:03:23,870 INFO L226 Difference]: Without dead ends: 11234 [2021-05-22 02:03:23,870 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:24,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11234 states. [2021-05-22 02:03:24,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11234 to 5265. [2021-05-22 02:03:24,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 5264 states have (on average 4.750569908814589) internal successors, (25007), 5264 states have internal predecessors, (25007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:24,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 25007 transitions. [2021-05-22 02:03:24,133 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 25007 transitions. Word has length 29 [2021-05-22 02:03:24,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:24,134 INFO L482 AbstractCegarLoop]: Abstraction has 5265 states and 25007 transitions. [2021-05-22 02:03:24,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:24,134 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 25007 transitions. [2021-05-22 02:03:24,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:24,142 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:24,142 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:24,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable725 [2021-05-22 02:03:24,142 INFO L430 AbstractCegarLoop]: === Iteration 727 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:24,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:24,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1112762199, now seen corresponding path program 722 times [2021-05-22 02:03:24,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:24,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682575486] [2021-05-22 02:03:24,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:24,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:24,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:24,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682575486] [2021-05-22 02:03:24,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682575486] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:24,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:24,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:24,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207976822] [2021-05-22 02:03:24,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:24,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:24,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:24,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:24,279 INFO L87 Difference]: Start difference. First operand 5265 states and 25007 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:24,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:24,376 INFO L93 Difference]: Finished difference Result 11776 states and 52442 transitions. [2021-05-22 02:03:24,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:24,376 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:24,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:24,405 INFO L225 Difference]: With dead ends: 11776 [2021-05-22 02:03:24,406 INFO L226 Difference]: Without dead ends: 11154 [2021-05-22 02:03:24,406 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:24,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11154 states. [2021-05-22 02:03:24,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11154 to 5185. [2021-05-22 02:03:24,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.754436728395062) internal successors, (24647), 5184 states have internal predecessors, (24647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:24,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24647 transitions. [2021-05-22 02:03:24,667 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24647 transitions. Word has length 29 [2021-05-22 02:03:24,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:24,668 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24647 transitions. [2021-05-22 02:03:24,668 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:24,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24647 transitions. [2021-05-22 02:03:24,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:24,677 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:24,677 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:24,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable726 [2021-05-22 02:03:24,677 INFO L430 AbstractCegarLoop]: === Iteration 728 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:24,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:24,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1207582633, now seen corresponding path program 723 times [2021-05-22 02:03:24,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:24,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368990102] [2021-05-22 02:03:24,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:24,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:24,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368990102] [2021-05-22 02:03:24,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368990102] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:24,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:24,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:24,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778255867] [2021-05-22 02:03:24,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:24,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:24,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:24,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:24,803 INFO L87 Difference]: Start difference. First operand 5185 states and 24647 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:24,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:24,916 INFO L93 Difference]: Finished difference Result 11552 states and 51521 transitions. [2021-05-22 02:03:24,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:24,916 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:24,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:24,946 INFO L225 Difference]: With dead ends: 11552 [2021-05-22 02:03:24,946 INFO L226 Difference]: Without dead ends: 11137 [2021-05-22 02:03:24,946 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:25,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11137 states. [2021-05-22 02:03:25,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11137 to 5233. [2021-05-22 02:03:25,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 4.744457186544342) internal successors, (24823), 5232 states have internal predecessors, (24823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:25,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 24823 transitions. [2021-05-22 02:03:25,198 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 24823 transitions. Word has length 29 [2021-05-22 02:03:25,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:25,198 INFO L482 AbstractCegarLoop]: Abstraction has 5233 states and 24823 transitions. [2021-05-22 02:03:25,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:25,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 24823 transitions. [2021-05-22 02:03:25,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:25,207 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:25,207 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:25,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable727 [2021-05-22 02:03:25,207 INFO L430 AbstractCegarLoop]: === Iteration 729 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:25,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:25,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1924245579, now seen corresponding path program 724 times [2021-05-22 02:03:25,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:25,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218266597] [2021-05-22 02:03:25,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:25,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:25,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:25,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218266597] [2021-05-22 02:03:25,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218266597] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:25,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:25,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:25,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269686297] [2021-05-22 02:03:25,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:25,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:25,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:25,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:25,333 INFO L87 Difference]: Start difference. First operand 5233 states and 24823 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:25,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:25,450 INFO L93 Difference]: Finished difference Result 11614 states and 51742 transitions. [2021-05-22 02:03:25,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:25,450 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:25,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:25,479 INFO L225 Difference]: With dead ends: 11614 [2021-05-22 02:03:25,479 INFO L226 Difference]: Without dead ends: 11089 [2021-05-22 02:03:25,479 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:25,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11089 states. [2021-05-22 02:03:25,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11089 to 5185. [2021-05-22 02:03:25,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.749807098765432) internal successors, (24623), 5184 states have internal predecessors, (24623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:25,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24623 transitions. [2021-05-22 02:03:25,725 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24623 transitions. Word has length 29 [2021-05-22 02:03:25,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:25,726 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24623 transitions. [2021-05-22 02:03:25,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:25,726 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24623 transitions. [2021-05-22 02:03:25,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:25,734 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:25,735 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:25,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable728 [2021-05-22 02:03:25,735 INFO L430 AbstractCegarLoop]: === Iteration 730 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:25,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:25,735 INFO L82 PathProgramCache]: Analyzing trace with hash -287496117, now seen corresponding path program 725 times [2021-05-22 02:03:25,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:25,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154354871] [2021-05-22 02:03:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:25,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:25,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:25,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154354871] [2021-05-22 02:03:25,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154354871] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:25,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:25,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:25,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679336409] [2021-05-22 02:03:25,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:25,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:25,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:25,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:25,851 INFO L87 Difference]: Start difference. First operand 5185 states and 24623 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:25,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:25,952 INFO L93 Difference]: Finished difference Result 11901 states and 52957 transitions. [2021-05-22 02:03:25,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:25,952 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:25,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:25,981 INFO L225 Difference]: With dead ends: 11901 [2021-05-22 02:03:25,981 INFO L226 Difference]: Without dead ends: 11359 [2021-05-22 02:03:25,982 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:26,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11359 states. [2021-05-22 02:03:26,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11359 to 5328. [2021-05-22 02:03:26,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5328 states, 5327 states have (on average 4.719729678993805) internal successors, (25142), 5327 states have internal predecessors, (25142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:26,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 25142 transitions. [2021-05-22 02:03:26,235 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 25142 transitions. Word has length 29 [2021-05-22 02:03:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:26,235 INFO L482 AbstractCegarLoop]: Abstraction has 5328 states and 25142 transitions. [2021-05-22 02:03:26,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 25142 transitions. [2021-05-22 02:03:26,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:26,245 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:26,245 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:26,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable729 [2021-05-22 02:03:26,245 INFO L430 AbstractCegarLoop]: === Iteration 731 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:26,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:26,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1964134185, now seen corresponding path program 726 times [2021-05-22 02:03:26,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:26,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878856189] [2021-05-22 02:03:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:26,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:26,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:26,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878856189] [2021-05-22 02:03:26,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878856189] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:26,362 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:26,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:26,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405112682] [2021-05-22 02:03:26,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:26,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:26,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:26,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:26,362 INFO L87 Difference]: Start difference. First operand 5328 states and 25142 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:26,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:26,486 INFO L93 Difference]: Finished difference Result 11836 states and 52588 transitions. [2021-05-22 02:03:26,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:26,486 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:26,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:26,516 INFO L225 Difference]: With dead ends: 11836 [2021-05-22 02:03:26,516 INFO L226 Difference]: Without dead ends: 11160 [2021-05-22 02:03:26,516 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:26,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11160 states. [2021-05-22 02:03:26,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11160 to 5129. [2021-05-22 02:03:26,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.756435257410296) internal successors, (24391), 5128 states have internal predecessors, (24391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:26,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24391 transitions. [2021-05-22 02:03:26,769 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24391 transitions. Word has length 29 [2021-05-22 02:03:26,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:26,769 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24391 transitions. [2021-05-22 02:03:26,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:26,769 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24391 transitions. [2021-05-22 02:03:26,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:26,778 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:26,778 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:26,778 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable730 [2021-05-22 02:03:26,778 INFO L430 AbstractCegarLoop]: === Iteration 732 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:26,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:26,778 INFO L82 PathProgramCache]: Analyzing trace with hash -662708951, now seen corresponding path program 727 times [2021-05-22 02:03:26,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:26,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627238884] [2021-05-22 02:03:26,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:26,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:26,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:26,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627238884] [2021-05-22 02:03:26,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627238884] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:26,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:26,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:26,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157990799] [2021-05-22 02:03:26,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:26,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:26,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:26,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:26,905 INFO L87 Difference]: Start difference. First operand 5129 states and 24391 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:27,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:27,024 INFO L93 Difference]: Finished difference Result 11598 states and 51751 transitions. [2021-05-22 02:03:27,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:27,024 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:27,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:27,055 INFO L225 Difference]: With dead ends: 11598 [2021-05-22 02:03:27,056 INFO L226 Difference]: Without dead ends: 11183 [2021-05-22 02:03:27,056 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:27,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11183 states. [2021-05-22 02:03:27,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11183 to 5249. [2021-05-22 02:03:27,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5249 states, 5248 states have (on average 4.747522865853658) internal successors, (24915), 5248 states have internal predecessors, (24915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:27,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 24915 transitions. [2021-05-22 02:03:27,331 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 24915 transitions. Word has length 29 [2021-05-22 02:03:27,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:27,331 INFO L482 AbstractCegarLoop]: Abstraction has 5249 states and 24915 transitions. [2021-05-22 02:03:27,332 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:27,332 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 24915 transitions. [2021-05-22 02:03:27,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:27,343 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:27,343 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:27,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable731 [2021-05-22 02:03:27,343 INFO L430 AbstractCegarLoop]: === Iteration 733 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:27,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:27,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1092111657, now seen corresponding path program 728 times [2021-05-22 02:03:27,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:27,343 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423865875] [2021-05-22 02:03:27,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:27,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:27,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423865875] [2021-05-22 02:03:27,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423865875] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:27,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:27,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:27,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250134166] [2021-05-22 02:03:27,478 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:27,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:27,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:27,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:27,478 INFO L87 Difference]: Start difference. First operand 5249 states and 24915 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:27,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:27,573 INFO L93 Difference]: Finished difference Result 11725 states and 52230 transitions. [2021-05-22 02:03:27,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:27,574 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:27,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:27,603 INFO L225 Difference]: With dead ends: 11725 [2021-05-22 02:03:27,603 INFO L226 Difference]: Without dead ends: 11103 [2021-05-22 02:03:27,603 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:27,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11103 states. [2021-05-22 02:03:27,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11103 to 5169. [2021-05-22 02:03:27,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.751354489164087) internal successors, (24555), 5168 states have internal predecessors, (24555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:27,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24555 transitions. [2021-05-22 02:03:27,861 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24555 transitions. Word has length 29 [2021-05-22 02:03:27,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:27,861 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24555 transitions. [2021-05-22 02:03:27,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:27,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24555 transitions. [2021-05-22 02:03:27,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:27,873 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:27,873 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:27,873 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable732 [2021-05-22 02:03:27,873 INFO L430 AbstractCegarLoop]: === Iteration 734 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:27,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:27,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1744754887, now seen corresponding path program 729 times [2021-05-22 02:03:27,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:27,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702789201] [2021-05-22 02:03:27,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:28,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:28,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702789201] [2021-05-22 02:03:28,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702789201] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:28,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:28,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:28,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588612579] [2021-05-22 02:03:28,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:28,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:28,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:28,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:28,009 INFO L87 Difference]: Start difference. First operand 5169 states and 24555 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:28,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:28,123 INFO L93 Difference]: Finished difference Result 11499 states and 51304 transitions. [2021-05-22 02:03:28,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:28,123 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:28,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:28,153 INFO L225 Difference]: With dead ends: 11499 [2021-05-22 02:03:28,153 INFO L226 Difference]: Without dead ends: 11084 [2021-05-22 02:03:28,153 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:28,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11084 states. [2021-05-22 02:03:28,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11084 to 5217. [2021-05-22 02:03:28,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 4.741372699386503) internal successors, (24731), 5216 states have internal predecessors, (24731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:28,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 24731 transitions. [2021-05-22 02:03:28,407 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 24731 transitions. Word has length 29 [2021-05-22 02:03:28,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:28,407 INFO L482 AbstractCegarLoop]: Abstraction has 5217 states and 24731 transitions. [2021-05-22 02:03:28,407 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:28,407 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 24731 transitions. [2021-05-22 02:03:28,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:28,416 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:28,417 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:28,417 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable733 [2021-05-22 02:03:28,417 INFO L430 AbstractCegarLoop]: === Iteration 735 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:28,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:28,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1230073961, now seen corresponding path program 730 times [2021-05-22 02:03:28,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:28,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52291684] [2021-05-22 02:03:28,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:28,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:28,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:28,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52291684] [2021-05-22 02:03:28,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52291684] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:28,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:28,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:28,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432270746] [2021-05-22 02:03:28,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:28,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:28,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:28,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:28,547 INFO L87 Difference]: Start difference. First operand 5217 states and 24731 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:28,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:28,655 INFO L93 Difference]: Finished difference Result 11559 states and 51520 transitions. [2021-05-22 02:03:28,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:28,656 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:28,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:28,684 INFO L225 Difference]: With dead ends: 11559 [2021-05-22 02:03:28,684 INFO L226 Difference]: Without dead ends: 11036 [2021-05-22 02:03:28,685 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:28,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11036 states. [2021-05-22 02:03:28,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11036 to 5169. [2021-05-22 02:03:28,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.746710526315789) internal successors, (24531), 5168 states have internal predecessors, (24531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:28,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24531 transitions. [2021-05-22 02:03:28,937 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24531 transitions. Word has length 29 [2021-05-22 02:03:28,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:28,937 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24531 transitions. [2021-05-22 02:03:28,937 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:28,937 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24531 transitions. [2021-05-22 02:03:28,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:28,946 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:28,946 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:28,946 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable734 [2021-05-22 02:03:28,946 INFO L430 AbstractCegarLoop]: === Iteration 736 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:28,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:28,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1968902249, now seen corresponding path program 731 times [2021-05-22 02:03:28,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:28,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560264825] [2021-05-22 02:03:28,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:29,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:29,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:29,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560264825] [2021-05-22 02:03:29,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560264825] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:29,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:29,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:29,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475638727] [2021-05-22 02:03:29,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:29,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:29,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:29,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:29,066 INFO L87 Difference]: Start difference. First operand 5169 states and 24531 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:29,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:29,170 INFO L93 Difference]: Finished difference Result 11815 states and 52625 transitions. [2021-05-22 02:03:29,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:29,170 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:29,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:29,199 INFO L225 Difference]: With dead ends: 11815 [2021-05-22 02:03:29,199 INFO L226 Difference]: Without dead ends: 11273 [2021-05-22 02:03:29,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:29,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11273 states. [2021-05-22 02:03:29,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11273 to 5279. [2021-05-22 02:03:29,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5279 states, 5278 states have (on average 4.724516862447897) internal successors, (24936), 5278 states have internal predecessors, (24936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:29,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5279 states to 5279 states and 24936 transitions. [2021-05-22 02:03:29,448 INFO L78 Accepts]: Start accepts. Automaton has 5279 states and 24936 transitions. Word has length 29 [2021-05-22 02:03:29,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:29,448 INFO L482 AbstractCegarLoop]: Abstraction has 5279 states and 24936 transitions. [2021-05-22 02:03:29,448 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:29,448 INFO L276 IsEmpty]: Start isEmpty. Operand 5279 states and 24936 transitions. [2021-05-22 02:03:29,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:29,457 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:29,457 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:29,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable735 [2021-05-22 02:03:29,457 INFO L430 AbstractCegarLoop]: === Iteration 737 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:29,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:29,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1227950151, now seen corresponding path program 732 times [2021-05-22 02:03:29,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:29,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127940563] [2021-05-22 02:03:29,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:29,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:29,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:29,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:29,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127940563] [2021-05-22 02:03:29,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127940563] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:29,575 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:29,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:29,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573746209] [2021-05-22 02:03:29,575 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:29,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:29,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:29,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:29,576 INFO L87 Difference]: Start difference. First operand 5279 states and 24936 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:29,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:29,697 INFO L93 Difference]: Finished difference Result 11748 states and 52252 transitions. [2021-05-22 02:03:29,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:29,697 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:29,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:29,727 INFO L225 Difference]: With dead ends: 11748 [2021-05-22 02:03:29,727 INFO L226 Difference]: Without dead ends: 11123 [2021-05-22 02:03:29,727 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:29,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11123 states. [2021-05-22 02:03:29,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11123 to 5129. [2021-05-22 02:03:29,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.752535101404056) internal successors, (24371), 5128 states have internal predecessors, (24371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:29,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24371 transitions. [2021-05-22 02:03:29,971 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24371 transitions. Word has length 29 [2021-05-22 02:03:29,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:29,971 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24371 transitions. [2021-05-22 02:03:29,971 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:29,971 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24371 transitions. [2021-05-22 02:03:29,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:29,980 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:29,980 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:29,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable736 [2021-05-22 02:03:29,980 INFO L430 AbstractCegarLoop]: === Iteration 738 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:29,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:29,980 INFO L82 PathProgramCache]: Analyzing trace with hash 598282183, now seen corresponding path program 733 times [2021-05-22 02:03:29,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:29,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650398205] [2021-05-22 02:03:29,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:30,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:30,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650398205] [2021-05-22 02:03:30,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650398205] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:30,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:30,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:30,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063456222] [2021-05-22 02:03:30,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:30,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:30,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:30,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:30,107 INFO L87 Difference]: Start difference. First operand 5129 states and 24371 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:30,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:30,219 INFO L93 Difference]: Finished difference Result 11356 states and 50703 transitions. [2021-05-22 02:03:30,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:30,220 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:30,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:30,247 INFO L225 Difference]: With dead ends: 11356 [2021-05-22 02:03:30,247 INFO L226 Difference]: Without dead ends: 10941 [2021-05-22 02:03:30,248 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:30,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10941 states. [2021-05-22 02:03:30,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10941 to 5201. [2021-05-22 02:03:30,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 4.744423076923077) internal successors, (24671), 5200 states have internal predecessors, (24671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:30,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 24671 transitions. [2021-05-22 02:03:30,485 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 24671 transitions. Word has length 29 [2021-05-22 02:03:30,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:30,485 INFO L482 AbstractCegarLoop]: Abstraction has 5201 states and 24671 transitions. [2021-05-22 02:03:30,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:30,485 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 24671 transitions. [2021-05-22 02:03:30,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:30,494 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:30,494 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:30,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable737 [2021-05-22 02:03:30,494 INFO L430 AbstractCegarLoop]: === Iteration 739 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:30,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:30,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1314945129, now seen corresponding path program 734 times [2021-05-22 02:03:30,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:30,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003732176] [2021-05-22 02:03:30,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:30,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:30,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003732176] [2021-05-22 02:03:30,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003732176] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:30,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:30,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:30,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112696084] [2021-05-22 02:03:30,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:30,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:30,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:30,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:30,623 INFO L87 Difference]: Start difference. First operand 5201 states and 24671 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:30,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:30,732 INFO L93 Difference]: Finished difference Result 11418 states and 50924 transitions. [2021-05-22 02:03:30,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:30,733 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:30,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:30,760 INFO L225 Difference]: With dead ends: 11418 [2021-05-22 02:03:30,761 INFO L226 Difference]: Without dead ends: 10893 [2021-05-22 02:03:30,761 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:30,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10893 states. [2021-05-22 02:03:30,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10893 to 5153. [2021-05-22 02:03:30,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.749805900621118) internal successors, (24471), 5152 states have internal predecessors, (24471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:30,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24471 transitions. [2021-05-22 02:03:30,995 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24471 transitions. Word has length 29 [2021-05-22 02:03:30,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:30,995 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24471 transitions. [2021-05-22 02:03:30,995 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:30,996 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24471 transitions. [2021-05-22 02:03:31,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:31,004 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:31,004 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:31,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable738 [2021-05-22 02:03:31,004 INFO L430 AbstractCegarLoop]: === Iteration 740 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:31,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:31,004 INFO L82 PathProgramCache]: Analyzing trace with hash -575677527, now seen corresponding path program 735 times [2021-05-22 02:03:31,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:31,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558704320] [2021-05-22 02:03:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:31,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:31,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558704320] [2021-05-22 02:03:31,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558704320] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:31,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:31,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:31,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839165063] [2021-05-22 02:03:31,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:31,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:31,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:31,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:31,145 INFO L87 Difference]: Start difference. First operand 5153 states and 24471 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:31,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:31,257 INFO L93 Difference]: Finished difference Result 11354 states and 50674 transitions. [2021-05-22 02:03:31,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:31,258 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:31,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:31,285 INFO L225 Difference]: With dead ends: 11354 [2021-05-22 02:03:31,285 INFO L226 Difference]: Without dead ends: 10939 [2021-05-22 02:03:31,285 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:31,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10939 states. [2021-05-22 02:03:31,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10939 to 5201. [2021-05-22 02:03:31,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 4.739807692307692) internal successors, (24647), 5200 states have internal predecessors, (24647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:31,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 24647 transitions. [2021-05-22 02:03:31,525 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 24647 transitions. Word has length 29 [2021-05-22 02:03:31,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:31,526 INFO L482 AbstractCegarLoop]: Abstraction has 5201 states and 24647 transitions. [2021-05-22 02:03:31,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:31,526 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 24647 transitions. [2021-05-22 02:03:31,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:31,534 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:31,535 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:31,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable739 [2021-05-22 02:03:31,535 INFO L430 AbstractCegarLoop]: === Iteration 741 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:31,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:31,535 INFO L82 PathProgramCache]: Analyzing trace with hash 453887849, now seen corresponding path program 736 times [2021-05-22 02:03:31,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:31,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081323511] [2021-05-22 02:03:31,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:31,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:31,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081323511] [2021-05-22 02:03:31,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081323511] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:31,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:31,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:31,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257220666] [2021-05-22 02:03:31,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:31,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:31,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:31,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:31,675 INFO L87 Difference]: Start difference. First operand 5201 states and 24647 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:31,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:31,796 INFO L93 Difference]: Finished difference Result 11414 states and 50890 transitions. [2021-05-22 02:03:31,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:31,796 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:31,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:31,823 INFO L225 Difference]: With dead ends: 11414 [2021-05-22 02:03:31,824 INFO L226 Difference]: Without dead ends: 10891 [2021-05-22 02:03:31,824 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 160.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:31,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10891 states. [2021-05-22 02:03:32,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10891 to 5153. [2021-05-22 02:03:32,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.74514751552795) internal successors, (24447), 5152 states have internal predecessors, (24447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24447 transitions. [2021-05-22 02:03:32,059 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24447 transitions. Word has length 29 [2021-05-22 02:03:32,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:32,059 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24447 transitions. [2021-05-22 02:03:32,059 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:32,059 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24447 transitions. [2021-05-22 02:03:32,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:32,067 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:32,067 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:32,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable740 [2021-05-22 02:03:32,067 INFO L430 AbstractCegarLoop]: === Iteration 742 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:32,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:32,068 INFO L82 PathProgramCache]: Analyzing trace with hash 627814283, now seen corresponding path program 737 times [2021-05-22 02:03:32,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:32,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788124966] [2021-05-22 02:03:32,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:32,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:32,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:32,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788124966] [2021-05-22 02:03:32,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788124966] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:32,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:32,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:32,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103411991] [2021-05-22 02:03:32,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:32,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:32,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:32,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:32,186 INFO L87 Difference]: Start difference. First operand 5153 states and 24447 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:32,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:32,297 INFO L93 Difference]: Finished difference Result 11508 states and 51335 transitions. [2021-05-22 02:03:32,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:32,297 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:32,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:32,325 INFO L225 Difference]: With dead ends: 11508 [2021-05-22 02:03:32,325 INFO L226 Difference]: Without dead ends: 11031 [2021-05-22 02:03:32,325 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:32,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11031 states. [2021-05-22 02:03:32,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11031 to 5231. [2021-05-22 02:03:32,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5231 states, 5230 states have (on average 4.730401529636711) internal successors, (24740), 5230 states have internal predecessors, (24740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5231 states to 5231 states and 24740 transitions. [2021-05-22 02:03:32,563 INFO L78 Accepts]: Start accepts. Automaton has 5231 states and 24740 transitions. Word has length 29 [2021-05-22 02:03:32,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:32,563 INFO L482 AbstractCegarLoop]: Abstraction has 5231 states and 24740 transitions. [2021-05-22 02:03:32,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:32,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5231 states and 24740 transitions. [2021-05-22 02:03:32,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:32,572 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:32,572 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:32,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable741 [2021-05-22 02:03:32,572 INFO L430 AbstractCegarLoop]: === Iteration 743 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:32,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:32,572 INFO L82 PathProgramCache]: Analyzing trace with hash -764330263, now seen corresponding path program 738 times [2021-05-22 02:03:32,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:32,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718382508] [2021-05-22 02:03:32,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:32,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:32,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718382508] [2021-05-22 02:03:32,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718382508] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:32,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:32,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:32,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505045571] [2021-05-22 02:03:32,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:32,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:32,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:32,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:32,692 INFO L87 Difference]: Start difference. First operand 5231 states and 24740 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:32,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:32,818 INFO L93 Difference]: Finished difference Result 11506 states and 51252 transitions. [2021-05-22 02:03:32,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:32,818 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:32,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:32,845 INFO L225 Difference]: With dead ends: 11506 [2021-05-22 02:03:32,846 INFO L226 Difference]: Without dead ends: 10929 [2021-05-22 02:03:32,846 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:32,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10929 states. [2021-05-22 02:03:33,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10929 to 5129. [2021-05-22 02:03:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.750195007800312) internal successors, (24359), 5128 states have internal predecessors, (24359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:33,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24359 transitions. [2021-05-22 02:03:33,082 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24359 transitions. Word has length 29 [2021-05-22 02:03:33,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:33,082 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24359 transitions. [2021-05-22 02:03:33,082 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:33,082 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24359 transitions. [2021-05-22 02:03:33,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:33,091 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:33,091 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:33,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable742 [2021-05-22 02:03:33,091 INFO L430 AbstractCegarLoop]: === Iteration 744 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:33,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:33,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1299996555, now seen corresponding path program 739 times [2021-05-22 02:03:33,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:33,091 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052545077] [2021-05-22 02:03:33,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:33,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:33,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:33,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052545077] [2021-05-22 02:03:33,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052545077] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:33,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:33,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:33,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725348956] [2021-05-22 02:03:33,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:33,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:33,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:33,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:33,202 INFO L87 Difference]: Start difference. First operand 5129 states and 24359 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:33,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:33,312 INFO L93 Difference]: Finished difference Result 12052 states and 53648 transitions. [2021-05-22 02:03:33,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:33,312 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:33,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:33,341 INFO L225 Difference]: With dead ends: 12052 [2021-05-22 02:03:33,341 INFO L226 Difference]: Without dead ends: 11510 [2021-05-22 02:03:33,341 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:33,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11510 states. [2021-05-22 02:03:33,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11510 to 5359. [2021-05-22 02:03:33,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5359 states, 5358 states have (on average 4.717245240761478) internal successors, (25275), 5358 states have internal predecessors, (25275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:33,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5359 states to 5359 states and 25275 transitions. [2021-05-22 02:03:33,631 INFO L78 Accepts]: Start accepts. Automaton has 5359 states and 25275 transitions. Word has length 29 [2021-05-22 02:03:33,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:33,631 INFO L482 AbstractCegarLoop]: Abstraction has 5359 states and 25275 transitions. [2021-05-22 02:03:33,631 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:33,631 INFO L276 IsEmpty]: Start isEmpty. Operand 5359 states and 25275 transitions. [2021-05-22 02:03:33,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:33,640 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:33,640 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:33,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable743 [2021-05-22 02:03:33,640 INFO L430 AbstractCegarLoop]: === Iteration 745 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:33,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:33,640 INFO L82 PathProgramCache]: Analyzing trace with hash -743340439, now seen corresponding path program 740 times [2021-05-22 02:03:33,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:33,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618209217] [2021-05-22 02:03:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:33,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:33,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:33,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618209217] [2021-05-22 02:03:33,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618209217] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:33,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:33,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:33,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656406811] [2021-05-22 02:03:33,748 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:33,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:33,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:33,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:33,748 INFO L87 Difference]: Start difference. First operand 5359 states and 25275 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:33,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:33,853 INFO L93 Difference]: Finished difference Result 11987 states and 53279 transitions. [2021-05-22 02:03:33,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:33,853 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:33,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:33,882 INFO L225 Difference]: With dead ends: 11987 [2021-05-22 02:03:33,882 INFO L226 Difference]: Without dead ends: 11367 [2021-05-22 02:03:33,882 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:34,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11367 states. [2021-05-22 02:03:34,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11367 to 5216. [2021-05-22 02:03:34,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5216 states, 5215 states have (on average 4.733461169702781) internal successors, (24685), 5215 states have internal predecessors, (24685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:34,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5216 states to 5216 states and 24685 transitions. [2021-05-22 02:03:34,125 INFO L78 Accepts]: Start accepts. Automaton has 5216 states and 24685 transitions. Word has length 29 [2021-05-22 02:03:34,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:34,126 INFO L482 AbstractCegarLoop]: Abstraction has 5216 states and 24685 transitions. [2021-05-22 02:03:34,126 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:34,126 INFO L276 IsEmpty]: Start isEmpty. Operand 5216 states and 24685 transitions. [2021-05-22 02:03:34,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:34,134 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:34,134 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:34,134 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable744 [2021-05-22 02:03:34,134 INFO L430 AbstractCegarLoop]: === Iteration 746 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:34,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:34,134 INFO L82 PathProgramCache]: Analyzing trace with hash -816083095, now seen corresponding path program 741 times [2021-05-22 02:03:34,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:34,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919896313] [2021-05-22 02:03:34,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:34,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:34,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:34,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919896313] [2021-05-22 02:03:34,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919896313] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:34,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:34,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:34,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469192117] [2021-05-22 02:03:34,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:34,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:34,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:34,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:34,260 INFO L87 Difference]: Start difference. First operand 5216 states and 24685 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:34,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:34,358 INFO L93 Difference]: Finished difference Result 12017 states and 53457 transitions. [2021-05-22 02:03:34,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:34,359 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:34,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:34,387 INFO L225 Difference]: With dead ends: 12017 [2021-05-22 02:03:34,387 INFO L226 Difference]: Without dead ends: 11475 [2021-05-22 02:03:34,388 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:34,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11475 states. [2021-05-22 02:03:34,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11475 to 5326. [2021-05-22 02:03:34,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5326 states, 5325 states have (on average 4.711737089201878) internal successors, (25090), 5325 states have internal predecessors, (25090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:34,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5326 states to 5326 states and 25090 transitions. [2021-05-22 02:03:34,635 INFO L78 Accepts]: Start accepts. Automaton has 5326 states and 25090 transitions. Word has length 29 [2021-05-22 02:03:34,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:34,636 INFO L482 AbstractCegarLoop]: Abstraction has 5326 states and 25090 transitions. [2021-05-22 02:03:34,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:34,636 INFO L276 IsEmpty]: Start isEmpty. Operand 5326 states and 25090 transitions. [2021-05-22 02:03:34,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:34,645 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:34,645 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:34,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable745 [2021-05-22 02:03:34,646 INFO L430 AbstractCegarLoop]: === Iteration 747 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:34,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:34,646 INFO L82 PathProgramCache]: Analyzing trace with hash -260294807, now seen corresponding path program 742 times [2021-05-22 02:03:34,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:34,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27588955] [2021-05-22 02:03:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:34,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:34,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:34,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27588955] [2021-05-22 02:03:34,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27588955] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:34,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:34,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:34,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125902760] [2021-05-22 02:03:34,752 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:34,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:34,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:34,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:34,753 INFO L87 Difference]: Start difference. First operand 5326 states and 25090 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:34,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:34,867 INFO L93 Difference]: Finished difference Result 11950 states and 53084 transitions. [2021-05-22 02:03:34,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:34,867 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:34,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:34,896 INFO L225 Difference]: With dead ends: 11950 [2021-05-22 02:03:34,896 INFO L226 Difference]: Without dead ends: 11365 [2021-05-22 02:03:34,896 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:35,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11365 states. [2021-05-22 02:03:35,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11365 to 5216. [2021-05-22 02:03:35,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5216 states, 5215 states have (on average 4.722914669223394) internal successors, (24630), 5215 states have internal predecessors, (24630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:35,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5216 states to 5216 states and 24630 transitions. [2021-05-22 02:03:35,142 INFO L78 Accepts]: Start accepts. Automaton has 5216 states and 24630 transitions. Word has length 29 [2021-05-22 02:03:35,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:35,142 INFO L482 AbstractCegarLoop]: Abstraction has 5216 states and 24630 transitions. [2021-05-22 02:03:35,142 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:35,142 INFO L276 IsEmpty]: Start isEmpty. Operand 5216 states and 24630 transitions. [2021-05-22 02:03:35,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:35,151 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:35,151 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:35,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable746 [2021-05-22 02:03:35,151 INFO L430 AbstractCegarLoop]: === Iteration 748 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:35,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:35,151 INFO L82 PathProgramCache]: Analyzing trace with hash 166264519, now seen corresponding path program 743 times [2021-05-22 02:03:35,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:35,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774689248] [2021-05-22 02:03:35,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:35,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:35,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:35,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774689248] [2021-05-22 02:03:35,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774689248] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:35,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:35,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:35,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679862888] [2021-05-22 02:03:35,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:35,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:35,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:35,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:35,258 INFO L87 Difference]: Start difference. First operand 5216 states and 24630 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:35,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:35,369 INFO L93 Difference]: Finished difference Result 11855 states and 52742 transitions. [2021-05-22 02:03:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:35,370 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:35,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:35,400 INFO L225 Difference]: With dead ends: 11855 [2021-05-22 02:03:35,400 INFO L226 Difference]: Without dead ends: 11378 [2021-05-22 02:03:35,400 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:35,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11378 states. [2021-05-22 02:03:35,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11378 to 5294. [2021-05-22 02:03:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5294 states, 5293 states have (on average 4.708671830719819) internal successors, (24923), 5293 states have internal predecessors, (24923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:35,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 24923 transitions. [2021-05-22 02:03:35,649 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 24923 transitions. Word has length 29 [2021-05-22 02:03:35,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:35,649 INFO L482 AbstractCegarLoop]: Abstraction has 5294 states and 24923 transitions. [2021-05-22 02:03:35,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:35,650 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 24923 transitions. [2021-05-22 02:03:35,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:35,658 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:35,659 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:35,659 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable747 [2021-05-22 02:03:35,659 INFO L430 AbstractCegarLoop]: === Iteration 749 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:35,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:35,659 INFO L82 PathProgramCache]: Analyzing trace with hash -40543447, now seen corresponding path program 744 times [2021-05-22 02:03:35,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:35,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326042818] [2021-05-22 02:03:35,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:35,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:35,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326042818] [2021-05-22 02:03:35,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326042818] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:35,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:35,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:35,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628981864] [2021-05-22 02:03:35,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:35,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:35,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:35,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:35,767 INFO L87 Difference]: Start difference. First operand 5294 states and 24923 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:35,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:35,880 INFO L93 Difference]: Finished difference Result 11853 states and 52659 transitions. [2021-05-22 02:03:35,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:35,880 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:35,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:35,909 INFO L225 Difference]: With dead ends: 11853 [2021-05-22 02:03:35,909 INFO L226 Difference]: Without dead ends: 11177 [2021-05-22 02:03:35,909 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:36,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11177 states. [2021-05-22 02:03:36,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11177 to 5093. [2021-05-22 02:03:36,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 5092 states have (on average 4.757855459544383) internal successors, (24227), 5092 states have internal predecessors, (24227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:36,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 24227 transitions. [2021-05-22 02:03:36,154 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 24227 transitions. Word has length 29 [2021-05-22 02:03:36,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:36,154 INFO L482 AbstractCegarLoop]: Abstraction has 5093 states and 24227 transitions. [2021-05-22 02:03:36,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:36,154 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 24227 transitions. [2021-05-22 02:03:36,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:36,162 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:36,162 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:36,162 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable748 [2021-05-22 02:03:36,162 INFO L430 AbstractCegarLoop]: === Iteration 750 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:36,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:36,163 INFO L82 PathProgramCache]: Analyzing trace with hash 684954571, now seen corresponding path program 745 times [2021-05-22 02:03:36,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:36,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063889167] [2021-05-22 02:03:36,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:36,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:36,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:36,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063889167] [2021-05-22 02:03:36,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063889167] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:36,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:36,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:36,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534805657] [2021-05-22 02:03:36,282 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:36,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:36,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:36,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:36,283 INFO L87 Difference]: Start difference. First operand 5093 states and 24227 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:36,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:36,406 INFO L93 Difference]: Finished difference Result 11454 states and 51040 transitions. [2021-05-22 02:03:36,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:36,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:36,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:36,434 INFO L225 Difference]: With dead ends: 11454 [2021-05-22 02:03:36,434 INFO L226 Difference]: Without dead ends: 11039 [2021-05-22 02:03:36,434 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:36,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11039 states. [2021-05-22 02:03:36,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11039 to 5253. [2021-05-22 02:03:36,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5253 states, 5252 states have (on average 4.7484767707539985) internal successors, (24939), 5252 states have internal predecessors, (24939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:36,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5253 states to 5253 states and 24939 transitions. [2021-05-22 02:03:36,681 INFO L78 Accepts]: Start accepts. Automaton has 5253 states and 24939 transitions. Word has length 29 [2021-05-22 02:03:36,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:36,681 INFO L482 AbstractCegarLoop]: Abstraction has 5253 states and 24939 transitions. [2021-05-22 02:03:36,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:36,681 INFO L276 IsEmpty]: Start isEmpty. Operand 5253 states and 24939 transitions. [2021-05-22 02:03:36,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:36,690 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:36,690 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:36,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable749 [2021-05-22 02:03:36,690 INFO L430 AbstractCegarLoop]: === Iteration 751 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:36,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:36,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1855192117, now seen corresponding path program 746 times [2021-05-22 02:03:36,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:36,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893790204] [2021-05-22 02:03:36,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:36,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:36,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:36,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893790204] [2021-05-22 02:03:36,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893790204] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:36,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:36,812 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:36,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219736654] [2021-05-22 02:03:36,812 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:36,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:36,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:36,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:36,812 INFO L87 Difference]: Start difference. First operand 5253 states and 24939 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:36,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:36,909 INFO L93 Difference]: Finished difference Result 11581 states and 51519 transitions. [2021-05-22 02:03:36,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:36,909 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:36,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:36,937 INFO L225 Difference]: With dead ends: 11581 [2021-05-22 02:03:36,937 INFO L226 Difference]: Without dead ends: 10959 [2021-05-22 02:03:36,937 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:37,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10959 states. [2021-05-22 02:03:37,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10959 to 5173. [2021-05-22 02:03:37,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 4.752320185614849) internal successors, (24579), 5172 states have internal predecessors, (24579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:37,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 24579 transitions. [2021-05-22 02:03:37,180 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 24579 transitions. Word has length 29 [2021-05-22 02:03:37,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:37,180 INFO L482 AbstractCegarLoop]: Abstraction has 5173 states and 24579 transitions. [2021-05-22 02:03:37,180 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:37,180 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 24579 transitions. [2021-05-22 02:03:37,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:37,189 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:37,189 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:37,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable750 [2021-05-22 02:03:37,189 INFO L430 AbstractCegarLoop]: === Iteration 752 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:37,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:37,189 INFO L82 PathProgramCache]: Analyzing trace with hash 465152715, now seen corresponding path program 747 times [2021-05-22 02:03:37,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:37,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419400666] [2021-05-22 02:03:37,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:37,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:37,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419400666] [2021-05-22 02:03:37,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419400666] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:37,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:37,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:37,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125284300] [2021-05-22 02:03:37,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:37,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:37,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:37,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:37,313 INFO L87 Difference]: Start difference. First operand 5173 states and 24579 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:37,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:37,424 INFO L93 Difference]: Finished difference Result 11357 states and 50598 transitions. [2021-05-22 02:03:37,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:37,425 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:37,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:37,455 INFO L225 Difference]: With dead ends: 11357 [2021-05-22 02:03:37,455 INFO L226 Difference]: Without dead ends: 10942 [2021-05-22 02:03:37,455 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:37,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10942 states. [2021-05-22 02:03:37,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10942 to 5221. [2021-05-22 02:03:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5221 states, 5220 states have (on average 4.742337164750958) internal successors, (24755), 5220 states have internal predecessors, (24755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:37,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 24755 transitions. [2021-05-22 02:03:37,700 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 24755 transitions. Word has length 29 [2021-05-22 02:03:37,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:37,700 INFO L482 AbstractCegarLoop]: Abstraction has 5221 states and 24755 transitions. [2021-05-22 02:03:37,700 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:37,700 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 24755 transitions. [2021-05-22 02:03:37,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:37,709 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:37,709 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:37,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable751 [2021-05-22 02:03:37,709 INFO L430 AbstractCegarLoop]: === Iteration 753 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:37,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:37,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1181815661, now seen corresponding path program 748 times [2021-05-22 02:03:37,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:37,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627602279] [2021-05-22 02:03:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:37,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:37,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:37,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627602279] [2021-05-22 02:03:37,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627602279] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:37,833 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:37,833 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:37,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843643778] [2021-05-22 02:03:37,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:37,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:37,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:37,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:37,833 INFO L87 Difference]: Start difference. First operand 5221 states and 24755 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:37,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:37,943 INFO L93 Difference]: Finished difference Result 11419 states and 50819 transitions. [2021-05-22 02:03:37,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:37,944 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:37,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:37,972 INFO L225 Difference]: With dead ends: 11419 [2021-05-22 02:03:37,972 INFO L226 Difference]: Without dead ends: 10894 [2021-05-22 02:03:37,972 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:38,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10894 states. [2021-05-22 02:03:38,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10894 to 5173. [2021-05-22 02:03:38,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 4.747679814385151) internal successors, (24555), 5172 states have internal predecessors, (24555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:38,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 24555 transitions. [2021-05-22 02:03:38,231 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 24555 transitions. Word has length 29 [2021-05-22 02:03:38,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:38,231 INFO L482 AbstractCegarLoop]: Abstraction has 5173 states and 24555 transitions. [2021-05-22 02:03:38,231 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:38,231 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 24555 transitions. [2021-05-22 02:03:38,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:38,240 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:38,240 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:38,240 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable752 [2021-05-22 02:03:38,240 INFO L430 AbstractCegarLoop]: === Iteration 754 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:38,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:38,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1029926035, now seen corresponding path program 749 times [2021-05-22 02:03:38,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:38,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693031252] [2021-05-22 02:03:38,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:38,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:38,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:38,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693031252] [2021-05-22 02:03:38,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693031252] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:38,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:38,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:38,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458458867] [2021-05-22 02:03:38,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:38,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:38,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:38,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:38,378 INFO L87 Difference]: Start difference. First operand 5173 states and 24555 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:38,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:38,476 INFO L93 Difference]: Finished difference Result 11706 states and 52034 transitions. [2021-05-22 02:03:38,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:38,476 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:38,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:38,505 INFO L225 Difference]: With dead ends: 11706 [2021-05-22 02:03:38,505 INFO L226 Difference]: Without dead ends: 11164 [2021-05-22 02:03:38,505 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:38,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11164 states. [2021-05-22 02:03:38,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11164 to 5316. [2021-05-22 02:03:38,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 5315 states have (on average 4.717591721542804) internal successors, (25074), 5315 states have internal predecessors, (25074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:38,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 25074 transitions. [2021-05-22 02:03:38,747 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 25074 transitions. Word has length 29 [2021-05-22 02:03:38,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:38,748 INFO L482 AbstractCegarLoop]: Abstraction has 5316 states and 25074 transitions. [2021-05-22 02:03:38,748 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:38,748 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 25074 transitions. [2021-05-22 02:03:38,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:38,756 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:38,756 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:38,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable753 [2021-05-22 02:03:38,756 INFO L430 AbstractCegarLoop]: === Iteration 755 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:38,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:38,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1221704267, now seen corresponding path program 750 times [2021-05-22 02:03:38,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:38,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116509357] [2021-05-22 02:03:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:38,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:38,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116509357] [2021-05-22 02:03:38,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116509357] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:38,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:38,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:38,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597480735] [2021-05-22 02:03:38,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:38,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:38,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:38,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:38,871 INFO L87 Difference]: Start difference. First operand 5316 states and 25074 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:38,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:38,983 INFO L93 Difference]: Finished difference Result 11641 states and 51665 transitions. [2021-05-22 02:03:38,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:38,983 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:38,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:39,011 INFO L225 Difference]: With dead ends: 11641 [2021-05-22 02:03:39,011 INFO L226 Difference]: Without dead ends: 10965 [2021-05-22 02:03:39,011 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:39,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10965 states. [2021-05-22 02:03:39,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10965 to 5117. [2021-05-22 02:03:39,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.755082095387021) internal successors, (24327), 5116 states have internal predecessors, (24327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:39,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24327 transitions. [2021-05-22 02:03:39,250 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24327 transitions. Word has length 29 [2021-05-22 02:03:39,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:39,250 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24327 transitions. [2021-05-22 02:03:39,250 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:39,250 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24327 transitions. [2021-05-22 02:03:39,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:39,259 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:39,259 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:39,259 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable754 [2021-05-22 02:03:39,259 INFO L430 AbstractCegarLoop]: === Iteration 756 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:39,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:39,259 INFO L82 PathProgramCache]: Analyzing trace with hash -123578293, now seen corresponding path program 751 times [2021-05-22 02:03:39,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:39,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119854059] [2021-05-22 02:03:39,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:39,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:39,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:39,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119854059] [2021-05-22 02:03:39,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119854059] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:39,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:39,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:39,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085828943] [2021-05-22 02:03:39,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:39,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:39,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:39,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:39,379 INFO L87 Difference]: Start difference. First operand 5117 states and 24327 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:39,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:39,507 INFO L93 Difference]: Finished difference Result 11289 states and 50297 transitions. [2021-05-22 02:03:39,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:39,508 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:39,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:39,536 INFO L225 Difference]: With dead ends: 11289 [2021-05-22 02:03:39,537 INFO L226 Difference]: Without dead ends: 10874 [2021-05-22 02:03:39,537 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:39,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10874 states. [2021-05-22 02:03:39,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10874 to 5229. [2021-05-22 02:03:39,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5228 states have (on average 4.745026778882938) internal successors, (24807), 5228 states have internal predecessors, (24807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:39,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 24807 transitions. [2021-05-22 02:03:39,800 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 24807 transitions. Word has length 29 [2021-05-22 02:03:39,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:39,800 INFO L482 AbstractCegarLoop]: Abstraction has 5229 states and 24807 transitions. [2021-05-22 02:03:39,800 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:39,800 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 24807 transitions. [2021-05-22 02:03:39,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:39,809 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:39,809 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:39,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable755 [2021-05-22 02:03:39,809 INFO L430 AbstractCegarLoop]: === Iteration 757 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:39,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:39,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1631242315, now seen corresponding path program 752 times [2021-05-22 02:03:39,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:39,810 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919894017] [2021-05-22 02:03:39,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:39,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:39,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:39,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919894017] [2021-05-22 02:03:39,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919894017] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:39,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:39,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:39,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844797710] [2021-05-22 02:03:39,931 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:39,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:39,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:39,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:39,932 INFO L87 Difference]: Start difference. First operand 5229 states and 24807 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:40,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:40,027 INFO L93 Difference]: Finished difference Result 11416 states and 50776 transitions. [2021-05-22 02:03:40,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:40,027 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:40,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:40,054 INFO L225 Difference]: With dead ends: 11416 [2021-05-22 02:03:40,054 INFO L226 Difference]: Without dead ends: 10794 [2021-05-22 02:03:40,054 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:40,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10794 states. [2021-05-22 02:03:40,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10794 to 5149. [2021-05-22 02:03:40,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5149 states, 5148 states have (on average 4.7503885003885005) internal successors, (24455), 5148 states have internal predecessors, (24455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:40,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 24455 transitions. [2021-05-22 02:03:40,301 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 24455 transitions. Word has length 29 [2021-05-22 02:03:40,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:40,301 INFO L482 AbstractCegarLoop]: Abstraction has 5149 states and 24455 transitions. [2021-05-22 02:03:40,301 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:40,301 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 24455 transitions. [2021-05-22 02:03:40,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:40,310 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:40,310 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:40,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable756 [2021-05-22 02:03:40,310 INFO L430 AbstractCegarLoop]: === Iteration 758 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:40,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:40,310 INFO L82 PathProgramCache]: Analyzing trace with hash -38790295, now seen corresponding path program 753 times [2021-05-22 02:03:40,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:40,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574345484] [2021-05-22 02:03:40,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:40,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:40,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:40,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574345484] [2021-05-22 02:03:40,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574345484] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:40,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:40,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:40,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079256158] [2021-05-22 02:03:40,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:40,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:40,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:40,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:40,424 INFO L87 Difference]: Start difference. First operand 5149 states and 24455 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:40,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:40,534 INFO L93 Difference]: Finished difference Result 11114 states and 49514 transitions. [2021-05-22 02:03:40,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:40,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:40,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:40,563 INFO L225 Difference]: With dead ends: 11114 [2021-05-22 02:03:40,563 INFO L226 Difference]: Without dead ends: 10699 [2021-05-22 02:03:40,563 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:40,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10699 states. [2021-05-22 02:03:40,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10699 to 5181. [2021-05-22 02:03:40,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5181 states, 5180 states have (on average 4.742664092664093) internal successors, (24567), 5180 states have internal predecessors, (24567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:40,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 24567 transitions. [2021-05-22 02:03:40,806 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 24567 transitions. Word has length 29 [2021-05-22 02:03:40,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:40,806 INFO L482 AbstractCegarLoop]: Abstraction has 5181 states and 24567 transitions. [2021-05-22 02:03:40,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:40,806 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 24567 transitions. [2021-05-22 02:03:40,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:40,815 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:40,815 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:40,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable757 [2021-05-22 02:03:40,815 INFO L430 AbstractCegarLoop]: === Iteration 759 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:40,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:40,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1854056007, now seen corresponding path program 754 times [2021-05-22 02:03:40,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:40,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005874411] [2021-05-22 02:03:40,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:40,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:40,960 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:40,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005874411] [2021-05-22 02:03:40,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005874411] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:40,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:40,960 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:40,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482543129] [2021-05-22 02:03:40,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:40,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:40,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:40,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:40,961 INFO L87 Difference]: Start difference. First operand 5181 states and 24567 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:41,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:41,064 INFO L93 Difference]: Finished difference Result 11114 states and 49482 transitions. [2021-05-22 02:03:41,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:41,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:41,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:41,092 INFO L225 Difference]: With dead ends: 11114 [2021-05-22 02:03:41,092 INFO L226 Difference]: Without dead ends: 10667 [2021-05-22 02:03:41,093 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:41,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10667 states. [2021-05-22 02:03:41,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10667 to 5149. [2021-05-22 02:03:41,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5149 states, 5148 states have (on average 4.747280497280498) internal successors, (24439), 5148 states have internal predecessors, (24439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:41,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 24439 transitions. [2021-05-22 02:03:41,351 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 24439 transitions. Word has length 29 [2021-05-22 02:03:41,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:41,351 INFO L482 AbstractCegarLoop]: Abstraction has 5149 states and 24439 transitions. [2021-05-22 02:03:41,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:41,351 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 24439 transitions. [2021-05-22 02:03:41,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:41,360 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:41,360 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:41,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable758 [2021-05-22 02:03:41,360 INFO L430 AbstractCegarLoop]: === Iteration 760 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:41,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:41,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1719307739, now seen corresponding path program 755 times [2021-05-22 02:03:41,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:41,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570983330] [2021-05-22 02:03:41,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:41,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:41,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:41,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570983330] [2021-05-22 02:03:41,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570983330] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:41,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:41,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:41,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963031445] [2021-05-22 02:03:41,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:41,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:41,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:41,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:41,484 INFO L87 Difference]: Start difference. First operand 5149 states and 24439 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:41,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:41,586 INFO L93 Difference]: Finished difference Result 11416 states and 50776 transitions. [2021-05-22 02:03:41,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:41,586 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:41,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:41,614 INFO L225 Difference]: With dead ends: 11416 [2021-05-22 02:03:41,614 INFO L226 Difference]: Without dead ends: 10874 [2021-05-22 02:03:41,614 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:41,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10874 states. [2021-05-22 02:03:41,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10874 to 5229. [2021-05-22 02:03:41,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5228 states have (on average 4.729724560061209) internal successors, (24727), 5228 states have internal predecessors, (24727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:41,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 24727 transitions. [2021-05-22 02:03:41,862 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 24727 transitions. Word has length 29 [2021-05-22 02:03:41,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:41,862 INFO L482 AbstractCegarLoop]: Abstraction has 5229 states and 24727 transitions. [2021-05-22 02:03:41,862 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:41,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 24727 transitions. [2021-05-22 02:03:41,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:41,871 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:41,871 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:41,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable759 [2021-05-22 02:03:41,871 INFO L430 AbstractCegarLoop]: === Iteration 761 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:41,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:41,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1926115705, now seen corresponding path program 756 times [2021-05-22 02:03:41,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:41,871 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845151724] [2021-05-22 02:03:41,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:41,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:41,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:41,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845151724] [2021-05-22 02:03:41,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845151724] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:41,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:41,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:41,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060711389] [2021-05-22 02:03:41,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:41,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:41,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:41,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:41,998 INFO L87 Difference]: Start difference. First operand 5229 states and 24727 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:42,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:42,094 INFO L93 Difference]: Finished difference Result 11289 states and 50169 transitions. [2021-05-22 02:03:42,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:42,094 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:42,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:42,122 INFO L225 Difference]: With dead ends: 11289 [2021-05-22 02:03:42,122 INFO L226 Difference]: Without dead ends: 10762 [2021-05-22 02:03:42,122 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:42,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10762 states. [2021-05-22 02:03:42,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10762 to 5117. [2021-05-22 02:03:42,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.751954652071931) internal successors, (24311), 5116 states have internal predecessors, (24311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:42,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24311 transitions. [2021-05-22 02:03:42,368 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24311 transitions. Word has length 29 [2021-05-22 02:03:42,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:42,368 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24311 transitions. [2021-05-22 02:03:42,368 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:42,368 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24311 transitions. [2021-05-22 02:03:42,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:42,376 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:42,376 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:42,377 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable760 [2021-05-22 02:03:42,377 INFO L430 AbstractCegarLoop]: === Iteration 762 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:42,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:42,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1147363945, now seen corresponding path program 757 times [2021-05-22 02:03:42,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:42,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524967737] [2021-05-22 02:03:42,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:42,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:42,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:42,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524967737] [2021-05-22 02:03:42,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524967737] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:42,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:42,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:42,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769590036] [2021-05-22 02:03:42,500 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:42,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:42,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:42,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:42,501 INFO L87 Difference]: Start difference. First operand 5117 states and 24311 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:42,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:42,616 INFO L93 Difference]: Finished difference Result 11047 states and 49253 transitions. [2021-05-22 02:03:42,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:42,616 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:42,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:42,643 INFO L225 Difference]: With dead ends: 11047 [2021-05-22 02:03:42,643 INFO L226 Difference]: Without dead ends: 10632 [2021-05-22 02:03:42,643 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:42,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10632 states. [2021-05-22 02:03:42,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10632 to 5181. [2021-05-22 02:03:42,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5181 states, 5180 states have (on average 4.742664092664093) internal successors, (24567), 5180 states have internal predecessors, (24567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:42,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 24567 transitions. [2021-05-22 02:03:42,887 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 24567 transitions. Word has length 29 [2021-05-22 02:03:42,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:42,887 INFO L482 AbstractCegarLoop]: Abstraction has 5181 states and 24567 transitions. [2021-05-22 02:03:42,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:42,887 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 24567 transitions. [2021-05-22 02:03:42,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:42,896 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:42,896 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:42,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable761 [2021-05-22 02:03:42,897 INFO L430 AbstractCegarLoop]: === Iteration 763 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:42,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:42,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1864026891, now seen corresponding path program 758 times [2021-05-22 02:03:42,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:42,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737013192] [2021-05-22 02:03:42,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:43,020 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:43,020 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737013192] [2021-05-22 02:03:43,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737013192] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:43,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:43,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:43,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278531095] [2021-05-22 02:03:43,021 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:43,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:43,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:43,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:43,021 INFO L87 Difference]: Start difference. First operand 5181 states and 24567 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:43,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:43,141 INFO L93 Difference]: Finished difference Result 11109 states and 49474 transitions. [2021-05-22 02:03:43,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:43,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:43,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:43,170 INFO L225 Difference]: With dead ends: 11109 [2021-05-22 02:03:43,170 INFO L226 Difference]: Without dead ends: 10584 [2021-05-22 02:03:43,171 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:43,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10584 states. [2021-05-22 02:03:43,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10584 to 5133. [2021-05-22 02:03:43,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5133 states, 5132 states have (on average 4.749610288386594) internal successors, (24375), 5132 states have internal predecessors, (24375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:43,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5133 states to 5133 states and 24375 transitions. [2021-05-22 02:03:43,414 INFO L78 Accepts]: Start accepts. Automaton has 5133 states and 24375 transitions. Word has length 29 [2021-05-22 02:03:43,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:43,414 INFO L482 AbstractCegarLoop]: Abstraction has 5133 states and 24375 transitions. [2021-05-22 02:03:43,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:43,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5133 states and 24375 transitions. [2021-05-22 02:03:43,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:43,423 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:43,423 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:43,423 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable762 [2021-05-22 02:03:43,423 INFO L430 AbstractCegarLoop]: === Iteration 764 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:43,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:43,423 INFO L82 PathProgramCache]: Analyzing trace with hash 666461899, now seen corresponding path program 759 times [2021-05-22 02:03:43,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:43,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142154614] [2021-05-22 02:03:43,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:43,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:43,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142154614] [2021-05-22 02:03:43,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142154614] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:43,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:43,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:43,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555474907] [2021-05-22 02:03:43,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:43,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:43,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:43,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:43,540 INFO L87 Difference]: Start difference. First operand 5133 states and 24375 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:43,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:43,657 INFO L93 Difference]: Finished difference Result 10969 states and 48888 transitions. [2021-05-22 02:03:43,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:43,657 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:43,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:43,686 INFO L225 Difference]: With dead ends: 10969 [2021-05-22 02:03:43,686 INFO L226 Difference]: Without dead ends: 10554 [2021-05-22 02:03:43,686 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:43,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10554 states. [2021-05-22 02:03:43,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10554 to 5165. [2021-05-22 02:03:43,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.741866769945778) internal successors, (24487), 5164 states have internal predecessors, (24487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24487 transitions. [2021-05-22 02:03:43,984 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24487 transitions. Word has length 29 [2021-05-22 02:03:43,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:43,985 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24487 transitions. [2021-05-22 02:03:43,985 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:43,985 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24487 transitions. [2021-05-22 02:03:43,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:43,993 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:43,993 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:43,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable763 [2021-05-22 02:03:43,994 INFO L430 AbstractCegarLoop]: === Iteration 765 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:43,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:43,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1077869895, now seen corresponding path program 760 times [2021-05-22 02:03:43,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:43,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073435576] [2021-05-22 02:03:43,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:44,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:44,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:44,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073435576] [2021-05-22 02:03:44,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073435576] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:44,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:44,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:44,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87718966] [2021-05-22 02:03:44,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:44,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:44,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:44,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:44,110 INFO L87 Difference]: Start difference. First operand 5165 states and 24487 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:44,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:44,206 INFO L93 Difference]: Finished difference Result 10969 states and 48856 transitions. [2021-05-22 02:03:44,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:44,206 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:44,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:44,234 INFO L225 Difference]: With dead ends: 10969 [2021-05-22 02:03:44,234 INFO L226 Difference]: Without dead ends: 10522 [2021-05-22 02:03:44,234 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:44,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10522 states. [2021-05-22 02:03:44,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10522 to 5133. [2021-05-22 02:03:44,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5133 states, 5132 states have (on average 4.746492595479345) internal successors, (24359), 5132 states have internal predecessors, (24359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:44,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5133 states to 5133 states and 24359 transitions. [2021-05-22 02:03:44,475 INFO L78 Accepts]: Start accepts. Automaton has 5133 states and 24359 transitions. Word has length 29 [2021-05-22 02:03:44,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:44,475 INFO L482 AbstractCegarLoop]: Abstraction has 5133 states and 24359 transitions. [2021-05-22 02:03:44,475 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:44,475 INFO L276 IsEmpty]: Start isEmpty. Operand 5133 states and 24359 transitions. [2021-05-22 02:03:44,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:44,484 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:44,484 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:44,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable764 [2021-05-22 02:03:44,484 INFO L430 AbstractCegarLoop]: === Iteration 766 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:44,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:44,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1213565383, now seen corresponding path program 761 times [2021-05-22 02:03:44,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:44,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834699496] [2021-05-22 02:03:44,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:44,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:44,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:44,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834699496] [2021-05-22 02:03:44,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834699496] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:44,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:44,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:44,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279135451] [2021-05-22 02:03:44,605 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:44,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:44,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:44,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:44,605 INFO L87 Difference]: Start difference. First operand 5133 states and 24359 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:44,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:44,719 INFO L93 Difference]: Finished difference Result 11109 states and 49490 transitions. [2021-05-22 02:03:44,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:44,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:44,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:44,747 INFO L225 Difference]: With dead ends: 11109 [2021-05-22 02:03:44,747 INFO L226 Difference]: Without dead ends: 10632 [2021-05-22 02:03:44,747 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:44,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10632 states. [2021-05-22 02:03:44,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10632 to 5181. [2021-05-22 02:03:44,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5181 states, 5180 states have (on average 4.736486486486487) internal successors, (24535), 5180 states have internal predecessors, (24535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:44,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 24535 transitions. [2021-05-22 02:03:44,993 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 24535 transitions. Word has length 29 [2021-05-22 02:03:44,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:44,994 INFO L482 AbstractCegarLoop]: Abstraction has 5181 states and 24535 transitions. [2021-05-22 02:03:44,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:44,994 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 24535 transitions. [2021-05-22 02:03:45,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:45,003 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:45,003 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:45,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable765 [2021-05-22 02:03:45,003 INFO L430 AbstractCegarLoop]: === Iteration 767 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:45,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:45,003 INFO L82 PathProgramCache]: Analyzing trace with hash -2000339287, now seen corresponding path program 762 times [2021-05-22 02:03:45,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:45,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707123823] [2021-05-22 02:03:45,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:45,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:45,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:45,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707123823] [2021-05-22 02:03:45,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707123823] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:45,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:45,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:45,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836014800] [2021-05-22 02:03:45,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:45,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:45,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:45,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:45,150 INFO L87 Difference]: Start difference. First operand 5181 states and 24535 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:45,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:45,264 INFO L93 Difference]: Finished difference Result 11047 states and 49173 transitions. [2021-05-22 02:03:45,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:45,264 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:45,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:45,293 INFO L225 Difference]: With dead ends: 11047 [2021-05-22 02:03:45,293 INFO L226 Difference]: Without dead ends: 10568 [2021-05-22 02:03:45,293 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:45,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10568 states. [2021-05-22 02:03:45,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10568 to 5117. [2021-05-22 02:03:45,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.750390930414386) internal successors, (24303), 5116 states have internal predecessors, (24303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:45,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24303 transitions. [2021-05-22 02:03:45,538 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24303 transitions. Word has length 29 [2021-05-22 02:03:45,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:45,538 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24303 transitions. [2021-05-22 02:03:45,538 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:45,538 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24303 transitions. [2021-05-22 02:03:45,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:45,548 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:45,548 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:45,548 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable766 [2021-05-22 02:03:45,548 INFO L430 AbstractCegarLoop]: === Iteration 768 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:45,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:45,548 INFO L82 PathProgramCache]: Analyzing trace with hash -473446875, now seen corresponding path program 763 times [2021-05-22 02:03:45,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:45,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725868542] [2021-05-22 02:03:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:45,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:45,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:45,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725868542] [2021-05-22 02:03:45,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725868542] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:45,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:45,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:45,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457041121] [2021-05-22 02:03:45,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:45,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:45,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:45,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:45,666 INFO L87 Difference]: Start difference. First operand 5117 states and 24303 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:45,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:45,784 INFO L93 Difference]: Finished difference Result 11706 states and 52050 transitions. [2021-05-22 02:03:45,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:45,784 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:45,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:45,813 INFO L225 Difference]: With dead ends: 11706 [2021-05-22 02:03:45,814 INFO L226 Difference]: Without dead ends: 11164 [2021-05-22 02:03:45,814 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:45,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11164 states. [2021-05-22 02:03:46,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11164 to 5316. [2021-05-22 02:03:46,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 5315 states have (on average 4.720602069614299) internal successors, (25090), 5315 states have internal predecessors, (25090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:46,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 25090 transitions. [2021-05-22 02:03:46,065 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 25090 transitions. Word has length 29 [2021-05-22 02:03:46,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:46,065 INFO L482 AbstractCegarLoop]: Abstraction has 5316 states and 25090 transitions. [2021-05-22 02:03:46,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:46,065 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 25090 transitions. [2021-05-22 02:03:46,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:46,074 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:46,074 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:46,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable767 [2021-05-22 02:03:46,075 INFO L430 AbstractCegarLoop]: === Iteration 769 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:46,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:46,075 INFO L82 PathProgramCache]: Analyzing trace with hash 607615751, now seen corresponding path program 764 times [2021-05-22 02:03:46,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:46,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034838988] [2021-05-22 02:03:46,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:46,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:46,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:46,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034838988] [2021-05-22 02:03:46,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034838988] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:46,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:46,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:46,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586248483] [2021-05-22 02:03:46,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:46,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:46,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:46,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:46,190 INFO L87 Difference]: Start difference. First operand 5316 states and 25090 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:46,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:46,313 INFO L93 Difference]: Finished difference Result 11641 states and 51681 transitions. [2021-05-22 02:03:46,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:46,313 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:46,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:46,342 INFO L225 Difference]: With dead ends: 11641 [2021-05-22 02:03:46,343 INFO L226 Difference]: Without dead ends: 11021 [2021-05-22 02:03:46,343 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:46,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11021 states. [2021-05-22 02:03:46,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11021 to 5173. [2021-05-22 02:03:46,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 4.739945862335653) internal successors, (24515), 5172 states have internal predecessors, (24515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:46,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 24515 transitions. [2021-05-22 02:03:46,592 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 24515 transitions. Word has length 29 [2021-05-22 02:03:46,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:46,592 INFO L482 AbstractCegarLoop]: Abstraction has 5173 states and 24515 transitions. [2021-05-22 02:03:46,592 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:46,592 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 24515 transitions. [2021-05-22 02:03:46,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:46,601 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:46,601 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:46,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable768 [2021-05-22 02:03:46,601 INFO L430 AbstractCegarLoop]: === Iteration 770 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:46,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:46,601 INFO L82 PathProgramCache]: Analyzing trace with hash -954348921, now seen corresponding path program 765 times [2021-05-22 02:03:46,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:46,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173761312] [2021-05-22 02:03:46,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:46,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:46,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:46,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173761312] [2021-05-22 02:03:46,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173761312] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:46,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:46,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:46,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231152617] [2021-05-22 02:03:46,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:46,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:46,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:46,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:46,725 INFO L87 Difference]: Start difference. First operand 5173 states and 24515 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:46,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:46,824 INFO L93 Difference]: Finished difference Result 11581 states and 51463 transitions. [2021-05-22 02:03:46,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:46,824 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:46,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:46,854 INFO L225 Difference]: With dead ends: 11581 [2021-05-22 02:03:46,854 INFO L226 Difference]: Without dead ends: 11039 [2021-05-22 02:03:46,854 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:46,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11039 states. [2021-05-22 02:03:47,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11039 to 5253. [2021-05-22 02:03:47,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5253 states, 5252 states have (on average 4.722581873571973) internal successors, (24803), 5252 states have internal predecessors, (24803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:47,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5253 states to 5253 states and 24803 transitions. [2021-05-22 02:03:47,108 INFO L78 Accepts]: Start accepts. Automaton has 5253 states and 24803 transitions. Word has length 29 [2021-05-22 02:03:47,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:47,108 INFO L482 AbstractCegarLoop]: Abstraction has 5253 states and 24803 transitions. [2021-05-22 02:03:47,108 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:47,108 INFO L276 IsEmpty]: Start isEmpty. Operand 5253 states and 24803 transitions. [2021-05-22 02:03:47,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:47,118 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:47,118 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:47,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable769 [2021-05-22 02:03:47,118 INFO L430 AbstractCegarLoop]: === Iteration 771 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:47,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:47,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1652372103, now seen corresponding path program 766 times [2021-05-22 02:03:47,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:47,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36169617] [2021-05-22 02:03:47,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:47,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:47,240 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:47,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36169617] [2021-05-22 02:03:47,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36169617] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:47,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:47,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:47,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824290874] [2021-05-22 02:03:47,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:47,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:47,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:47,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:47,240 INFO L87 Difference]: Start difference. First operand 5253 states and 24803 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:47,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:47,337 INFO L93 Difference]: Finished difference Result 11454 states and 50856 transitions. [2021-05-22 02:03:47,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:47,338 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:47,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:47,369 INFO L225 Difference]: With dead ends: 11454 [2021-05-22 02:03:47,369 INFO L226 Difference]: Without dead ends: 10959 [2021-05-22 02:03:47,369 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:47,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10959 states. [2021-05-22 02:03:47,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10959 to 5173. [2021-05-22 02:03:47,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 4.732211910286156) internal successors, (24475), 5172 states have internal predecessors, (24475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:47,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 24475 transitions. [2021-05-22 02:03:47,616 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 24475 transitions. Word has length 29 [2021-05-22 02:03:47,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:47,616 INFO L482 AbstractCegarLoop]: Abstraction has 5173 states and 24475 transitions. [2021-05-22 02:03:47,616 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:47,616 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 24475 transitions. [2021-05-22 02:03:47,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:47,625 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:47,625 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:47,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable770 [2021-05-22 02:03:47,625 INFO L430 AbstractCegarLoop]: === Iteration 772 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:47,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:47,625 INFO L82 PathProgramCache]: Analyzing trace with hash -566343959, now seen corresponding path program 767 times [2021-05-22 02:03:47,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:47,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837163160] [2021-05-22 02:03:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:47,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:47,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:47,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837163160] [2021-05-22 02:03:47,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837163160] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:47,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:47,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:47,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119955388] [2021-05-22 02:03:47,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:47,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:47,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:47,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:47,747 INFO L87 Difference]: Start difference. First operand 5173 states and 24475 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:47,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:47,861 INFO L93 Difference]: Finished difference Result 11419 states and 50763 transitions. [2021-05-22 02:03:47,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:47,862 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:47,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:47,891 INFO L225 Difference]: With dead ends: 11419 [2021-05-22 02:03:47,891 INFO L226 Difference]: Without dead ends: 10942 [2021-05-22 02:03:47,891 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:48,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10942 states. [2021-05-22 02:03:48,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10942 to 5221. [2021-05-22 02:03:48,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5221 states, 5220 states have (on average 4.722413793103448) internal successors, (24651), 5220 states have internal predecessors, (24651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:48,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 24651 transitions. [2021-05-22 02:03:48,143 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 24651 transitions. Word has length 29 [2021-05-22 02:03:48,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:48,143 INFO L482 AbstractCegarLoop]: Abstraction has 5221 states and 24651 transitions. [2021-05-22 02:03:48,143 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:48,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 24651 transitions. [2021-05-22 02:03:48,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:48,152 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:48,152 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:48,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable771 [2021-05-22 02:03:48,152 INFO L430 AbstractCegarLoop]: === Iteration 773 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:48,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:48,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1413140921, now seen corresponding path program 768 times [2021-05-22 02:03:48,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:48,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782006956] [2021-05-22 02:03:48,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:48,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:48,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782006956] [2021-05-22 02:03:48,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782006956] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:48,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:48,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:48,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596423734] [2021-05-22 02:03:48,275 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:48,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:48,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:48,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:48,275 INFO L87 Difference]: Start difference. First operand 5221 states and 24651 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:48,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:48,386 INFO L93 Difference]: Finished difference Result 11357 states and 50446 transitions. [2021-05-22 02:03:48,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:48,386 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:48,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:48,416 INFO L225 Difference]: With dead ends: 11357 [2021-05-22 02:03:48,416 INFO L226 Difference]: Without dead ends: 10814 [2021-05-22 02:03:48,416 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:48,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10814 states. [2021-05-22 02:03:48,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10814 to 5093. [2021-05-22 02:03:48,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 5092 states have (on average 4.755498821681068) internal successors, (24215), 5092 states have internal predecessors, (24215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:48,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 24215 transitions. [2021-05-22 02:03:48,672 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 24215 transitions. Word has length 29 [2021-05-22 02:03:48,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:48,672 INFO L482 AbstractCegarLoop]: Abstraction has 5093 states and 24215 transitions. [2021-05-22 02:03:48,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:48,672 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 24215 transitions. [2021-05-22 02:03:48,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:48,681 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:48,681 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:48,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable772 [2021-05-22 02:03:48,681 INFO L430 AbstractCegarLoop]: === Iteration 774 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:48,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:48,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1341320395, now seen corresponding path program 769 times [2021-05-22 02:03:48,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:48,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845894518] [2021-05-22 02:03:48,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:48,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:48,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:48,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845894518] [2021-05-22 02:03:48,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845894518] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:48,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:48,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:48,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498671335] [2021-05-22 02:03:48,805 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:48,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:48,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:48,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:48,805 INFO L87 Difference]: Start difference. First operand 5093 states and 24215 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:48,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:48,923 INFO L93 Difference]: Finished difference Result 11214 states and 50025 transitions. [2021-05-22 02:03:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:48,923 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:48,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:48,953 INFO L225 Difference]: With dead ends: 11214 [2021-05-22 02:03:48,953 INFO L226 Difference]: Without dead ends: 10799 [2021-05-22 02:03:48,953 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:49,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10799 states. [2021-05-22 02:03:49,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10799 to 5221. [2021-05-22 02:03:49,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5221 states, 5220 states have (on average 4.747701149425287) internal successors, (24783), 5220 states have internal predecessors, (24783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 24783 transitions. [2021-05-22 02:03:49,201 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 24783 transitions. Word has length 29 [2021-05-22 02:03:49,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:49,201 INFO L482 AbstractCegarLoop]: Abstraction has 5221 states and 24783 transitions. [2021-05-22 02:03:49,201 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:49,202 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 24783 transitions. [2021-05-22 02:03:49,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:49,211 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:49,211 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:49,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable773 [2021-05-22 02:03:49,211 INFO L430 AbstractCegarLoop]: === Iteration 775 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:49,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:49,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1198826293, now seen corresponding path program 770 times [2021-05-22 02:03:49,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:49,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649275727] [2021-05-22 02:03:49,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:49,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:49,335 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649275727] [2021-05-22 02:03:49,335 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649275727] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:49,335 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:49,335 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:49,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497136077] [2021-05-22 02:03:49,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:49,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:49,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:49,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:49,335 INFO L87 Difference]: Start difference. First operand 5221 states and 24783 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:49,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:49,435 INFO L93 Difference]: Finished difference Result 11341 states and 50504 transitions. [2021-05-22 02:03:49,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:49,435 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:49,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:49,463 INFO L225 Difference]: With dead ends: 11341 [2021-05-22 02:03:49,463 INFO L226 Difference]: Without dead ends: 10719 [2021-05-22 02:03:49,464 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:49,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10719 states. [2021-05-22 02:03:49,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10719 to 5141. [2021-05-22 02:03:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5140 states have (on average 4.753112840466926) internal successors, (24431), 5140 states have internal predecessors, (24431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:49,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 24431 transitions. [2021-05-22 02:03:49,707 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 24431 transitions. Word has length 29 [2021-05-22 02:03:49,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:49,707 INFO L482 AbstractCegarLoop]: Abstraction has 5141 states and 24431 transitions. [2021-05-22 02:03:49,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:49,707 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 24431 transitions. [2021-05-22 02:03:49,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:49,716 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:49,716 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:49,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable774 [2021-05-22 02:03:49,716 INFO L430 AbstractCegarLoop]: === Iteration 776 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:49,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:49,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1426108393, now seen corresponding path program 771 times [2021-05-22 02:03:49,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:49,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309101675] [2021-05-22 02:03:49,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:49,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:49,832 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:49,832 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309101675] [2021-05-22 02:03:49,832 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309101675] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:49,832 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:49,832 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:49,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332178127] [2021-05-22 02:03:49,832 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:49,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:49,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:49,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:49,833 INFO L87 Difference]: Start difference. First operand 5141 states and 24431 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:49,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:49,945 INFO L93 Difference]: Finished difference Result 11039 states and 49242 transitions. [2021-05-22 02:03:49,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:49,945 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:49,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:49,973 INFO L225 Difference]: With dead ends: 11039 [2021-05-22 02:03:49,973 INFO L226 Difference]: Without dead ends: 10624 [2021-05-22 02:03:49,973 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:50,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10624 states. [2021-05-22 02:03:50,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10624 to 5173. [2021-05-22 02:03:50,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 4.745359628770301) internal successors, (24543), 5172 states have internal predecessors, (24543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:50,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 24543 transitions. [2021-05-22 02:03:50,219 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 24543 transitions. Word has length 29 [2021-05-22 02:03:50,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:50,219 INFO L482 AbstractCegarLoop]: Abstraction has 5173 states and 24543 transitions. [2021-05-22 02:03:50,219 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:50,219 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 24543 transitions. [2021-05-22 02:03:50,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:50,228 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:50,228 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:50,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable775 [2021-05-22 02:03:50,228 INFO L430 AbstractCegarLoop]: === Iteration 777 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:50,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:50,228 INFO L82 PathProgramCache]: Analyzing trace with hash -976012601, now seen corresponding path program 772 times [2021-05-22 02:03:50,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:50,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463724959] [2021-05-22 02:03:50,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:50,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:50,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463724959] [2021-05-22 02:03:50,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463724959] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:50,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:50,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:50,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42435287] [2021-05-22 02:03:50,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:50,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:50,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:50,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:50,346 INFO L87 Difference]: Start difference. First operand 5173 states and 24543 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:50,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:50,453 INFO L93 Difference]: Finished difference Result 11039 states and 49210 transitions. [2021-05-22 02:03:50,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:50,453 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:50,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:50,481 INFO L225 Difference]: With dead ends: 11039 [2021-05-22 02:03:50,482 INFO L226 Difference]: Without dead ends: 10592 [2021-05-22 02:03:50,482 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:50,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10592 states. [2021-05-22 02:03:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10592 to 5141. [2021-05-22 02:03:50,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5140 states have (on average 4.75) internal successors, (24415), 5140 states have internal predecessors, (24415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:50,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 24415 transitions. [2021-05-22 02:03:50,727 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 24415 transitions. Word has length 29 [2021-05-22 02:03:50,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:50,727 INFO L482 AbstractCegarLoop]: Abstraction has 5141 states and 24415 transitions. [2021-05-22 02:03:50,727 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:50,727 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 24415 transitions. [2021-05-22 02:03:50,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:50,735 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:50,736 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:50,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable776 [2021-05-22 02:03:50,736 INFO L430 AbstractCegarLoop]: === Iteration 778 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:50,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:50,736 INFO L82 PathProgramCache]: Analyzing trace with hash -254409051, now seen corresponding path program 773 times [2021-05-22 02:03:50,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:50,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492497907] [2021-05-22 02:03:50,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:50,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:50,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:50,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492497907] [2021-05-22 02:03:50,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492497907] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:50,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:50,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:50,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147084020] [2021-05-22 02:03:50,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:50,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:50,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:50,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:50,860 INFO L87 Difference]: Start difference. First operand 5141 states and 24415 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:50,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:50,959 INFO L93 Difference]: Finished difference Result 11341 states and 50504 transitions. [2021-05-22 02:03:50,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:50,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:50,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:50,989 INFO L225 Difference]: With dead ends: 11341 [2021-05-22 02:03:50,989 INFO L226 Difference]: Without dead ends: 10799 [2021-05-22 02:03:50,989 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:51,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10799 states. [2021-05-22 02:03:51,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10799 to 5221. [2021-05-22 02:03:51,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5221 states, 5220 states have (on average 4.732375478927203) internal successors, (24703), 5220 states have internal predecessors, (24703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:51,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 24703 transitions. [2021-05-22 02:03:51,237 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 24703 transitions. Word has length 29 [2021-05-22 02:03:51,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:51,237 INFO L482 AbstractCegarLoop]: Abstraction has 5221 states and 24703 transitions. [2021-05-22 02:03:51,237 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:51,237 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 24703 transitions. [2021-05-22 02:03:51,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:51,246 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:51,246 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:51,246 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable777 [2021-05-22 02:03:51,246 INFO L430 AbstractCegarLoop]: === Iteration 779 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:51,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:51,246 INFO L82 PathProgramCache]: Analyzing trace with hash -461217017, now seen corresponding path program 774 times [2021-05-22 02:03:51,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:51,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118521850] [2021-05-22 02:03:51,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:51,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:51,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:51,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118521850] [2021-05-22 02:03:51,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118521850] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:51,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:51,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:51,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558963161] [2021-05-22 02:03:51,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:51,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:51,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:51,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:51,371 INFO L87 Difference]: Start difference. First operand 5221 states and 24703 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:51,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:51,471 INFO L93 Difference]: Finished difference Result 11214 states and 49897 transitions. [2021-05-22 02:03:51,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:51,471 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:51,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:51,498 INFO L225 Difference]: With dead ends: 11214 [2021-05-22 02:03:51,499 INFO L226 Difference]: Without dead ends: 10687 [2021-05-22 02:03:51,499 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:51,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10687 states. [2021-05-22 02:03:51,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10687 to 5109. [2021-05-22 02:03:51,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 4.754698512137823) internal successors, (24287), 5108 states have internal predecessors, (24287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:51,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 24287 transitions. [2021-05-22 02:03:51,746 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 24287 transitions. Word has length 29 [2021-05-22 02:03:51,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:51,746 INFO L482 AbstractCegarLoop]: Abstraction has 5109 states and 24287 transitions. [2021-05-22 02:03:51,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:51,746 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 24287 transitions. [2021-05-22 02:03:51,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:51,755 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:51,755 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:51,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable778 [2021-05-22 02:03:51,756 INFO L430 AbstractCegarLoop]: === Iteration 780 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:51,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:51,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1495599831, now seen corresponding path program 775 times [2021-05-22 02:03:51,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:51,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437846967] [2021-05-22 02:03:51,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:51,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:51,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437846967] [2021-05-22 02:03:51,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437846967] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:51,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:51,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:51,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352512596] [2021-05-22 02:03:51,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:51,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:51,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:51,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:51,883 INFO L87 Difference]: Start difference. First operand 5109 states and 24287 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:52,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:52,002 INFO L93 Difference]: Finished difference Result 11328 states and 50544 transitions. [2021-05-22 02:03:52,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:52,002 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:52,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:52,031 INFO L225 Difference]: With dead ends: 11328 [2021-05-22 02:03:52,031 INFO L226 Difference]: Without dead ends: 10913 [2021-05-22 02:03:52,031 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:52,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10913 states. [2021-05-22 02:03:52,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10913 to 5229. [2021-05-22 02:03:52,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5228 states have (on average 4.745791889824025) internal successors, (24811), 5228 states have internal predecessors, (24811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 24811 transitions. [2021-05-22 02:03:52,279 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 24811 transitions. Word has length 29 [2021-05-22 02:03:52,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:52,279 INFO L482 AbstractCegarLoop]: Abstraction has 5229 states and 24811 transitions. [2021-05-22 02:03:52,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 24811 transitions. [2021-05-22 02:03:52,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:52,288 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:52,288 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:52,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable779 [2021-05-22 02:03:52,288 INFO L430 AbstractCegarLoop]: === Iteration 781 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:52,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:52,288 INFO L82 PathProgramCache]: Analyzing trace with hash 259220777, now seen corresponding path program 776 times [2021-05-22 02:03:52,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:52,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504507764] [2021-05-22 02:03:52,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:52,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:52,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:52,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504507764] [2021-05-22 02:03:52,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504507764] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:52,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:52,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:52,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135266650] [2021-05-22 02:03:52,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:52,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:52,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:52,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:52,418 INFO L87 Difference]: Start difference. First operand 5229 states and 24811 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:52,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:52,522 INFO L93 Difference]: Finished difference Result 11455 states and 51023 transitions. [2021-05-22 02:03:52,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:52,523 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:52,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:52,552 INFO L225 Difference]: With dead ends: 11455 [2021-05-22 02:03:52,552 INFO L226 Difference]: Without dead ends: 10833 [2021-05-22 02:03:52,552 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:52,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10833 states. [2021-05-22 02:03:52,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10833 to 5149. [2021-05-22 02:03:52,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5149 states, 5148 states have (on average 4.7496114996114995) internal successors, (24451), 5148 states have internal predecessors, (24451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:52,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 24451 transitions. [2021-05-22 02:03:52,795 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 24451 transitions. Word has length 29 [2021-05-22 02:03:52,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:52,795 INFO L482 AbstractCegarLoop]: Abstraction has 5149 states and 24451 transitions. [2021-05-22 02:03:52,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:52,795 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 24451 transitions. [2021-05-22 02:03:52,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:52,803 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:52,804 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:52,804 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable780 [2021-05-22 02:03:52,804 INFO L430 AbstractCegarLoop]: === Iteration 782 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:52,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:52,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1827743639, now seen corresponding path program 777 times [2021-05-22 02:03:52,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:52,804 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135523791] [2021-05-22 02:03:52,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:52,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:52,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135523791] [2021-05-22 02:03:52,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135523791] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:52,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:52,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:52,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032714795] [2021-05-22 02:03:52,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:52,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:52,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:52,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:52,934 INFO L87 Difference]: Start difference. First operand 5149 states and 24451 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:53,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:53,052 INFO L93 Difference]: Finished difference Result 11229 states and 50097 transitions. [2021-05-22 02:03:53,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:53,052 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:53,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:53,080 INFO L225 Difference]: With dead ends: 11229 [2021-05-22 02:03:53,081 INFO L226 Difference]: Without dead ends: 10814 [2021-05-22 02:03:53,081 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 150.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:53,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10814 states. [2021-05-22 02:03:53,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10814 to 5197. [2021-05-22 02:03:53,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5196 states have (on average 4.739607390300231) internal successors, (24627), 5196 states have internal predecessors, (24627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:53,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 24627 transitions. [2021-05-22 02:03:53,329 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 24627 transitions. Word has length 29 [2021-05-22 02:03:53,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:53,329 INFO L482 AbstractCegarLoop]: Abstraction has 5197 states and 24627 transitions. [2021-05-22 02:03:53,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:53,330 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 24627 transitions. [2021-05-22 02:03:53,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:53,339 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:53,339 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:53,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable781 [2021-05-22 02:03:53,339 INFO L430 AbstractCegarLoop]: === Iteration 783 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:53,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:53,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1952542731, now seen corresponding path program 778 times [2021-05-22 02:03:53,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:53,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342468879] [2021-05-22 02:03:53,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:53,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:53,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:53,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342468879] [2021-05-22 02:03:53,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342468879] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:53,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:53,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:53,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719134309] [2021-05-22 02:03:53,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:53,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:53,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:53,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:53,472 INFO L87 Difference]: Start difference. First operand 5197 states and 24627 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:53,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:53,588 INFO L93 Difference]: Finished difference Result 11289 states and 50313 transitions. [2021-05-22 02:03:53,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:53,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:53,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:53,617 INFO L225 Difference]: With dead ends: 11289 [2021-05-22 02:03:53,617 INFO L226 Difference]: Without dead ends: 10766 [2021-05-22 02:03:53,618 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 153.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:53,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10766 states. [2021-05-22 02:03:53,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10766 to 5149. [2021-05-22 02:03:53,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5149 states, 5148 states have (on average 4.744949494949495) internal successors, (24427), 5148 states have internal predecessors, (24427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:53,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 24427 transitions. [2021-05-22 02:03:53,866 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 24427 transitions. Word has length 29 [2021-05-22 02:03:53,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:53,866 INFO L482 AbstractCegarLoop]: Abstraction has 5149 states and 24427 transitions. [2021-05-22 02:03:53,866 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:53,866 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 24427 transitions. [2021-05-22 02:03:53,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:53,875 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:53,875 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:53,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable782 [2021-05-22 02:03:53,875 INFO L430 AbstractCegarLoop]: === Iteration 784 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:53,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:53,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1603596277, now seen corresponding path program 779 times [2021-05-22 02:03:53,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:53,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471904129] [2021-05-22 02:03:53,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:53,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:53,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:53,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471904129] [2021-05-22 02:03:53,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471904129] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:53,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:53,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:53,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089243251] [2021-05-22 02:03:53,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:53,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:53,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:53,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:53,995 INFO L87 Difference]: Start difference. First operand 5149 states and 24427 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:54,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:54,100 INFO L93 Difference]: Finished difference Result 11545 states and 51418 transitions. [2021-05-22 02:03:54,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:54,100 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:54,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:54,129 INFO L225 Difference]: With dead ends: 11545 [2021-05-22 02:03:54,129 INFO L226 Difference]: Without dead ends: 11003 [2021-05-22 02:03:54,129 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:54,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11003 states. [2021-05-22 02:03:54,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11003 to 5259. [2021-05-22 02:03:54,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5259 states, 5258 states have (on average 4.7227082540890075) internal successors, (24832), 5258 states have internal predecessors, (24832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:54,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5259 states to 5259 states and 24832 transitions. [2021-05-22 02:03:54,379 INFO L78 Accepts]: Start accepts. Automaton has 5259 states and 24832 transitions. Word has length 29 [2021-05-22 02:03:54,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:54,379 INFO L482 AbstractCegarLoop]: Abstraction has 5259 states and 24832 transitions. [2021-05-22 02:03:54,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:54,379 INFO L276 IsEmpty]: Start isEmpty. Operand 5259 states and 24832 transitions. [2021-05-22 02:03:54,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:54,388 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:54,388 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:54,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable783 [2021-05-22 02:03:54,388 INFO L430 AbstractCegarLoop]: === Iteration 785 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:54,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:54,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1950418921, now seen corresponding path program 780 times [2021-05-22 02:03:54,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:54,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672775013] [2021-05-22 02:03:54,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:54,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:54,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:54,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672775013] [2021-05-22 02:03:54,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672775013] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:54,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:54,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:54,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832846821] [2021-05-22 02:03:54,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:54,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:54,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:54,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:54,562 INFO L87 Difference]: Start difference. First operand 5259 states and 24832 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:54,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:54,688 INFO L93 Difference]: Finished difference Result 11478 states and 51045 transitions. [2021-05-22 02:03:54,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:54,688 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:54,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:54,717 INFO L225 Difference]: With dead ends: 11478 [2021-05-22 02:03:54,717 INFO L226 Difference]: Without dead ends: 10853 [2021-05-22 02:03:54,717 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:54,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10853 states. [2021-05-22 02:03:54,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10853 to 5109. [2021-05-22 02:03:54,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 4.751566170712608) internal successors, (24271), 5108 states have internal predecessors, (24271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 24271 transitions. [2021-05-22 02:03:54,960 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 24271 transitions. Word has length 29 [2021-05-22 02:03:54,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:54,960 INFO L482 AbstractCegarLoop]: Abstraction has 5109 states and 24271 transitions. [2021-05-22 02:03:54,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:54,960 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 24271 transitions. [2021-05-22 02:03:54,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:54,968 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:54,968 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:54,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable784 [2021-05-22 02:03:54,968 INFO L430 AbstractCegarLoop]: === Iteration 786 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:54,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:54,969 INFO L82 PathProgramCache]: Analyzing trace with hash 11484167, now seen corresponding path program 781 times [2021-05-22 02:03:54,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:54,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455753210] [2021-05-22 02:03:54,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:55,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:55,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:55,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455753210] [2021-05-22 02:03:55,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455753210] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:55,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:55,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:55,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798010174] [2021-05-22 02:03:55,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:55,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:55,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:55,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:55,112 INFO L87 Difference]: Start difference. First operand 5109 states and 24271 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:55,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:55,257 INFO L93 Difference]: Finished difference Result 10892 states and 48611 transitions. [2021-05-22 02:03:55,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:55,258 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:55,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:55,293 INFO L225 Difference]: With dead ends: 10892 [2021-05-22 02:03:55,293 INFO L226 Difference]: Without dead ends: 10477 [2021-05-22 02:03:55,294 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 166.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:55,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10477 states. [2021-05-22 02:03:55,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10477 to 5157. [2021-05-22 02:03:55,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 4.744569433669511) internal successors, (24463), 5156 states have internal predecessors, (24463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:55,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 24463 transitions. [2021-05-22 02:03:55,556 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 24463 transitions. Word has length 29 [2021-05-22 02:03:55,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:55,556 INFO L482 AbstractCegarLoop]: Abstraction has 5157 states and 24463 transitions. [2021-05-22 02:03:55,556 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:55,556 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 24463 transitions. [2021-05-22 02:03:55,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:55,565 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:55,565 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:55,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable785 [2021-05-22 02:03:55,565 INFO L430 AbstractCegarLoop]: === Iteration 787 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:55,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:55,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1904330469, now seen corresponding path program 782 times [2021-05-22 02:03:55,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:55,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605027717] [2021-05-22 02:03:55,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:55,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:55,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:55,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605027717] [2021-05-22 02:03:55,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605027717] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:55,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:55,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:55,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945720321] [2021-05-22 02:03:55,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:55,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:55,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:55,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:55,701 INFO L87 Difference]: Start difference. First operand 5157 states and 24463 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:55,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:55,800 INFO L93 Difference]: Finished difference Result 10892 states and 48579 transitions. [2021-05-22 02:03:55,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:55,800 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:55,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:55,828 INFO L225 Difference]: With dead ends: 10892 [2021-05-22 02:03:55,828 INFO L226 Difference]: Without dead ends: 10445 [2021-05-22 02:03:55,828 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:55,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10445 states. [2021-05-22 02:03:56,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10445 to 5125. [2021-05-22 02:03:56,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5124 states have (on average 4.749219359875098) internal successors, (24335), 5124 states have internal predecessors, (24335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 24335 transitions. [2021-05-22 02:03:56,070 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 24335 transitions. Word has length 29 [2021-05-22 02:03:56,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:56,070 INFO L482 AbstractCegarLoop]: Abstraction has 5125 states and 24335 transitions. [2021-05-22 02:03:56,070 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:56,070 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 24335 transitions. [2021-05-22 02:03:56,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:56,079 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:56,079 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:56,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable786 [2021-05-22 02:03:56,079 INFO L430 AbstractCegarLoop]: === Iteration 788 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:56,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:56,079 INFO L82 PathProgramCache]: Analyzing trace with hash -469417879, now seen corresponding path program 783 times [2021-05-22 02:03:56,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:56,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892152563] [2021-05-22 02:03:56,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:56,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:56,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:56,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892152563] [2021-05-22 02:03:56,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892152563] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:56,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:56,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:56,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917400610] [2021-05-22 02:03:56,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:56,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:56,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:56,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:56,209 INFO L87 Difference]: Start difference. First operand 5125 states and 24335 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:56,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:56,319 INFO L93 Difference]: Finished difference Result 10968 states and 48939 transitions. [2021-05-22 02:03:56,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:56,319 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:56,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:56,347 INFO L225 Difference]: With dead ends: 10968 [2021-05-22 02:03:56,347 INFO L226 Difference]: Without dead ends: 10553 [2021-05-22 02:03:56,347 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:56,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10553 states. [2021-05-22 02:03:56,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10553 to 5173. [2021-05-22 02:03:56,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 4.739172467130704) internal successors, (24511), 5172 states have internal predecessors, (24511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:56,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 24511 transitions. [2021-05-22 02:03:56,592 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 24511 transitions. Word has length 29 [2021-05-22 02:03:56,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:56,592 INFO L482 AbstractCegarLoop]: Abstraction has 5173 states and 24511 transitions. [2021-05-22 02:03:56,592 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:56,592 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 24511 transitions. [2021-05-22 02:03:56,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:56,601 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:56,601 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:56,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable787 [2021-05-22 02:03:56,601 INFO L430 AbstractCegarLoop]: === Iteration 789 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:56,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:56,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1829430185, now seen corresponding path program 784 times [2021-05-22 02:03:56,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:56,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094593048] [2021-05-22 02:03:56,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:56,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:56,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:56,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094593048] [2021-05-22 02:03:56,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094593048] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:56,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:56,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:56,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257421106] [2021-05-22 02:03:56,729 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:56,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:56,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:56,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:56,729 INFO L87 Difference]: Start difference. First operand 5173 states and 24511 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:56,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:56,842 INFO L93 Difference]: Finished difference Result 11028 states and 49155 transitions. [2021-05-22 02:03:56,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:56,842 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:56,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:56,869 INFO L225 Difference]: With dead ends: 11028 [2021-05-22 02:03:56,870 INFO L226 Difference]: Without dead ends: 10505 [2021-05-22 02:03:56,870 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:56,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10505 states. [2021-05-22 02:03:57,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10505 to 5125. [2021-05-22 02:03:57,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5124 states have (on average 4.746096799375488) internal successors, (24319), 5124 states have internal predecessors, (24319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 24319 transitions. [2021-05-22 02:03:57,109 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 24319 transitions. Word has length 29 [2021-05-22 02:03:57,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:57,109 INFO L482 AbstractCegarLoop]: Abstraction has 5125 states and 24319 transitions. [2021-05-22 02:03:57,109 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:57,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 24319 transitions. [2021-05-22 02:03:57,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:57,118 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:57,118 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:57,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable788 [2021-05-22 02:03:57,118 INFO L430 AbstractCegarLoop]: === Iteration 790 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:57,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:57,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1773634405, now seen corresponding path program 785 times [2021-05-22 02:03:57,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:57,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648891057] [2021-05-22 02:03:57,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:57,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:57,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:57,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648891057] [2021-05-22 02:03:57,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648891057] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:57,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:57,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:57,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371172777] [2021-05-22 02:03:57,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:57,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:57,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:57,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:57,245 INFO L87 Difference]: Start difference. First operand 5125 states and 24319 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:57,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:57,357 INFO L93 Difference]: Finished difference Result 10968 states and 48923 transitions. [2021-05-22 02:03:57,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:57,357 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:57,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:57,385 INFO L225 Difference]: With dead ends: 10968 [2021-05-22 02:03:57,385 INFO L226 Difference]: Without dead ends: 10553 [2021-05-22 02:03:57,385 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:57,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10553 states. [2021-05-22 02:03:57,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10553 to 5173. [2021-05-22 02:03:57,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 4.736078886310905) internal successors, (24495), 5172 states have internal predecessors, (24495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:57,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 24495 transitions. [2021-05-22 02:03:57,629 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 24495 transitions. Word has length 29 [2021-05-22 02:03:57,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:57,629 INFO L482 AbstractCegarLoop]: Abstraction has 5173 states and 24495 transitions. [2021-05-22 02:03:57,629 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:57,629 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 24495 transitions. [2021-05-22 02:03:57,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:57,638 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:57,638 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:57,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable789 [2021-05-22 02:03:57,638 INFO L430 AbstractCegarLoop]: === Iteration 791 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:57,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:57,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1440270265, now seen corresponding path program 786 times [2021-05-22 02:03:57,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:57,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408658358] [2021-05-22 02:03:57,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:57,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:57,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408658358] [2021-05-22 02:03:57,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408658358] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:57,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:57,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:57,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734072871] [2021-05-22 02:03:57,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:57,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:57,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:57,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:57,765 INFO L87 Difference]: Start difference. First operand 5173 states and 24495 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:57,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:57,893 INFO L93 Difference]: Finished difference Result 11028 states and 49139 transitions. [2021-05-22 02:03:57,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:57,894 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:57,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:57,921 INFO L225 Difference]: With dead ends: 11028 [2021-05-22 02:03:57,921 INFO L226 Difference]: Without dead ends: 10489 [2021-05-22 02:03:57,921 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:58,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10489 states. [2021-05-22 02:03:58,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10489 to 5109. [2021-05-22 02:03:58,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 4.75) internal successors, (24263), 5108 states have internal predecessors, (24263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:58,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 24263 transitions. [2021-05-22 02:03:58,166 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 24263 transitions. Word has length 29 [2021-05-22 02:03:58,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:58,166 INFO L482 AbstractCegarLoop]: Abstraction has 5109 states and 24263 transitions. [2021-05-22 02:03:58,166 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:58,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 24263 transitions. [2021-05-22 02:03:58,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:58,175 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:58,175 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:58,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable790 [2021-05-22 02:03:58,175 INFO L430 AbstractCegarLoop]: === Iteration 792 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:58,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:58,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1609326653, now seen corresponding path program 787 times [2021-05-22 02:03:58,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:58,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195662501] [2021-05-22 02:03:58,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:58,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:58,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195662501] [2021-05-22 02:03:58,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195662501] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:58,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:58,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:58,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447477578] [2021-05-22 02:03:58,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:58,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:58,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:58,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:58,298 INFO L87 Difference]: Start difference. First operand 5109 states and 24263 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:58,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:58,412 INFO L93 Difference]: Finished difference Result 11455 states and 51047 transitions. [2021-05-22 02:03:58,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:58,413 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:58,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:58,442 INFO L225 Difference]: With dead ends: 11455 [2021-05-22 02:03:58,442 INFO L226 Difference]: Without dead ends: 10913 [2021-05-22 02:03:58,442 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:58,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10913 states. [2021-05-22 02:03:58,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10913 to 5229. [2021-05-22 02:03:58,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5228 states have (on average 4.735080336648814) internal successors, (24755), 5228 states have internal predecessors, (24755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:58,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 24755 transitions. [2021-05-22 02:03:58,688 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 24755 transitions. Word has length 29 [2021-05-22 02:03:58,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:58,688 INFO L482 AbstractCegarLoop]: Abstraction has 5229 states and 24755 transitions. [2021-05-22 02:03:58,688 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:58,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 24755 transitions. [2021-05-22 02:03:58,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:58,697 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:58,697 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:58,697 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable791 [2021-05-22 02:03:58,697 INFO L430 AbstractCegarLoop]: === Iteration 793 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:58,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:58,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1816134619, now seen corresponding path program 788 times [2021-05-22 02:03:58,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:58,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659597196] [2021-05-22 02:03:58,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:58,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:58,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659597196] [2021-05-22 02:03:58,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659597196] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:58,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:58,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:58,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215925800] [2021-05-22 02:03:58,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:58,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:58,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:58,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:58,819 INFO L87 Difference]: Start difference. First operand 5229 states and 24755 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:58,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:58,911 INFO L93 Difference]: Finished difference Result 11328 states and 50440 transitions. [2021-05-22 02:03:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:58,911 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:58,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:58,939 INFO L225 Difference]: With dead ends: 11328 [2021-05-22 02:03:58,940 INFO L226 Difference]: Without dead ends: 10833 [2021-05-22 02:03:58,940 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:59,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10833 states. [2021-05-22 02:03:59,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10833 to 5149. [2021-05-22 02:03:59,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5149 states, 5148 states have (on average 4.744949494949495) internal successors, (24427), 5148 states have internal predecessors, (24427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 24427 transitions. [2021-05-22 02:03:59,187 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 24427 transitions. Word has length 29 [2021-05-22 02:03:59,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:59,187 INFO L482 AbstractCegarLoop]: Abstraction has 5149 states and 24427 transitions. [2021-05-22 02:03:59,187 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:59,187 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 24427 transitions. [2021-05-22 02:03:59,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:59,196 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:59,196 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:59,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable792 [2021-05-22 02:03:59,196 INFO L430 AbstractCegarLoop]: === Iteration 794 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:59,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:59,197 INFO L82 PathProgramCache]: Analyzing trace with hash -2090228699, now seen corresponding path program 789 times [2021-05-22 02:03:59,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:59,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446686656] [2021-05-22 02:03:59,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:59,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:59,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:59,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446686656] [2021-05-22 02:03:59,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446686656] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:59,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:59,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:59,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173526038] [2021-05-22 02:03:59,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:59,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:59,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:59,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:59,312 INFO L87 Difference]: Start difference. First operand 5149 states and 24427 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:59,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:59,406 INFO L93 Difference]: Finished difference Result 11545 states and 51418 transitions. [2021-05-22 02:03:59,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:59,407 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:59,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:59,435 INFO L225 Difference]: With dead ends: 11545 [2021-05-22 02:03:59,435 INFO L226 Difference]: Without dead ends: 11003 [2021-05-22 02:03:59,435 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:03:59,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11003 states. [2021-05-22 02:03:59,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11003 to 5259. [2021-05-22 02:03:59,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5259 states, 5258 states have (on average 4.7227082540890075) internal successors, (24832), 5258 states have internal predecessors, (24832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:59,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5259 states to 5259 states and 24832 transitions. [2021-05-22 02:03:59,679 INFO L78 Accepts]: Start accepts. Automaton has 5259 states and 24832 transitions. Word has length 29 [2021-05-22 02:03:59,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:03:59,679 INFO L482 AbstractCegarLoop]: Abstraction has 5259 states and 24832 transitions. [2021-05-22 02:03:59,679 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:59,679 INFO L276 IsEmpty]: Start isEmpty. Operand 5259 states and 24832 transitions. [2021-05-22 02:03:59,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:03:59,688 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:03:59,688 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:03:59,688 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable793 [2021-05-22 02:03:59,688 INFO L430 AbstractCegarLoop]: === Iteration 795 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:03:59,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:03:59,688 INFO L82 PathProgramCache]: Analyzing trace with hash -771378267, now seen corresponding path program 790 times [2021-05-22 02:03:59,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:03:59,689 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301836220] [2021-05-22 02:03:59,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:03:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:03:59,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:03:59,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:03:59,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301836220] [2021-05-22 02:03:59,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301836220] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:03:59,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:03:59,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:03:59,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723547841] [2021-05-22 02:03:59,803 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:03:59,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:03:59,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:03:59,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:03:59,803 INFO L87 Difference]: Start difference. First operand 5259 states and 24832 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:03:59,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:03:59,915 INFO L93 Difference]: Finished difference Result 11478 states and 51045 transitions. [2021-05-22 02:03:59,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:03:59,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:03:59,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:03:59,944 INFO L225 Difference]: With dead ends: 11478 [2021-05-22 02:03:59,944 INFO L226 Difference]: Without dead ends: 10893 [2021-05-22 02:03:59,945 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:00,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10893 states. [2021-05-22 02:04:00,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10893 to 5149. [2021-05-22 02:04:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5149 states, 5148 states have (on average 4.737179487179487) internal successors, (24387), 5148 states have internal predecessors, (24387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:00,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 24387 transitions. [2021-05-22 02:04:00,192 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 24387 transitions. Word has length 29 [2021-05-22 02:04:00,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:00,192 INFO L482 AbstractCegarLoop]: Abstraction has 5149 states and 24387 transitions. [2021-05-22 02:04:00,192 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:00,192 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 24387 transitions. [2021-05-22 02:04:00,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:00,201 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:00,201 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:00,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable794 [2021-05-22 02:04:00,201 INFO L430 AbstractCegarLoop]: === Iteration 796 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:00,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:00,201 INFO L82 PathProgramCache]: Analyzing trace with hash 611815303, now seen corresponding path program 791 times [2021-05-22 02:04:00,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:00,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825942945] [2021-05-22 02:04:00,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:00,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:00,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825942945] [2021-05-22 02:04:00,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825942945] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:00,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:00,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:00,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736215898] [2021-05-22 02:04:00,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:00,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:00,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:00,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:00,325 INFO L87 Difference]: Start difference. First operand 5149 states and 24387 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:00,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:00,422 INFO L93 Difference]: Finished difference Result 11229 states and 50033 transitions. [2021-05-22 02:04:00,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:00,422 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:00,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:00,451 INFO L225 Difference]: With dead ends: 11229 [2021-05-22 02:04:00,451 INFO L226 Difference]: Without dead ends: 10814 [2021-05-22 02:04:00,451 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:00,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10814 states. [2021-05-22 02:04:00,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10814 to 5197. [2021-05-22 02:04:00,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5196 states have (on average 4.7272902232486524) internal successors, (24563), 5196 states have internal predecessors, (24563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 24563 transitions. [2021-05-22 02:04:00,698 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 24563 transitions. Word has length 29 [2021-05-22 02:04:00,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:00,699 INFO L482 AbstractCegarLoop]: Abstraction has 5197 states and 24563 transitions. [2021-05-22 02:04:00,699 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:00,699 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 24563 transitions. [2021-05-22 02:04:00,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:00,707 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:00,707 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:00,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable795 [2021-05-22 02:04:00,708 INFO L430 AbstractCegarLoop]: === Iteration 797 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:00,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:00,708 INFO L82 PathProgramCache]: Analyzing trace with hash -234981659, now seen corresponding path program 792 times [2021-05-22 02:04:00,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:00,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352213154] [2021-05-22 02:04:00,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:00,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:00,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352213154] [2021-05-22 02:04:00,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352213154] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:00,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:00,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:00,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663005527] [2021-05-22 02:04:00,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:00,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:00,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:00,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:00,831 INFO L87 Difference]: Start difference. First operand 5197 states and 24563 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:00,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:00,945 INFO L93 Difference]: Finished difference Result 11289 states and 50249 transitions. [2021-05-22 02:04:00,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:00,945 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:00,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:00,973 INFO L225 Difference]: With dead ends: 11289 [2021-05-22 02:04:00,973 INFO L226 Difference]: Without dead ends: 10710 [2021-05-22 02:04:00,974 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:01,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10710 states. [2021-05-22 02:04:01,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10710 to 5093. [2021-05-22 02:04:01,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 5092 states have (on average 4.753927729772192) internal successors, (24207), 5092 states have internal predecessors, (24207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:01,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 24207 transitions. [2021-05-22 02:04:01,218 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 24207 transitions. Word has length 29 [2021-05-22 02:04:01,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:01,218 INFO L482 AbstractCegarLoop]: Abstraction has 5093 states and 24207 transitions. [2021-05-22 02:04:01,218 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:01,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 24207 transitions. [2021-05-22 02:04:01,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:01,227 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:01,227 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:01,227 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable796 [2021-05-22 02:04:01,227 INFO L430 AbstractCegarLoop]: === Iteration 798 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:01,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:01,227 INFO L82 PathProgramCache]: Analyzing trace with hash -274816249, now seen corresponding path program 793 times [2021-05-22 02:04:01,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:01,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873627651] [2021-05-22 02:04:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:01,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:01,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:01,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873627651] [2021-05-22 02:04:01,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873627651] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:01,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:01,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:01,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547329024] [2021-05-22 02:04:01,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:01,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:01,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:01,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:01,352 INFO L87 Difference]: Start difference. First operand 5093 states and 24207 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:01,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:01,462 INFO L93 Difference]: Finished difference Result 10755 states and 48015 transitions. [2021-05-22 02:04:01,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:01,462 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:01,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:01,490 INFO L225 Difference]: With dead ends: 10755 [2021-05-22 02:04:01,490 INFO L226 Difference]: Without dead ends: 10340 [2021-05-22 02:04:01,490 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:01,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10340 states. [2021-05-22 02:04:01,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10340 to 5165. [2021-05-22 02:04:01,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.7457397366382645) internal successors, (24507), 5164 states have internal predecessors, (24507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:01,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24507 transitions. [2021-05-22 02:04:01,731 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24507 transitions. Word has length 29 [2021-05-22 02:04:01,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:01,731 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24507 transitions. [2021-05-22 02:04:01,731 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:01,731 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24507 transitions. [2021-05-22 02:04:01,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:01,739 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:01,739 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:01,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable797 [2021-05-22 02:04:01,740 INFO L430 AbstractCegarLoop]: === Iteration 799 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:01,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:01,740 INFO L82 PathProgramCache]: Analyzing trace with hash 441846697, now seen corresponding path program 794 times [2021-05-22 02:04:01,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:01,740 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960970686] [2021-05-22 02:04:01,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:01,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:01,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960970686] [2021-05-22 02:04:01,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960970686] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:01,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:01,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:01,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015291384] [2021-05-22 02:04:01,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:01,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:01,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:01,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:01,864 INFO L87 Difference]: Start difference. First operand 5165 states and 24507 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:01,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:01,972 INFO L93 Difference]: Finished difference Result 10817 states and 48236 transitions. [2021-05-22 02:04:01,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:01,972 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:01,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:01,999 INFO L225 Difference]: With dead ends: 10817 [2021-05-22 02:04:02,000 INFO L226 Difference]: Without dead ends: 10292 [2021-05-22 02:04:02,000 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:02,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10292 states. [2021-05-22 02:04:02,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10292 to 5117. [2021-05-22 02:04:02,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.752736512900704) internal successors, (24315), 5116 states have internal predecessors, (24315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:02,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24315 transitions. [2021-05-22 02:04:02,241 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24315 transitions. Word has length 29 [2021-05-22 02:04:02,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:02,241 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24315 transitions. [2021-05-22 02:04:02,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:02,241 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24315 transitions. [2021-05-22 02:04:02,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:02,250 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:02,250 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:02,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable798 [2021-05-22 02:04:02,250 INFO L430 AbstractCegarLoop]: === Iteration 800 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:02,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:02,250 INFO L82 PathProgramCache]: Analyzing trace with hash -755718295, now seen corresponding path program 795 times [2021-05-22 02:04:02,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:02,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616985453] [2021-05-22 02:04:02,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:02,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:02,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:02,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616985453] [2021-05-22 02:04:02,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616985453] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:02,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:02,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:02,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979865808] [2021-05-22 02:04:02,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:02,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:02,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:02,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:02,367 INFO L87 Difference]: Start difference. First operand 5117 states and 24315 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:02,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:02,473 INFO L93 Difference]: Finished difference Result 10677 states and 47650 transitions. [2021-05-22 02:04:02,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:02,473 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:02,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:02,500 INFO L225 Difference]: With dead ends: 10677 [2021-05-22 02:04:02,500 INFO L226 Difference]: Without dead ends: 10262 [2021-05-22 02:04:02,500 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:02,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10262 states. [2021-05-22 02:04:02,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10262 to 5149. [2021-05-22 02:04:02,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5149 states, 5148 states have (on average 4.744949494949495) internal successors, (24427), 5148 states have internal predecessors, (24427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:02,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 24427 transitions. [2021-05-22 02:04:02,734 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 24427 transitions. Word has length 29 [2021-05-22 02:04:02,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:02,734 INFO L482 AbstractCegarLoop]: Abstraction has 5149 states and 24427 transitions. [2021-05-22 02:04:02,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:02,734 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 24427 transitions. [2021-05-22 02:04:02,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:02,743 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:02,743 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:02,743 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable799 [2021-05-22 02:04:02,743 INFO L430 AbstractCegarLoop]: === Iteration 801 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:02,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:02,743 INFO L82 PathProgramCache]: Analyzing trace with hash -344310299, now seen corresponding path program 796 times [2021-05-22 02:04:02,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:02,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718369934] [2021-05-22 02:04:02,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:02,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:02,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:02,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718369934] [2021-05-22 02:04:02,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718369934] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:02,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:02,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:02,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326976902] [2021-05-22 02:04:02,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:02,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:02,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:02,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:02,861 INFO L87 Difference]: Start difference. First operand 5149 states and 24427 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:02,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:02,953 INFO L93 Difference]: Finished difference Result 10677 states and 47618 transitions. [2021-05-22 02:04:02,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:02,954 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:02,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:02,980 INFO L225 Difference]: With dead ends: 10677 [2021-05-22 02:04:02,980 INFO L226 Difference]: Without dead ends: 10230 [2021-05-22 02:04:02,980 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:03,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10230 states. [2021-05-22 02:04:03,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10230 to 5117. [2021-05-22 02:04:03,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.749609069585614) internal successors, (24299), 5116 states have internal predecessors, (24299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:03,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24299 transitions. [2021-05-22 02:04:03,214 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24299 transitions. Word has length 29 [2021-05-22 02:04:03,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:03,214 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24299 transitions. [2021-05-22 02:04:03,214 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:03,214 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24299 transitions. [2021-05-22 02:04:03,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:03,222 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:03,222 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:03,222 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable800 [2021-05-22 02:04:03,222 INFO L430 AbstractCegarLoop]: === Iteration 802 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:03,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:03,222 INFO L82 PathProgramCache]: Analyzing trace with hash -208614811, now seen corresponding path program 797 times [2021-05-22 02:04:03,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:03,223 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868910394] [2021-05-22 02:04:03,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:03,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:03,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:03,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868910394] [2021-05-22 02:04:03,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868910394] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:03,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:03,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:03,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950952435] [2021-05-22 02:04:03,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:03,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:03,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:03,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:03,348 INFO L87 Difference]: Start difference. First operand 5117 states and 24299 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:03,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:03,461 INFO L93 Difference]: Finished difference Result 10817 states and 48252 transitions. [2021-05-22 02:04:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:03,461 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:03,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:03,489 INFO L225 Difference]: With dead ends: 10817 [2021-05-22 02:04:03,489 INFO L226 Difference]: Without dead ends: 10340 [2021-05-22 02:04:03,489 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:03,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10340 states. [2021-05-22 02:04:03,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10340 to 5165. [2021-05-22 02:04:03,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.739542989930286) internal successors, (24475), 5164 states have internal predecessors, (24475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24475 transitions. [2021-05-22 02:04:03,723 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24475 transitions. Word has length 29 [2021-05-22 02:04:03,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:03,723 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24475 transitions. [2021-05-22 02:04:03,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:03,723 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24475 transitions. [2021-05-22 02:04:03,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:03,731 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:03,731 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:03,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable801 [2021-05-22 02:04:03,732 INFO L430 AbstractCegarLoop]: === Iteration 803 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:03,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:03,732 INFO L82 PathProgramCache]: Analyzing trace with hash 872447815, now seen corresponding path program 798 times [2021-05-22 02:04:03,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:03,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139919180] [2021-05-22 02:04:03,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:03,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:03,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:03,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139919180] [2021-05-22 02:04:03,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139919180] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:03,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:03,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:03,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693017669] [2021-05-22 02:04:03,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:03,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:03,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:03,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:03,856 INFO L87 Difference]: Start difference. First operand 5165 states and 24475 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:03,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:03,952 INFO L93 Difference]: Finished difference Result 10755 states and 47935 transitions. [2021-05-22 02:04:03,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:03,953 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:03,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:03,979 INFO L225 Difference]: With dead ends: 10755 [2021-05-22 02:04:03,979 INFO L226 Difference]: Without dead ends: 10276 [2021-05-22 02:04:03,979 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:04,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10276 states. [2021-05-22 02:04:04,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10276 to 5101. [2021-05-22 02:04:04,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5101 states, 5100 states have (on average 4.753529411764706) internal successors, (24243), 5100 states have internal predecessors, (24243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:04,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 24243 transitions. [2021-05-22 02:04:04,211 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 24243 transitions. Word has length 29 [2021-05-22 02:04:04,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:04,211 INFO L482 AbstractCegarLoop]: Abstraction has 5101 states and 24243 transitions. [2021-05-22 02:04:04,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:04,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 24243 transitions. [2021-05-22 02:04:04,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:04,220 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:04,220 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:04,220 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable802 [2021-05-22 02:04:04,220 INFO L430 AbstractCegarLoop]: === Iteration 804 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:04,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:04,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1434785513, now seen corresponding path program 799 times [2021-05-22 02:04:04,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:04,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001129027] [2021-05-22 02:04:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:04,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:04,383 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:04,383 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001129027] [2021-05-22 02:04:04,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001129027] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:04,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:04,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:04,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027771162] [2021-05-22 02:04:04,384 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:04,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:04,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:04,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:04,384 INFO L87 Difference]: Start difference. First operand 5101 states and 24243 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:04,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:04,533 INFO L93 Difference]: Finished difference Result 10869 states and 48542 transitions. [2021-05-22 02:04:04,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:04,534 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:04,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:04,563 INFO L225 Difference]: With dead ends: 10869 [2021-05-22 02:04:04,563 INFO L226 Difference]: Without dead ends: 10454 [2021-05-22 02:04:04,563 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 180.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:04,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10454 states. [2021-05-22 02:04:04,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10454 to 5173. [2021-05-22 02:04:04,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 4.745359628770301) internal successors, (24543), 5172 states have internal predecessors, (24543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:04,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 24543 transitions. [2021-05-22 02:04:04,803 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 24543 transitions. Word has length 29 [2021-05-22 02:04:04,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:04,803 INFO L482 AbstractCegarLoop]: Abstraction has 5173 states and 24543 transitions. [2021-05-22 02:04:04,803 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:04,803 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 24543 transitions. [2021-05-22 02:04:04,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:04,812 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:04,812 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:04,812 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable803 [2021-05-22 02:04:04,812 INFO L430 AbstractCegarLoop]: === Iteration 805 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:04,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:04,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2143518837, now seen corresponding path program 800 times [2021-05-22 02:04:04,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:04,812 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312216217] [2021-05-22 02:04:04,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:04,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:04,939 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:04,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312216217] [2021-05-22 02:04:04,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312216217] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:04,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:04,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:04,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813996803] [2021-05-22 02:04:04,940 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:04,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:04,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:04,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:04,940 INFO L87 Difference]: Start difference. First operand 5173 states and 24543 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:05,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:05,055 INFO L93 Difference]: Finished difference Result 10931 states and 48763 transitions. [2021-05-22 02:04:05,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:05,055 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:05,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:05,082 INFO L225 Difference]: With dead ends: 10931 [2021-05-22 02:04:05,082 INFO L226 Difference]: Without dead ends: 10406 [2021-05-22 02:04:05,082 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:05,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10406 states. [2021-05-22 02:04:05,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10406 to 5125. [2021-05-22 02:04:05,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5124 states have (on average 4.750780640124902) internal successors, (24343), 5124 states have internal predecessors, (24343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 24343 transitions. [2021-05-22 02:04:05,357 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 24343 transitions. Word has length 29 [2021-05-22 02:04:05,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:05,357 INFO L482 AbstractCegarLoop]: Abstraction has 5125 states and 24343 transitions. [2021-05-22 02:04:05,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:05,357 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 24343 transitions. [2021-05-22 02:04:05,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:05,365 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:05,366 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:05,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable804 [2021-05-22 02:04:05,366 INFO L430 AbstractCegarLoop]: === Iteration 806 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:05,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:05,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1767211287, now seen corresponding path program 801 times [2021-05-22 02:04:05,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:05,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086906686] [2021-05-22 02:04:05,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:05,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:05,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086906686] [2021-05-22 02:04:05,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086906686] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:05,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:05,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:05,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143023401] [2021-05-22 02:04:05,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:05,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:05,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:05,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:05,494 INFO L87 Difference]: Start difference. First operand 5125 states and 24343 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:05,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:05,603 INFO L93 Difference]: Finished difference Result 10867 states and 48513 transitions. [2021-05-22 02:04:05,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:05,603 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:05,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:05,630 INFO L225 Difference]: With dead ends: 10867 [2021-05-22 02:04:05,630 INFO L226 Difference]: Without dead ends: 10452 [2021-05-22 02:04:05,630 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:05,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10452 states. [2021-05-22 02:04:05,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10452 to 5173. [2021-05-22 02:04:05,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 4.740719257540603) internal successors, (24519), 5172 states have internal predecessors, (24519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:05,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 24519 transitions. [2021-05-22 02:04:05,868 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 24519 transitions. Word has length 29 [2021-05-22 02:04:05,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:05,868 INFO L482 AbstractCegarLoop]: Abstraction has 5173 states and 24519 transitions. [2021-05-22 02:04:05,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:05,868 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 24519 transitions. [2021-05-22 02:04:05,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:05,877 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:05,877 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:05,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable805 [2021-05-22 02:04:05,877 INFO L430 AbstractCegarLoop]: === Iteration 807 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:05,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:05,877 INFO L82 PathProgramCache]: Analyzing trace with hash -737645911, now seen corresponding path program 802 times [2021-05-22 02:04:05,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:05,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246772757] [2021-05-22 02:04:05,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:06,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:06,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246772757] [2021-05-22 02:04:06,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246772757] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:06,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:06,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:06,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346105735] [2021-05-22 02:04:06,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:06,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:06,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:06,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:06,004 INFO L87 Difference]: Start difference. First operand 5173 states and 24519 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:06,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:06,112 INFO L93 Difference]: Finished difference Result 10927 states and 48729 transitions. [2021-05-22 02:04:06,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:06,113 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:06,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:06,140 INFO L225 Difference]: With dead ends: 10927 [2021-05-22 02:04:06,140 INFO L226 Difference]: Without dead ends: 10404 [2021-05-22 02:04:06,140 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:06,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10404 states. [2021-05-22 02:04:06,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10404 to 5125. [2021-05-22 02:04:06,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5124 states have (on average 4.746096799375488) internal successors, (24319), 5124 states have internal predecessors, (24319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:06,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 24319 transitions. [2021-05-22 02:04:06,376 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 24319 transitions. Word has length 29 [2021-05-22 02:04:06,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:06,376 INFO L482 AbstractCegarLoop]: Abstraction has 5125 states and 24319 transitions. [2021-05-22 02:04:06,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:06,376 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 24319 transitions. [2021-05-22 02:04:06,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:06,384 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:06,384 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:06,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable806 [2021-05-22 02:04:06,384 INFO L430 AbstractCegarLoop]: === Iteration 808 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:06,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:06,385 INFO L82 PathProgramCache]: Analyzing trace with hash -563719477, now seen corresponding path program 803 times [2021-05-22 02:04:06,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:06,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535608715] [2021-05-22 02:04:06,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:06,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:06,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535608715] [2021-05-22 02:04:06,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535608715] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:06,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:06,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:06,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699756527] [2021-05-22 02:04:06,500 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:06,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:06,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:06,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:06,501 INFO L87 Difference]: Start difference. First operand 5125 states and 24319 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:06,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:06,607 INFO L93 Difference]: Finished difference Result 11021 states and 49174 transitions. [2021-05-22 02:04:06,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:06,607 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:06,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:06,635 INFO L225 Difference]: With dead ends: 11021 [2021-05-22 02:04:06,635 INFO L226 Difference]: Without dead ends: 10544 [2021-05-22 02:04:06,635 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:06,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10544 states. [2021-05-22 02:04:06,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10544 to 5203. [2021-05-22 02:04:06,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.731257208765859) internal successors, (24612), 5202 states have internal predecessors, (24612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:06,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24612 transitions. [2021-05-22 02:04:06,873 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24612 transitions. Word has length 29 [2021-05-22 02:04:06,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:06,873 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24612 transitions. [2021-05-22 02:04:06,873 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:06,873 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24612 transitions. [2021-05-22 02:04:06,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:06,882 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:06,882 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:06,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable807 [2021-05-22 02:04:06,882 INFO L430 AbstractCegarLoop]: === Iteration 809 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:06,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:06,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1955864023, now seen corresponding path program 804 times [2021-05-22 02:04:06,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:06,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292831698] [2021-05-22 02:04:06,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:06,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:06,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:06,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292831698] [2021-05-22 02:04:06,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292831698] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:06,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:06,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:06,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621394521] [2021-05-22 02:04:06,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:06,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:06,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:06,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:06,999 INFO L87 Difference]: Start difference. First operand 5203 states and 24612 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:07,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:07,107 INFO L93 Difference]: Finished difference Result 11019 states and 49091 transitions. [2021-05-22 02:04:07,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:07,107 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:07,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:07,134 INFO L225 Difference]: With dead ends: 11019 [2021-05-22 02:04:07,134 INFO L226 Difference]: Without dead ends: 10442 [2021-05-22 02:04:07,134 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:07,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10442 states. [2021-05-22 02:04:07,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10442 to 5101. [2021-05-22 02:04:07,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5101 states, 5100 states have (on average 4.7519607843137255) internal successors, (24235), 5100 states have internal predecessors, (24235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:07,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 24235 transitions. [2021-05-22 02:04:07,368 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 24235 transitions. Word has length 29 [2021-05-22 02:04:07,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:07,368 INFO L482 AbstractCegarLoop]: Abstraction has 5101 states and 24235 transitions. [2021-05-22 02:04:07,368 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:07,368 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 24235 transitions. [2021-05-22 02:04:07,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:07,377 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:07,377 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:07,377 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable808 [2021-05-22 02:04:07,377 INFO L430 AbstractCegarLoop]: === Iteration 810 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:07,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:07,377 INFO L82 PathProgramCache]: Analyzing trace with hash 645399243, now seen corresponding path program 805 times [2021-05-22 02:04:07,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:07,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192618732] [2021-05-22 02:04:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:07,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:07,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:07,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192618732] [2021-05-22 02:04:07,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192618732] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:07,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:07,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:07,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768742316] [2021-05-22 02:04:07,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:07,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:07,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:07,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:07,495 INFO L87 Difference]: Start difference. First operand 5101 states and 24235 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:07,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:07,600 INFO L93 Difference]: Finished difference Result 10675 states and 47645 transitions. [2021-05-22 02:04:07,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:07,600 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:07,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:07,626 INFO L225 Difference]: With dead ends: 10675 [2021-05-22 02:04:07,626 INFO L226 Difference]: Without dead ends: 10260 [2021-05-22 02:04:07,626 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:07,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10260 states. [2021-05-22 02:04:07,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10260 to 5149. [2021-05-22 02:04:07,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5149 states, 5148 states have (on average 4.744949494949495) internal successors, (24427), 5148 states have internal predecessors, (24427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:07,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 24427 transitions. [2021-05-22 02:04:07,861 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 24427 transitions. Word has length 29 [2021-05-22 02:04:07,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:07,861 INFO L482 AbstractCegarLoop]: Abstraction has 5149 states and 24427 transitions. [2021-05-22 02:04:07,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:07,861 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 24427 transitions. [2021-05-22 02:04:07,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:07,870 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:07,870 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:07,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable809 [2021-05-22 02:04:07,870 INFO L430 AbstractCegarLoop]: === Iteration 811 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:07,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:07,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1056807239, now seen corresponding path program 806 times [2021-05-22 02:04:07,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:07,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769248889] [2021-05-22 02:04:07,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:07,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:07,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769248889] [2021-05-22 02:04:07,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769248889] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:07,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:07,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:07,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341157011] [2021-05-22 02:04:07,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:07,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:07,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:07,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:07,989 INFO L87 Difference]: Start difference. First operand 5149 states and 24427 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:08,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:08,092 INFO L93 Difference]: Finished difference Result 10675 states and 47613 transitions. [2021-05-22 02:04:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:08,092 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:08,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:08,119 INFO L225 Difference]: With dead ends: 10675 [2021-05-22 02:04:08,119 INFO L226 Difference]: Without dead ends: 10228 [2021-05-22 02:04:08,119 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:08,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10228 states. [2021-05-22 02:04:08,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10228 to 5117. [2021-05-22 02:04:08,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.749609069585614) internal successors, (24299), 5116 states have internal predecessors, (24299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:08,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24299 transitions. [2021-05-22 02:04:08,356 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24299 transitions. Word has length 29 [2021-05-22 02:04:08,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:08,356 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24299 transitions. [2021-05-22 02:04:08,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:08,356 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24299 transitions. [2021-05-22 02:04:08,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:08,365 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:08,365 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:08,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable810 [2021-05-22 02:04:08,365 INFO L430 AbstractCegarLoop]: === Iteration 812 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:08,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:08,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1377662295, now seen corresponding path program 807 times [2021-05-22 02:04:08,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:08,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471564913] [2021-05-22 02:04:08,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:08,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:08,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:08,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471564913] [2021-05-22 02:04:08,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471564913] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:08,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:08,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:08,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053119254] [2021-05-22 02:04:08,493 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:08,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:08,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:08,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:08,493 INFO L87 Difference]: Start difference. First operand 5117 states and 24299 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:08,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:08,597 INFO L93 Difference]: Finished difference Result 10751 states and 47973 transitions. [2021-05-22 02:04:08,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:08,597 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:08,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:08,623 INFO L225 Difference]: With dead ends: 10751 [2021-05-22 02:04:08,624 INFO L226 Difference]: Without dead ends: 10336 [2021-05-22 02:04:08,624 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:08,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10336 states. [2021-05-22 02:04:08,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10336 to 5165. [2021-05-22 02:04:08,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.739542989930286) internal successors, (24475), 5164 states have internal predecessors, (24475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:08,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24475 transitions. [2021-05-22 02:04:08,861 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24475 transitions. Word has length 29 [2021-05-22 02:04:08,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:08,861 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24475 transitions. [2021-05-22 02:04:08,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:08,861 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24475 transitions. [2021-05-22 02:04:08,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:08,869 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:08,869 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:08,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable811 [2021-05-22 02:04:08,870 INFO L430 AbstractCegarLoop]: === Iteration 813 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:08,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:08,870 INFO L82 PathProgramCache]: Analyzing trace with hash 971955851, now seen corresponding path program 808 times [2021-05-22 02:04:08,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:08,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56494065] [2021-05-22 02:04:08,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:08,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:08,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:08,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56494065] [2021-05-22 02:04:08,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56494065] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:08,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:08,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:08,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814759363] [2021-05-22 02:04:08,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:08,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:08,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:08,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:08,997 INFO L87 Difference]: Start difference. First operand 5165 states and 24475 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:09,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:09,110 INFO L93 Difference]: Finished difference Result 10811 states and 48189 transitions. [2021-05-22 02:04:09,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:09,110 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:09,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:09,137 INFO L225 Difference]: With dead ends: 10811 [2021-05-22 02:04:09,137 INFO L226 Difference]: Without dead ends: 10288 [2021-05-22 02:04:09,137 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:09,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10288 states. [2021-05-22 02:04:09,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10288 to 5117. [2021-05-22 02:04:09,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.746481626270524) internal successors, (24283), 5116 states have internal predecessors, (24283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:09,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24283 transitions. [2021-05-22 02:04:09,370 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24283 transitions. Word has length 29 [2021-05-22 02:04:09,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:09,370 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24283 transitions. [2021-05-22 02:04:09,370 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:09,370 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24283 transitions. [2021-05-22 02:04:09,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:09,379 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:09,379 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:09,379 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable812 [2021-05-22 02:04:09,379 INFO L430 AbstractCegarLoop]: === Iteration 814 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:09,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:09,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1111877019, now seen corresponding path program 809 times [2021-05-22 02:04:09,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:09,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66125640] [2021-05-22 02:04:09,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:09,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:09,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:09,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66125640] [2021-05-22 02:04:09,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66125640] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:09,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:09,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:09,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127003110] [2021-05-22 02:04:09,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:09,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:09,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:09,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:09,505 INFO L87 Difference]: Start difference. First operand 5117 states and 24283 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:09,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:09,598 INFO L93 Difference]: Finished difference Result 10751 states and 47957 transitions. [2021-05-22 02:04:09,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:09,599 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:09,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:09,625 INFO L225 Difference]: With dead ends: 10751 [2021-05-22 02:04:09,625 INFO L226 Difference]: Without dead ends: 10336 [2021-05-22 02:04:09,625 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:09,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10336 states. [2021-05-22 02:04:09,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10336 to 5165. [2021-05-22 02:04:09,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.736444616576297) internal successors, (24459), 5164 states have internal predecessors, (24459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:09,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24459 transitions. [2021-05-22 02:04:09,854 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24459 transitions. Word has length 29 [2021-05-22 02:04:09,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:09,854 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24459 transitions. [2021-05-22 02:04:09,854 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:09,854 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24459 transitions. [2021-05-22 02:04:09,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:09,863 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:09,863 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:09,863 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable813 [2021-05-22 02:04:09,863 INFO L430 AbstractCegarLoop]: === Iteration 815 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:09,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:09,863 INFO L82 PathProgramCache]: Analyzing trace with hash -30814393, now seen corresponding path program 810 times [2021-05-22 02:04:09,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:09,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50570974] [2021-05-22 02:04:09,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:09,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:09,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50570974] [2021-05-22 02:04:09,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50570974] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:09,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:09,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:09,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904717601] [2021-05-22 02:04:09,990 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:09,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:09,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:09,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:09,990 INFO L87 Difference]: Start difference. First operand 5165 states and 24459 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:10,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:10,119 INFO L93 Difference]: Finished difference Result 10811 states and 48173 transitions. [2021-05-22 02:04:10,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:10,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:10,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:10,146 INFO L225 Difference]: With dead ends: 10811 [2021-05-22 02:04:10,147 INFO L226 Difference]: Without dead ends: 10272 [2021-05-22 02:04:10,147 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:10,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10272 states. [2021-05-22 02:04:10,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10272 to 5101. [2021-05-22 02:04:10,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5101 states, 5100 states have (on average 4.750392156862745) internal successors, (24227), 5100 states have internal predecessors, (24227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 24227 transitions. [2021-05-22 02:04:10,381 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 24227 transitions. Word has length 29 [2021-05-22 02:04:10,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:10,381 INFO L482 AbstractCegarLoop]: Abstraction has 5101 states and 24227 transitions. [2021-05-22 02:04:10,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:10,381 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 24227 transitions. [2021-05-22 02:04:10,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:10,390 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:10,390 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:10,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable814 [2021-05-22 02:04:10,390 INFO L430 AbstractCegarLoop]: === Iteration 816 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:10,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:10,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1253480731, now seen corresponding path program 811 times [2021-05-22 02:04:10,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:10,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033592727] [2021-05-22 02:04:10,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:10,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:10,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:10,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033592727] [2021-05-22 02:04:10,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033592727] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:10,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:10,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:10,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203889209] [2021-05-22 02:04:10,514 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:10,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:10,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:10,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:10,514 INFO L87 Difference]: Start difference. First operand 5101 states and 24227 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:10,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:10,636 INFO L93 Difference]: Finished difference Result 10931 states and 48795 transitions. [2021-05-22 02:04:10,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:10,636 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:10,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:10,663 INFO L225 Difference]: With dead ends: 10931 [2021-05-22 02:04:10,663 INFO L226 Difference]: Without dead ends: 10454 [2021-05-22 02:04:10,663 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:10,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10454 states. [2021-05-22 02:04:10,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10454 to 5173. [2021-05-22 02:04:10,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 4.742266047950503) internal successors, (24527), 5172 states have internal predecessors, (24527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 24527 transitions. [2021-05-22 02:04:10,895 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 24527 transitions. Word has length 29 [2021-05-22 02:04:10,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:10,895 INFO L482 AbstractCegarLoop]: Abstraction has 5173 states and 24527 transitions. [2021-05-22 02:04:10,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:10,895 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 24527 transitions. [2021-05-22 02:04:10,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:10,903 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:10,904 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:10,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable815 [2021-05-22 02:04:10,904 INFO L430 AbstractCegarLoop]: === Iteration 817 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:10,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:10,904 INFO L82 PathProgramCache]: Analyzing trace with hash -172418105, now seen corresponding path program 812 times [2021-05-22 02:04:10,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:10,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33302513] [2021-05-22 02:04:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:11,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:11,025 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33302513] [2021-05-22 02:04:11,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33302513] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:11,026 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:11,026 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:11,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877167885] [2021-05-22 02:04:11,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:11,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:11,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:11,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:11,026 INFO L87 Difference]: Start difference. First operand 5173 states and 24527 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:11,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:11,119 INFO L93 Difference]: Finished difference Result 10869 states and 48478 transitions. [2021-05-22 02:04:11,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:11,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:11,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:11,146 INFO L225 Difference]: With dead ends: 10869 [2021-05-22 02:04:11,146 INFO L226 Difference]: Without dead ends: 10406 [2021-05-22 02:04:11,147 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:11,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10406 states. [2021-05-22 02:04:11,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10406 to 5125. [2021-05-22 02:04:11,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5124 states have (on average 4.7476580796252925) internal successors, (24327), 5124 states have internal predecessors, (24327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:11,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 24327 transitions. [2021-05-22 02:04:11,381 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 24327 transitions. Word has length 29 [2021-05-22 02:04:11,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:11,381 INFO L482 AbstractCegarLoop]: Abstraction has 5125 states and 24327 transitions. [2021-05-22 02:04:11,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:11,381 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 24327 transitions. [2021-05-22 02:04:11,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:11,390 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:11,390 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:11,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable816 [2021-05-22 02:04:11,390 INFO L430 AbstractCegarLoop]: === Iteration 818 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:11,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:11,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1734382777, now seen corresponding path program 813 times [2021-05-22 02:04:11,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:11,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525812980] [2021-05-22 02:04:11,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:11,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:11,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:11,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525812980] [2021-05-22 02:04:11,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525812980] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:11,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:11,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:11,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136863483] [2021-05-22 02:04:11,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:11,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:11,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:11,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:11,504 INFO L87 Difference]: Start difference. First operand 5125 states and 24327 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:11,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:11,606 INFO L93 Difference]: Finished difference Result 11021 states and 49182 transitions. [2021-05-22 02:04:11,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:11,607 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:11,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:11,633 INFO L225 Difference]: With dead ends: 11021 [2021-05-22 02:04:11,633 INFO L226 Difference]: Without dead ends: 10544 [2021-05-22 02:04:11,633 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:11,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10544 states. [2021-05-22 02:04:11,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10544 to 5203. [2021-05-22 02:04:11,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.73279507881584) internal successors, (24620), 5202 states have internal predecessors, (24620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:11,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24620 transitions. [2021-05-22 02:04:11,866 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24620 transitions. Word has length 29 [2021-05-22 02:04:11,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:11,866 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24620 transitions. [2021-05-22 02:04:11,866 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:11,866 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24620 transitions. [2021-05-22 02:04:11,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:11,875 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:11,875 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:11,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable817 [2021-05-22 02:04:11,875 INFO L430 AbstractCegarLoop]: === Iteration 819 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:11,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:11,875 INFO L82 PathProgramCache]: Analyzing trace with hash 872338247, now seen corresponding path program 814 times [2021-05-22 02:04:11,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:11,875 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273196274] [2021-05-22 02:04:11,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:11,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:11,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273196274] [2021-05-22 02:04:11,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273196274] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:11,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:11,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:11,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990093880] [2021-05-22 02:04:11,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:11,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:11,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:11,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:11,989 INFO L87 Difference]: Start difference. First operand 5203 states and 24620 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:12,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:12,092 INFO L93 Difference]: Finished difference Result 11019 states and 49099 transitions. [2021-05-22 02:04:12,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:12,093 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:12,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:12,119 INFO L225 Difference]: With dead ends: 11019 [2021-05-22 02:04:12,119 INFO L226 Difference]: Without dead ends: 10466 [2021-05-22 02:04:12,119 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:12,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10466 states. [2021-05-22 02:04:12,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10466 to 5125. [2021-05-22 02:04:12,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5125 states, 5124 states have (on average 4.742974238875878) internal successors, (24303), 5124 states have internal predecessors, (24303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:12,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5125 states to 5125 states and 24303 transitions. [2021-05-22 02:04:12,365 INFO L78 Accepts]: Start accepts. Automaton has 5125 states and 24303 transitions. Word has length 29 [2021-05-22 02:04:12,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:12,365 INFO L482 AbstractCegarLoop]: Abstraction has 5125 states and 24303 transitions. [2021-05-22 02:04:12,365 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:12,365 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states and 24303 transitions. [2021-05-22 02:04:12,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:12,373 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:12,373 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:12,374 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable818 [2021-05-22 02:04:12,374 INFO L430 AbstractCegarLoop]: === Iteration 820 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:12,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:12,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1346377815, now seen corresponding path program 815 times [2021-05-22 02:04:12,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:12,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125359647] [2021-05-22 02:04:12,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:12,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:12,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:12,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125359647] [2021-05-22 02:04:12,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125359647] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:12,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:12,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:12,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544782578] [2021-05-22 02:04:12,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:12,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:12,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:12,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:12,507 INFO L87 Difference]: Start difference. First operand 5125 states and 24303 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:12,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:12,594 INFO L93 Difference]: Finished difference Result 10867 states and 48473 transitions. [2021-05-22 02:04:12,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:12,594 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:12,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:12,620 INFO L225 Difference]: With dead ends: 10867 [2021-05-22 02:04:12,620 INFO L226 Difference]: Without dead ends: 10452 [2021-05-22 02:04:12,620 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:12,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10452 states. [2021-05-22 02:04:12,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10452 to 5173. [2021-05-22 02:04:12,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 4.7329853054911055) internal successors, (24479), 5172 states have internal predecessors, (24479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:12,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 24479 transitions. [2021-05-22 02:04:12,848 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 24479 transitions. Word has length 29 [2021-05-22 02:04:12,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:12,848 INFO L482 AbstractCegarLoop]: Abstraction has 5173 states and 24479 transitions. [2021-05-22 02:04:12,848 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:12,848 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 24479 transitions. [2021-05-22 02:04:12,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:12,856 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:12,856 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:12,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable819 [2021-05-22 02:04:12,856 INFO L430 AbstractCegarLoop]: === Iteration 821 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:12,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:12,857 INFO L82 PathProgramCache]: Analyzing trace with hash 2101792519, now seen corresponding path program 816 times [2021-05-22 02:04:12,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:12,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696317162] [2021-05-22 02:04:12,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:12,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:12,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:12,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696317162] [2021-05-22 02:04:12,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696317162] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:12,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:12,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:12,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039956910] [2021-05-22 02:04:12,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:12,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:12,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:12,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:12,979 INFO L87 Difference]: Start difference. First operand 5173 states and 24479 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:13,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:13,099 INFO L93 Difference]: Finished difference Result 10927 states and 48689 transitions. [2021-05-22 02:04:13,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:13,099 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:13,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:13,125 INFO L225 Difference]: With dead ends: 10927 [2021-05-22 02:04:13,126 INFO L226 Difference]: Without dead ends: 10372 [2021-05-22 02:04:13,126 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:13,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10372 states. [2021-05-22 02:04:13,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10372 to 5093. [2021-05-22 02:04:13,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 5092 states have (on average 4.753142183817753) internal successors, (24203), 5092 states have internal predecessors, (24203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 24203 transitions. [2021-05-22 02:04:13,353 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 24203 transitions. Word has length 29 [2021-05-22 02:04:13,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:13,353 INFO L482 AbstractCegarLoop]: Abstraction has 5093 states and 24203 transitions. [2021-05-22 02:04:13,353 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:13,353 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 24203 transitions. [2021-05-22 02:04:13,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:13,361 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:13,361 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:13,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable820 [2021-05-22 02:04:13,361 INFO L430 AbstractCegarLoop]: === Iteration 822 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:13,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:13,362 INFO L82 PathProgramCache]: Analyzing trace with hash -352136253, now seen corresponding path program 817 times [2021-05-22 02:04:13,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:13,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077508872] [2021-05-22 02:04:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:13,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:13,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:13,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077508872] [2021-05-22 02:04:13,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077508872] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:13,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:13,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:13,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101301143] [2021-05-22 02:04:13,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:13,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:13,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:13,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:13,475 INFO L87 Difference]: Start difference. First operand 5093 states and 24203 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:13,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:13,567 INFO L93 Difference]: Finished difference Result 11901 states and 52981 transitions. [2021-05-22 02:04:13,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:13,567 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:13,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:13,595 INFO L225 Difference]: With dead ends: 11901 [2021-05-22 02:04:13,595 INFO L226 Difference]: Without dead ends: 11359 [2021-05-22 02:04:13,595 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:13,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11359 states. [2021-05-22 02:04:13,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11359 to 5328. [2021-05-22 02:04:13,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5328 states, 5327 states have (on average 4.724235029097053) internal successors, (25166), 5327 states have internal predecessors, (25166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:13,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 25166 transitions. [2021-05-22 02:04:13,836 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 25166 transitions. Word has length 29 [2021-05-22 02:04:13,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:13,836 INFO L482 AbstractCegarLoop]: Abstraction has 5328 states and 25166 transitions. [2021-05-22 02:04:13,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:13,836 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 25166 transitions. [2021-05-22 02:04:13,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:13,845 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:13,845 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:13,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable821 [2021-05-22 02:04:13,845 INFO L430 AbstractCegarLoop]: === Iteration 823 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:13,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:13,845 INFO L82 PathProgramCache]: Analyzing trace with hash 728926373, now seen corresponding path program 818 times [2021-05-22 02:04:13,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:13,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314097471] [2021-05-22 02:04:13,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:13,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:13,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:13,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314097471] [2021-05-22 02:04:13,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314097471] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:13,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:13,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:13,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902800341] [2021-05-22 02:04:13,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:13,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:13,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:13,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:13,958 INFO L87 Difference]: Start difference. First operand 5328 states and 25166 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:14,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:14,065 INFO L93 Difference]: Finished difference Result 11836 states and 52612 transitions. [2021-05-22 02:04:14,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:14,066 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:14,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:14,094 INFO L225 Difference]: With dead ends: 11836 [2021-05-22 02:04:14,094 INFO L226 Difference]: Without dead ends: 11216 [2021-05-22 02:04:14,094 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:14,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11216 states. [2021-05-22 02:04:14,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11216 to 5185. [2021-05-22 02:04:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.7436342592592595) internal successors, (24591), 5184 states have internal predecessors, (24591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:14,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24591 transitions. [2021-05-22 02:04:14,337 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24591 transitions. Word has length 29 [2021-05-22 02:04:14,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:14,337 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24591 transitions. [2021-05-22 02:04:14,337 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:14,337 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24591 transitions. [2021-05-22 02:04:14,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:14,346 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:14,346 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:14,346 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable822 [2021-05-22 02:04:14,346 INFO L430 AbstractCegarLoop]: === Iteration 824 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:14,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:14,346 INFO L82 PathProgramCache]: Analyzing trace with hash -833038299, now seen corresponding path program 819 times [2021-05-22 02:04:14,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:14,346 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096472167] [2021-05-22 02:04:14,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:14,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:14,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:14,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096472167] [2021-05-22 02:04:14,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096472167] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:14,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:14,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:14,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453571919] [2021-05-22 02:04:14,467 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:14,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:14,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:14,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:14,467 INFO L87 Difference]: Start difference. First operand 5185 states and 24591 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:14,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:14,561 INFO L93 Difference]: Finished difference Result 11776 states and 52394 transitions. [2021-05-22 02:04:14,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:14,561 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:14,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:14,589 INFO L225 Difference]: With dead ends: 11776 [2021-05-22 02:04:14,589 INFO L226 Difference]: Without dead ends: 11234 [2021-05-22 02:04:14,590 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:14,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11234 states. [2021-05-22 02:04:14,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11234 to 5265. [2021-05-22 02:04:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 5264 states have (on average 4.726253799392097) internal successors, (24879), 5264 states have internal predecessors, (24879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:14,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 24879 transitions. [2021-05-22 02:04:14,833 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 24879 transitions. Word has length 29 [2021-05-22 02:04:14,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:14,834 INFO L482 AbstractCegarLoop]: Abstraction has 5265 states and 24879 transitions. [2021-05-22 02:04:14,834 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:14,834 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 24879 transitions. [2021-05-22 02:04:14,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:14,842 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:14,842 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:14,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable823 [2021-05-22 02:04:14,842 INFO L430 AbstractCegarLoop]: === Iteration 825 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:14,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:14,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1773682725, now seen corresponding path program 820 times [2021-05-22 02:04:14,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:14,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943988874] [2021-05-22 02:04:14,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:14,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:14,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:14,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943988874] [2021-05-22 02:04:14,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943988874] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:14,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:14,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:14,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118211000] [2021-05-22 02:04:14,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:14,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:14,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:14,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:14,963 INFO L87 Difference]: Start difference. First operand 5265 states and 24879 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:15,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:15,059 INFO L93 Difference]: Finished difference Result 11649 states and 51787 transitions. [2021-05-22 02:04:15,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:15,059 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:15,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:15,087 INFO L225 Difference]: With dead ends: 11649 [2021-05-22 02:04:15,088 INFO L226 Difference]: Without dead ends: 11154 [2021-05-22 02:04:15,088 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:15,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11154 states. [2021-05-22 02:04:15,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11154 to 5185. [2021-05-22 02:04:15,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.7359182098765435) internal successors, (24551), 5184 states have internal predecessors, (24551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:15,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24551 transitions. [2021-05-22 02:04:15,396 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24551 transitions. Word has length 29 [2021-05-22 02:04:15,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:15,396 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24551 transitions. [2021-05-22 02:04:15,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:15,396 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24551 transitions. [2021-05-22 02:04:15,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:15,405 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:15,405 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:15,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable824 [2021-05-22 02:04:15,405 INFO L430 AbstractCegarLoop]: === Iteration 826 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:15,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:15,405 INFO L82 PathProgramCache]: Analyzing trace with hash -445033337, now seen corresponding path program 821 times [2021-05-22 02:04:15,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:15,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519067549] [2021-05-22 02:04:15,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:15,522 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:15,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519067549] [2021-05-22 02:04:15,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519067549] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:15,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:15,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:15,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533128532] [2021-05-22 02:04:15,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:15,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:15,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:15,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:15,523 INFO L87 Difference]: Start difference. First operand 5185 states and 24551 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:15,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:15,633 INFO L93 Difference]: Finished difference Result 11614 states and 51694 transitions. [2021-05-22 02:04:15,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:15,633 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:15,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:15,661 INFO L225 Difference]: With dead ends: 11614 [2021-05-22 02:04:15,661 INFO L226 Difference]: Without dead ends: 11137 [2021-05-22 02:04:15,661 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:15,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11137 states. [2021-05-22 02:04:15,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11137 to 5233. [2021-05-22 02:04:15,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 4.726108562691132) internal successors, (24727), 5232 states have internal predecessors, (24727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:15,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 24727 transitions. [2021-05-22 02:04:15,902 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 24727 transitions. Word has length 29 [2021-05-22 02:04:15,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:15,902 INFO L482 AbstractCegarLoop]: Abstraction has 5233 states and 24727 transitions. [2021-05-22 02:04:15,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:15,902 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 24727 transitions. [2021-05-22 02:04:15,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:15,910 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:15,910 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:15,910 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable825 [2021-05-22 02:04:15,911 INFO L430 AbstractCegarLoop]: === Iteration 827 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:15,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:15,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1291830299, now seen corresponding path program 822 times [2021-05-22 02:04:15,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:15,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119006250] [2021-05-22 02:04:15,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:16,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:16,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119006250] [2021-05-22 02:04:16,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119006250] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:16,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:16,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:16,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773369551] [2021-05-22 02:04:16,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:16,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:16,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:16,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:16,030 INFO L87 Difference]: Start difference. First operand 5233 states and 24727 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:16,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:16,126 INFO L93 Difference]: Finished difference Result 11552 states and 51377 transitions. [2021-05-22 02:04:16,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:16,127 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:16,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:16,155 INFO L225 Difference]: With dead ends: 11552 [2021-05-22 02:04:16,155 INFO L226 Difference]: Without dead ends: 11033 [2021-05-22 02:04:16,155 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:16,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11033 states. [2021-05-22 02:04:16,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11033 to 5129. [2021-05-22 02:04:16,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.748634945397816) internal successors, (24351), 5128 states have internal predecessors, (24351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:16,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24351 transitions. [2021-05-22 02:04:16,399 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24351 transitions. Word has length 29 [2021-05-22 02:04:16,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:16,399 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24351 transitions. [2021-05-22 02:04:16,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:16,399 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24351 transitions. [2021-05-22 02:04:16,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:16,408 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:16,408 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:16,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable826 [2021-05-22 02:04:16,408 INFO L430 AbstractCegarLoop]: === Iteration 828 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:16,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:16,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1357465509, now seen corresponding path program 823 times [2021-05-22 02:04:16,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:16,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199465299] [2021-05-22 02:04:16,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:16,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:16,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:16,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199465299] [2021-05-22 02:04:16,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199465299] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:16,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:16,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:16,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143185515] [2021-05-22 02:04:16,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:16,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:16,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:16,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:16,515 INFO L87 Difference]: Start difference. First operand 5129 states and 24351 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:16,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:16,614 INFO L93 Difference]: Finished difference Result 12052 states and 53640 transitions. [2021-05-22 02:04:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:16,614 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:16,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:16,643 INFO L225 Difference]: With dead ends: 12052 [2021-05-22 02:04:16,643 INFO L226 Difference]: Without dead ends: 11510 [2021-05-22 02:04:16,644 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 111.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:16,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11510 states. [2021-05-22 02:04:16,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11510 to 5359. [2021-05-22 02:04:16,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5359 states, 5358 states have (on average 4.715752146323255) internal successors, (25267), 5358 states have internal predecessors, (25267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5359 states to 5359 states and 25267 transitions. [2021-05-22 02:04:16,893 INFO L78 Accepts]: Start accepts. Automaton has 5359 states and 25267 transitions. Word has length 29 [2021-05-22 02:04:16,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:16,894 INFO L482 AbstractCegarLoop]: Abstraction has 5359 states and 25267 transitions. [2021-05-22 02:04:16,894 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:16,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5359 states and 25267 transitions. [2021-05-22 02:04:16,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:16,903 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:16,903 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:16,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable827 [2021-05-22 02:04:16,903 INFO L430 AbstractCegarLoop]: === Iteration 829 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:16,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:16,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1856439161, now seen corresponding path program 824 times [2021-05-22 02:04:16,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:16,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197211728] [2021-05-22 02:04:16,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:17,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:17,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:17,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197211728] [2021-05-22 02:04:17,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197211728] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:17,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:17,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:17,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655639889] [2021-05-22 02:04:17,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:17,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:17,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:17,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:17,009 INFO L87 Difference]: Start difference. First operand 5359 states and 25267 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:17,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:17,121 INFO L93 Difference]: Finished difference Result 11987 states and 53271 transitions. [2021-05-22 02:04:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:17,121 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:17,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:17,150 INFO L225 Difference]: With dead ends: 11987 [2021-05-22 02:04:17,150 INFO L226 Difference]: Without dead ends: 11367 [2021-05-22 02:04:17,150 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:17,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11367 states. [2021-05-22 02:04:17,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11367 to 5216. [2021-05-22 02:04:17,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5216 states, 5215 states have (on average 4.731927133269415) internal successors, (24677), 5215 states have internal predecessors, (24677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:17,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5216 states to 5216 states and 24677 transitions. [2021-05-22 02:04:17,396 INFO L78 Accepts]: Start accepts. Automaton has 5216 states and 24677 transitions. Word has length 29 [2021-05-22 02:04:17,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:17,396 INFO L482 AbstractCegarLoop]: Abstraction has 5216 states and 24677 transitions. [2021-05-22 02:04:17,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:17,396 INFO L276 IsEmpty]: Start isEmpty. Operand 5216 states and 24677 transitions. [2021-05-22 02:04:17,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:17,405 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:17,405 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:17,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable828 [2021-05-22 02:04:17,405 INFO L430 AbstractCegarLoop]: === Iteration 830 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:17,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:17,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1844531291, now seen corresponding path program 825 times [2021-05-22 02:04:17,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:17,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578787746] [2021-05-22 02:04:17,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:17,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:17,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578787746] [2021-05-22 02:04:17,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578787746] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:17,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:17,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:17,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376386152] [2021-05-22 02:04:17,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:17,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:17,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:17,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:17,513 INFO L87 Difference]: Start difference. First operand 5216 states and 24677 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:17,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:17,612 INFO L93 Difference]: Finished difference Result 12017 states and 53449 transitions. [2021-05-22 02:04:17,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:17,612 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:17,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:17,641 INFO L225 Difference]: With dead ends: 12017 [2021-05-22 02:04:17,641 INFO L226 Difference]: Without dead ends: 11475 [2021-05-22 02:04:17,641 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:17,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11475 states. [2021-05-22 02:04:17,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11475 to 5326. [2021-05-22 02:04:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5326 states, 5325 states have (on average 4.710234741784038) internal successors, (25082), 5325 states have internal predecessors, (25082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:17,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5326 states to 5326 states and 25082 transitions. [2021-05-22 02:04:17,890 INFO L78 Accepts]: Start accepts. Automaton has 5326 states and 25082 transitions. Word has length 29 [2021-05-22 02:04:17,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:17,890 INFO L482 AbstractCegarLoop]: Abstraction has 5326 states and 25082 transitions. [2021-05-22 02:04:17,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:17,890 INFO L276 IsEmpty]: Start isEmpty. Operand 5326 states and 25082 transitions. [2021-05-22 02:04:17,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:17,899 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:17,899 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:17,899 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable829 [2021-05-22 02:04:17,899 INFO L430 AbstractCegarLoop]: === Iteration 831 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:17,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:17,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1794963547, now seen corresponding path program 826 times [2021-05-22 02:04:17,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:17,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920758306] [2021-05-22 02:04:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:18,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:18,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920758306] [2021-05-22 02:04:18,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920758306] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:18,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:18,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:18,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289235446] [2021-05-22 02:04:18,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:18,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:18,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:18,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:18,004 INFO L87 Difference]: Start difference. First operand 5326 states and 25082 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:18,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:18,116 INFO L93 Difference]: Finished difference Result 11950 states and 53076 transitions. [2021-05-22 02:04:18,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:18,116 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:18,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:18,144 INFO L225 Difference]: With dead ends: 11950 [2021-05-22 02:04:18,144 INFO L226 Difference]: Without dead ends: 11365 [2021-05-22 02:04:18,144 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:18,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11365 states. [2021-05-22 02:04:18,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11365 to 5216. [2021-05-22 02:04:18,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5216 states, 5215 states have (on average 4.721380632790029) internal successors, (24622), 5215 states have internal predecessors, (24622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:18,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5216 states to 5216 states and 24622 transitions. [2021-05-22 02:04:18,393 INFO L78 Accepts]: Start accepts. Automaton has 5216 states and 24622 transitions. Word has length 29 [2021-05-22 02:04:18,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:18,393 INFO L482 AbstractCegarLoop]: Abstraction has 5216 states and 24622 transitions. [2021-05-22 02:04:18,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:18,393 INFO L276 IsEmpty]: Start isEmpty. Operand 5216 states and 24622 transitions. [2021-05-22 02:04:18,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:18,402 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:18,402 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:18,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable830 [2021-05-22 02:04:18,402 INFO L430 AbstractCegarLoop]: === Iteration 832 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:18,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:18,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1456526329, now seen corresponding path program 827 times [2021-05-22 02:04:18,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:18,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033899442] [2021-05-22 02:04:18,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:18,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:18,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033899442] [2021-05-22 02:04:18,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033899442] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:18,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:18,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:18,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024763958] [2021-05-22 02:04:18,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:18,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:18,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:18,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:18,508 INFO L87 Difference]: Start difference. First operand 5216 states and 24622 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:18,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:18,619 INFO L93 Difference]: Finished difference Result 11855 states and 52734 transitions. [2021-05-22 02:04:18,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:18,620 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:18,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:18,649 INFO L225 Difference]: With dead ends: 11855 [2021-05-22 02:04:18,649 INFO L226 Difference]: Without dead ends: 11378 [2021-05-22 02:04:18,649 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:18,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11378 states. [2021-05-22 02:04:18,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11378 to 5294. [2021-05-22 02:04:18,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5294 states, 5293 states have (on average 4.707160400529) internal successors, (24915), 5293 states have internal predecessors, (24915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:18,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 24915 transitions. [2021-05-22 02:04:18,893 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 24915 transitions. Word has length 29 [2021-05-22 02:04:18,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:18,893 INFO L482 AbstractCegarLoop]: Abstraction has 5294 states and 24915 transitions. [2021-05-22 02:04:18,893 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:18,893 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 24915 transitions. [2021-05-22 02:04:18,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:18,902 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:18,902 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:18,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable831 [2021-05-22 02:04:18,902 INFO L430 AbstractCegarLoop]: === Iteration 833 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:18,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:18,902 INFO L82 PathProgramCache]: Analyzing trace with hash 722361317, now seen corresponding path program 828 times [2021-05-22 02:04:18,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:18,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686946072] [2021-05-22 02:04:18,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:19,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:19,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686946072] [2021-05-22 02:04:19,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686946072] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:19,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:19,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:19,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47039742] [2021-05-22 02:04:19,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:19,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:19,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:19,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:19,007 INFO L87 Difference]: Start difference. First operand 5294 states and 24915 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:19,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:19,116 INFO L93 Difference]: Finished difference Result 11853 states and 52651 transitions. [2021-05-22 02:04:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:19,117 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:19,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:19,145 INFO L225 Difference]: With dead ends: 11853 [2021-05-22 02:04:19,146 INFO L226 Difference]: Without dead ends: 11213 [2021-05-22 02:04:19,146 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:19,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11213 states. [2021-05-22 02:04:19,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11213 to 5129. [2021-05-22 02:04:19,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.741614664586583) internal successors, (24315), 5128 states have internal predecessors, (24315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:19,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24315 transitions. [2021-05-22 02:04:19,387 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24315 transitions. Word has length 29 [2021-05-22 02:04:19,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:19,387 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24315 transitions. [2021-05-22 02:04:19,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:19,387 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24315 transitions. [2021-05-22 02:04:19,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:19,396 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:19,396 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:19,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable832 [2021-05-22 02:04:19,396 INFO L430 AbstractCegarLoop]: === Iteration 834 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:19,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:19,396 INFO L82 PathProgramCache]: Analyzing trace with hash 568079239, now seen corresponding path program 829 times [2021-05-22 02:04:19,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:19,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778815698] [2021-05-22 02:04:19,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:19,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:19,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:19,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778815698] [2021-05-22 02:04:19,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778815698] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:19,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:19,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:19,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585339712] [2021-05-22 02:04:19,516 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:19,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:19,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:19,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:19,516 INFO L87 Difference]: Start difference. First operand 5129 states and 24315 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:19,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:19,621 INFO L93 Difference]: Finished difference Result 11725 states and 52202 transitions. [2021-05-22 02:04:19,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:19,621 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:19,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:19,649 INFO L225 Difference]: With dead ends: 11725 [2021-05-22 02:04:19,649 INFO L226 Difference]: Without dead ends: 11183 [2021-05-22 02:04:19,649 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:19,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11183 states. [2021-05-22 02:04:19,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11183 to 5249. [2021-05-22 02:04:19,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5249 states, 5248 states have (on average 4.726943597560975) internal successors, (24807), 5248 states have internal predecessors, (24807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:19,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 24807 transitions. [2021-05-22 02:04:19,887 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 24807 transitions. Word has length 29 [2021-05-22 02:04:19,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:19,887 INFO L482 AbstractCegarLoop]: Abstraction has 5249 states and 24807 transitions. [2021-05-22 02:04:19,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:19,887 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 24807 transitions. [2021-05-22 02:04:19,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:19,895 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:19,895 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:19,895 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable833 [2021-05-22 02:04:19,895 INFO L430 AbstractCegarLoop]: === Iteration 835 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:19,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:19,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1120167033, now seen corresponding path program 830 times [2021-05-22 02:04:19,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:19,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054445881] [2021-05-22 02:04:19,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:20,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:20,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054445881] [2021-05-22 02:04:20,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054445881] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:20,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:20,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:20,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013731245] [2021-05-22 02:04:20,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:20,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:20,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:20,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:20,015 INFO L87 Difference]: Start difference. First operand 5249 states and 24807 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:20,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:20,111 INFO L93 Difference]: Finished difference Result 11598 states and 51595 transitions. [2021-05-22 02:04:20,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:20,112 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:20,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:20,141 INFO L225 Difference]: With dead ends: 11598 [2021-05-22 02:04:20,141 INFO L226 Difference]: Without dead ends: 11103 [2021-05-22 02:04:20,141 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:20,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11103 states. [2021-05-22 02:04:20,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11103 to 5169. [2021-05-22 02:04:20,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.736648606811145) internal successors, (24479), 5168 states have internal predecessors, (24479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:20,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24479 transitions. [2021-05-22 02:04:20,387 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24479 transitions. Word has length 29 [2021-05-22 02:04:20,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:20,387 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24479 transitions. [2021-05-22 02:04:20,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:20,387 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24479 transitions. [2021-05-22 02:04:20,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:20,396 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:20,396 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:20,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable834 [2021-05-22 02:04:20,396 INFO L430 AbstractCegarLoop]: === Iteration 836 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:20,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:20,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1454982299, now seen corresponding path program 831 times [2021-05-22 02:04:20,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:20,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026854298] [2021-05-22 02:04:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:20,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:20,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:20,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026854298] [2021-05-22 02:04:20,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026854298] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:20,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:20,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:20,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732858116] [2021-05-22 02:04:20,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:20,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:20,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:20,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:20,510 INFO L87 Difference]: Start difference. First operand 5169 states and 24479 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:20,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:20,604 INFO L93 Difference]: Finished difference Result 11815 states and 52573 transitions. [2021-05-22 02:04:20,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:20,605 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:20,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:20,635 INFO L225 Difference]: With dead ends: 11815 [2021-05-22 02:04:20,635 INFO L226 Difference]: Without dead ends: 11273 [2021-05-22 02:04:20,635 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:20,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11273 states. [2021-05-22 02:04:20,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11273 to 5279. [2021-05-22 02:04:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5279 states, 5278 states have (on average 4.714664645699129) internal successors, (24884), 5278 states have internal predecessors, (24884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:20,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5279 states to 5279 states and 24884 transitions. [2021-05-22 02:04:20,890 INFO L78 Accepts]: Start accepts. Automaton has 5279 states and 24884 transitions. Word has length 29 [2021-05-22 02:04:20,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:20,890 INFO L482 AbstractCegarLoop]: Abstraction has 5279 states and 24884 transitions. [2021-05-22 02:04:20,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:20,890 INFO L276 IsEmpty]: Start isEmpty. Operand 5279 states and 24884 transitions. [2021-05-22 02:04:20,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:20,899 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:20,900 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:20,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable835 [2021-05-22 02:04:20,900 INFO L430 AbstractCegarLoop]: === Iteration 837 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:20,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:20,900 INFO L82 PathProgramCache]: Analyzing trace with hash -85361785, now seen corresponding path program 832 times [2021-05-22 02:04:20,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:20,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500251478] [2021-05-22 02:04:20,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:21,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:21,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:21,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500251478] [2021-05-22 02:04:21,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500251478] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:21,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:21,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:21,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253531460] [2021-05-22 02:04:21,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:21,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:21,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:21,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:21,013 INFO L87 Difference]: Start difference. First operand 5279 states and 24884 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:21,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:21,128 INFO L93 Difference]: Finished difference Result 11748 states and 52200 transitions. [2021-05-22 02:04:21,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:21,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:21,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:21,158 INFO L225 Difference]: With dead ends: 11748 [2021-05-22 02:04:21,158 INFO L226 Difference]: Without dead ends: 11163 [2021-05-22 02:04:21,159 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:21,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11163 states. [2021-05-22 02:04:21,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11163 to 5169. [2021-05-22 02:04:21,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.72890866873065) internal successors, (24439), 5168 states have internal predecessors, (24439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:21,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24439 transitions. [2021-05-22 02:04:21,406 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24439 transitions. Word has length 29 [2021-05-22 02:04:21,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:21,406 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24439 transitions. [2021-05-22 02:04:21,406 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:21,406 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24439 transitions. [2021-05-22 02:04:21,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:21,415 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:21,415 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:21,415 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable836 [2021-05-22 02:04:21,415 INFO L430 AbstractCegarLoop]: === Iteration 838 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:21,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:21,415 INFO L82 PathProgramCache]: Analyzing trace with hash -730205305, now seen corresponding path program 833 times [2021-05-22 02:04:21,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:21,415 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378245790] [2021-05-22 02:04:21,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:21,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:21,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:21,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378245790] [2021-05-22 02:04:21,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378245790] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:21,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:21,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:21,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545250537] [2021-05-22 02:04:21,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:21,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:21,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:21,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:21,537 INFO L87 Difference]: Start difference. First operand 5169 states and 24439 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:21,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:21,630 INFO L93 Difference]: Finished difference Result 11499 states and 51188 transitions. [2021-05-22 02:04:21,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:21,631 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:21,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:21,660 INFO L225 Difference]: With dead ends: 11499 [2021-05-22 02:04:21,660 INFO L226 Difference]: Without dead ends: 11084 [2021-05-22 02:04:21,661 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:21,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11084 states. [2021-05-22 02:04:21,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11084 to 5217. [2021-05-22 02:04:21,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 4.7191334355828225) internal successors, (24615), 5216 states have internal predecessors, (24615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:21,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 24615 transitions. [2021-05-22 02:04:21,909 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 24615 transitions. Word has length 29 [2021-05-22 02:04:21,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:21,909 INFO L482 AbstractCegarLoop]: Abstraction has 5217 states and 24615 transitions. [2021-05-22 02:04:21,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:21,909 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 24615 transitions. [2021-05-22 02:04:21,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:21,918 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:21,918 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:21,918 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable837 [2021-05-22 02:04:21,918 INFO L430 AbstractCegarLoop]: === Iteration 839 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:21,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:21,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1577002267, now seen corresponding path program 834 times [2021-05-22 02:04:21,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:21,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254385536] [2021-05-22 02:04:21,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:22,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:22,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254385536] [2021-05-22 02:04:22,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254385536] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:22,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:22,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:22,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158134525] [2021-05-22 02:04:22,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:22,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:22,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:22,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:22,042 INFO L87 Difference]: Start difference. First operand 5217 states and 24615 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:22,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:22,171 INFO L93 Difference]: Finished difference Result 11559 states and 51404 transitions. [2021-05-22 02:04:22,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:22,171 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:22,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:22,199 INFO L225 Difference]: With dead ends: 11559 [2021-05-22 02:04:22,199 INFO L226 Difference]: Without dead ends: 10996 [2021-05-22 02:04:22,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:22,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10996 states. [2021-05-22 02:04:22,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10996 to 5129. [2021-05-22 02:04:22,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.737714508580344) internal successors, (24295), 5128 states have internal predecessors, (24295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:22,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24295 transitions. [2021-05-22 02:04:22,447 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24295 transitions. Word has length 29 [2021-05-22 02:04:22,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:22,447 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24295 transitions. [2021-05-22 02:04:22,447 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:22,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24295 transitions. [2021-05-22 02:04:22,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:22,456 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:22,456 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:22,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable838 [2021-05-22 02:04:22,456 INFO L430 AbstractCegarLoop]: === Iteration 840 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:22,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:22,456 INFO L82 PathProgramCache]: Analyzing trace with hash 647599977, now seen corresponding path program 835 times [2021-05-22 02:04:22,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:22,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553934631] [2021-05-22 02:04:22,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:22,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:22,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:22,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553934631] [2021-05-22 02:04:22,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553934631] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:22,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:22,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:22,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413496093] [2021-05-22 02:04:22,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:22,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:22,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:22,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:22,578 INFO L87 Difference]: Start difference. First operand 5129 states and 24295 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:22,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:22,704 INFO L93 Difference]: Finished difference Result 11418 states and 50896 transitions. [2021-05-22 02:04:22,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:22,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:22,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:22,734 INFO L225 Difference]: With dead ends: 11418 [2021-05-22 02:04:22,734 INFO L226 Difference]: Without dead ends: 10941 [2021-05-22 02:04:22,735 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:22,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10941 states. [2021-05-22 02:04:22,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10941 to 5201. [2021-05-22 02:04:22,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 4.729807692307692) internal successors, (24595), 5200 states have internal predecessors, (24595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 24595 transitions. [2021-05-22 02:04:22,985 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 24595 transitions. Word has length 29 [2021-05-22 02:04:22,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:22,985 INFO L482 AbstractCegarLoop]: Abstraction has 5201 states and 24595 transitions. [2021-05-22 02:04:22,985 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:22,986 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 24595 transitions. [2021-05-22 02:04:22,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:22,995 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:22,995 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:22,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable839 [2021-05-22 02:04:22,995 INFO L430 AbstractCegarLoop]: === Iteration 841 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:22,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:22,995 INFO L82 PathProgramCache]: Analyzing trace with hash -199196985, now seen corresponding path program 836 times [2021-05-22 02:04:22,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:22,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076060237] [2021-05-22 02:04:22,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:23,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:23,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:23,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076060237] [2021-05-22 02:04:23,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076060237] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:23,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:23,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:23,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454669003] [2021-05-22 02:04:23,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:23,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:23,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:23,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:23,120 INFO L87 Difference]: Start difference. First operand 5201 states and 24595 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:23,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:23,235 INFO L93 Difference]: Finished difference Result 11356 states and 50579 transitions. [2021-05-22 02:04:23,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:23,235 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:23,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:23,264 INFO L225 Difference]: With dead ends: 11356 [2021-05-22 02:04:23,264 INFO L226 Difference]: Without dead ends: 10893 [2021-05-22 02:04:23,264 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:23,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10893 states. [2021-05-22 02:04:23,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10893 to 5153. [2021-05-22 02:04:23,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.735054347826087) internal successors, (24395), 5152 states have internal predecessors, (24395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:23,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24395 transitions. [2021-05-22 02:04:23,509 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24395 transitions. Word has length 29 [2021-05-22 02:04:23,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:23,509 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24395 transitions. [2021-05-22 02:04:23,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:23,509 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24395 transitions. [2021-05-22 02:04:23,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:23,518 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:23,518 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:23,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable840 [2021-05-22 02:04:23,518 INFO L430 AbstractCegarLoop]: === Iteration 842 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:23,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:23,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1375461561, now seen corresponding path program 837 times [2021-05-22 02:04:23,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:23,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433012067] [2021-05-22 02:04:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:23,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:23,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433012067] [2021-05-22 02:04:23,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433012067] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:23,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:23,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:23,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260676349] [2021-05-22 02:04:23,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:23,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:23,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:23,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:23,632 INFO L87 Difference]: Start difference. First operand 5153 states and 24395 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:23,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:23,742 INFO L93 Difference]: Finished difference Result 11508 states and 51283 transitions. [2021-05-22 02:04:23,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:23,742 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:23,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:23,772 INFO L225 Difference]: With dead ends: 11508 [2021-05-22 02:04:23,772 INFO L226 Difference]: Without dead ends: 11031 [2021-05-22 02:04:23,772 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:23,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11031 states. [2021-05-22 02:04:23,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11031 to 5231. [2021-05-22 02:04:24,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5231 states, 5230 states have (on average 4.720458891013385) internal successors, (24688), 5230 states have internal predecessors, (24688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:24,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5231 states to 5231 states and 24688 transitions. [2021-05-22 02:04:24,020 INFO L78 Accepts]: Start accepts. Automaton has 5231 states and 24688 transitions. Word has length 29 [2021-05-22 02:04:24,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:24,020 INFO L482 AbstractCegarLoop]: Abstraction has 5231 states and 24688 transitions. [2021-05-22 02:04:24,020 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:24,020 INFO L276 IsEmpty]: Start isEmpty. Operand 5231 states and 24688 transitions. [2021-05-22 02:04:24,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:24,029 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:24,029 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:24,029 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable841 [2021-05-22 02:04:24,029 INFO L430 AbstractCegarLoop]: === Iteration 843 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:24,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:24,030 INFO L82 PathProgramCache]: Analyzing trace with hash 2123478855, now seen corresponding path program 838 times [2021-05-22 02:04:24,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:24,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068298004] [2021-05-22 02:04:24,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:24,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:24,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068298004] [2021-05-22 02:04:24,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068298004] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:24,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:24,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:24,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498921934] [2021-05-22 02:04:24,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:24,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:24,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:24,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:24,144 INFO L87 Difference]: Start difference. First operand 5231 states and 24688 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:24,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:24,254 INFO L93 Difference]: Finished difference Result 11506 states and 51200 transitions. [2021-05-22 02:04:24,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:24,254 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:24,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:24,283 INFO L225 Difference]: With dead ends: 11506 [2021-05-22 02:04:24,283 INFO L226 Difference]: Without dead ends: 10953 [2021-05-22 02:04:24,283 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:24,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10953 states. [2021-05-22 02:04:24,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10953 to 5153. [2021-05-22 02:04:24,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.730395962732919) internal successors, (24371), 5152 states have internal predecessors, (24371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:24,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24371 transitions. [2021-05-22 02:04:24,536 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24371 transitions. Word has length 29 [2021-05-22 02:04:24,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:24,536 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24371 transitions. [2021-05-22 02:04:24,536 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:24,536 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24371 transitions. [2021-05-22 02:04:24,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:24,546 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:24,546 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:24,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable842 [2021-05-22 02:04:24,546 INFO L430 AbstractCegarLoop]: === Iteration 844 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:24,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:24,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2062757669, now seen corresponding path program 839 times [2021-05-22 02:04:24,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:24,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668457088] [2021-05-22 02:04:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:24,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:24,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668457088] [2021-05-22 02:04:24,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668457088] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:24,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:24,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:24,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399476855] [2021-05-22 02:04:24,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:24,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:24,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:24,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:24,670 INFO L87 Difference]: Start difference. First operand 5153 states and 24371 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:24,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:24,763 INFO L93 Difference]: Finished difference Result 11354 states and 50574 transitions. [2021-05-22 02:04:24,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:24,764 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:24,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:24,793 INFO L225 Difference]: With dead ends: 11354 [2021-05-22 02:04:24,793 INFO L226 Difference]: Without dead ends: 10939 [2021-05-22 02:04:24,793 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:24,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10939 states. [2021-05-22 02:04:25,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10939 to 5201. [2021-05-22 02:04:25,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 4.720576923076923) internal successors, (24547), 5200 states have internal predecessors, (24547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:25,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 24547 transitions. [2021-05-22 02:04:25,041 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 24547 transitions. Word has length 29 [2021-05-22 02:04:25,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:25,041 INFO L482 AbstractCegarLoop]: Abstraction has 5201 states and 24547 transitions. [2021-05-22 02:04:25,041 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:25,041 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 24547 transitions. [2021-05-22 02:04:25,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:25,050 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:25,050 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:25,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable843 [2021-05-22 02:04:25,050 INFO L430 AbstractCegarLoop]: === Iteration 845 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:25,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:25,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1581855623, now seen corresponding path program 840 times [2021-05-22 02:04:25,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:25,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037574757] [2021-05-22 02:04:25,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:25,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:25,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037574757] [2021-05-22 02:04:25,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037574757] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:25,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:25,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:25,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190786098] [2021-05-22 02:04:25,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:25,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:25,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:25,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:25,173 INFO L87 Difference]: Start difference. First operand 5201 states and 24547 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:25,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:25,293 INFO L93 Difference]: Finished difference Result 11414 states and 50790 transitions. [2021-05-22 02:04:25,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:25,293 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:25,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:25,322 INFO L225 Difference]: With dead ends: 11414 [2021-05-22 02:04:25,322 INFO L226 Difference]: Without dead ends: 10815 [2021-05-22 02:04:25,322 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:25,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10815 states. [2021-05-22 02:04:25,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10815 to 5077. [2021-05-22 02:04:25,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5077 states, 5076 states have (on average 4.757880220646178) internal successors, (24151), 5076 states have internal predecessors, (24151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:25,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5077 states to 5077 states and 24151 transitions. [2021-05-22 02:04:25,566 INFO L78 Accepts]: Start accepts. Automaton has 5077 states and 24151 transitions. Word has length 29 [2021-05-22 02:04:25,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:25,615 INFO L482 AbstractCegarLoop]: Abstraction has 5077 states and 24151 transitions. [2021-05-22 02:04:25,615 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:25,615 INFO L276 IsEmpty]: Start isEmpty. Operand 5077 states and 24151 transitions. [2021-05-22 02:04:25,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:25,625 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:25,625 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:25,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable844 [2021-05-22 02:04:25,625 INFO L430 AbstractCegarLoop]: === Iteration 846 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:25,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:25,625 INFO L82 PathProgramCache]: Analyzing trace with hash -377300951, now seen corresponding path program 841 times [2021-05-22 02:04:25,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:25,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213019107] [2021-05-22 02:04:25,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:25,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:25,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:25,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213019107] [2021-05-22 02:04:25,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213019107] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:25,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:25,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:25,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892705993] [2021-05-22 02:04:25,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:25,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:25,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:25,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:25,742 INFO L87 Difference]: Start difference. First operand 5077 states and 24151 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:25,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:25,855 INFO L93 Difference]: Finished difference Result 11829 states and 52913 transitions. [2021-05-22 02:04:25,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:25,856 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:25,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:25,885 INFO L225 Difference]: With dead ends: 11829 [2021-05-22 02:04:25,886 INFO L226 Difference]: Without dead ends: 11414 [2021-05-22 02:04:25,886 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:26,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11414 states. [2021-05-22 02:04:26,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11414 to 5267. [2021-05-22 02:04:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5267 states, 5266 states have (on average 4.749715153816939) internal successors, (25012), 5266 states have internal predecessors, (25012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:26,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5267 states to 5267 states and 25012 transitions. [2021-05-22 02:04:26,138 INFO L78 Accepts]: Start accepts. Automaton has 5267 states and 25012 transitions. Word has length 29 [2021-05-22 02:04:26,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:26,138 INFO L482 AbstractCegarLoop]: Abstraction has 5267 states and 25012 transitions. [2021-05-22 02:04:26,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:26,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5267 states and 25012 transitions. [2021-05-22 02:04:26,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:26,147 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:26,147 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:26,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable845 [2021-05-22 02:04:26,147 INFO L430 AbstractCegarLoop]: === Iteration 847 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:26,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:26,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1377519657, now seen corresponding path program 842 times [2021-05-22 02:04:26,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:26,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363254314] [2021-05-22 02:04:26,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:26,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:26,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363254314] [2021-05-22 02:04:26,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363254314] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:26,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:26,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:26,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078097575] [2021-05-22 02:04:26,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:26,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:26,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:26,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:26,266 INFO L87 Difference]: Start difference. First operand 5267 states and 25012 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:26,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:26,368 INFO L93 Difference]: Finished difference Result 11956 states and 53392 transitions. [2021-05-22 02:04:26,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:26,368 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:26,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:26,398 INFO L225 Difference]: With dead ends: 11956 [2021-05-22 02:04:26,398 INFO L226 Difference]: Without dead ends: 11334 [2021-05-22 02:04:26,398 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:26,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11334 states. [2021-05-22 02:04:26,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11334 to 5187. [2021-05-22 02:04:26,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.753567296567682) internal successors, (24652), 5186 states have internal predecessors, (24652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:26,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24652 transitions. [2021-05-22 02:04:26,652 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24652 transitions. Word has length 29 [2021-05-22 02:04:26,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:26,652 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24652 transitions. [2021-05-22 02:04:26,653 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:26,653 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24652 transitions. [2021-05-22 02:04:26,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:26,662 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:26,662 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:26,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable846 [2021-05-22 02:04:26,662 INFO L430 AbstractCegarLoop]: === Iteration 848 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:26,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:26,662 INFO L82 PathProgramCache]: Analyzing trace with hash -597102807, now seen corresponding path program 843 times [2021-05-22 02:04:26,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:26,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395266145] [2021-05-22 02:04:26,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:26,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:26,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:26,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395266145] [2021-05-22 02:04:26,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395266145] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:26,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:26,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:26,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628232747] [2021-05-22 02:04:26,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:26,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:26,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:26,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:26,780 INFO L87 Difference]: Start difference. First operand 5187 states and 24652 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:26,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:26,892 INFO L93 Difference]: Finished difference Result 11732 states and 52471 transitions. [2021-05-22 02:04:26,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:26,892 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:26,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:26,922 INFO L225 Difference]: With dead ends: 11732 [2021-05-22 02:04:26,923 INFO L226 Difference]: Without dead ends: 11317 [2021-05-22 02:04:26,923 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:27,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11317 states. [2021-05-22 02:04:27,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11317 to 5235. [2021-05-22 02:04:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5235 states, 5234 states have (on average 4.7435995414596865) internal successors, (24828), 5234 states have internal predecessors, (24828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:27,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5235 states to 5235 states and 24828 transitions. [2021-05-22 02:04:27,175 INFO L78 Accepts]: Start accepts. Automaton has 5235 states and 24828 transitions. Word has length 29 [2021-05-22 02:04:27,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:27,175 INFO L482 AbstractCegarLoop]: Abstraction has 5235 states and 24828 transitions. [2021-05-22 02:04:27,175 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:27,175 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 24828 transitions. [2021-05-22 02:04:27,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:27,184 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:27,184 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:27,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable847 [2021-05-22 02:04:27,184 INFO L430 AbstractCegarLoop]: === Iteration 849 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:27,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:27,185 INFO L82 PathProgramCache]: Analyzing trace with hash 119560139, now seen corresponding path program 844 times [2021-05-22 02:04:27,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:27,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477922950] [2021-05-22 02:04:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:27,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:27,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:27,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477922950] [2021-05-22 02:04:27,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477922950] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:27,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:27,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:27,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872177158] [2021-05-22 02:04:27,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:27,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:27,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:27,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:27,303 INFO L87 Difference]: Start difference. First operand 5235 states and 24828 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:27,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:27,418 INFO L93 Difference]: Finished difference Result 11794 states and 52692 transitions. [2021-05-22 02:04:27,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:27,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:27,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:27,448 INFO L225 Difference]: With dead ends: 11794 [2021-05-22 02:04:27,448 INFO L226 Difference]: Without dead ends: 11269 [2021-05-22 02:04:27,448 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:27,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11269 states. [2021-05-22 02:04:27,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11269 to 5187. [2021-05-22 02:04:27,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.74893945237177) internal successors, (24628), 5186 states have internal predecessors, (24628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:27,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24628 transitions. [2021-05-22 02:04:27,699 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24628 transitions. Word has length 29 [2021-05-22 02:04:27,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:27,699 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24628 transitions. [2021-05-22 02:04:27,699 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:27,699 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24628 transitions. [2021-05-22 02:04:27,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:27,708 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:27,708 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:27,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable848 [2021-05-22 02:04:27,708 INFO L430 AbstractCegarLoop]: === Iteration 850 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:27,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:27,708 INFO L82 PathProgramCache]: Analyzing trace with hash -2092181557, now seen corresponding path program 845 times [2021-05-22 02:04:27,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:27,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978147304] [2021-05-22 02:04:27,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:27,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:27,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978147304] [2021-05-22 02:04:27,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978147304] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:27,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:27,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:27,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258862789] [2021-05-22 02:04:27,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:27,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:27,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:27,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:27,819 INFO L87 Difference]: Start difference. First operand 5187 states and 24628 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:27,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:27,924 INFO L93 Difference]: Finished difference Result 12081 states and 53907 transitions. [2021-05-22 02:04:27,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:27,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:27,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:27,955 INFO L225 Difference]: With dead ends: 12081 [2021-05-22 02:04:27,955 INFO L226 Difference]: Without dead ends: 11539 [2021-05-22 02:04:27,955 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:28,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11539 states. [2021-05-22 02:04:28,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11539 to 5330. [2021-05-22 02:04:28,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 5329 states have (on average 4.718896603490336) internal successors, (25147), 5329 states have internal predecessors, (25147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:28,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 25147 transitions. [2021-05-22 02:04:28,216 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 25147 transitions. Word has length 29 [2021-05-22 02:04:28,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:28,216 INFO L482 AbstractCegarLoop]: Abstraction has 5330 states and 25147 transitions. [2021-05-22 02:04:28,216 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:28,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 25147 transitions. [2021-05-22 02:04:28,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:28,226 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:28,226 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:28,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable849 [2021-05-22 02:04:28,226 INFO L430 AbstractCegarLoop]: === Iteration 851 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:28,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:28,226 INFO L82 PathProgramCache]: Analyzing trace with hash 159448745, now seen corresponding path program 846 times [2021-05-22 02:04:28,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:28,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788808763] [2021-05-22 02:04:28,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:28,337 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:28,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788808763] [2021-05-22 02:04:28,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788808763] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:28,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:28,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:28,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868346482] [2021-05-22 02:04:28,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:28,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:28,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:28,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:28,337 INFO L87 Difference]: Start difference. First operand 5330 states and 25147 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:28,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:28,464 INFO L93 Difference]: Finished difference Result 12016 states and 53538 transitions. [2021-05-22 02:04:28,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:28,464 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:28,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:28,493 INFO L225 Difference]: With dead ends: 12016 [2021-05-22 02:04:28,493 INFO L226 Difference]: Without dead ends: 11340 [2021-05-22 02:04:28,493 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:28,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11340 states. [2021-05-22 02:04:28,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11340 to 5131. [2021-05-22 02:04:28,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.7555555555555555) internal successors, (24396), 5130 states have internal predecessors, (24396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:28,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24396 transitions. [2021-05-22 02:04:28,742 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24396 transitions. Word has length 29 [2021-05-22 02:04:28,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:28,742 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24396 transitions. [2021-05-22 02:04:28,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:28,742 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24396 transitions. [2021-05-22 02:04:28,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:28,751 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:28,751 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:28,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable850 [2021-05-22 02:04:28,751 INFO L430 AbstractCegarLoop]: === Iteration 852 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:28,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:28,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1827572905, now seen corresponding path program 847 times [2021-05-22 02:04:28,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:28,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623120294] [2021-05-22 02:04:28,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:28,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:28,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623120294] [2021-05-22 02:04:28,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623120294] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:28,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:28,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:28,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976715625] [2021-05-22 02:04:28,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:28,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:28,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:28,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:28,871 INFO L87 Difference]: Start difference. First operand 5131 states and 24396 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:28,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:28,996 INFO L93 Difference]: Finished difference Result 11778 states and 52701 transitions. [2021-05-22 02:04:28,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:28,996 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:28,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:29,026 INFO L225 Difference]: With dead ends: 11778 [2021-05-22 02:04:29,026 INFO L226 Difference]: Without dead ends: 11363 [2021-05-22 02:04:29,026 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:29,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11363 states. [2021-05-22 02:04:29,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11363 to 5251. [2021-05-22 02:04:29,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 4.746666666666667) internal successors, (24920), 5250 states have internal predecessors, (24920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:29,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 24920 transitions. [2021-05-22 02:04:29,280 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 24920 transitions. Word has length 29 [2021-05-22 02:04:29,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:29,280 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 24920 transitions. [2021-05-22 02:04:29,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:29,280 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 24920 transitions. [2021-05-22 02:04:29,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:29,289 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:29,289 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:29,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable851 [2021-05-22 02:04:29,289 INFO L430 AbstractCegarLoop]: === Iteration 853 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:29,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:29,290 INFO L82 PathProgramCache]: Analyzing trace with hash -712573783, now seen corresponding path program 848 times [2021-05-22 02:04:29,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:29,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019061130] [2021-05-22 02:04:29,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:29,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:29,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:29,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019061130] [2021-05-22 02:04:29,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019061130] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:29,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:29,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:29,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984105690] [2021-05-22 02:04:29,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:29,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:29,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:29,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:29,414 INFO L87 Difference]: Start difference. First operand 5251 states and 24920 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:29,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:29,520 INFO L93 Difference]: Finished difference Result 11905 states and 53180 transitions. [2021-05-22 02:04:29,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:29,520 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:29,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:29,552 INFO L225 Difference]: With dead ends: 11905 [2021-05-22 02:04:29,552 INFO L226 Difference]: Without dead ends: 11283 [2021-05-22 02:04:29,553 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:29,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11283 states. [2021-05-22 02:04:29,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11283 to 5171. [2021-05-22 02:04:29,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.750483558994198) internal successors, (24560), 5170 states have internal predecessors, (24560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:29,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24560 transitions. [2021-05-22 02:04:29,804 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24560 transitions. Word has length 29 [2021-05-22 02:04:29,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:29,804 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24560 transitions. [2021-05-22 02:04:29,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:29,804 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24560 transitions. [2021-05-22 02:04:29,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:29,813 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:29,813 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:29,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable852 [2021-05-22 02:04:29,814 INFO L430 AbstractCegarLoop]: === Iteration 854 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:29,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:29,814 INFO L82 PathProgramCache]: Analyzing trace with hash -59930553, now seen corresponding path program 849 times [2021-05-22 02:04:29,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:29,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609915150] [2021-05-22 02:04:29,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:29,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:29,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:29,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609915150] [2021-05-22 02:04:29,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609915150] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:29,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:29,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:29,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909837864] [2021-05-22 02:04:29,937 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:29,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:29,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:29,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:29,937 INFO L87 Difference]: Start difference. First operand 5171 states and 24560 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:30,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:30,050 INFO L93 Difference]: Finished difference Result 11679 states and 52254 transitions. [2021-05-22 02:04:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:30,050 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:30,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:30,080 INFO L225 Difference]: With dead ends: 11679 [2021-05-22 02:04:30,080 INFO L226 Difference]: Without dead ends: 11264 [2021-05-22 02:04:30,080 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:30,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11264 states. [2021-05-22 02:04:30,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11264 to 5219. [2021-05-22 02:04:30,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5219 states, 5218 states have (on average 4.740513606745879) internal successors, (24736), 5218 states have internal predecessors, (24736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 24736 transitions. [2021-05-22 02:04:30,331 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 24736 transitions. Word has length 29 [2021-05-22 02:04:30,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:30,331 INFO L482 AbstractCegarLoop]: Abstraction has 5219 states and 24736 transitions. [2021-05-22 02:04:30,331 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:30,331 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 24736 transitions. [2021-05-22 02:04:30,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:30,340 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:30,340 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:30,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable853 [2021-05-22 02:04:30,340 INFO L430 AbstractCegarLoop]: === Iteration 855 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:30,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:30,340 INFO L82 PathProgramCache]: Analyzing trace with hash -574611479, now seen corresponding path program 850 times [2021-05-22 02:04:30,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:30,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402760006] [2021-05-22 02:04:30,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:30,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:30,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:30,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402760006] [2021-05-22 02:04:30,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402760006] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:30,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:30,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:30,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573572651] [2021-05-22 02:04:30,465 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:30,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:30,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:30,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:30,465 INFO L87 Difference]: Start difference. First operand 5219 states and 24736 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:30,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:30,580 INFO L93 Difference]: Finished difference Result 11739 states and 52470 transitions. [2021-05-22 02:04:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:30,580 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:30,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:30,610 INFO L225 Difference]: With dead ends: 11739 [2021-05-22 02:04:30,610 INFO L226 Difference]: Without dead ends: 11216 [2021-05-22 02:04:30,610 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:30,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11216 states. [2021-05-22 02:04:30,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11216 to 5171. [2021-05-22 02:04:30,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.745841392649903) internal successors, (24536), 5170 states have internal predecessors, (24536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:30,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24536 transitions. [2021-05-22 02:04:30,862 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24536 transitions. Word has length 29 [2021-05-22 02:04:30,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:30,862 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24536 transitions. [2021-05-22 02:04:30,862 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:30,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24536 transitions. [2021-05-22 02:04:30,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:30,872 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:30,872 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:30,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable854 [2021-05-22 02:04:30,872 INFO L430 AbstractCegarLoop]: === Iteration 856 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:30,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:30,872 INFO L82 PathProgramCache]: Analyzing trace with hash 164216809, now seen corresponding path program 851 times [2021-05-22 02:04:30,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:30,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870467894] [2021-05-22 02:04:30,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:30,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:30,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:30,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870467894] [2021-05-22 02:04:30,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870467894] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:30,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:30,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:30,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670195410] [2021-05-22 02:04:30,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:30,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:30,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:30,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:30,985 INFO L87 Difference]: Start difference. First operand 5171 states and 24536 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:31,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:31,083 INFO L93 Difference]: Finished difference Result 11995 states and 53575 transitions. [2021-05-22 02:04:31,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:31,083 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:31,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:31,113 INFO L225 Difference]: With dead ends: 11995 [2021-05-22 02:04:31,113 INFO L226 Difference]: Without dead ends: 11453 [2021-05-22 02:04:31,114 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:31,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11453 states. [2021-05-22 02:04:31,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11453 to 5281. [2021-05-22 02:04:31,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 5280 states have (on average 4.723674242424242) internal successors, (24941), 5280 states have internal predecessors, (24941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:31,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 24941 transitions. [2021-05-22 02:04:31,373 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 24941 transitions. Word has length 29 [2021-05-22 02:04:31,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:31,373 INFO L482 AbstractCegarLoop]: Abstraction has 5281 states and 24941 transitions. [2021-05-22 02:04:31,373 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:31,373 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 24941 transitions. [2021-05-22 02:04:31,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:31,382 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:31,383 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:31,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable855 [2021-05-22 02:04:31,383 INFO L430 AbstractCegarLoop]: === Iteration 857 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:31,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:31,383 INFO L82 PathProgramCache]: Analyzing trace with hash -576735289, now seen corresponding path program 852 times [2021-05-22 02:04:31,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:31,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914860944] [2021-05-22 02:04:31,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:31,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:31,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:31,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914860944] [2021-05-22 02:04:31,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914860944] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:31,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:31,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:31,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049620261] [2021-05-22 02:04:31,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:31,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:31,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:31,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:31,495 INFO L87 Difference]: Start difference. First operand 5281 states and 24941 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:31,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:31,609 INFO L93 Difference]: Finished difference Result 11928 states and 53202 transitions. [2021-05-22 02:04:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:31,609 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:31,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:31,640 INFO L225 Difference]: With dead ends: 11928 [2021-05-22 02:04:31,640 INFO L226 Difference]: Without dead ends: 11303 [2021-05-22 02:04:31,640 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:31,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11303 states. [2021-05-22 02:04:31,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11303 to 5131. [2021-05-22 02:04:31,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.751656920077973) internal successors, (24376), 5130 states have internal predecessors, (24376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:31,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24376 transitions. [2021-05-22 02:04:31,896 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24376 transitions. Word has length 29 [2021-05-22 02:04:31,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:31,896 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24376 transitions. [2021-05-22 02:04:31,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:31,896 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24376 transitions. [2021-05-22 02:04:31,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:31,906 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:31,906 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:31,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable856 [2021-05-22 02:04:31,906 INFO L430 AbstractCegarLoop]: === Iteration 858 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:31,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:31,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1206403257, now seen corresponding path program 853 times [2021-05-22 02:04:31,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:31,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497069668] [2021-05-22 02:04:31,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:32,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:32,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:32,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497069668] [2021-05-22 02:04:32,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497069668] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:32,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:32,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:32,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746390096] [2021-05-22 02:04:32,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:32,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:32,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:32,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:32,031 INFO L87 Difference]: Start difference. First operand 5131 states and 24376 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:32,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:32,147 INFO L93 Difference]: Finished difference Result 11536 states and 51653 transitions. [2021-05-22 02:04:32,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:32,147 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:32,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:32,180 INFO L225 Difference]: With dead ends: 11536 [2021-05-22 02:04:32,180 INFO L226 Difference]: Without dead ends: 11121 [2021-05-22 02:04:32,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:32,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11121 states. [2021-05-22 02:04:32,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11121 to 5203. [2021-05-22 02:04:32,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.743560169165706) internal successors, (24676), 5202 states have internal predecessors, (24676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:32,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24676 transitions. [2021-05-22 02:04:32,435 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24676 transitions. Word has length 29 [2021-05-22 02:04:32,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:32,436 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24676 transitions. [2021-05-22 02:04:32,436 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:32,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24676 transitions. [2021-05-22 02:04:32,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:32,445 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:32,445 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:32,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable857 [2021-05-22 02:04:32,445 INFO L430 AbstractCegarLoop]: === Iteration 859 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:32,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:32,445 INFO L82 PathProgramCache]: Analyzing trace with hash -489740311, now seen corresponding path program 854 times [2021-05-22 02:04:32,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:32,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214005041] [2021-05-22 02:04:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:32,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:32,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:32,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214005041] [2021-05-22 02:04:32,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214005041] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:32,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:32,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:32,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447230010] [2021-05-22 02:04:32,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:32,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:32,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:32,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:32,568 INFO L87 Difference]: Start difference. First operand 5203 states and 24676 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:32,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:32,691 INFO L93 Difference]: Finished difference Result 11598 states and 51874 transitions. [2021-05-22 02:04:32,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:32,691 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:32,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:32,721 INFO L225 Difference]: With dead ends: 11598 [2021-05-22 02:04:32,722 INFO L226 Difference]: Without dead ends: 11073 [2021-05-22 02:04:32,722 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:32,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11073 states. [2021-05-22 02:04:32,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11073 to 5155. [2021-05-22 02:04:32,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.748932867675592) internal successors, (24476), 5154 states have internal predecessors, (24476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:32,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24476 transitions. [2021-05-22 02:04:32,976 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24476 transitions. Word has length 29 [2021-05-22 02:04:32,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:32,976 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24476 transitions. [2021-05-22 02:04:32,976 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:32,976 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24476 transitions. [2021-05-22 02:04:32,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:32,985 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:32,985 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:32,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable858 [2021-05-22 02:04:32,986 INFO L430 AbstractCegarLoop]: === Iteration 860 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:32,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:32,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1914604329, now seen corresponding path program 855 times [2021-05-22 02:04:32,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:32,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034376899] [2021-05-22 02:04:32,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:33,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:33,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:33,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034376899] [2021-05-22 02:04:33,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034376899] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:33,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:33,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:33,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118468] [2021-05-22 02:04:33,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:33,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:33,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:33,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:33,111 INFO L87 Difference]: Start difference. First operand 5155 states and 24476 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:33,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:33,228 INFO L93 Difference]: Finished difference Result 11534 states and 51624 transitions. [2021-05-22 02:04:33,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:33,229 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:33,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:33,262 INFO L225 Difference]: With dead ends: 11534 [2021-05-22 02:04:33,263 INFO L226 Difference]: Without dead ends: 11119 [2021-05-22 02:04:33,263 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:33,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11119 states. [2021-05-22 02:04:33,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11119 to 5203. [2021-05-22 02:04:33,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.738946559015763) internal successors, (24652), 5202 states have internal predecessors, (24652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:33,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24652 transitions. [2021-05-22 02:04:33,523 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24652 transitions. Word has length 29 [2021-05-22 02:04:33,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:33,523 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24652 transitions. [2021-05-22 02:04:33,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:33,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24652 transitions. [2021-05-22 02:04:33,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:33,533 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:33,533 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:33,533 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable859 [2021-05-22 02:04:33,533 INFO L430 AbstractCegarLoop]: === Iteration 861 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:33,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:33,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1350797591, now seen corresponding path program 856 times [2021-05-22 02:04:33,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:33,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748402185] [2021-05-22 02:04:33,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:33,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:33,658 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:33,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748402185] [2021-05-22 02:04:33,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748402185] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:33,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:33,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:33,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891934121] [2021-05-22 02:04:33,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:33,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:33,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:33,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:33,659 INFO L87 Difference]: Start difference. First operand 5203 states and 24652 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:33,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:33,784 INFO L93 Difference]: Finished difference Result 11594 states and 51840 transitions. [2021-05-22 02:04:33,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:33,784 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:33,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:33,814 INFO L225 Difference]: With dead ends: 11594 [2021-05-22 02:04:33,814 INFO L226 Difference]: Without dead ends: 11071 [2021-05-22 02:04:33,814 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:33,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11071 states. [2021-05-22 02:04:34,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11071 to 5155. [2021-05-22 02:04:34,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.744276290259992) internal successors, (24452), 5154 states have internal predecessors, (24452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:34,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24452 transitions. [2021-05-22 02:04:34,071 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24452 transitions. Word has length 29 [2021-05-22 02:04:34,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:34,071 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24452 transitions. [2021-05-22 02:04:34,072 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:34,072 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24452 transitions. [2021-05-22 02:04:34,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:34,081 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:34,081 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:34,081 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable860 [2021-05-22 02:04:34,081 INFO L430 AbstractCegarLoop]: === Iteration 862 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:34,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:34,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1176871157, now seen corresponding path program 857 times [2021-05-22 02:04:34,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:34,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790243296] [2021-05-22 02:04:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:34,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:34,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:34,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790243296] [2021-05-22 02:04:34,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790243296] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:34,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:34,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:34,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020336000] [2021-05-22 02:04:34,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:34,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:34,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:34,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:34,198 INFO L87 Difference]: Start difference. First operand 5155 states and 24452 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:34,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:34,326 INFO L93 Difference]: Finished difference Result 11688 states and 52285 transitions. [2021-05-22 02:04:34,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:34,326 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:34,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:34,356 INFO L225 Difference]: With dead ends: 11688 [2021-05-22 02:04:34,356 INFO L226 Difference]: Without dead ends: 11211 [2021-05-22 02:04:34,357 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:34,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11211 states. [2021-05-22 02:04:34,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11211 to 5233. [2021-05-22 02:04:34,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 4.729548929663609) internal successors, (24745), 5232 states have internal predecessors, (24745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:34,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 24745 transitions. [2021-05-22 02:04:34,613 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 24745 transitions. Word has length 29 [2021-05-22 02:04:34,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:34,613 INFO L482 AbstractCegarLoop]: Abstraction has 5233 states and 24745 transitions. [2021-05-22 02:04:34,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:34,613 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 24745 transitions. [2021-05-22 02:04:34,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:34,622 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:34,622 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:34,622 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable861 [2021-05-22 02:04:34,622 INFO L430 AbstractCegarLoop]: === Iteration 863 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:34,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:34,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1725951593, now seen corresponding path program 858 times [2021-05-22 02:04:34,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:34,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680184263] [2021-05-22 02:04:34,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:34,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:34,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680184263] [2021-05-22 02:04:34,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680184263] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:34,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:34,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:34,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945550113] [2021-05-22 02:04:34,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:34,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:34,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:34,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:34,737 INFO L87 Difference]: Start difference. First operand 5233 states and 24745 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:34,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:34,870 INFO L93 Difference]: Finished difference Result 11686 states and 52202 transitions. [2021-05-22 02:04:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:34,870 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:34,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:34,901 INFO L225 Difference]: With dead ends: 11686 [2021-05-22 02:04:34,901 INFO L226 Difference]: Without dead ends: 11109 [2021-05-22 02:04:34,901 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:35,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11109 states. [2021-05-22 02:04:35,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11109 to 5131. [2021-05-22 02:04:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.749317738791423) internal successors, (24364), 5130 states have internal predecessors, (24364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:35,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24364 transitions. [2021-05-22 02:04:35,154 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24364 transitions. Word has length 29 [2021-05-22 02:04:35,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:35,154 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24364 transitions. [2021-05-22 02:04:35,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:35,154 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24364 transitions. [2021-05-22 02:04:35,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:35,163 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:35,163 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:35,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable862 [2021-05-22 02:04:35,163 INFO L430 AbstractCegarLoop]: === Iteration 864 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:35,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:35,163 INFO L82 PathProgramCache]: Analyzing trace with hash -504688885, now seen corresponding path program 859 times [2021-05-22 02:04:35,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:35,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520289713] [2021-05-22 02:04:35,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:35,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:35,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520289713] [2021-05-22 02:04:35,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520289713] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:35,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:35,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:35,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107354730] [2021-05-22 02:04:35,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:35,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:35,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:35,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:35,270 INFO L87 Difference]: Start difference. First operand 5131 states and 24364 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:35,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:35,372 INFO L93 Difference]: Finished difference Result 12232 states and 54598 transitions. [2021-05-22 02:04:35,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:35,372 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:35,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:35,403 INFO L225 Difference]: With dead ends: 12232 [2021-05-22 02:04:35,403 INFO L226 Difference]: Without dead ends: 11690 [2021-05-22 02:04:35,403 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:35,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11690 states. [2021-05-22 02:04:35,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11690 to 5361. [2021-05-22 02:04:35,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5361 states, 5360 states have (on average 4.7164179104477615) internal successors, (25280), 5360 states have internal predecessors, (25280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:35,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5361 states to 5361 states and 25280 transitions. [2021-05-22 02:04:35,664 INFO L78 Accepts]: Start accepts. Automaton has 5361 states and 25280 transitions. Word has length 29 [2021-05-22 02:04:35,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:35,664 INFO L482 AbstractCegarLoop]: Abstraction has 5361 states and 25280 transitions. [2021-05-22 02:04:35,665 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:35,665 INFO L276 IsEmpty]: Start isEmpty. Operand 5361 states and 25280 transitions. [2021-05-22 02:04:35,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:35,673 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:35,674 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:35,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable863 [2021-05-22 02:04:35,674 INFO L430 AbstractCegarLoop]: === Iteration 865 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:35,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:35,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1746941417, now seen corresponding path program 860 times [2021-05-22 02:04:35,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:35,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918849543] [2021-05-22 02:04:35,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:35,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:35,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:35,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918849543] [2021-05-22 02:04:35,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918849543] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:35,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:35,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:35,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592160064] [2021-05-22 02:04:35,781 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:35,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:35,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:35,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:35,781 INFO L87 Difference]: Start difference. First operand 5361 states and 25280 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:35,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:35,890 INFO L93 Difference]: Finished difference Result 12167 states and 54229 transitions. [2021-05-22 02:04:35,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:35,890 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:35,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:35,921 INFO L225 Difference]: With dead ends: 12167 [2021-05-22 02:04:35,921 INFO L226 Difference]: Without dead ends: 11547 [2021-05-22 02:04:35,921 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:36,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11547 states. [2021-05-22 02:04:36,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11547 to 5218. [2021-05-22 02:04:36,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5218 states, 5217 states have (on average 4.732604945370903) internal successors, (24690), 5217 states have internal predecessors, (24690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:36,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5218 states to 5218 states and 24690 transitions. [2021-05-22 02:04:36,244 INFO L78 Accepts]: Start accepts. Automaton has 5218 states and 24690 transitions. Word has length 29 [2021-05-22 02:04:36,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:36,244 INFO L482 AbstractCegarLoop]: Abstraction has 5218 states and 24690 transitions. [2021-05-22 02:04:36,244 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:36,244 INFO L276 IsEmpty]: Start isEmpty. Operand 5218 states and 24690 transitions. [2021-05-22 02:04:36,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:36,253 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:36,253 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:36,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable864 [2021-05-22 02:04:36,253 INFO L430 AbstractCegarLoop]: === Iteration 866 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:36,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:36,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1674198761, now seen corresponding path program 861 times [2021-05-22 02:04:36,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:36,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786692436] [2021-05-22 02:04:36,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:36,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:36,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:36,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786692436] [2021-05-22 02:04:36,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786692436] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:36,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:36,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:36,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220924689] [2021-05-22 02:04:36,360 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:36,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:36,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:36,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:36,360 INFO L87 Difference]: Start difference. First operand 5218 states and 24690 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:36,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:36,453 INFO L93 Difference]: Finished difference Result 12197 states and 54407 transitions. [2021-05-22 02:04:36,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:36,453 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:36,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:36,484 INFO L225 Difference]: With dead ends: 12197 [2021-05-22 02:04:36,484 INFO L226 Difference]: Without dead ends: 11655 [2021-05-22 02:04:36,484 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 108.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:36,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11655 states. [2021-05-22 02:04:36,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11655 to 5328. [2021-05-22 02:04:36,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5328 states, 5327 states have (on average 4.710906701708279) internal successors, (25095), 5327 states have internal predecessors, (25095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:36,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 25095 transitions. [2021-05-22 02:04:36,738 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 25095 transitions. Word has length 29 [2021-05-22 02:04:36,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:36,738 INFO L482 AbstractCegarLoop]: Abstraction has 5328 states and 25095 transitions. [2021-05-22 02:04:36,738 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:36,738 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 25095 transitions. [2021-05-22 02:04:36,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:36,747 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:36,747 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:36,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable865 [2021-05-22 02:04:36,747 INFO L430 AbstractCegarLoop]: === Iteration 867 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:36,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:36,747 INFO L82 PathProgramCache]: Analyzing trace with hash -2064980247, now seen corresponding path program 862 times [2021-05-22 02:04:36,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:36,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308641460] [2021-05-22 02:04:36,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:36,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:36,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:36,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308641460] [2021-05-22 02:04:36,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308641460] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:36,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:36,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:36,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221632713] [2021-05-22 02:04:36,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:36,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:36,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:36,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:36,849 INFO L87 Difference]: Start difference. First operand 5328 states and 25095 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:36,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:36,959 INFO L93 Difference]: Finished difference Result 12130 states and 54034 transitions. [2021-05-22 02:04:36,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:36,959 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:36,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:36,990 INFO L225 Difference]: With dead ends: 12130 [2021-05-22 02:04:36,990 INFO L226 Difference]: Without dead ends: 11545 [2021-05-22 02:04:36,990 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:37,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11545 states. [2021-05-22 02:04:37,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11545 to 5218. [2021-05-22 02:04:37,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5218 states, 5217 states have (on average 4.722062488019935) internal successors, (24635), 5217 states have internal predecessors, (24635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:37,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5218 states to 5218 states and 24635 transitions. [2021-05-22 02:04:37,242 INFO L78 Accepts]: Start accepts. Automaton has 5218 states and 24635 transitions. Word has length 29 [2021-05-22 02:04:37,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:37,242 INFO L482 AbstractCegarLoop]: Abstraction has 5218 states and 24635 transitions. [2021-05-22 02:04:37,242 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:37,242 INFO L276 IsEmpty]: Start isEmpty. Operand 5218 states and 24635 transitions. [2021-05-22 02:04:37,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:37,251 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:37,251 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:37,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable866 [2021-05-22 02:04:37,251 INFO L430 AbstractCegarLoop]: === Iteration 868 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:37,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:37,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1638420921, now seen corresponding path program 863 times [2021-05-22 02:04:37,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:37,251 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790554208] [2021-05-22 02:04:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:37,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:37,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:37,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790554208] [2021-05-22 02:04:37,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790554208] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:37,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:37,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:37,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497557037] [2021-05-22 02:04:37,354 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:37,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:37,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:37,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:37,354 INFO L87 Difference]: Start difference. First operand 5218 states and 24635 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:37,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:37,465 INFO L93 Difference]: Finished difference Result 12035 states and 53692 transitions. [2021-05-22 02:04:37,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:37,465 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:37,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:37,496 INFO L225 Difference]: With dead ends: 12035 [2021-05-22 02:04:37,497 INFO L226 Difference]: Without dead ends: 11558 [2021-05-22 02:04:37,497 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:37,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11558 states. [2021-05-22 02:04:37,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11558 to 5296. [2021-05-22 02:04:37,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5296 states, 5295 states have (on average 4.707837582625118) internal successors, (24928), 5295 states have internal predecessors, (24928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:37,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5296 states to 5296 states and 24928 transitions. [2021-05-22 02:04:37,745 INFO L78 Accepts]: Start accepts. Automaton has 5296 states and 24928 transitions. Word has length 29 [2021-05-22 02:04:37,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:37,746 INFO L482 AbstractCegarLoop]: Abstraction has 5296 states and 24928 transitions. [2021-05-22 02:04:37,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:37,746 INFO L276 IsEmpty]: Start isEmpty. Operand 5296 states and 24928 transitions. [2021-05-22 02:04:37,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:37,755 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:37,755 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:37,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable867 [2021-05-22 02:04:37,755 INFO L430 AbstractCegarLoop]: === Iteration 869 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:37,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:37,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1845228887, now seen corresponding path program 864 times [2021-05-22 02:04:37,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:37,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169170859] [2021-05-22 02:04:37,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:37,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:37,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169170859] [2021-05-22 02:04:37,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169170859] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:37,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:37,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:37,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503261736] [2021-05-22 02:04:37,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:37,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:37,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:37,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:37,857 INFO L87 Difference]: Start difference. First operand 5296 states and 24928 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:37,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:37,972 INFO L93 Difference]: Finished difference Result 12033 states and 53609 transitions. [2021-05-22 02:04:37,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:37,973 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:37,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:38,003 INFO L225 Difference]: With dead ends: 12033 [2021-05-22 02:04:38,003 INFO L226 Difference]: Without dead ends: 11357 [2021-05-22 02:04:38,003 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:38,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11357 states. [2021-05-22 02:04:38,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11357 to 5095. [2021-05-22 02:04:38,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5095 states, 5094 states have (on average 4.756576364350216) internal successors, (24230), 5094 states have internal predecessors, (24230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 24230 transitions. [2021-05-22 02:04:38,253 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 24230 transitions. Word has length 29 [2021-05-22 02:04:38,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:38,254 INFO L482 AbstractCegarLoop]: Abstraction has 5095 states and 24230 transitions. [2021-05-22 02:04:38,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 24230 transitions. [2021-05-22 02:04:38,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:38,262 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:38,262 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:38,262 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable868 [2021-05-22 02:04:38,262 INFO L430 AbstractCegarLoop]: === Iteration 870 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:38,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:38,262 INFO L82 PathProgramCache]: Analyzing trace with hash 761665991, now seen corresponding path program 865 times [2021-05-22 02:04:38,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:38,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959891994] [2021-05-22 02:04:38,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:38,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:38,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:38,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959891994] [2021-05-22 02:04:38,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959891994] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:38,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:38,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:38,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807777994] [2021-05-22 02:04:38,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:38,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:38,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:38,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:38,377 INFO L87 Difference]: Start difference. First operand 5095 states and 24230 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:38,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:38,487 INFO L93 Difference]: Finished difference Result 11722 states and 52452 transitions. [2021-05-22 02:04:38,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:38,487 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:38,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:38,516 INFO L225 Difference]: With dead ends: 11722 [2021-05-22 02:04:38,516 INFO L226 Difference]: Without dead ends: 11307 [2021-05-22 02:04:38,516 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:38,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11307 states. [2021-05-22 02:04:38,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11307 to 5259. [2021-05-22 02:04:38,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5259 states, 5258 states have (on average 4.7481932293647775) internal successors, (24966), 5258 states have internal predecessors, (24966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:38,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5259 states to 5259 states and 24966 transitions. [2021-05-22 02:04:38,765 INFO L78 Accepts]: Start accepts. Automaton has 5259 states and 24966 transitions. Word has length 29 [2021-05-22 02:04:38,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:38,766 INFO L482 AbstractCegarLoop]: Abstraction has 5259 states and 24966 transitions. [2021-05-22 02:04:38,766 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:38,766 INFO L276 IsEmpty]: Start isEmpty. Operand 5259 states and 24966 transitions. [2021-05-22 02:04:38,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:38,774 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:38,774 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:38,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable869 [2021-05-22 02:04:38,774 INFO L430 AbstractCegarLoop]: === Iteration 871 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:38,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:38,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1778480697, now seen corresponding path program 866 times [2021-05-22 02:04:38,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:38,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122429721] [2021-05-22 02:04:38,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:38,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:38,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122429721] [2021-05-22 02:04:38,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122429721] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:38,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:38,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:38,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225996497] [2021-05-22 02:04:38,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:38,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:38,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:38,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:38,889 INFO L87 Difference]: Start difference. First operand 5259 states and 24966 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:38,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:38,994 INFO L93 Difference]: Finished difference Result 11849 states and 52931 transitions. [2021-05-22 02:04:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:38,994 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:38,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:39,023 INFO L225 Difference]: With dead ends: 11849 [2021-05-22 02:04:39,023 INFO L226 Difference]: Without dead ends: 11227 [2021-05-22 02:04:39,023 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:39,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11227 states. [2021-05-22 02:04:39,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11227 to 5179. [2021-05-22 02:04:39,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.752027809965237) internal successors, (24606), 5178 states have internal predecessors, (24606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:39,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24606 transitions. [2021-05-22 02:04:39,266 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24606 transitions. Word has length 29 [2021-05-22 02:04:39,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:39,266 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24606 transitions. [2021-05-22 02:04:39,266 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:39,266 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24606 transitions. [2021-05-22 02:04:39,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:39,275 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:39,275 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:39,275 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable870 [2021-05-22 02:04:39,275 INFO L430 AbstractCegarLoop]: === Iteration 872 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:39,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:39,275 INFO L82 PathProgramCache]: Analyzing trace with hash 541864135, now seen corresponding path program 867 times [2021-05-22 02:04:39,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:39,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778536741] [2021-05-22 02:04:39,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:39,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:39,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778536741] [2021-05-22 02:04:39,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778536741] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:39,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:39,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:39,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438213626] [2021-05-22 02:04:39,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:39,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:39,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:39,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:39,391 INFO L87 Difference]: Start difference. First operand 5179 states and 24606 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:39,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:39,502 INFO L93 Difference]: Finished difference Result 11625 states and 52010 transitions. [2021-05-22 02:04:39,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:39,502 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:39,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:39,531 INFO L225 Difference]: With dead ends: 11625 [2021-05-22 02:04:39,531 INFO L226 Difference]: Without dead ends: 11210 [2021-05-22 02:04:39,531 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:39,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11210 states. [2021-05-22 02:04:39,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11210 to 5227. [2021-05-22 02:04:39,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5227 states, 5226 states have (on average 4.742058936088787) internal successors, (24782), 5226 states have internal predecessors, (24782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:39,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5227 states to 5227 states and 24782 transitions. [2021-05-22 02:04:39,779 INFO L78 Accepts]: Start accepts. Automaton has 5227 states and 24782 transitions. Word has length 29 [2021-05-22 02:04:39,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:39,780 INFO L482 AbstractCegarLoop]: Abstraction has 5227 states and 24782 transitions. [2021-05-22 02:04:39,780 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:39,780 INFO L276 IsEmpty]: Start isEmpty. Operand 5227 states and 24782 transitions. [2021-05-22 02:04:39,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:39,788 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:39,788 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:39,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable871 [2021-05-22 02:04:39,789 INFO L430 AbstractCegarLoop]: === Iteration 873 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:39,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:39,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1258527081, now seen corresponding path program 868 times [2021-05-22 02:04:39,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:39,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671815865] [2021-05-22 02:04:39,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:39,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:39,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:39,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671815865] [2021-05-22 02:04:39,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671815865] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:39,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:39,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:39,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855258429] [2021-05-22 02:04:39,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:39,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:39,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:39,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:39,905 INFO L87 Difference]: Start difference. First operand 5227 states and 24782 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:40,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:40,017 INFO L93 Difference]: Finished difference Result 11687 states and 52231 transitions. [2021-05-22 02:04:40,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:40,018 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:40,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:40,046 INFO L225 Difference]: With dead ends: 11687 [2021-05-22 02:04:40,046 INFO L226 Difference]: Without dead ends: 11162 [2021-05-22 02:04:40,046 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:40,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11162 states. [2021-05-22 02:04:40,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11162 to 5179. [2021-05-22 02:04:40,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.74739281575898) internal successors, (24582), 5178 states have internal predecessors, (24582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:40,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24582 transitions. [2021-05-22 02:04:40,289 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24582 transitions. Word has length 29 [2021-05-22 02:04:40,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:40,289 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24582 transitions. [2021-05-22 02:04:40,289 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:40,289 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24582 transitions. [2021-05-22 02:04:40,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:40,298 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:40,298 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:40,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable872 [2021-05-22 02:04:40,298 INFO L430 AbstractCegarLoop]: === Iteration 874 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:40,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:40,298 INFO L82 PathProgramCache]: Analyzing trace with hash -953214615, now seen corresponding path program 869 times [2021-05-22 02:04:40,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:40,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666992920] [2021-05-22 02:04:40,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:40,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:40,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:40,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666992920] [2021-05-22 02:04:40,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666992920] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:40,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:40,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:40,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117962311] [2021-05-22 02:04:40,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:40,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:40,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:40,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:40,406 INFO L87 Difference]: Start difference. First operand 5179 states and 24582 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:40,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:40,505 INFO L93 Difference]: Finished difference Result 11974 states and 53446 transitions. [2021-05-22 02:04:40,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:40,505 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:40,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:40,534 INFO L225 Difference]: With dead ends: 11974 [2021-05-22 02:04:40,535 INFO L226 Difference]: Without dead ends: 11432 [2021-05-22 02:04:40,535 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:40,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11432 states. [2021-05-22 02:04:40,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11432 to 5322. [2021-05-22 02:04:40,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5322 states, 5321 states have (on average 4.717346363465514) internal successors, (25101), 5321 states have internal predecessors, (25101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5322 states to 5322 states and 25101 transitions. [2021-05-22 02:04:40,787 INFO L78 Accepts]: Start accepts. Automaton has 5322 states and 25101 transitions. Word has length 29 [2021-05-22 02:04:40,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:40,787 INFO L482 AbstractCegarLoop]: Abstraction has 5322 states and 25101 transitions. [2021-05-22 02:04:40,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:40,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5322 states and 25101 transitions. [2021-05-22 02:04:40,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:40,796 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:40,796 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:40,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable873 [2021-05-22 02:04:40,797 INFO L430 AbstractCegarLoop]: === Iteration 875 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:40,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:40,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1298415687, now seen corresponding path program 870 times [2021-05-22 02:04:40,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:40,797 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595357038] [2021-05-22 02:04:40,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:40,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:40,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595357038] [2021-05-22 02:04:40,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595357038] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:40,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:40,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:40,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964157786] [2021-05-22 02:04:40,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:40,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:40,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:40,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:40,905 INFO L87 Difference]: Start difference. First operand 5322 states and 25101 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:41,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:41,034 INFO L93 Difference]: Finished difference Result 11909 states and 53077 transitions. [2021-05-22 02:04:41,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:41,034 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:41,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:41,064 INFO L225 Difference]: With dead ends: 11909 [2021-05-22 02:04:41,065 INFO L226 Difference]: Without dead ends: 11233 [2021-05-22 02:04:41,065 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:41,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11233 states. [2021-05-22 02:04:41,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11233 to 5123. [2021-05-22 02:04:41,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5123 states, 5122 states have (on average 4.754002342834831) internal successors, (24350), 5122 states have internal predecessors, (24350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:41,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 24350 transitions. [2021-05-22 02:04:41,306 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 24350 transitions. Word has length 29 [2021-05-22 02:04:41,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:41,306 INFO L482 AbstractCegarLoop]: Abstraction has 5123 states and 24350 transitions. [2021-05-22 02:04:41,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:41,306 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 24350 transitions. [2021-05-22 02:04:41,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:41,315 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:41,315 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:41,315 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable874 [2021-05-22 02:04:41,315 INFO L430 AbstractCegarLoop]: === Iteration 876 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:41,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:41,315 INFO L82 PathProgramCache]: Analyzing trace with hash 354827497, now seen corresponding path program 871 times [2021-05-22 02:04:41,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:41,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083343422] [2021-05-22 02:04:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:41,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:41,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:41,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083343422] [2021-05-22 02:04:41,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083343422] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:41,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:41,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:41,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644125671] [2021-05-22 02:04:41,433 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:41,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:41,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:41,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:41,433 INFO L87 Difference]: Start difference. First operand 5123 states and 24350 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:41,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:41,549 INFO L93 Difference]: Finished difference Result 11573 states and 51809 transitions. [2021-05-22 02:04:41,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:41,549 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:41,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:41,578 INFO L225 Difference]: With dead ends: 11573 [2021-05-22 02:04:41,578 INFO L226 Difference]: Without dead ends: 11158 [2021-05-22 02:04:41,578 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:41,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11158 states. [2021-05-22 02:04:41,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11158 to 5243. [2021-05-22 02:04:41,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 5242 states have (on average 4.745135444486837) internal successors, (24874), 5242 states have internal predecessors, (24874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:41,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 24874 transitions. [2021-05-22 02:04:41,824 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 24874 transitions. Word has length 29 [2021-05-22 02:04:41,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:41,824 INFO L482 AbstractCegarLoop]: Abstraction has 5243 states and 24874 transitions. [2021-05-22 02:04:41,824 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:41,824 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 24874 transitions. [2021-05-22 02:04:41,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:41,833 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:41,833 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:41,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable875 [2021-05-22 02:04:41,833 INFO L430 AbstractCegarLoop]: === Iteration 877 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:41,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:41,833 INFO L82 PathProgramCache]: Analyzing trace with hash 2109648105, now seen corresponding path program 872 times [2021-05-22 02:04:41,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:41,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868800970] [2021-05-22 02:04:41,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:41,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:41,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868800970] [2021-05-22 02:04:41,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868800970] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:41,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:41,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:41,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927168155] [2021-05-22 02:04:41,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:41,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:41,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:41,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:41,972 INFO L87 Difference]: Start difference. First operand 5243 states and 24874 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:42,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:42,071 INFO L93 Difference]: Finished difference Result 11700 states and 52288 transitions. [2021-05-22 02:04:42,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:42,071 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:42,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:42,100 INFO L225 Difference]: With dead ends: 11700 [2021-05-22 02:04:42,100 INFO L226 Difference]: Without dead ends: 11078 [2021-05-22 02:04:42,100 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:42,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11078 states. [2021-05-22 02:04:42,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11078 to 5163. [2021-05-22 02:04:42,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 4.748934521503293) internal successors, (24514), 5162 states have internal predecessors, (24514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:42,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 24514 transitions. [2021-05-22 02:04:42,356 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 24514 transitions. Word has length 29 [2021-05-22 02:04:42,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:42,356 INFO L482 AbstractCegarLoop]: Abstraction has 5163 states and 24514 transitions. [2021-05-22 02:04:42,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:42,356 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 24514 transitions. [2021-05-22 02:04:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:42,365 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:42,365 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:42,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable876 [2021-05-22 02:04:42,365 INFO L430 AbstractCegarLoop]: === Iteration 878 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:42,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:42,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1182291577, now seen corresponding path program 873 times [2021-05-22 02:04:42,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:42,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86082370] [2021-05-22 02:04:42,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:42,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:42,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:42,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86082370] [2021-05-22 02:04:42,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86082370] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:42,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:42,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:42,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50659850] [2021-05-22 02:04:42,476 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:42,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:42,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:42,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:42,476 INFO L87 Difference]: Start difference. First operand 5163 states and 24514 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:42,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:42,588 INFO L93 Difference]: Finished difference Result 11366 states and 50922 transitions. [2021-05-22 02:04:42,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:42,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:42,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:42,616 INFO L225 Difference]: With dead ends: 11366 [2021-05-22 02:04:42,616 INFO L226 Difference]: Without dead ends: 10951 [2021-05-22 02:04:42,617 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:42,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10951 states. [2021-05-22 02:04:42,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10951 to 5211. [2021-05-22 02:04:42,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5211 states, 5210 states have (on average 4.7389635316698655) internal successors, (24690), 5210 states have internal predecessors, (24690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:42,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5211 states to 5211 states and 24690 transitions. [2021-05-22 02:04:42,860 INFO L78 Accepts]: Start accepts. Automaton has 5211 states and 24690 transitions. Word has length 29 [2021-05-22 02:04:42,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:42,861 INFO L482 AbstractCegarLoop]: Abstraction has 5211 states and 24690 transitions. [2021-05-22 02:04:42,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:42,861 INFO L276 IsEmpty]: Start isEmpty. Operand 5211 states and 24690 transitions. [2021-05-22 02:04:42,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:42,870 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:42,870 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:42,870 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable877 [2021-05-22 02:04:42,870 INFO L430 AbstractCegarLoop]: === Iteration 879 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:42,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:42,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1366650921, now seen corresponding path program 874 times [2021-05-22 02:04:42,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:42,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722813590] [2021-05-22 02:04:42,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:42,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:42,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:42,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722813590] [2021-05-22 02:04:42,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722813590] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:42,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:42,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:42,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979183522] [2021-05-22 02:04:42,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:42,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:42,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:42,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:42,979 INFO L87 Difference]: Start difference. First operand 5211 states and 24690 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:43,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:43,084 INFO L93 Difference]: Finished difference Result 11094 states and 49913 transitions. [2021-05-22 02:04:43,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:43,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:43,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:43,112 INFO L225 Difference]: With dead ends: 11094 [2021-05-22 02:04:43,112 INFO L226 Difference]: Without dead ends: 10583 [2021-05-22 02:04:43,112 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:43,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10583 states. [2021-05-22 02:04:43,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10583 to 5163. [2021-05-22 02:04:43,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 4.744285160790391) internal successors, (24490), 5162 states have internal predecessors, (24490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:43,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 24490 transitions. [2021-05-22 02:04:43,355 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 24490 transitions. Word has length 29 [2021-05-22 02:04:43,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:43,355 INFO L482 AbstractCegarLoop]: Abstraction has 5163 states and 24490 transitions. [2021-05-22 02:04:43,355 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:43,355 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 24490 transitions. [2021-05-22 02:04:43,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:43,364 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:43,364 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:43,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable878 [2021-05-22 02:04:43,364 INFO L430 AbstractCegarLoop]: === Iteration 880 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:43,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:43,364 INFO L82 PathProgramCache]: Analyzing trace with hash 761081897, now seen corresponding path program 875 times [2021-05-22 02:04:43,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:43,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353226297] [2021-05-22 02:04:43,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:43,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:43,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353226297] [2021-05-22 02:04:43,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353226297] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:43,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:43,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:43,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337580470] [2021-05-22 02:04:43,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:43,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:43,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:43,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:43,489 INFO L87 Difference]: Start difference. First operand 5163 states and 24490 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:43,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:43,593 INFO L93 Difference]: Finished difference Result 11549 states and 51693 transitions. [2021-05-22 02:04:43,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:43,593 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:43,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:43,622 INFO L225 Difference]: With dead ends: 11549 [2021-05-22 02:04:43,623 INFO L226 Difference]: Without dead ends: 11007 [2021-05-22 02:04:43,623 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:43,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11007 states. [2021-05-22 02:04:43,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11007 to 5267. [2021-05-22 02:04:43,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5267 states, 5266 states have (on average 4.7242688947968094) internal successors, (24878), 5266 states have internal predecessors, (24878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5267 states to 5267 states and 24878 transitions. [2021-05-22 02:04:43,866 INFO L78 Accepts]: Start accepts. Automaton has 5267 states and 24878 transitions. Word has length 29 [2021-05-22 02:04:43,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:43,866 INFO L482 AbstractCegarLoop]: Abstraction has 5267 states and 24878 transitions. [2021-05-22 02:04:43,866 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:43,866 INFO L276 IsEmpty]: Start isEmpty. Operand 5267 states and 24878 transitions. [2021-05-22 02:04:43,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:43,875 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:43,876 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:43,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable879 [2021-05-22 02:04:43,876 INFO L430 AbstractCegarLoop]: === Iteration 881 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:43,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:43,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1322514695, now seen corresponding path program 876 times [2021-05-22 02:04:43,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:43,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162607370] [2021-05-22 02:04:43,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:43,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:43,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:43,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162607370] [2021-05-22 02:04:43,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162607370] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:43,996 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:43,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:43,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547976149] [2021-05-22 02:04:43,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:43,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:43,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:43,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:43,997 INFO L87 Difference]: Start difference. First operand 5267 states and 24878 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:44,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:44,112 INFO L93 Difference]: Finished difference Result 11150 states and 50101 transitions. [2021-05-22 02:04:44,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:44,113 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:44,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:44,140 INFO L225 Difference]: With dead ends: 11150 [2021-05-22 02:04:44,140 INFO L226 Difference]: Without dead ends: 10543 [2021-05-22 02:04:44,140 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:44,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10543 states. [2021-05-22 02:04:44,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10543 to 5123. [2021-05-22 02:04:44,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5123 states, 5122 states have (on average 4.750097618117922) internal successors, (24330), 5122 states have internal predecessors, (24330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:44,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 24330 transitions. [2021-05-22 02:04:44,381 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 24330 transitions. Word has length 29 [2021-05-22 02:04:44,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:44,381 INFO L482 AbstractCegarLoop]: Abstraction has 5123 states and 24330 transitions. [2021-05-22 02:04:44,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:44,381 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 24330 transitions. [2021-05-22 02:04:44,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:44,390 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:44,390 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:44,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable880 [2021-05-22 02:04:44,390 INFO L430 AbstractCegarLoop]: === Iteration 882 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:44,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:44,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1595916423, now seen corresponding path program 877 times [2021-05-22 02:04:44,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:44,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967711236] [2021-05-22 02:04:44,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:44,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:44,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967711236] [2021-05-22 02:04:44,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967711236] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:44,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:44,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:44,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631728336] [2021-05-22 02:04:44,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:44,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:44,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:44,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:44,507 INFO L87 Difference]: Start difference. First operand 5123 states and 24330 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:44,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:44,630 INFO L93 Difference]: Finished difference Result 11363 states and 50905 transitions. [2021-05-22 02:04:44,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:44,630 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:44,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:44,658 INFO L225 Difference]: With dead ends: 11363 [2021-05-22 02:04:44,659 INFO L226 Difference]: Without dead ends: 10948 [2021-05-22 02:04:44,659 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:44,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10948 states. [2021-05-22 02:04:44,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10948 to 5195. [2021-05-22 02:04:44,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.74201001155179) internal successors, (24630), 5194 states have internal predecessors, (24630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:44,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24630 transitions. [2021-05-22 02:04:44,902 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24630 transitions. Word has length 29 [2021-05-22 02:04:44,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:44,902 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24630 transitions. [2021-05-22 02:04:44,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:44,902 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24630 transitions. [2021-05-22 02:04:44,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:44,911 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:44,911 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:44,911 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable881 [2021-05-22 02:04:44,911 INFO L430 AbstractCegarLoop]: === Iteration 883 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:44,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:44,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1982387927, now seen corresponding path program 878 times [2021-05-22 02:04:44,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:44,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008116591] [2021-05-22 02:04:44,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:45,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:45,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:45,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008116591] [2021-05-22 02:04:45,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008116591] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:45,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:45,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:45,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103765533] [2021-05-22 02:04:45,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:45,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:45,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:45,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:45,028 INFO L87 Difference]: Start difference. First operand 5195 states and 24630 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:45,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:45,142 INFO L93 Difference]: Finished difference Result 11425 states and 51126 transitions. [2021-05-22 02:04:45,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:45,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:45,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:45,171 INFO L225 Difference]: With dead ends: 11425 [2021-05-22 02:04:45,171 INFO L226 Difference]: Without dead ends: 10900 [2021-05-22 02:04:45,171 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:45,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10900 states. [2021-05-22 02:04:45,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10900 to 5147. [2021-05-22 02:04:45,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5147 states, 5146 states have (on average 4.747376603186941) internal successors, (24430), 5146 states have internal predecessors, (24430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:45,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5147 states to 5147 states and 24430 transitions. [2021-05-22 02:04:45,414 INFO L78 Accepts]: Start accepts. Automaton has 5147 states and 24430 transitions. Word has length 29 [2021-05-22 02:04:45,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:45,414 INFO L482 AbstractCegarLoop]: Abstraction has 5147 states and 24430 transitions. [2021-05-22 02:04:45,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:45,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5147 states and 24430 transitions. [2021-05-22 02:04:45,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:45,423 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:45,423 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:45,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable882 [2021-05-22 02:04:45,424 INFO L430 AbstractCegarLoop]: === Iteration 884 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:45,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:45,425 INFO L82 PathProgramCache]: Analyzing trace with hash -964158615, now seen corresponding path program 879 times [2021-05-22 02:04:45,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:45,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819824680] [2021-05-22 02:04:45,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:45,550 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:45,550 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819824680] [2021-05-22 02:04:45,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819824680] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:45,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:45,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:45,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208310693] [2021-05-22 02:04:45,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:45,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:45,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:45,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:45,551 INFO L87 Difference]: Start difference. First operand 5147 states and 24430 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:45,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:45,663 INFO L93 Difference]: Finished difference Result 11253 states and 50436 transitions. [2021-05-22 02:04:45,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:45,663 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:45,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:45,691 INFO L225 Difference]: With dead ends: 11253 [2021-05-22 02:04:45,691 INFO L226 Difference]: Without dead ends: 10838 [2021-05-22 02:04:45,691 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:45,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10838 states. [2021-05-22 02:04:45,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10838 to 5195. [2021-05-22 02:04:45,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.737389295340778) internal successors, (24606), 5194 states have internal predecessors, (24606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:45,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24606 transitions. [2021-05-22 02:04:45,935 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24606 transitions. Word has length 29 [2021-05-22 02:04:45,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:45,935 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24606 transitions. [2021-05-22 02:04:45,935 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:45,935 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24606 transitions. [2021-05-22 02:04:45,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:45,944 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:45,944 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:45,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable883 [2021-05-22 02:04:45,944 INFO L430 AbstractCegarLoop]: === Iteration 885 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:45,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:45,944 INFO L82 PathProgramCache]: Analyzing trace with hash 590464809, now seen corresponding path program 880 times [2021-05-22 02:04:45,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:45,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878571074] [2021-05-22 02:04:45,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:46,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:46,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878571074] [2021-05-22 02:04:46,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878571074] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:46,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:46,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:46,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911770184] [2021-05-22 02:04:46,052 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:46,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:46,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:46,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:46,053 INFO L87 Difference]: Start difference. First operand 5195 states and 24606 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:46,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:46,162 INFO L93 Difference]: Finished difference Result 10981 states and 49427 transitions. [2021-05-22 02:04:46,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:46,162 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:46,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:46,190 INFO L225 Difference]: With dead ends: 10981 [2021-05-22 02:04:46,190 INFO L226 Difference]: Without dead ends: 10470 [2021-05-22 02:04:46,190 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:46,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10470 states. [2021-05-22 02:04:46,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10470 to 5147. [2021-05-22 02:04:46,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5147 states, 5146 states have (on average 4.742712786630393) internal successors, (24406), 5146 states have internal predecessors, (24406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:46,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5147 states to 5147 states and 24406 transitions. [2021-05-22 02:04:46,509 INFO L78 Accepts]: Start accepts. Automaton has 5147 states and 24406 transitions. Word has length 29 [2021-05-22 02:04:46,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:46,509 INFO L482 AbstractCegarLoop]: Abstraction has 5147 states and 24406 transitions. [2021-05-22 02:04:46,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:46,509 INFO L276 IsEmpty]: Start isEmpty. Operand 5147 states and 24406 transitions. [2021-05-22 02:04:46,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:46,518 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:46,518 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:46,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable884 [2021-05-22 02:04:46,519 INFO L430 AbstractCegarLoop]: === Iteration 886 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:46,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:46,519 INFO L82 PathProgramCache]: Analyzing trace with hash -580006069, now seen corresponding path program 881 times [2021-05-22 02:04:46,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:46,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109796818] [2021-05-22 02:04:46,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:46,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:46,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:46,635 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109796818] [2021-05-22 02:04:46,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109796818] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:46,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:46,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:46,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92594240] [2021-05-22 02:04:46,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:46,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:46,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:46,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:46,635 INFO L87 Difference]: Start difference. First operand 5147 states and 24406 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:46,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:46,759 INFO L93 Difference]: Finished difference Result 11339 states and 50805 transitions. [2021-05-22 02:04:46,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:46,760 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:46,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:46,787 INFO L225 Difference]: With dead ends: 11339 [2021-05-22 02:04:46,787 INFO L226 Difference]: Without dead ends: 10862 [2021-05-22 02:04:46,787 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:46,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10862 states. [2021-05-22 02:04:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10862 to 5219. [2021-05-22 02:04:47,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5219 states, 5218 states have (on average 4.730164814105021) internal successors, (24682), 5218 states have internal predecessors, (24682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:47,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 24682 transitions. [2021-05-22 02:04:47,029 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 24682 transitions. Word has length 29 [2021-05-22 02:04:47,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:47,029 INFO L482 AbstractCegarLoop]: Abstraction has 5219 states and 24682 transitions. [2021-05-22 02:04:47,029 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:47,029 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 24682 transitions. [2021-05-22 02:04:47,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:47,038 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:47,038 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:47,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable885 [2021-05-22 02:04:47,038 INFO L430 AbstractCegarLoop]: === Iteration 887 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:47,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:47,038 INFO L82 PathProgramCache]: Analyzing trace with hash -669765719, now seen corresponding path program 882 times [2021-05-22 02:04:47,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:47,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238728691] [2021-05-22 02:04:47,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:47,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:47,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238728691] [2021-05-22 02:04:47,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238728691] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:47,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:47,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:47,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741555675] [2021-05-22 02:04:47,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:47,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:47,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:47,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:47,154 INFO L87 Difference]: Start difference. First operand 5219 states and 24682 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:47,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:47,268 INFO L93 Difference]: Finished difference Result 11005 states and 49503 transitions. [2021-05-22 02:04:47,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:47,268 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:47,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:47,295 INFO L225 Difference]: With dead ends: 11005 [2021-05-22 02:04:47,295 INFO L226 Difference]: Without dead ends: 10446 [2021-05-22 02:04:47,295 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:47,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10446 states. [2021-05-22 02:04:47,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10446 to 5123. [2021-05-22 02:04:47,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5123 states, 5122 states have (on average 4.747754783287778) internal successors, (24318), 5122 states have internal predecessors, (24318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 24318 transitions. [2021-05-22 02:04:47,535 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 24318 transitions. Word has length 29 [2021-05-22 02:04:47,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:47,535 INFO L482 AbstractCegarLoop]: Abstraction has 5123 states and 24318 transitions. [2021-05-22 02:04:47,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:47,535 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 24318 transitions. [2021-05-22 02:04:47,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:47,544 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:47,544 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:47,544 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable886 [2021-05-22 02:04:47,544 INFO L430 AbstractCegarLoop]: === Iteration 888 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:47,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:47,545 INFO L82 PathProgramCache]: Analyzing trace with hash 911515467, now seen corresponding path program 883 times [2021-05-22 02:04:47,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:47,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221671498] [2021-05-22 02:04:47,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:47,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:47,653 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:47,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221671498] [2021-05-22 02:04:47,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221671498] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:47,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:47,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:47,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498792874] [2021-05-22 02:04:47,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:47,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:47,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:47,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:47,653 INFO L87 Difference]: Start difference. First operand 5123 states and 24318 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:47,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:47,749 INFO L93 Difference]: Finished difference Result 11939 states and 53360 transitions. [2021-05-22 02:04:47,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:47,750 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:47,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:47,778 INFO L225 Difference]: With dead ends: 11939 [2021-05-22 02:04:47,779 INFO L226 Difference]: Without dead ends: 11397 [2021-05-22 02:04:47,779 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:47,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11397 states. [2021-05-22 02:04:48,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11397 to 5334. [2021-05-22 02:04:48,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5334 states, 5333 states have (on average 4.720232514532158) internal successors, (25173), 5333 states have internal predecessors, (25173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5334 states to 5334 states and 25173 transitions. [2021-05-22 02:04:48,028 INFO L78 Accepts]: Start accepts. Automaton has 5334 states and 25173 transitions. Word has length 29 [2021-05-22 02:04:48,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:48,028 INFO L482 AbstractCegarLoop]: Abstraction has 5334 states and 25173 transitions. [2021-05-22 02:04:48,028 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:48,028 INFO L276 IsEmpty]: Start isEmpty. Operand 5334 states and 25173 transitions. [2021-05-22 02:04:48,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:48,037 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:48,037 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:48,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable887 [2021-05-22 02:04:48,037 INFO L430 AbstractCegarLoop]: === Iteration 889 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:48,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:48,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1131821527, now seen corresponding path program 884 times [2021-05-22 02:04:48,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:48,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892556623] [2021-05-22 02:04:48,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:48,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:48,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892556623] [2021-05-22 02:04:48,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892556623] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:48,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:48,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:48,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289445212] [2021-05-22 02:04:48,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:48,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:48,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:48,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:48,145 INFO L87 Difference]: Start difference. First operand 5334 states and 25173 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:48,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:48,251 INFO L93 Difference]: Finished difference Result 11874 states and 52991 transitions. [2021-05-22 02:04:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:48,251 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:48,280 INFO L225 Difference]: With dead ends: 11874 [2021-05-22 02:04:48,280 INFO L226 Difference]: Without dead ends: 11254 [2021-05-22 02:04:48,280 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:48,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11254 states. [2021-05-22 02:04:48,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11254 to 5191. [2021-05-22 02:04:48,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.737186897880539) internal successors, (24586), 5190 states have internal predecessors, (24586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24586 transitions. [2021-05-22 02:04:48,526 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24586 transitions. Word has length 29 [2021-05-22 02:04:48,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:48,526 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24586 transitions. [2021-05-22 02:04:48,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:48,526 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24586 transitions. [2021-05-22 02:04:48,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:48,535 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:48,535 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:48,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable888 [2021-05-22 02:04:48,535 INFO L430 AbstractCegarLoop]: === Iteration 890 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:48,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:48,535 INFO L82 PathProgramCache]: Analyzing trace with hash 551837737, now seen corresponding path program 885 times [2021-05-22 02:04:48,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:48,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431478561] [2021-05-22 02:04:48,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:48,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:48,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431478561] [2021-05-22 02:04:48,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431478561] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:48,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:48,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:48,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721289631] [2021-05-22 02:04:48,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:48,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:48,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:48,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:48,655 INFO L87 Difference]: Start difference. First operand 5191 states and 24586 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:48,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:48,745 INFO L93 Difference]: Finished difference Result 11663 states and 52182 transitions. [2021-05-22 02:04:48,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:48,745 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:48,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:48,773 INFO L225 Difference]: With dead ends: 11663 [2021-05-22 02:04:48,773 INFO L226 Difference]: Without dead ends: 11121 [2021-05-22 02:04:48,773 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:48,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11121 states. [2021-05-22 02:04:48,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11121 to 5295. [2021-05-22 02:04:49,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5295 states, 5294 states have (on average 4.717415942576502) internal successors, (24974), 5294 states have internal predecessors, (24974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:49,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 24974 transitions. [2021-05-22 02:04:49,016 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 24974 transitions. Word has length 29 [2021-05-22 02:04:49,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:49,016 INFO L482 AbstractCegarLoop]: Abstraction has 5295 states and 24974 transitions. [2021-05-22 02:04:49,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:49,016 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 24974 transitions. [2021-05-22 02:04:49,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:49,025 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:49,025 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:49,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable889 [2021-05-22 02:04:49,025 INFO L430 AbstractCegarLoop]: === Iteration 891 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:49,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:49,025 INFO L82 PathProgramCache]: Analyzing trace with hash -165730263, now seen corresponding path program 886 times [2021-05-22 02:04:49,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:49,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482990826] [2021-05-22 02:04:49,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:49,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:49,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:49,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482990826] [2021-05-22 02:04:49,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482990826] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:49,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:49,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:49,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254215558] [2021-05-22 02:04:49,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:49,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:49,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:49,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:49,146 INFO L87 Difference]: Start difference. First operand 5295 states and 24974 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:49,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:49,252 INFO L93 Difference]: Finished difference Result 11264 states and 50590 transitions. [2021-05-22 02:04:49,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:49,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:49,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:49,280 INFO L225 Difference]: With dead ends: 11264 [2021-05-22 02:04:49,280 INFO L226 Difference]: Without dead ends: 10697 [2021-05-22 02:04:49,280 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:49,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10697 states. [2021-05-22 02:04:49,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10697 to 5191. [2021-05-22 02:04:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.727167630057804) internal successors, (24534), 5190 states have internal predecessors, (24534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:49,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24534 transitions. [2021-05-22 02:04:49,518 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24534 transitions. Word has length 29 [2021-05-22 02:04:49,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:49,518 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24534 transitions. [2021-05-22 02:04:49,518 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:49,518 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24534 transitions. [2021-05-22 02:04:49,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:49,526 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:49,526 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:49,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable890 [2021-05-22 02:04:49,527 INFO L430 AbstractCegarLoop]: === Iteration 892 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:49,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:49,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1534185351, now seen corresponding path program 887 times [2021-05-22 02:04:49,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:49,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351837014] [2021-05-22 02:04:49,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:49,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:49,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:49,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351837014] [2021-05-22 02:04:49,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351837014] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:49,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:49,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:49,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814220985] [2021-05-22 02:04:49,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:49,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:49,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:49,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:49,645 INFO L87 Difference]: Start difference. First operand 5191 states and 24534 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:49,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:49,754 INFO L93 Difference]: Finished difference Result 11566 states and 51728 transitions. [2021-05-22 02:04:49,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:49,754 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:49,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:49,783 INFO L225 Difference]: With dead ends: 11566 [2021-05-22 02:04:49,784 INFO L226 Difference]: Without dead ends: 11089 [2021-05-22 02:04:49,784 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:49,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11089 states. [2021-05-22 02:04:50,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11089 to 5263. [2021-05-22 02:04:50,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5262 states have (on average 4.714937286202964) internal successors, (24810), 5262 states have internal predecessors, (24810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:50,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 24810 transitions. [2021-05-22 02:04:50,025 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 24810 transitions. Word has length 29 [2021-05-22 02:04:50,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:50,025 INFO L482 AbstractCegarLoop]: Abstraction has 5263 states and 24810 transitions. [2021-05-22 02:04:50,025 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:50,025 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 24810 transitions. [2021-05-22 02:04:50,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:50,033 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:50,034 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:50,034 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable891 [2021-05-22 02:04:50,034 INFO L430 AbstractCegarLoop]: === Iteration 893 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:50,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:50,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1248363799, now seen corresponding path program 888 times [2021-05-22 02:04:50,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:50,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516950474] [2021-05-22 02:04:50,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:50,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:50,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516950474] [2021-05-22 02:04:50,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516950474] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:50,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:50,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:50,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065156733] [2021-05-22 02:04:50,170 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:50,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:50,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:50,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:50,170 INFO L87 Difference]: Start difference. First operand 5263 states and 24810 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:50,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:50,276 INFO L93 Difference]: Finished difference Result 11232 states and 50426 transitions. [2021-05-22 02:04:50,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:50,276 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:50,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:50,304 INFO L225 Difference]: With dead ends: 11232 [2021-05-22 02:04:50,304 INFO L226 Difference]: Without dead ends: 10601 [2021-05-22 02:04:50,304 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:50,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10601 states. [2021-05-22 02:04:50,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10601 to 5095. [2021-05-22 02:04:50,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5095 states, 5094 states have (on average 4.7538280329799765) internal successors, (24216), 5094 states have internal predecessors, (24216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:50,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 24216 transitions. [2021-05-22 02:04:50,540 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 24216 transitions. Word has length 29 [2021-05-22 02:04:50,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:50,541 INFO L482 AbstractCegarLoop]: Abstraction has 5095 states and 24216 transitions. [2021-05-22 02:04:50,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:50,541 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 24216 transitions. [2021-05-22 02:04:50,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:50,549 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:50,549 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:50,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable892 [2021-05-22 02:04:50,549 INFO L430 AbstractCegarLoop]: === Iteration 894 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:50,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:50,549 INFO L82 PathProgramCache]: Analyzing trace with hash 87880041, now seen corresponding path program 889 times [2021-05-22 02:04:50,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:50,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823252677] [2021-05-22 02:04:50,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:50,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:50,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:50,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823252677] [2021-05-22 02:04:50,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823252677] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:50,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:50,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:50,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202552564] [2021-05-22 02:04:50,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:50,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:50,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:50,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:50,660 INFO L87 Difference]: Start difference. First operand 5095 states and 24216 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:50,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:50,781 INFO L93 Difference]: Finished difference Result 11612 states and 52034 transitions. [2021-05-22 02:04:50,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:50,781 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:50,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:50,809 INFO L225 Difference]: With dead ends: 11612 [2021-05-22 02:04:50,809 INFO L226 Difference]: Without dead ends: 11197 [2021-05-22 02:04:50,809 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:50,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11197 states. [2021-05-22 02:04:51,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11197 to 5235. [2021-05-22 02:04:51,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5235 states, 5234 states have (on average 4.748184944593046) internal successors, (24852), 5234 states have internal predecessors, (24852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:51,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5235 states to 5235 states and 24852 transitions. [2021-05-22 02:04:51,050 INFO L78 Accepts]: Start accepts. Automaton has 5235 states and 24852 transitions. Word has length 29 [2021-05-22 02:04:51,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:51,050 INFO L482 AbstractCegarLoop]: Abstraction has 5235 states and 24852 transitions. [2021-05-22 02:04:51,050 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:51,050 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 24852 transitions. [2021-05-22 02:04:51,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:51,058 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:51,058 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:51,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable893 [2021-05-22 02:04:51,058 INFO L430 AbstractCegarLoop]: === Iteration 895 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:51,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:51,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1842700649, now seen corresponding path program 890 times [2021-05-22 02:04:51,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:51,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281757209] [2021-05-22 02:04:51,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:51,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:51,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:51,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281757209] [2021-05-22 02:04:51,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281757209] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:51,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:51,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:51,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260179153] [2021-05-22 02:04:51,182 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:51,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:51,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:51,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:51,183 INFO L87 Difference]: Start difference. First operand 5235 states and 24852 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:51,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:51,278 INFO L93 Difference]: Finished difference Result 11739 states and 52513 transitions. [2021-05-22 02:04:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:51,279 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:51,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:51,307 INFO L225 Difference]: With dead ends: 11739 [2021-05-22 02:04:51,307 INFO L226 Difference]: Without dead ends: 11117 [2021-05-22 02:04:51,307 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:51,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11117 states. [2021-05-22 02:04:51,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11117 to 5155. [2021-05-22 02:04:51,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.752037252619325) internal successors, (24492), 5154 states have internal predecessors, (24492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:51,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24492 transitions. [2021-05-22 02:04:51,547 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24492 transitions. Word has length 29 [2021-05-22 02:04:51,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:51,547 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24492 transitions. [2021-05-22 02:04:51,548 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:51,548 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24492 transitions. [2021-05-22 02:04:51,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:51,556 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:51,556 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:51,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable894 [2021-05-22 02:04:51,556 INFO L430 AbstractCegarLoop]: === Iteration 896 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:51,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:51,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1799623417, now seen corresponding path program 891 times [2021-05-22 02:04:51,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:51,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257049210] [2021-05-22 02:04:51,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:51,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:51,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:51,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257049210] [2021-05-22 02:04:51,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257049210] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:51,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:51,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:51,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639223548] [2021-05-22 02:04:51,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:51,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:51,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:51,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:51,674 INFO L87 Difference]: Start difference. First operand 5155 states and 24492 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:51,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:51,797 INFO L93 Difference]: Finished difference Result 11513 states and 51587 transitions. [2021-05-22 02:04:51,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:51,797 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:51,826 INFO L225 Difference]: With dead ends: 11513 [2021-05-22 02:04:51,826 INFO L226 Difference]: Without dead ends: 11098 [2021-05-22 02:04:51,826 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:51,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11098 states. [2021-05-22 02:04:52,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11098 to 5203. [2021-05-22 02:04:52,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.742022299115725) internal successors, (24668), 5202 states have internal predecessors, (24668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:52,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24668 transitions. [2021-05-22 02:04:52,071 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24668 transitions. Word has length 29 [2021-05-22 02:04:52,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:52,071 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24668 transitions. [2021-05-22 02:04:52,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:52,071 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24668 transitions. [2021-05-22 02:04:52,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:52,080 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:52,080 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:52,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable895 [2021-05-22 02:04:52,080 INFO L430 AbstractCegarLoop]: === Iteration 897 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:52,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:52,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1980662953, now seen corresponding path program 892 times [2021-05-22 02:04:52,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:52,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737551997] [2021-05-22 02:04:52,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:52,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:52,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737551997] [2021-05-22 02:04:52,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737551997] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:52,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:52,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:52,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770242894] [2021-05-22 02:04:52,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:52,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:52,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:52,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:52,198 INFO L87 Difference]: Start difference. First operand 5203 states and 24668 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:52,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:52,327 INFO L93 Difference]: Finished difference Result 11573 states and 51803 transitions. [2021-05-22 02:04:52,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:52,327 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:52,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:52,355 INFO L225 Difference]: With dead ends: 11573 [2021-05-22 02:04:52,355 INFO L226 Difference]: Without dead ends: 11050 [2021-05-22 02:04:52,355 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:52,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11050 states. [2021-05-22 02:04:52,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11050 to 5155. [2021-05-22 02:04:52,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.7473806752037255) internal successors, (24468), 5154 states have internal predecessors, (24468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:52,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24468 transitions. [2021-05-22 02:04:52,594 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24468 transitions. Word has length 29 [2021-05-22 02:04:52,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:52,594 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24468 transitions. [2021-05-22 02:04:52,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:52,594 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24468 transitions. [2021-05-22 02:04:52,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:52,602 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:52,602 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:52,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable896 [2021-05-22 02:04:52,602 INFO L430 AbstractCegarLoop]: === Iteration 898 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:52,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:52,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1575476055, now seen corresponding path program 893 times [2021-05-22 02:04:52,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:52,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908173861] [2021-05-22 02:04:52,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:52,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:52,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:52,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908173861] [2021-05-22 02:04:52,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908173861] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:52,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:52,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:52,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910614628] [2021-05-22 02:04:52,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:52,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:52,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:52,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:52,707 INFO L87 Difference]: Start difference. First operand 5155 states and 24468 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:52,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:52,816 INFO L93 Difference]: Finished difference Result 11829 states and 52908 transitions. [2021-05-22 02:04:52,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:52,816 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:52,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:52,845 INFO L225 Difference]: With dead ends: 11829 [2021-05-22 02:04:52,845 INFO L226 Difference]: Without dead ends: 11287 [2021-05-22 02:04:52,845 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 111.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:52,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11287 states. [2021-05-22 02:04:53,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11287 to 5265. [2021-05-22 02:04:53,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 5264 states have (on average 4.7251139817629175) internal successors, (24873), 5264 states have internal predecessors, (24873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:53,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 24873 transitions. [2021-05-22 02:04:53,094 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 24873 transitions. Word has length 29 [2021-05-22 02:04:53,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:53,094 INFO L482 AbstractCegarLoop]: Abstraction has 5265 states and 24873 transitions. [2021-05-22 02:04:53,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:53,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 24873 transitions. [2021-05-22 02:04:53,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:53,104 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:53,104 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:53,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable897 [2021-05-22 02:04:53,104 INFO L430 AbstractCegarLoop]: === Iteration 899 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:53,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:53,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1978539143, now seen corresponding path program 894 times [2021-05-22 02:04:53,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:53,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878823239] [2021-05-22 02:04:53,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:53,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:53,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878823239] [2021-05-22 02:04:53,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878823239] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:53,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:53,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:53,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866011535] [2021-05-22 02:04:53,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:53,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:53,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:53,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:53,208 INFO L87 Difference]: Start difference. First operand 5265 states and 24873 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:53,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:53,339 INFO L93 Difference]: Finished difference Result 11762 states and 52535 transitions. [2021-05-22 02:04:53,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:53,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:53,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:53,369 INFO L225 Difference]: With dead ends: 11762 [2021-05-22 02:04:53,369 INFO L226 Difference]: Without dead ends: 11137 [2021-05-22 02:04:53,369 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:53,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11137 states. [2021-05-22 02:04:53,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11137 to 5115. [2021-05-22 02:04:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 4.75322643723113) internal successors, (24308), 5114 states have internal predecessors, (24308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:53,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 24308 transitions. [2021-05-22 02:04:53,615 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 24308 transitions. Word has length 29 [2021-05-22 02:04:53,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:53,615 INFO L482 AbstractCegarLoop]: Abstraction has 5115 states and 24308 transitions. [2021-05-22 02:04:53,615 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:53,616 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 24308 transitions. [2021-05-22 02:04:53,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:53,624 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:53,624 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:53,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable898 [2021-05-22 02:04:53,624 INFO L430 AbstractCegarLoop]: === Iteration 900 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:53,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:53,625 INFO L82 PathProgramCache]: Analyzing trace with hash 572850759, now seen corresponding path program 895 times [2021-05-22 02:04:53,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:53,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128201714] [2021-05-22 02:04:53,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:53,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:53,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:53,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128201714] [2021-05-22 02:04:53,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128201714] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:53,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:53,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:53,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519344974] [2021-05-22 02:04:53,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:53,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:53,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:53,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:53,734 INFO L87 Difference]: Start difference. First operand 5115 states and 24308 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:53,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:53,843 INFO L93 Difference]: Finished difference Result 11514 states and 51583 transitions. [2021-05-22 02:04:53,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:53,844 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:53,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:53,871 INFO L225 Difference]: With dead ends: 11514 [2021-05-22 02:04:53,871 INFO L226 Difference]: Without dead ends: 11099 [2021-05-22 02:04:53,871 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:53,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11099 states. [2021-05-22 02:04:54,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11099 to 5235. [2021-05-22 02:04:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5235 states, 5234 states have (on average 4.744363775315247) internal successors, (24832), 5234 states have internal predecessors, (24832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:54,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5235 states to 5235 states and 24832 transitions. [2021-05-22 02:04:54,120 INFO L78 Accepts]: Start accepts. Automaton has 5235 states and 24832 transitions. Word has length 29 [2021-05-22 02:04:54,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:54,120 INFO L482 AbstractCegarLoop]: Abstraction has 5235 states and 24832 transitions. [2021-05-22 02:04:54,121 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:54,121 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 24832 transitions. [2021-05-22 02:04:54,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:54,129 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:54,129 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:54,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable899 [2021-05-22 02:04:54,129 INFO L430 AbstractCegarLoop]: === Iteration 901 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:54,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:54,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1967295929, now seen corresponding path program 896 times [2021-05-22 02:04:54,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:54,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292343623] [2021-05-22 02:04:54,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:54,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:54,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292343623] [2021-05-22 02:04:54,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292343623] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:54,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:54,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:54,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650702530] [2021-05-22 02:04:54,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:54,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:54,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:54,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:54,244 INFO L87 Difference]: Start difference. First operand 5235 states and 24832 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:54,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:54,344 INFO L93 Difference]: Finished difference Result 11641 states and 52062 transitions. [2021-05-22 02:04:54,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:54,345 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:54,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:54,372 INFO L225 Difference]: With dead ends: 11641 [2021-05-22 02:04:54,373 INFO L226 Difference]: Without dead ends: 11019 [2021-05-22 02:04:54,373 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:54,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11019 states. [2021-05-22 02:04:54,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11019 to 5155. [2021-05-22 02:04:54,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.748156771439659) internal successors, (24472), 5154 states have internal predecessors, (24472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:54,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24472 transitions. [2021-05-22 02:04:54,613 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24472 transitions. Word has length 29 [2021-05-22 02:04:54,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:54,613 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24472 transitions. [2021-05-22 02:04:54,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:54,613 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24472 transitions. [2021-05-22 02:04:54,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:54,621 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:54,621 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:54,622 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable900 [2021-05-22 02:04:54,622 INFO L430 AbstractCegarLoop]: === Iteration 902 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:54,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:54,622 INFO L82 PathProgramCache]: Analyzing trace with hash 282607111, now seen corresponding path program 897 times [2021-05-22 02:04:54,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:54,622 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720641263] [2021-05-22 02:04:54,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:54,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:54,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720641263] [2021-05-22 02:04:54,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720641263] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:54,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:54,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:54,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992893552] [2021-05-22 02:04:54,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:54,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:54,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:54,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:54,723 INFO L87 Difference]: Start difference. First operand 5155 states and 24472 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:54,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:54,831 INFO L93 Difference]: Finished difference Result 11307 states and 50696 transitions. [2021-05-22 02:04:54,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:54,832 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:54,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:54,859 INFO L225 Difference]: With dead ends: 11307 [2021-05-22 02:04:54,859 INFO L226 Difference]: Without dead ends: 10892 [2021-05-22 02:04:54,860 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:54,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10892 states. [2021-05-22 02:04:55,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10892 to 5203. [2021-05-22 02:04:55,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.738177623990773) internal successors, (24648), 5202 states have internal predecessors, (24648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:55,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24648 transitions. [2021-05-22 02:04:55,100 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24648 transitions. Word has length 29 [2021-05-22 02:04:55,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:55,100 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24648 transitions. [2021-05-22 02:04:55,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:55,100 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24648 transitions. [2021-05-22 02:04:55,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:55,109 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:55,109 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:55,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable901 [2021-05-22 02:04:55,109 INFO L430 AbstractCegarLoop]: === Iteration 903 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:55,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:55,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1463417687, now seen corresponding path program 898 times [2021-05-22 02:04:55,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:55,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907901685] [2021-05-22 02:04:55,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:55,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:55,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:55,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907901685] [2021-05-22 02:04:55,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907901685] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:55,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:55,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:55,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876159351] [2021-05-22 02:04:55,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:55,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:55,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:55,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:55,225 INFO L87 Difference]: Start difference. First operand 5203 states and 24648 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:55,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:55,335 INFO L93 Difference]: Finished difference Result 11035 states and 49687 transitions. [2021-05-22 02:04:55,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:55,335 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:55,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:55,362 INFO L225 Difference]: With dead ends: 11035 [2021-05-22 02:04:55,362 INFO L226 Difference]: Without dead ends: 10524 [2021-05-22 02:04:55,362 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:55,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10524 states. [2021-05-22 02:04:55,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10524 to 5155. [2021-05-22 02:04:55,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.743500194024059) internal successors, (24448), 5154 states have internal predecessors, (24448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:55,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24448 transitions. [2021-05-22 02:04:55,602 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24448 transitions. Word has length 29 [2021-05-22 02:04:55,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:55,602 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24448 transitions. [2021-05-22 02:04:55,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:55,602 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24448 transitions. [2021-05-22 02:04:55,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:55,611 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:55,611 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:55,611 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable902 [2021-05-22 02:04:55,611 INFO L430 AbstractCegarLoop]: === Iteration 904 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:55,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:55,611 INFO L82 PathProgramCache]: Analyzing trace with hash -2068986711, now seen corresponding path program 899 times [2021-05-22 02:04:55,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:55,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400324504] [2021-05-22 02:04:55,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:55,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:55,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400324504] [2021-05-22 02:04:55,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400324504] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:55,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:55,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:55,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036181471] [2021-05-22 02:04:55,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:55,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:55,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:55,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:55,722 INFO L87 Difference]: Start difference. First operand 5155 states and 24448 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:55,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:55,823 INFO L93 Difference]: Finished difference Result 11490 states and 51467 transitions. [2021-05-22 02:04:55,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:55,823 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:55,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:55,851 INFO L225 Difference]: With dead ends: 11490 [2021-05-22 02:04:55,851 INFO L226 Difference]: Without dead ends: 10948 [2021-05-22 02:04:55,851 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:55,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10948 states. [2021-05-22 02:04:56,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10948 to 5259. [2021-05-22 02:04:56,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5259 states, 5258 states have (on average 4.7234689996196275) internal successors, (24836), 5258 states have internal predecessors, (24836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:56,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5259 states to 5259 states and 24836 transitions. [2021-05-22 02:04:56,103 INFO L78 Accepts]: Start accepts. Automaton has 5259 states and 24836 transitions. Word has length 29 [2021-05-22 02:04:56,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:56,103 INFO L482 AbstractCegarLoop]: Abstraction has 5259 states and 24836 transitions. [2021-05-22 02:04:56,103 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:56,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5259 states and 24836 transitions. [2021-05-22 02:04:56,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:56,113 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:56,113 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:56,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable903 [2021-05-22 02:04:56,113 INFO L430 AbstractCegarLoop]: === Iteration 905 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:56,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:56,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1507553913, now seen corresponding path program 900 times [2021-05-22 02:04:56,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:56,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164403140] [2021-05-22 02:04:56,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:56,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:56,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164403140] [2021-05-22 02:04:56,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164403140] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:56,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:56,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:56,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701899571] [2021-05-22 02:04:56,227 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:56,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:56,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:56,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:56,227 INFO L87 Difference]: Start difference. First operand 5259 states and 24836 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:56,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:56,352 INFO L93 Difference]: Finished difference Result 11091 states and 49875 transitions. [2021-05-22 02:04:56,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:56,352 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:56,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:56,379 INFO L225 Difference]: With dead ends: 11091 [2021-05-22 02:04:56,379 INFO L226 Difference]: Without dead ends: 10484 [2021-05-22 02:04:56,380 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:56,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10484 states. [2021-05-22 02:04:56,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10484 to 5115. [2021-05-22 02:04:56,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 4.7493156042237) internal successors, (24288), 5114 states have internal predecessors, (24288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:56,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 24288 transitions. [2021-05-22 02:04:56,621 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 24288 transitions. Word has length 29 [2021-05-22 02:04:56,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:56,621 INFO L482 AbstractCegarLoop]: Abstraction has 5115 states and 24288 transitions. [2021-05-22 02:04:56,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:56,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 24288 transitions. [2021-05-22 02:04:56,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:56,630 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:56,630 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:56,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable904 [2021-05-22 02:04:56,630 INFO L430 AbstractCegarLoop]: === Iteration 906 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:56,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:56,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1502303707, now seen corresponding path program 901 times [2021-05-22 02:04:56,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:56,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724820115] [2021-05-22 02:04:56,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:56,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:56,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724820115] [2021-05-22 02:04:56,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724820115] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:56,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:56,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:56,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449210161] [2021-05-22 02:04:56,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:56,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:56,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:56,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:56,788 INFO L87 Difference]: Start difference. First operand 5115 states and 24288 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:56,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:56,897 INFO L93 Difference]: Finished difference Result 11300 states and 50669 transitions. [2021-05-22 02:04:56,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:56,897 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:56,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:56,926 INFO L225 Difference]: With dead ends: 11300 [2021-05-22 02:04:56,926 INFO L226 Difference]: Without dead ends: 10885 [2021-05-22 02:04:56,926 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 177.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:57,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10885 states. [2021-05-22 02:04:57,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10885 to 5187. [2021-05-22 02:04:57,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.741226378711917) internal successors, (24588), 5186 states have internal predecessors, (24588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:57,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24588 transitions. [2021-05-22 02:04:57,170 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24588 transitions. Word has length 29 [2021-05-22 02:04:57,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:57,170 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24588 transitions. [2021-05-22 02:04:57,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:57,170 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24588 transitions. [2021-05-22 02:04:57,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:57,178 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:57,178 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:57,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable905 [2021-05-22 02:04:57,178 INFO L430 AbstractCegarLoop]: === Iteration 907 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:57,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:57,179 INFO L82 PathProgramCache]: Analyzing trace with hash -2016984633, now seen corresponding path program 902 times [2021-05-22 02:04:57,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:57,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078413390] [2021-05-22 02:04:57,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:57,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:57,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078413390] [2021-05-22 02:04:57,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078413390] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:57,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:57,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:57,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720023454] [2021-05-22 02:04:57,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:57,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:57,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:57,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:57,283 INFO L87 Difference]: Start difference. First operand 5187 states and 24588 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:57,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:57,401 INFO L93 Difference]: Finished difference Result 11360 states and 50885 transitions. [2021-05-22 02:04:57,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:57,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:57,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:57,430 INFO L225 Difference]: With dead ends: 11360 [2021-05-22 02:04:57,430 INFO L226 Difference]: Without dead ends: 10837 [2021-05-22 02:04:57,430 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:57,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10837 states. [2021-05-22 02:04:57,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10837 to 5139. [2021-05-22 02:04:57,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.746594005449591) internal successors, (24388), 5138 states have internal predecessors, (24388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:57,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24388 transitions. [2021-05-22 02:04:57,676 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24388 transitions. Word has length 29 [2021-05-22 02:04:57,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:57,676 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24388 transitions. [2021-05-22 02:04:57,676 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:57,676 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24388 transitions. [2021-05-22 02:04:57,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:57,685 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:57,685 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:57,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable906 [2021-05-22 02:04:57,685 INFO L430 AbstractCegarLoop]: === Iteration 908 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:57,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:57,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1618703879, now seen corresponding path program 903 times [2021-05-22 02:04:57,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:57,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727088440] [2021-05-22 02:04:57,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:57,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:57,777 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:57,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727088440] [2021-05-22 02:04:57,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727088440] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:57,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:57,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:57,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475626840] [2021-05-22 02:04:57,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:57,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:57,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:57,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:57,777 INFO L87 Difference]: Start difference. First operand 5139 states and 24388 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:57,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:57,891 INFO L93 Difference]: Finished difference Result 11192 states and 50205 transitions. [2021-05-22 02:04:57,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:57,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:57,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:57,919 INFO L225 Difference]: With dead ends: 11192 [2021-05-22 02:04:57,919 INFO L226 Difference]: Without dead ends: 10777 [2021-05-22 02:04:57,919 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:58,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10777 states. [2021-05-22 02:04:58,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10777 to 5187. [2021-05-22 02:04:58,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.736598534516005) internal successors, (24564), 5186 states have internal predecessors, (24564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:58,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24564 transitions. [2021-05-22 02:04:58,161 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24564 transitions. Word has length 29 [2021-05-22 02:04:58,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:58,162 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24564 transitions. [2021-05-22 02:04:58,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:58,162 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24564 transitions. [2021-05-22 02:04:58,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:58,171 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:58,171 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:58,171 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable907 [2021-05-22 02:04:58,171 INFO L430 AbstractCegarLoop]: === Iteration 909 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:58,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:58,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1416925383, now seen corresponding path program 904 times [2021-05-22 02:04:58,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:58,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510995107] [2021-05-22 02:04:58,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:58,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:58,263 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:58,263 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510995107] [2021-05-22 02:04:58,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510995107] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:58,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:58,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:58,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866363601] [2021-05-22 02:04:58,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:58,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:58,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:58,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:58,264 INFO L87 Difference]: Start difference. First operand 5187 states and 24564 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:58,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:58,374 INFO L93 Difference]: Finished difference Result 10920 states and 49196 transitions. [2021-05-22 02:04:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:58,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:58,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:58,402 INFO L225 Difference]: With dead ends: 10920 [2021-05-22 02:04:58,402 INFO L226 Difference]: Without dead ends: 10409 [2021-05-22 02:04:58,402 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:58,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10409 states. [2021-05-22 02:04:58,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10409 to 5139. [2021-05-22 02:04:58,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.741922927209031) internal successors, (24364), 5138 states have internal predecessors, (24364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:58,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24364 transitions. [2021-05-22 02:04:58,642 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24364 transitions. Word has length 29 [2021-05-22 02:04:58,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:58,643 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24364 transitions. [2021-05-22 02:04:58,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:58,643 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24364 transitions. [2021-05-22 02:04:58,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:58,651 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:58,651 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:58,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable908 [2021-05-22 02:04:58,651 INFO L430 AbstractCegarLoop]: === Iteration 910 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:58,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:58,651 INFO L82 PathProgramCache]: Analyzing trace with hash -614602775, now seen corresponding path program 905 times [2021-05-22 02:04:58,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:58,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592323377] [2021-05-22 02:04:58,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:58,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:58,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:58,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592323377] [2021-05-22 02:04:58,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592323377] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:58,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:58,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:58,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475112424] [2021-05-22 02:04:58,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:58,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:58,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:58,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:58,744 INFO L87 Difference]: Start difference. First operand 5139 states and 24364 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:58,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:58,868 INFO L93 Difference]: Finished difference Result 11276 states and 50569 transitions. [2021-05-22 02:04:58,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:58,869 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:58,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:58,896 INFO L225 Difference]: With dead ends: 11276 [2021-05-22 02:04:58,896 INFO L226 Difference]: Without dead ends: 10801 [2021-05-22 02:04:58,897 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:59,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10801 states. [2021-05-22 02:04:59,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10801 to 5211. [2021-05-22 02:04:59,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5211 states, 5210 states have (on average 4.72936660268714) internal successors, (24640), 5210 states have internal predecessors, (24640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:59,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5211 states to 5211 states and 24640 transitions. [2021-05-22 02:04:59,140 INFO L78 Accepts]: Start accepts. Automaton has 5211 states and 24640 transitions. Word has length 29 [2021-05-22 02:04:59,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:59,140 INFO L482 AbstractCegarLoop]: Abstraction has 5211 states and 24640 transitions. [2021-05-22 02:04:59,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:59,140 INFO L276 IsEmpty]: Start isEmpty. Operand 5211 states and 24640 transitions. [2021-05-22 02:04:59,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:59,149 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:59,149 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:59,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable909 [2021-05-22 02:04:59,149 INFO L430 AbstractCegarLoop]: === Iteration 911 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:59,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:59,149 INFO L82 PathProgramCache]: Analyzing trace with hash -2006747321, now seen corresponding path program 906 times [2021-05-22 02:04:59,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:59,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422454681] [2021-05-22 02:04:59,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:59,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:59,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:59,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422454681] [2021-05-22 02:04:59,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422454681] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:59,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:59,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:59,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427757999] [2021-05-22 02:04:59,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:59,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:59,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:59,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:59,241 INFO L87 Difference]: Start difference. First operand 5211 states and 24640 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:59,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:59,368 INFO L93 Difference]: Finished difference Result 10944 states and 49272 transitions. [2021-05-22 02:04:59,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:59,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:59,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:59,396 INFO L225 Difference]: With dead ends: 10944 [2021-05-22 02:04:59,396 INFO L226 Difference]: Without dead ends: 10385 [2021-05-22 02:04:59,396 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:04:59,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10385 states. [2021-05-22 02:04:59,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10385 to 5115. [2021-05-22 02:04:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 4.746969104419241) internal successors, (24276), 5114 states have internal predecessors, (24276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:59,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 24276 transitions. [2021-05-22 02:04:59,634 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 24276 transitions. Word has length 29 [2021-05-22 02:04:59,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:04:59,634 INFO L482 AbstractCegarLoop]: Abstraction has 5115 states and 24276 transitions. [2021-05-22 02:04:59,634 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:59,634 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 24276 transitions. [2021-05-22 02:04:59,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:04:59,643 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:04:59,643 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:04:59,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable910 [2021-05-22 02:04:59,643 INFO L430 AbstractCegarLoop]: === Iteration 912 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:04:59,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:04:59,643 INFO L82 PathProgramCache]: Analyzing trace with hash -467478551, now seen corresponding path program 907 times [2021-05-22 02:04:59,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:04:59,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877223455] [2021-05-22 02:04:59,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:04:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:04:59,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:04:59,738 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:04:59,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877223455] [2021-05-22 02:04:59,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877223455] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:04:59,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:04:59,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:04:59,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885625012] [2021-05-22 02:04:59,738 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:04:59,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:04:59,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:04:59,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:04:59,739 INFO L87 Difference]: Start difference. First operand 5115 states and 24276 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:04:59,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:04:59,850 INFO L93 Difference]: Finished difference Result 11827 states and 52945 transitions. [2021-05-22 02:04:59,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:04:59,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:04:59,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:04:59,880 INFO L225 Difference]: With dead ends: 11827 [2021-05-22 02:04:59,880 INFO L226 Difference]: Without dead ends: 11285 [2021-05-22 02:04:59,880 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 102.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:00,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11285 states. [2021-05-22 02:05:00,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11285 to 5277. [2021-05-22 02:05:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5277 states, 5276 states have (on average 4.7295299469294925) internal successors, (24953), 5276 states have internal predecessors, (24953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:00,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 24953 transitions. [2021-05-22 02:05:00,124 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 24953 transitions. Word has length 29 [2021-05-22 02:05:00,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:00,124 INFO L482 AbstractCegarLoop]: Abstraction has 5277 states and 24953 transitions. [2021-05-22 02:05:00,124 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:00,124 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 24953 transitions. [2021-05-22 02:05:00,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:00,132 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:00,132 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:00,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable911 [2021-05-22 02:05:00,133 INFO L430 AbstractCegarLoop]: === Iteration 913 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:00,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:00,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1208430649, now seen corresponding path program 908 times [2021-05-22 02:05:00,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:00,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744837259] [2021-05-22 02:05:00,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:00,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:00,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744837259] [2021-05-22 02:05:00,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744837259] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:00,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:00,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:00,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115444607] [2021-05-22 02:05:00,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:00,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:00,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:00,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:00,225 INFO L87 Difference]: Start difference. First operand 5277 states and 24953 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:00,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:00,332 INFO L93 Difference]: Finished difference Result 11760 states and 52572 transitions. [2021-05-22 02:05:00,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:00,332 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:00,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:00,361 INFO L225 Difference]: With dead ends: 11760 [2021-05-22 02:05:00,361 INFO L226 Difference]: Without dead ends: 11175 [2021-05-22 02:05:00,361 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:00,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11175 states. [2021-05-22 02:05:00,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11175 to 5167. [2021-05-22 02:05:00,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.741773132017035) internal successors, (24496), 5166 states have internal predecessors, (24496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:00,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24496 transitions. [2021-05-22 02:05:00,608 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24496 transitions. Word has length 29 [2021-05-22 02:05:00,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:00,609 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24496 transitions. [2021-05-22 02:05:00,609 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:00,609 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24496 transitions. [2021-05-22 02:05:00,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:00,618 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:00,618 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:00,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable912 [2021-05-22 02:05:00,618 INFO L430 AbstractCegarLoop]: === Iteration 914 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:00,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:00,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1711409095, now seen corresponding path program 909 times [2021-05-22 02:05:00,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:00,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463540716] [2021-05-22 02:05:00,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:00,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:00,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:00,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463540716] [2021-05-22 02:05:00,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463540716] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:00,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:00,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:00,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164302494] [2021-05-22 02:05:00,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:00,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:00,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:00,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:00,722 INFO L87 Difference]: Start difference. First operand 5167 states and 24496 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:00,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:00,814 INFO L93 Difference]: Finished difference Result 11586 states and 51903 transitions. [2021-05-22 02:05:00,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:00,814 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:00,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:00,843 INFO L225 Difference]: With dead ends: 11586 [2021-05-22 02:05:00,843 INFO L226 Difference]: Without dead ends: 11044 [2021-05-22 02:05:00,843 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 110.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:00,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11044 states. [2021-05-22 02:05:01,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11044 to 5271. [2021-05-22 02:05:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5271 states, 5270 states have (on average 4.721821631878558) internal successors, (24884), 5270 states have internal predecessors, (24884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:01,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5271 states to 5271 states and 24884 transitions. [2021-05-22 02:05:01,085 INFO L78 Accepts]: Start accepts. Automaton has 5271 states and 24884 transitions. Word has length 29 [2021-05-22 02:05:01,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:01,085 INFO L482 AbstractCegarLoop]: Abstraction has 5271 states and 24884 transitions. [2021-05-22 02:05:01,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:01,085 INFO L276 IsEmpty]: Start isEmpty. Operand 5271 states and 24884 transitions. [2021-05-22 02:05:01,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:01,094 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:01,094 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:01,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable913 [2021-05-22 02:05:01,094 INFO L430 AbstractCegarLoop]: === Iteration 915 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:01,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:01,094 INFO L82 PathProgramCache]: Analyzing trace with hash -725385017, now seen corresponding path program 910 times [2021-05-22 02:05:01,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:01,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661612347] [2021-05-22 02:05:01,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:01,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:01,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661612347] [2021-05-22 02:05:01,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661612347] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:01,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:01,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:01,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310763616] [2021-05-22 02:05:01,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:01,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:01,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:01,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:01,198 INFO L87 Difference]: Start difference. First operand 5271 states and 24884 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:01,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:01,307 INFO L93 Difference]: Finished difference Result 11187 states and 50311 transitions. [2021-05-22 02:05:01,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:01,307 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:01,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:01,335 INFO L225 Difference]: With dead ends: 11187 [2021-05-22 02:05:01,335 INFO L226 Difference]: Without dead ends: 10620 [2021-05-22 02:05:01,335 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:01,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10620 states. [2021-05-22 02:05:01,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10620 to 5167. [2021-05-22 02:05:01,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.7317073170731705) internal successors, (24444), 5166 states have internal predecessors, (24444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:01,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24444 transitions. [2021-05-22 02:05:01,574 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24444 transitions. Word has length 29 [2021-05-22 02:05:01,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:01,574 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24444 transitions. [2021-05-22 02:05:01,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:01,574 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24444 transitions. [2021-05-22 02:05:01,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:01,582 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:01,582 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:01,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable914 [2021-05-22 02:05:01,583 INFO L430 AbstractCegarLoop]: === Iteration 916 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:01,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:01,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1457576229, now seen corresponding path program 911 times [2021-05-22 02:05:01,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:01,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466259903] [2021-05-22 02:05:01,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:01,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:01,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466259903] [2021-05-22 02:05:01,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466259903] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:01,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:01,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:01,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795494441] [2021-05-22 02:05:01,677 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:01,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:01,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:01,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:01,677 INFO L87 Difference]: Start difference. First operand 5167 states and 24444 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:01,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:01,790 INFO L93 Difference]: Finished difference Result 11487 states and 51444 transitions. [2021-05-22 02:05:01,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:01,791 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:01,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:01,819 INFO L225 Difference]: With dead ends: 11487 [2021-05-22 02:05:01,819 INFO L226 Difference]: Without dead ends: 11012 [2021-05-22 02:05:01,819 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:01,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11012 states. [2021-05-22 02:05:02,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11012 to 5239. [2021-05-22 02:05:02,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5239 states, 5238 states have (on average 4.719358533791524) internal successors, (24720), 5238 states have internal predecessors, (24720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:02,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5239 states to 5239 states and 24720 transitions. [2021-05-22 02:05:02,066 INFO L78 Accepts]: Start accepts. Automaton has 5239 states and 24720 transitions. Word has length 29 [2021-05-22 02:05:02,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:02,066 INFO L482 AbstractCegarLoop]: Abstraction has 5239 states and 24720 transitions. [2021-05-22 02:05:02,066 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:02,066 INFO L276 IsEmpty]: Start isEmpty. Operand 5239 states and 24720 transitions. [2021-05-22 02:05:02,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:02,075 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:02,075 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:02,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable915 [2021-05-22 02:05:02,075 INFO L430 AbstractCegarLoop]: === Iteration 917 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:02,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:02,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1250768263, now seen corresponding path program 912 times [2021-05-22 02:05:02,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:02,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560698023] [2021-05-22 02:05:02,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:02,169 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:02,169 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560698023] [2021-05-22 02:05:02,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560698023] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:02,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:02,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:02,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188399104] [2021-05-22 02:05:02,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:02,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:02,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:02,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:02,170 INFO L87 Difference]: Start difference. First operand 5239 states and 24720 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:02,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:02,282 INFO L93 Difference]: Finished difference Result 11155 states and 50147 transitions. [2021-05-22 02:05:02,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:02,282 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:02,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:02,311 INFO L225 Difference]: With dead ends: 11155 [2021-05-22 02:05:02,311 INFO L226 Difference]: Without dead ends: 10548 [2021-05-22 02:05:02,311 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:02,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10548 states. [2021-05-22 02:05:02,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10548 to 5095. [2021-05-22 02:05:02,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5095 states, 5094 states have (on average 4.751864939144091) internal successors, (24206), 5094 states have internal predecessors, (24206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:02,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 24206 transitions. [2021-05-22 02:05:02,553 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 24206 transitions. Word has length 29 [2021-05-22 02:05:02,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:02,553 INFO L482 AbstractCegarLoop]: Abstraction has 5095 states and 24206 transitions. [2021-05-22 02:05:02,553 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 24206 transitions. [2021-05-22 02:05:02,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:02,562 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:02,562 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:02,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable916 [2021-05-22 02:05:02,562 INFO L430 AbstractCegarLoop]: === Iteration 918 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:02,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:02,562 INFO L82 PathProgramCache]: Analyzing trace with hash 810606885, now seen corresponding path program 913 times [2021-05-22 02:05:02,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:02,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907372382] [2021-05-22 02:05:02,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:02,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:02,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:02,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907372382] [2021-05-22 02:05:02,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907372382] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:02,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:02,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:02,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319709662] [2021-05-22 02:05:02,677 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:02,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:02,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:02,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:02,678 INFO L87 Difference]: Start difference. First operand 5095 states and 24206 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:02,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:02,792 INFO L93 Difference]: Finished difference Result 11169 states and 50102 transitions. [2021-05-22 02:05:02,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:02,792 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:02,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:02,820 INFO L225 Difference]: With dead ends: 11169 [2021-05-22 02:05:02,820 INFO L226 Difference]: Without dead ends: 10754 [2021-05-22 02:05:02,821 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:02,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10754 states. [2021-05-22 02:05:03,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10754 to 5179. [2021-05-22 02:05:03,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.745847817690228) internal successors, (24574), 5178 states have internal predecessors, (24574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:03,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24574 transitions. [2021-05-22 02:05:03,063 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24574 transitions. Word has length 29 [2021-05-22 02:05:03,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:03,063 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24574 transitions. [2021-05-22 02:05:03,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:03,063 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24574 transitions. [2021-05-22 02:05:03,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:03,071 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:03,071 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:03,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable917 [2021-05-22 02:05:03,071 INFO L430 AbstractCegarLoop]: === Iteration 919 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:03,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:03,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1527269831, now seen corresponding path program 914 times [2021-05-22 02:05:03,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:03,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141458073] [2021-05-22 02:05:03,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:03,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:03,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:03,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141458073] [2021-05-22 02:05:03,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141458073] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:03,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:03,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:03,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808208045] [2021-05-22 02:05:03,184 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:03,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:03,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:03,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:03,184 INFO L87 Difference]: Start difference. First operand 5179 states and 24574 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:03,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:03,292 INFO L93 Difference]: Finished difference Result 11231 states and 50323 transitions. [2021-05-22 02:05:03,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:03,292 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:03,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:03,319 INFO L225 Difference]: With dead ends: 11231 [2021-05-22 02:05:03,319 INFO L226 Difference]: Without dead ends: 10706 [2021-05-22 02:05:03,319 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:03,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10706 states. [2021-05-22 02:05:03,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10706 to 5131. [2021-05-22 02:05:03,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.751267056530215) internal successors, (24374), 5130 states have internal predecessors, (24374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:03,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24374 transitions. [2021-05-22 02:05:03,563 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24374 transitions. Word has length 29 [2021-05-22 02:05:03,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:03,563 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24374 transitions. [2021-05-22 02:05:03,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:03,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24374 transitions. [2021-05-22 02:05:03,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:03,572 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:03,572 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:03,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable918 [2021-05-22 02:05:03,572 INFO L430 AbstractCegarLoop]: === Iteration 920 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:03,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:03,572 INFO L82 PathProgramCache]: Analyzing trace with hash -363352825, now seen corresponding path program 915 times [2021-05-22 02:05:03,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:03,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774864837] [2021-05-22 02:05:03,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:03,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:03,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774864837] [2021-05-22 02:05:03,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774864837] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:03,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:03,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:03,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129938110] [2021-05-22 02:05:03,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:03,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:03,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:03,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:03,688 INFO L87 Difference]: Start difference. First operand 5131 states and 24374 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:03,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:03,799 INFO L93 Difference]: Finished difference Result 11167 states and 50073 transitions. [2021-05-22 02:05:03,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:03,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:03,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:03,827 INFO L225 Difference]: With dead ends: 11167 [2021-05-22 02:05:03,827 INFO L226 Difference]: Without dead ends: 10752 [2021-05-22 02:05:03,827 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:03,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10752 states. [2021-05-22 02:05:04,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10752 to 5179. [2021-05-22 02:05:04,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.741212823483971) internal successors, (24550), 5178 states have internal predecessors, (24550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:04,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24550 transitions. [2021-05-22 02:05:04,071 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24550 transitions. Word has length 29 [2021-05-22 02:05:04,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:04,071 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24550 transitions. [2021-05-22 02:05:04,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:04,071 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24550 transitions. [2021-05-22 02:05:04,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:04,080 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:04,080 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:04,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable919 [2021-05-22 02:05:04,080 INFO L430 AbstractCegarLoop]: === Iteration 921 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:04,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:04,080 INFO L82 PathProgramCache]: Analyzing trace with hash 666212551, now seen corresponding path program 916 times [2021-05-22 02:05:04,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:04,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454476896] [2021-05-22 02:05:04,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:04,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:04,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:04,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454476896] [2021-05-22 02:05:04,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454476896] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:04,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:04,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:04,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987337057] [2021-05-22 02:05:04,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:04,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:04,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:04,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:04,197 INFO L87 Difference]: Start difference. First operand 5179 states and 24550 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:04,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:04,307 INFO L93 Difference]: Finished difference Result 11227 states and 50289 transitions. [2021-05-22 02:05:04,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:04,308 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:04,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:04,336 INFO L225 Difference]: With dead ends: 11227 [2021-05-22 02:05:04,336 INFO L226 Difference]: Without dead ends: 10704 [2021-05-22 02:05:04,336 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:04,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10704 states. [2021-05-22 02:05:04,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10704 to 5131. [2021-05-22 02:05:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.746588693957115) internal successors, (24350), 5130 states have internal predecessors, (24350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:04,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24350 transitions. [2021-05-22 02:05:04,585 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24350 transitions. Word has length 29 [2021-05-22 02:05:04,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:04,585 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24350 transitions. [2021-05-22 02:05:04,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:04,585 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24350 transitions. [2021-05-22 02:05:04,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:04,594 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:04,594 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:04,594 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable920 [2021-05-22 02:05:04,594 INFO L430 AbstractCegarLoop]: === Iteration 922 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:04,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:04,594 INFO L82 PathProgramCache]: Analyzing trace with hash 840138985, now seen corresponding path program 917 times [2021-05-22 02:05:04,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:04,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266762784] [2021-05-22 02:05:04,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:04,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:04,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:04,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266762784] [2021-05-22 02:05:04,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266762784] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:04,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:04,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:04,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134502688] [2021-05-22 02:05:04,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:04,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:04,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:04,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:04,706 INFO L87 Difference]: Start difference. First operand 5131 states and 24350 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:04,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:04,834 INFO L93 Difference]: Finished difference Result 11321 states and 50734 transitions. [2021-05-22 02:05:04,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:04,834 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:04,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:04,861 INFO L225 Difference]: With dead ends: 11321 [2021-05-22 02:05:04,862 INFO L226 Difference]: Without dead ends: 10844 [2021-05-22 02:05:04,862 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:04,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10844 states. [2021-05-22 02:05:05,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10844 to 5209. [2021-05-22 02:05:05,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.731758832565284) internal successors, (24643), 5208 states have internal predecessors, (24643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:05,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24643 transitions. [2021-05-22 02:05:05,103 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24643 transitions. Word has length 29 [2021-05-22 02:05:05,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:05,103 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24643 transitions. [2021-05-22 02:05:05,103 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:05,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24643 transitions. [2021-05-22 02:05:05,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:05,112 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:05,112 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:05,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable921 [2021-05-22 02:05:05,112 INFO L430 AbstractCegarLoop]: === Iteration 923 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:05,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:05,112 INFO L82 PathProgramCache]: Analyzing trace with hash -552005561, now seen corresponding path program 918 times [2021-05-22 02:05:05,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:05,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590652323] [2021-05-22 02:05:05,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:05,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:05,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:05,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590652323] [2021-05-22 02:05:05,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590652323] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:05,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:05,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:05,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824503792] [2021-05-22 02:05:05,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:05,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:05,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:05,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:05,234 INFO L87 Difference]: Start difference. First operand 5209 states and 24643 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:05,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:05,366 INFO L93 Difference]: Finished difference Result 11319 states and 50651 transitions. [2021-05-22 02:05:05,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:05,366 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:05,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:05,394 INFO L225 Difference]: With dead ends: 11319 [2021-05-22 02:05:05,394 INFO L226 Difference]: Without dead ends: 10742 [2021-05-22 02:05:05,395 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:05,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10742 states. [2021-05-22 02:05:05,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10742 to 5107. [2021-05-22 02:05:05,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5107 states, 5106 states have (on average 4.751664708186447) internal successors, (24262), 5106 states have internal predecessors, (24262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:05,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 24262 transitions. [2021-05-22 02:05:05,637 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 24262 transitions. Word has length 29 [2021-05-22 02:05:05,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:05,637 INFO L482 AbstractCegarLoop]: Abstraction has 5107 states and 24262 transitions. [2021-05-22 02:05:05,637 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:05,637 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 24262 transitions. [2021-05-22 02:05:05,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:05,646 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:05,646 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:05,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable922 [2021-05-22 02:05:05,646 INFO L430 AbstractCegarLoop]: === Iteration 924 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:05,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:05,646 INFO L82 PathProgramCache]: Analyzing trace with hash -2083242873, now seen corresponding path program 919 times [2021-05-22 02:05:05,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:05,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141864578] [2021-05-22 02:05:05,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:05,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:05,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141864578] [2021-05-22 02:05:05,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141864578] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:05,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:05,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:05,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929628080] [2021-05-22 02:05:05,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:05,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:05,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:05,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:05,758 INFO L87 Difference]: Start difference. First operand 5107 states and 24262 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:05,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:05,872 INFO L93 Difference]: Finished difference Result 11103 states and 49803 transitions. [2021-05-22 02:05:05,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:05,872 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:05,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:05,899 INFO L225 Difference]: With dead ends: 11103 [2021-05-22 02:05:05,900 INFO L226 Difference]: Without dead ends: 10688 [2021-05-22 02:05:05,900 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:06,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10688 states. [2021-05-22 02:05:06,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10688 to 5179. [2021-05-22 02:05:06,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.743530320587099) internal successors, (24562), 5178 states have internal predecessors, (24562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:06,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24562 transitions. [2021-05-22 02:05:06,139 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24562 transitions. Word has length 29 [2021-05-22 02:05:06,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:06,139 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24562 transitions. [2021-05-22 02:05:06,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:06,139 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24562 transitions. [2021-05-22 02:05:06,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:06,147 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:06,147 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:06,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable923 [2021-05-22 02:05:06,148 INFO L430 AbstractCegarLoop]: === Iteration 925 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:06,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:06,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1366579927, now seen corresponding path program 920 times [2021-05-22 02:05:06,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:06,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208772759] [2021-05-22 02:05:06,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:06,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:06,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208772759] [2021-05-22 02:05:06,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208772759] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:06,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:06,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:06,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61230117] [2021-05-22 02:05:06,259 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:06,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:06,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:06,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:06,259 INFO L87 Difference]: Start difference. First operand 5179 states and 24562 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:06,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:06,375 INFO L93 Difference]: Finished difference Result 11165 states and 50024 transitions. [2021-05-22 02:05:06,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:06,375 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:06,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:06,404 INFO L225 Difference]: With dead ends: 11165 [2021-05-22 02:05:06,405 INFO L226 Difference]: Without dead ends: 10640 [2021-05-22 02:05:06,405 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:06,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10640 states. [2021-05-22 02:05:06,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10640 to 5131. [2021-05-22 02:05:06,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.748927875243664) internal successors, (24362), 5130 states have internal predecessors, (24362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:06,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24362 transitions. [2021-05-22 02:05:06,647 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24362 transitions. Word has length 29 [2021-05-22 02:05:06,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:06,647 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24362 transitions. [2021-05-22 02:05:06,647 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:06,647 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24362 transitions. [2021-05-22 02:05:06,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:06,656 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:06,656 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:06,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable924 [2021-05-22 02:05:06,656 INFO L430 AbstractCegarLoop]: === Iteration 926 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:06,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:06,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1908628487, now seen corresponding path program 921 times [2021-05-22 02:05:06,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:06,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425773676] [2021-05-22 02:05:06,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:06,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:06,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:06,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425773676] [2021-05-22 02:05:06,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425773676] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:06,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:06,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:06,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038002956] [2021-05-22 02:05:06,759 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:06,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:06,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:06,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:06,759 INFO L87 Difference]: Start difference. First operand 5131 states and 24362 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:06,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:06,873 INFO L93 Difference]: Finished difference Result 10993 states and 49334 transitions. [2021-05-22 02:05:06,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:06,874 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:06,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:06,901 INFO L225 Difference]: With dead ends: 10993 [2021-05-22 02:05:06,901 INFO L226 Difference]: Without dead ends: 10578 [2021-05-22 02:05:06,902 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:07,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10578 states. [2021-05-22 02:05:07,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10578 to 5179. [2021-05-22 02:05:07,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.738895326380842) internal successors, (24538), 5178 states have internal predecessors, (24538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:07,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24538 transitions. [2021-05-22 02:05:07,188 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24538 transitions. Word has length 29 [2021-05-22 02:05:07,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:07,188 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24538 transitions. [2021-05-22 02:05:07,188 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:07,188 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24538 transitions. [2021-05-22 02:05:07,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:07,197 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:07,197 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:07,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable925 [2021-05-22 02:05:07,197 INFO L430 AbstractCegarLoop]: === Iteration 927 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:07,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:07,197 INFO L82 PathProgramCache]: Analyzing trace with hash -831715385, now seen corresponding path program 922 times [2021-05-22 02:05:07,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:07,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871570941] [2021-05-22 02:05:07,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:07,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:07,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:07,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871570941] [2021-05-22 02:05:07,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871570941] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:07,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:07,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:07,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47798156] [2021-05-22 02:05:07,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:07,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:07,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:07,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:07,298 INFO L87 Difference]: Start difference. First operand 5179 states and 24538 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:07,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:07,406 INFO L93 Difference]: Finished difference Result 10721 states and 48325 transitions. [2021-05-22 02:05:07,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:07,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:07,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:07,433 INFO L225 Difference]: With dead ends: 10721 [2021-05-22 02:05:07,433 INFO L226 Difference]: Without dead ends: 10210 [2021-05-22 02:05:07,433 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:07,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10210 states. [2021-05-22 02:05:07,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10210 to 5131. [2021-05-22 02:05:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.7442495126705655) internal successors, (24338), 5130 states have internal predecessors, (24338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:07,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24338 transitions. [2021-05-22 02:05:07,671 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24338 transitions. Word has length 29 [2021-05-22 02:05:07,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:07,671 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24338 transitions. [2021-05-22 02:05:07,671 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:07,671 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24338 transitions. [2021-05-22 02:05:07,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:07,679 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:07,680 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:07,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable926 [2021-05-22 02:05:07,680 INFO L430 AbstractCegarLoop]: === Iteration 928 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:07,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:07,680 INFO L82 PathProgramCache]: Analyzing trace with hash -2002186263, now seen corresponding path program 923 times [2021-05-22 02:05:07,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:07,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014755425] [2021-05-22 02:05:07,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:07,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:07,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014755425] [2021-05-22 02:05:07,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014755425] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:07,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:07,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:07,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559917280] [2021-05-22 02:05:07,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:07,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:07,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:07,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:07,807 INFO L87 Difference]: Start difference. First operand 5131 states and 24338 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:07,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:07,929 INFO L93 Difference]: Finished difference Result 11079 states and 49703 transitions. [2021-05-22 02:05:07,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:07,929 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:07,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:07,957 INFO L225 Difference]: With dead ends: 11079 [2021-05-22 02:05:07,957 INFO L226 Difference]: Without dead ends: 10602 [2021-05-22 02:05:07,957 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:08,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10602 states. [2021-05-22 02:05:08,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10602 to 5203. [2021-05-22 02:05:08,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.731641676278355) internal successors, (24614), 5202 states have internal predecessors, (24614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:08,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24614 transitions. [2021-05-22 02:05:08,203 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24614 transitions. Word has length 29 [2021-05-22 02:05:08,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:08,204 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24614 transitions. [2021-05-22 02:05:08,204 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:08,204 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24614 transitions. [2021-05-22 02:05:08,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:08,213 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:08,213 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:08,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable927 [2021-05-22 02:05:08,213 INFO L430 AbstractCegarLoop]: === Iteration 929 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:08,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:08,213 INFO L82 PathProgramCache]: Analyzing trace with hash -2091945913, now seen corresponding path program 924 times [2021-05-22 02:05:08,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:08,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083284181] [2021-05-22 02:05:08,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:08,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:08,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:08,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083284181] [2021-05-22 02:05:08,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083284181] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:08,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:08,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:08,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083228413] [2021-05-22 02:05:08,324 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:08,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:08,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:08,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:08,324 INFO L87 Difference]: Start difference. First operand 5203 states and 24614 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:08,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:08,435 INFO L93 Difference]: Finished difference Result 10745 states and 48401 transitions. [2021-05-22 02:05:08,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:08,435 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:08,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:08,463 INFO L225 Difference]: With dead ends: 10745 [2021-05-22 02:05:08,463 INFO L226 Difference]: Without dead ends: 10186 [2021-05-22 02:05:08,464 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:08,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10186 states. [2021-05-22 02:05:08,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10186 to 5107. [2021-05-22 02:05:08,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5107 states, 5106 states have (on average 4.749314531923227) internal successors, (24250), 5106 states have internal predecessors, (24250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:08,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 24250 transitions. [2021-05-22 02:05:08,711 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 24250 transitions. Word has length 29 [2021-05-22 02:05:08,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:08,711 INFO L482 AbstractCegarLoop]: Abstraction has 5107 states and 24250 transitions. [2021-05-22 02:05:08,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:08,712 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 24250 transitions. [2021-05-22 02:05:08,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:08,721 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:08,721 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:08,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable928 [2021-05-22 02:05:08,721 INFO L430 AbstractCegarLoop]: === Iteration 930 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:08,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:08,721 INFO L82 PathProgramCache]: Analyzing trace with hash 420796265, now seen corresponding path program 925 times [2021-05-22 02:05:08,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:08,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520231382] [2021-05-22 02:05:08,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:08,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:08,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520231382] [2021-05-22 02:05:08,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520231382] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:08,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:08,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:08,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199977525] [2021-05-22 02:05:08,828 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:08,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:08,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:08,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:08,829 INFO L87 Difference]: Start difference. First operand 5107 states and 24250 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:08,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:08,942 INFO L93 Difference]: Finished difference Result 11099 states and 49781 transitions. [2021-05-22 02:05:08,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:08,942 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:08,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:08,970 INFO L225 Difference]: With dead ends: 11099 [2021-05-22 02:05:08,970 INFO L226 Difference]: Without dead ends: 10684 [2021-05-22 02:05:08,970 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:09,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10684 states. [2021-05-22 02:05:09,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10684 to 5179. [2021-05-22 02:05:09,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.741212823483971) internal successors, (24550), 5178 states have internal predecessors, (24550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24550 transitions. [2021-05-22 02:05:09,215 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24550 transitions. Word has length 29 [2021-05-22 02:05:09,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:09,215 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24550 transitions. [2021-05-22 02:05:09,215 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:09,215 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24550 transitions. [2021-05-22 02:05:09,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:09,224 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:09,224 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:09,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable929 [2021-05-22 02:05:09,224 INFO L430 AbstractCegarLoop]: === Iteration 931 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:09,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:09,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1450361641, now seen corresponding path program 926 times [2021-05-22 02:05:09,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:09,224 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492625845] [2021-05-22 02:05:09,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:09,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:09,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:09,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492625845] [2021-05-22 02:05:09,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492625845] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:09,329 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:09,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:09,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862560721] [2021-05-22 02:05:09,329 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:09,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:09,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:09,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:09,329 INFO L87 Difference]: Start difference. First operand 5179 states and 24550 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:09,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:09,441 INFO L93 Difference]: Finished difference Result 11159 states and 49997 transitions. [2021-05-22 02:05:09,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:09,442 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:09,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:09,469 INFO L225 Difference]: With dead ends: 11159 [2021-05-22 02:05:09,469 INFO L226 Difference]: Without dead ends: 10636 [2021-05-22 02:05:09,469 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:09,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10636 states. [2021-05-22 02:05:09,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10636 to 5131. [2021-05-22 02:05:09,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.746588693957115) internal successors, (24350), 5130 states have internal predecessors, (24350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:09,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24350 transitions. [2021-05-22 02:05:09,710 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24350 transitions. Word has length 29 [2021-05-22 02:05:09,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:09,711 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24350 transitions. [2021-05-22 02:05:09,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:09,711 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24350 transitions. [2021-05-22 02:05:09,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:09,719 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:09,719 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:09,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable930 [2021-05-22 02:05:09,719 INFO L430 AbstractCegarLoop]: === Iteration 932 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:09,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:09,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1612216377, now seen corresponding path program 927 times [2021-05-22 02:05:09,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:09,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786033719] [2021-05-22 02:05:09,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:09,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:09,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786033719] [2021-05-22 02:05:09,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786033719] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:09,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:09,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:09,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998868037] [2021-05-22 02:05:09,813 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:09,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:09,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:09,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:09,813 INFO L87 Difference]: Start difference. First operand 5131 states and 24350 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:09,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:09,926 INFO L93 Difference]: Finished difference Result 10991 states and 49317 transitions. [2021-05-22 02:05:09,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:09,927 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:09,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:09,954 INFO L225 Difference]: With dead ends: 10991 [2021-05-22 02:05:09,954 INFO L226 Difference]: Without dead ends: 10576 [2021-05-22 02:05:09,955 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:10,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10576 states. [2021-05-22 02:05:10,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10576 to 5179. [2021-05-22 02:05:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.736577829277714) internal successors, (24526), 5178 states have internal predecessors, (24526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:10,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24526 transitions. [2021-05-22 02:05:10,192 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24526 transitions. Word has length 29 [2021-05-22 02:05:10,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:10,192 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24526 transitions. [2021-05-22 02:05:10,192 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:10,192 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24526 transitions. [2021-05-22 02:05:10,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:10,201 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:10,201 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:10,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable931 [2021-05-22 02:05:10,201 INFO L430 AbstractCegarLoop]: === Iteration 933 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:10,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:10,201 INFO L82 PathProgramCache]: Analyzing trace with hash 569402153, now seen corresponding path program 928 times [2021-05-22 02:05:10,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:10,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582028382] [2021-05-22 02:05:10,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:10,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:10,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582028382] [2021-05-22 02:05:10,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582028382] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:10,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:10,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:10,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323587830] [2021-05-22 02:05:10,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:10,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:10,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:10,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:10,295 INFO L87 Difference]: Start difference. First operand 5179 states and 24526 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:10,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:10,405 INFO L93 Difference]: Finished difference Result 10719 states and 48308 transitions. [2021-05-22 02:05:10,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:10,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:10,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:10,431 INFO L225 Difference]: With dead ends: 10719 [2021-05-22 02:05:10,432 INFO L226 Difference]: Without dead ends: 10208 [2021-05-22 02:05:10,432 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:10,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10208 states. [2021-05-22 02:05:10,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10208 to 5131. [2021-05-22 02:05:10,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.741910331384015) internal successors, (24326), 5130 states have internal predecessors, (24326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:10,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24326 transitions. [2021-05-22 02:05:10,667 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24326 transitions. Word has length 29 [2021-05-22 02:05:10,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:10,667 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24326 transitions. [2021-05-22 02:05:10,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:10,667 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24326 transitions. [2021-05-22 02:05:10,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:10,676 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:10,676 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:10,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable932 [2021-05-22 02:05:10,676 INFO L430 AbstractCegarLoop]: === Iteration 934 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:10,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:10,676 INFO L82 PathProgramCache]: Analyzing trace with hash 794853097, now seen corresponding path program 929 times [2021-05-22 02:05:10,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:10,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54418907] [2021-05-22 02:05:10,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:10,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:10,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:10,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54418907] [2021-05-22 02:05:10,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54418907] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:10,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:10,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:10,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426773642] [2021-05-22 02:05:10,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:10,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:10,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:10,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:10,770 INFO L87 Difference]: Start difference. First operand 5131 states and 24326 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:10,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:10,882 INFO L93 Difference]: Finished difference Result 11075 states and 49681 transitions. [2021-05-22 02:05:10,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:10,882 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:10,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:10,910 INFO L225 Difference]: With dead ends: 11075 [2021-05-22 02:05:10,910 INFO L226 Difference]: Without dead ends: 10600 [2021-05-22 02:05:10,910 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:11,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10600 states. [2021-05-22 02:05:11,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10600 to 5203. [2021-05-22 02:05:11,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.729334871203383) internal successors, (24602), 5202 states have internal predecessors, (24602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:11,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24602 transitions. [2021-05-22 02:05:11,145 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24602 transitions. Word has length 29 [2021-05-22 02:05:11,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:11,145 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24602 transitions. [2021-05-22 02:05:11,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:11,145 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24602 transitions. [2021-05-22 02:05:11,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:11,153 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:11,154 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:11,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable933 [2021-05-22 02:05:11,154 INFO L430 AbstractCegarLoop]: === Iteration 935 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:11,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:11,154 INFO L82 PathProgramCache]: Analyzing trace with hash -597291449, now seen corresponding path program 930 times [2021-05-22 02:05:11,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:11,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980465252] [2021-05-22 02:05:11,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:11,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:11,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:11,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980465252] [2021-05-22 02:05:11,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980465252] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:11,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:11,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:11,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211716300] [2021-05-22 02:05:11,247 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:11,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:11,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:11,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:11,247 INFO L87 Difference]: Start difference. First operand 5203 states and 24602 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:11,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:11,361 INFO L93 Difference]: Finished difference Result 10743 states and 48384 transitions. [2021-05-22 02:05:11,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:11,362 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:11,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:11,388 INFO L225 Difference]: With dead ends: 10743 [2021-05-22 02:05:11,389 INFO L226 Difference]: Without dead ends: 10184 [2021-05-22 02:05:11,389 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:11,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10184 states. [2021-05-22 02:05:11,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10184 to 5107. [2021-05-22 02:05:11,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5107 states, 5106 states have (on average 4.746964355660007) internal successors, (24238), 5106 states have internal predecessors, (24238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:11,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 24238 transitions. [2021-05-22 02:05:11,631 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 24238 transitions. Word has length 29 [2021-05-22 02:05:11,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:11,632 INFO L482 AbstractCegarLoop]: Abstraction has 5107 states and 24238 transitions. [2021-05-22 02:05:11,632 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:11,632 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 24238 transitions. [2021-05-22 02:05:11,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:11,640 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:11,640 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:11,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable934 [2021-05-22 02:05:11,641 INFO L430 AbstractCegarLoop]: === Iteration 936 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:11,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:11,641 INFO L82 PathProgramCache]: Analyzing trace with hash -90626421, now seen corresponding path program 931 times [2021-05-22 02:05:11,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:11,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590951549] [2021-05-22 02:05:11,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:11,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:11,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:11,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590951549] [2021-05-22 02:05:11,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590951549] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:11,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:11,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:11,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526754228] [2021-05-22 02:05:11,735 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:11,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:11,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:11,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:11,735 INFO L87 Difference]: Start difference. First operand 5107 states and 24238 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:11,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:11,858 INFO L93 Difference]: Finished difference Result 11351 states and 50915 transitions. [2021-05-22 02:05:11,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:11,858 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:11,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:11,886 INFO L225 Difference]: With dead ends: 11351 [2021-05-22 02:05:11,886 INFO L226 Difference]: Without dead ends: 10874 [2021-05-22 02:05:11,886 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:12,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10874 states. [2021-05-22 02:05:12,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10874 to 5221. [2021-05-22 02:05:12,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5221 states, 5220 states have (on average 4.7362068965517246) internal successors, (24723), 5220 states have internal predecessors, (24723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:12,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 24723 transitions. [2021-05-22 02:05:12,129 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 24723 transitions. Word has length 29 [2021-05-22 02:05:12,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:12,129 INFO L482 AbstractCegarLoop]: Abstraction has 5221 states and 24723 transitions. [2021-05-22 02:05:12,129 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:12,130 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 24723 transitions. [2021-05-22 02:05:12,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:12,138 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:12,138 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:12,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable935 [2021-05-22 02:05:12,138 INFO L430 AbstractCegarLoop]: === Iteration 937 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:12,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:12,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1482770967, now seen corresponding path program 932 times [2021-05-22 02:05:12,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:12,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382632570] [2021-05-22 02:05:12,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:12,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:12,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382632570] [2021-05-22 02:05:12,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382632570] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:12,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:12,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:12,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117292882] [2021-05-22 02:05:12,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:12,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:12,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:12,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:12,234 INFO L87 Difference]: Start difference. First operand 5221 states and 24723 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:12,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:12,358 INFO L93 Difference]: Finished difference Result 11349 states and 50832 transitions. [2021-05-22 02:05:12,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:12,358 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:12,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:12,385 INFO L225 Difference]: With dead ends: 11349 [2021-05-22 02:05:12,386 INFO L226 Difference]: Without dead ends: 10796 [2021-05-22 02:05:12,386 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:12,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10796 states. [2021-05-22 02:05:12,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10796 to 5143. [2021-05-22 02:05:12,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.744068455853753) internal successors, (24394), 5142 states have internal predecessors, (24394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:12,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24394 transitions. [2021-05-22 02:05:12,620 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24394 transitions. Word has length 29 [2021-05-22 02:05:12,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:12,621 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24394 transitions. [2021-05-22 02:05:12,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:12,621 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24394 transitions. [2021-05-22 02:05:12,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:12,629 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:12,629 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:12,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable936 [2021-05-22 02:05:12,629 INFO L430 AbstractCegarLoop]: === Iteration 938 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:12,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:12,629 INFO L82 PathProgramCache]: Analyzing trace with hash 2088261225, now seen corresponding path program 933 times [2021-05-22 02:05:12,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:12,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791737134] [2021-05-22 02:05:12,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:12,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:12,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791737134] [2021-05-22 02:05:12,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791737134] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:12,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:12,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:12,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361910135] [2021-05-22 02:05:12,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:12,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:12,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:12,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:12,740 INFO L87 Difference]: Start difference. First operand 5143 states and 24394 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:12,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:12,843 INFO L93 Difference]: Finished difference Result 11175 states and 50147 transitions. [2021-05-22 02:05:12,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:12,843 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:12,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:12,870 INFO L225 Difference]: With dead ends: 11175 [2021-05-22 02:05:12,870 INFO L226 Difference]: Without dead ends: 10698 [2021-05-22 02:05:12,870 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:12,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10698 states. [2021-05-22 02:05:13,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10698 to 5215. [2021-05-22 02:05:13,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5214 states have (on average 4.731492136555428) internal successors, (24670), 5214 states have internal predecessors, (24670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 24670 transitions. [2021-05-22 02:05:13,111 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 24670 transitions. Word has length 29 [2021-05-22 02:05:13,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:13,111 INFO L482 AbstractCegarLoop]: Abstraction has 5215 states and 24670 transitions. [2021-05-22 02:05:13,111 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:13,112 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 24670 transitions. [2021-05-22 02:05:13,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:13,120 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:13,120 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:13,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable937 [2021-05-22 02:05:13,121 INFO L430 AbstractCegarLoop]: === Iteration 939 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:13,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:13,121 INFO L82 PathProgramCache]: Analyzing trace with hash -999725335, now seen corresponding path program 934 times [2021-05-22 02:05:13,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:13,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54856769] [2021-05-22 02:05:13,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:13,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:13,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54856769] [2021-05-22 02:05:13,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54856769] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:13,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:13,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:13,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993570873] [2021-05-22 02:05:13,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:13,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:13,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:13,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:13,227 INFO L87 Difference]: Start difference. First operand 5215 states and 24670 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:13,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:13,331 INFO L93 Difference]: Finished difference Result 10841 states and 48845 transitions. [2021-05-22 02:05:13,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:13,332 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:13,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:13,359 INFO L225 Difference]: With dead ends: 10841 [2021-05-22 02:05:13,359 INFO L226 Difference]: Without dead ends: 10306 [2021-05-22 02:05:13,359 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:13,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10306 states. [2021-05-22 02:05:13,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10306 to 5143. [2021-05-22 02:05:13,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.73706728899261) internal successors, (24358), 5142 states have internal predecessors, (24358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:13,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24358 transitions. [2021-05-22 02:05:13,598 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24358 transitions. Word has length 29 [2021-05-22 02:05:13,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:13,598 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24358 transitions. [2021-05-22 02:05:13,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:13,598 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24358 transitions. [2021-05-22 02:05:13,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:13,607 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:13,607 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:13,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable938 [2021-05-22 02:05:13,607 INFO L430 AbstractCegarLoop]: === Iteration 940 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:13,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:13,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1842448697, now seen corresponding path program 935 times [2021-05-22 02:05:13,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:13,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122489538] [2021-05-22 02:05:13,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:13,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:13,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:13,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122489538] [2021-05-22 02:05:13,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122489538] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:13,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:13,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:13,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724582834] [2021-05-22 02:05:13,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:13,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:13,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:13,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:13,702 INFO L87 Difference]: Start difference. First operand 5143 states and 24358 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:13,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:13,807 INFO L93 Difference]: Finished difference Result 11173 states and 50106 transitions. [2021-05-22 02:05:13,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:13,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:13,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:13,834 INFO L225 Difference]: With dead ends: 11173 [2021-05-22 02:05:13,834 INFO L226 Difference]: Without dead ends: 10698 [2021-05-22 02:05:13,835 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:13,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10698 states. [2021-05-22 02:05:14,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10698 to 5215. [2021-05-22 02:05:14,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5214 states have (on average 4.724587648638281) internal successors, (24634), 5214 states have internal predecessors, (24634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:14,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 24634 transitions. [2021-05-22 02:05:14,076 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 24634 transitions. Word has length 29 [2021-05-22 02:05:14,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:14,076 INFO L482 AbstractCegarLoop]: Abstraction has 5215 states and 24634 transitions. [2021-05-22 02:05:14,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:14,076 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 24634 transitions. [2021-05-22 02:05:14,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:14,085 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:14,085 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:14,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable939 [2021-05-22 02:05:14,085 INFO L430 AbstractCegarLoop]: === Iteration 941 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:14,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:14,085 INFO L82 PathProgramCache]: Analyzing trace with hash -2049256663, now seen corresponding path program 936 times [2021-05-22 02:05:14,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:14,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680378677] [2021-05-22 02:05:14,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:14,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:14,180 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:14,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680378677] [2021-05-22 02:05:14,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680378677] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:14,180 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:14,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:14,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641006416] [2021-05-22 02:05:14,180 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:14,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:14,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:14,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:14,180 INFO L87 Difference]: Start difference. First operand 5215 states and 24634 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:14,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:14,291 INFO L93 Difference]: Finished difference Result 10841 states and 48809 transitions. [2021-05-22 02:05:14,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:14,292 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:14,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:14,319 INFO L225 Difference]: With dead ends: 10841 [2021-05-22 02:05:14,319 INFO L226 Difference]: Without dead ends: 10258 [2021-05-22 02:05:14,319 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:14,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10258 states. [2021-05-22 02:05:14,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10258 to 5095. [2021-05-22 02:05:14,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5095 states, 5094 states have (on average 4.75068708284256) internal successors, (24200), 5094 states have internal predecessors, (24200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:14,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 24200 transitions. [2021-05-22 02:05:14,557 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 24200 transitions. Word has length 29 [2021-05-22 02:05:14,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:14,557 INFO L482 AbstractCegarLoop]: Abstraction has 5095 states and 24200 transitions. [2021-05-22 02:05:14,557 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:14,557 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 24200 transitions. [2021-05-22 02:05:14,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:14,565 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:14,565 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:14,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable940 [2021-05-22 02:05:14,566 INFO L430 AbstractCegarLoop]: === Iteration 942 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:14,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:14,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1110366581, now seen corresponding path program 937 times [2021-05-22 02:05:14,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:14,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337215111] [2021-05-22 02:05:14,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:14,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:14,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:14,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337215111] [2021-05-22 02:05:14,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337215111] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:14,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:14,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:14,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440048307] [2021-05-22 02:05:14,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:14,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:14,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:14,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:14,664 INFO L87 Difference]: Start difference. First operand 5095 states and 24200 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:14,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:14,762 INFO L93 Difference]: Finished difference Result 12307 states and 55050 transitions. [2021-05-22 02:05:14,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:14,762 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:14,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:14,792 INFO L225 Difference]: With dead ends: 12307 [2021-05-22 02:05:14,793 INFO L226 Difference]: Without dead ends: 11765 [2021-05-22 02:05:14,793 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 103.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:14,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11765 states. [2021-05-22 02:05:15,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11765 to 5367. [2021-05-22 02:05:15,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5367 states, 5366 states have (on average 4.720275810659709) internal successors, (25329), 5366 states have internal predecessors, (25329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:15,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5367 states to 5367 states and 25329 transitions. [2021-05-22 02:05:15,044 INFO L78 Accepts]: Start accepts. Automaton has 5367 states and 25329 transitions. Word has length 29 [2021-05-22 02:05:15,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:15,044 INFO L482 AbstractCegarLoop]: Abstraction has 5367 states and 25329 transitions. [2021-05-22 02:05:15,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:15,044 INFO L276 IsEmpty]: Start isEmpty. Operand 5367 states and 25329 transitions. [2021-05-22 02:05:15,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:15,053 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:15,053 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:15,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable941 [2021-05-22 02:05:15,053 INFO L430 AbstractCegarLoop]: === Iteration 943 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:15,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:15,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1141263721, now seen corresponding path program 938 times [2021-05-22 02:05:15,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:15,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506840733] [2021-05-22 02:05:15,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:15,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:15,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:15,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506840733] [2021-05-22 02:05:15,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506840733] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:15,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:15,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:15,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648303832] [2021-05-22 02:05:15,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:15,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:15,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:15,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:15,151 INFO L87 Difference]: Start difference. First operand 5367 states and 25329 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:15,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:15,264 INFO L93 Difference]: Finished difference Result 12242 states and 54681 transitions. [2021-05-22 02:05:15,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:15,264 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:15,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:15,295 INFO L225 Difference]: With dead ends: 12242 [2021-05-22 02:05:15,295 INFO L226 Difference]: Without dead ends: 11622 [2021-05-22 02:05:15,295 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:15,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11622 states. [2021-05-22 02:05:15,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11622 to 5224. [2021-05-22 02:05:15,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5224 states, 5223 states have (on average 4.73654987555045) internal successors, (24739), 5223 states have internal predecessors, (24739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:15,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5224 states to 5224 states and 24739 transitions. [2021-05-22 02:05:15,544 INFO L78 Accepts]: Start accepts. Automaton has 5224 states and 24739 transitions. Word has length 29 [2021-05-22 02:05:15,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:15,544 INFO L482 AbstractCegarLoop]: Abstraction has 5224 states and 24739 transitions. [2021-05-22 02:05:15,544 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:15,544 INFO L276 IsEmpty]: Start isEmpty. Operand 5224 states and 24739 transitions. [2021-05-22 02:05:15,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:15,553 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:15,553 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:15,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable942 [2021-05-22 02:05:15,553 INFO L430 AbstractCegarLoop]: === Iteration 944 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:15,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:15,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1068521065, now seen corresponding path program 939 times [2021-05-22 02:05:15,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:15,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660548710] [2021-05-22 02:05:15,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:15,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:15,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:15,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660548710] [2021-05-22 02:05:15,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660548710] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:15,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:15,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:15,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810995538] [2021-05-22 02:05:15,650 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:15,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:15,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:15,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:15,650 INFO L87 Difference]: Start difference. First operand 5224 states and 24739 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:15,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:15,754 INFO L93 Difference]: Finished difference Result 12272 states and 54859 transitions. [2021-05-22 02:05:15,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:15,754 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:15,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:15,784 INFO L225 Difference]: With dead ends: 12272 [2021-05-22 02:05:15,784 INFO L226 Difference]: Without dead ends: 11730 [2021-05-22 02:05:15,785 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 103.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:15,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11730 states. [2021-05-22 02:05:16,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11730 to 5334. [2021-05-22 02:05:16,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5334 states, 5333 states have (on average 4.714794674667167) internal successors, (25144), 5333 states have internal predecessors, (25144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:16,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5334 states to 5334 states and 25144 transitions. [2021-05-22 02:05:16,037 INFO L78 Accepts]: Start accepts. Automaton has 5334 states and 25144 transitions. Word has length 29 [2021-05-22 02:05:16,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:16,037 INFO L482 AbstractCegarLoop]: Abstraction has 5334 states and 25144 transitions. [2021-05-22 02:05:16,037 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:16,037 INFO L276 IsEmpty]: Start isEmpty. Operand 5334 states and 25144 transitions. [2021-05-22 02:05:16,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:16,046 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:16,046 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:16,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable943 [2021-05-22 02:05:16,046 INFO L430 AbstractCegarLoop]: === Iteration 945 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:16,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:16,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1624309353, now seen corresponding path program 940 times [2021-05-22 02:05:16,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:16,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451545928] [2021-05-22 02:05:16,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:16,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:16,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:16,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451545928] [2021-05-22 02:05:16,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451545928] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:16,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:16,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:16,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209687331] [2021-05-22 02:05:16,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:16,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:16,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:16,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:16,142 INFO L87 Difference]: Start difference. First operand 5334 states and 25144 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:16,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:16,253 INFO L93 Difference]: Finished difference Result 12205 states and 54486 transitions. [2021-05-22 02:05:16,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:16,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:16,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:16,282 INFO L225 Difference]: With dead ends: 12205 [2021-05-22 02:05:16,283 INFO L226 Difference]: Without dead ends: 11620 [2021-05-22 02:05:16,283 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:16,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11620 states. [2021-05-22 02:05:16,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11620 to 5224. [2021-05-22 02:05:16,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5224 states, 5223 states have (on average 4.726019529006318) internal successors, (24684), 5223 states have internal predecessors, (24684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5224 states to 5224 states and 24684 transitions. [2021-05-22 02:05:16,535 INFO L78 Accepts]: Start accepts. Automaton has 5224 states and 24684 transitions. Word has length 29 [2021-05-22 02:05:16,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:16,535 INFO L482 AbstractCegarLoop]: Abstraction has 5224 states and 24684 transitions. [2021-05-22 02:05:16,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:16,535 INFO L276 IsEmpty]: Start isEmpty. Operand 5224 states and 24684 transitions. [2021-05-22 02:05:16,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:16,544 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:16,544 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:16,544 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable944 [2021-05-22 02:05:16,544 INFO L430 AbstractCegarLoop]: === Iteration 946 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:16,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:16,544 INFO L82 PathProgramCache]: Analyzing trace with hash 2050868679, now seen corresponding path program 941 times [2021-05-22 02:05:16,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:16,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115468192] [2021-05-22 02:05:16,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:16,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:16,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:16,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115468192] [2021-05-22 02:05:16,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115468192] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:16,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:16,642 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:16,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516651735] [2021-05-22 02:05:16,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:16,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:16,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:16,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:16,642 INFO L87 Difference]: Start difference. First operand 5224 states and 24684 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:16,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:16,760 INFO L93 Difference]: Finished difference Result 12110 states and 54144 transitions. [2021-05-22 02:05:16,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:16,760 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:16,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:16,791 INFO L225 Difference]: With dead ends: 12110 [2021-05-22 02:05:16,791 INFO L226 Difference]: Without dead ends: 11633 [2021-05-22 02:05:16,791 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:16,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11633 states. [2021-05-22 02:05:17,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11633 to 5302. [2021-05-22 02:05:17,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5302 states, 5301 states have (on average 4.711752499528391) internal successors, (24977), 5301 states have internal predecessors, (24977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:17,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5302 states to 5302 states and 24977 transitions. [2021-05-22 02:05:17,044 INFO L78 Accepts]: Start accepts. Automaton has 5302 states and 24977 transitions. Word has length 29 [2021-05-22 02:05:17,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:17,044 INFO L482 AbstractCegarLoop]: Abstraction has 5302 states and 24977 transitions. [2021-05-22 02:05:17,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:17,044 INFO L276 IsEmpty]: Start isEmpty. Operand 5302 states and 24977 transitions. [2021-05-22 02:05:17,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:17,053 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:17,053 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:17,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable945 [2021-05-22 02:05:17,053 INFO L430 AbstractCegarLoop]: === Iteration 947 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:17,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:17,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1844060713, now seen corresponding path program 942 times [2021-05-22 02:05:17,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:17,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683942233] [2021-05-22 02:05:17,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:17,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:17,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683942233] [2021-05-22 02:05:17,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683942233] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:17,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:17,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:17,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531249414] [2021-05-22 02:05:17,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:17,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:17,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:17,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:17,150 INFO L87 Difference]: Start difference. First operand 5302 states and 24977 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:17,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:17,314 INFO L93 Difference]: Finished difference Result 12108 states and 54061 transitions. [2021-05-22 02:05:17,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:17,314 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:17,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:17,345 INFO L225 Difference]: With dead ends: 12108 [2021-05-22 02:05:17,345 INFO L226 Difference]: Without dead ends: 11468 [2021-05-22 02:05:17,345 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:17,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11468 states. [2021-05-22 02:05:17,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11468 to 5137. [2021-05-22 02:05:17,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.745132398753894) internal successors, (24371), 5136 states have internal predecessors, (24371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:17,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24371 transitions. [2021-05-22 02:05:17,585 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24371 transitions. Word has length 29 [2021-05-22 02:05:17,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:17,585 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24371 transitions. [2021-05-22 02:05:17,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:17,585 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24371 transitions. [2021-05-22 02:05:17,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:17,594 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:17,594 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:17,594 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable946 [2021-05-22 02:05:17,594 INFO L430 AbstractCegarLoop]: === Iteration 948 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:17,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:17,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1151588073, now seen corresponding path program 943 times [2021-05-22 02:05:17,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:17,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586579907] [2021-05-22 02:05:17,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:17,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:17,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586579907] [2021-05-22 02:05:17,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586579907] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:17,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:17,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:17,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944780924] [2021-05-22 02:05:17,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:17,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:17,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:17,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:17,697 INFO L87 Difference]: Start difference. First operand 5137 states and 24371 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:17,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:17,794 INFO L93 Difference]: Finished difference Result 12121 states and 54231 transitions. [2021-05-22 02:05:17,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:17,794 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:17,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:17,824 INFO L225 Difference]: With dead ends: 12121 [2021-05-22 02:05:17,824 INFO L226 Difference]: Without dead ends: 11579 [2021-05-22 02:05:17,824 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:17,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11579 states. [2021-05-22 02:05:18,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11579 to 5348. [2021-05-22 02:05:18,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5348 states, 5347 states have (on average 4.717785674209837) internal successors, (25226), 5347 states have internal predecessors, (25226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5348 states to 5348 states and 25226 transitions. [2021-05-22 02:05:18,071 INFO L78 Accepts]: Start accepts. Automaton has 5348 states and 25226 transitions. Word has length 29 [2021-05-22 02:05:18,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:18,071 INFO L482 AbstractCegarLoop]: Abstraction has 5348 states and 25226 transitions. [2021-05-22 02:05:18,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 5348 states and 25226 transitions. [2021-05-22 02:05:18,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:18,079 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:18,079 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:18,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable947 [2021-05-22 02:05:18,079 INFO L430 AbstractCegarLoop]: === Iteration 949 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:18,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:18,079 INFO L82 PathProgramCache]: Analyzing trace with hash -891748921, now seen corresponding path program 944 times [2021-05-22 02:05:18,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:18,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22383835] [2021-05-22 02:05:18,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:18,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:18,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:18,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22383835] [2021-05-22 02:05:18,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22383835] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:18,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:18,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:18,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986457734] [2021-05-22 02:05:18,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:18,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:18,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:18,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:18,181 INFO L87 Difference]: Start difference. First operand 5348 states and 25226 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:18,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:18,287 INFO L93 Difference]: Finished difference Result 12056 states and 53862 transitions. [2021-05-22 02:05:18,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:18,287 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:18,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:18,317 INFO L225 Difference]: With dead ends: 12056 [2021-05-22 02:05:18,317 INFO L226 Difference]: Without dead ends: 11436 [2021-05-22 02:05:18,317 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:18,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11436 states. [2021-05-22 02:05:18,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11436 to 5205. [2021-05-22 02:05:18,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5205 states, 5204 states have (on average 4.734627209838585) internal successors, (24639), 5204 states have internal predecessors, (24639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:18,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5205 states to 5205 states and 24639 transitions. [2021-05-22 02:05:18,580 INFO L78 Accepts]: Start accepts. Automaton has 5205 states and 24639 transitions. Word has length 29 [2021-05-22 02:05:18,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:18,580 INFO L482 AbstractCegarLoop]: Abstraction has 5205 states and 24639 transitions. [2021-05-22 02:05:18,580 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:18,580 INFO L276 IsEmpty]: Start isEmpty. Operand 5205 states and 24639 transitions. [2021-05-22 02:05:18,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:18,589 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:18,589 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:18,589 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable948 [2021-05-22 02:05:18,589 INFO L430 AbstractCegarLoop]: === Iteration 950 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:18,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:18,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1418905449, now seen corresponding path program 945 times [2021-05-22 02:05:18,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:18,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712899577] [2021-05-22 02:05:18,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:18,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:18,703 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:18,703 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712899577] [2021-05-22 02:05:18,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712899577] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:18,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:18,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:18,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112848777] [2021-05-22 02:05:18,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:18,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:18,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:18,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:18,704 INFO L87 Difference]: Start difference. First operand 5205 states and 24639 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:18,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:18,797 INFO L93 Difference]: Finished difference Result 11845 states and 53053 transitions. [2021-05-22 02:05:18,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:18,797 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:18,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:18,825 INFO L225 Difference]: With dead ends: 11845 [2021-05-22 02:05:18,825 INFO L226 Difference]: Without dead ends: 11303 [2021-05-22 02:05:18,825 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:18,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11303 states. [2021-05-22 02:05:19,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11303 to 5309. [2021-05-22 02:05:19,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 5308 states have (on average 4.714958553127355) internal successors, (25027), 5308 states have internal predecessors, (25027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:19,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 25027 transitions. [2021-05-22 02:05:19,068 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 25027 transitions. Word has length 29 [2021-05-22 02:05:19,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:19,068 INFO L482 AbstractCegarLoop]: Abstraction has 5309 states and 25027 transitions. [2021-05-22 02:05:19,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:19,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 25027 transitions. [2021-05-22 02:05:19,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:19,077 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:19,077 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:19,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable949 [2021-05-22 02:05:19,077 INFO L430 AbstractCegarLoop]: === Iteration 951 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:19,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:19,077 INFO L82 PathProgramCache]: Analyzing trace with hash 701337449, now seen corresponding path program 946 times [2021-05-22 02:05:19,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:19,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006738972] [2021-05-22 02:05:19,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:19,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:19,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006738972] [2021-05-22 02:05:19,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006738972] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:19,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:19,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:19,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501690875] [2021-05-22 02:05:19,190 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:19,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:19,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:19,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:19,191 INFO L87 Difference]: Start difference. First operand 5309 states and 25027 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:19,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:19,303 INFO L93 Difference]: Finished difference Result 11446 states and 51461 transitions. [2021-05-22 02:05:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:19,303 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:19,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:19,331 INFO L225 Difference]: With dead ends: 11446 [2021-05-22 02:05:19,331 INFO L226 Difference]: Without dead ends: 10879 [2021-05-22 02:05:19,331 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:19,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10879 states. [2021-05-22 02:05:19,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10879 to 5205. [2021-05-22 02:05:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5205 states, 5204 states have (on average 4.724634896233667) internal successors, (24587), 5204 states have internal predecessors, (24587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:19,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5205 states to 5205 states and 24587 transitions. [2021-05-22 02:05:19,569 INFO L78 Accepts]: Start accepts. Automaton has 5205 states and 24587 transitions. Word has length 29 [2021-05-22 02:05:19,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:19,569 INFO L482 AbstractCegarLoop]: Abstraction has 5205 states and 24587 transitions. [2021-05-22 02:05:19,569 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:19,570 INFO L276 IsEmpty]: Start isEmpty. Operand 5205 states and 24587 transitions. [2021-05-22 02:05:19,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:19,578 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:19,578 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:19,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable950 [2021-05-22 02:05:19,578 INFO L430 AbstractCegarLoop]: === Iteration 952 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:19,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:19,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1893714233, now seen corresponding path program 947 times [2021-05-22 02:05:19,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:19,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699374645] [2021-05-22 02:05:19,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:19,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:19,691 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:19,691 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699374645] [2021-05-22 02:05:19,691 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699374645] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:19,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:19,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:19,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307569081] [2021-05-22 02:05:19,691 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:19,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:19,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:19,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:19,691 INFO L87 Difference]: Start difference. First operand 5205 states and 24587 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:19,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:19,798 INFO L93 Difference]: Finished difference Result 11748 states and 52599 transitions. [2021-05-22 02:05:19,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:19,798 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:19,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:19,827 INFO L225 Difference]: With dead ends: 11748 [2021-05-22 02:05:19,827 INFO L226 Difference]: Without dead ends: 11271 [2021-05-22 02:05:19,827 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:19,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11271 states. [2021-05-22 02:05:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11271 to 5277. [2021-05-22 02:05:20,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5277 states, 5276 states have (on average 4.712471569370735) internal successors, (24863), 5276 states have internal predecessors, (24863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:20,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 24863 transitions. [2021-05-22 02:05:20,068 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 24863 transitions. Word has length 29 [2021-05-22 02:05:20,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:20,068 INFO L482 AbstractCegarLoop]: Abstraction has 5277 states and 24863 transitions. [2021-05-22 02:05:20,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:20,068 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 24863 transitions. [2021-05-22 02:05:20,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:20,077 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:20,077 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:20,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable951 [2021-05-22 02:05:20,077 INFO L430 AbstractCegarLoop]: === Iteration 953 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:20,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:20,077 INFO L82 PathProgramCache]: Analyzing trace with hash -381296087, now seen corresponding path program 948 times [2021-05-22 02:05:20,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:20,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787219205] [2021-05-22 02:05:20,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:20,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:20,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787219205] [2021-05-22 02:05:20,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787219205] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:20,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:20,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:20,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643542977] [2021-05-22 02:05:20,190 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:20,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:20,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:20,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:20,190 INFO L87 Difference]: Start difference. First operand 5277 states and 24863 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:20,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:20,303 INFO L93 Difference]: Finished difference Result 11414 states and 51297 transitions. [2021-05-22 02:05:20,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:20,303 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:20,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:20,331 INFO L225 Difference]: With dead ends: 11414 [2021-05-22 02:05:20,331 INFO L226 Difference]: Without dead ends: 10811 [2021-05-22 02:05:20,331 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:20,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10811 states. [2021-05-22 02:05:20,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10811 to 5137. [2021-05-22 02:05:20,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.73851246105919) internal successors, (24337), 5136 states have internal predecessors, (24337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:20,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24337 transitions. [2021-05-22 02:05:20,573 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24337 transitions. Word has length 29 [2021-05-22 02:05:20,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:20,573 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24337 transitions. [2021-05-22 02:05:20,573 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:20,573 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24337 transitions. [2021-05-22 02:05:20,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:20,581 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:20,581 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:20,582 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable952 [2021-05-22 02:05:20,582 INFO L430 AbstractCegarLoop]: === Iteration 954 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:20,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:20,582 INFO L82 PathProgramCache]: Analyzing trace with hash -984393785, now seen corresponding path program 949 times [2021-05-22 02:05:20,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:20,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243131152] [2021-05-22 02:05:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:20,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:20,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243131152] [2021-05-22 02:05:20,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243131152] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:20,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:20,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:20,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723120507] [2021-05-22 02:05:20,681 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:20,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:20,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:20,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:20,682 INFO L87 Difference]: Start difference. First operand 5137 states and 24337 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:20,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:20,804 INFO L93 Difference]: Finished difference Result 12068 states and 54008 transitions. [2021-05-22 02:05:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:20,805 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:20,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:20,834 INFO L225 Difference]: With dead ends: 12068 [2021-05-22 02:05:20,834 INFO L226 Difference]: Without dead ends: 11526 [2021-05-22 02:05:20,834 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 102.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:20,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11526 states. [2021-05-22 02:05:21,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11526 to 5299. [2021-05-22 02:05:21,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5299 states, 5298 states have (on average 4.7214043035107585) internal successors, (25014), 5298 states have internal predecessors, (25014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:21,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5299 states to 5299 states and 25014 transitions. [2021-05-22 02:05:21,081 INFO L78 Accepts]: Start accepts. Automaton has 5299 states and 25014 transitions. Word has length 29 [2021-05-22 02:05:21,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:21,081 INFO L482 AbstractCegarLoop]: Abstraction has 5299 states and 25014 transitions. [2021-05-22 02:05:21,081 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:21,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5299 states and 25014 transitions. [2021-05-22 02:05:21,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:21,090 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:21,090 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:21,090 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable953 [2021-05-22 02:05:21,090 INFO L430 AbstractCegarLoop]: === Iteration 955 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:21,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:21,090 INFO L82 PathProgramCache]: Analyzing trace with hash -428605497, now seen corresponding path program 950 times [2021-05-22 02:05:21,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:21,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704100463] [2021-05-22 02:05:21,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:21,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:21,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:21,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704100463] [2021-05-22 02:05:21,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704100463] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:21,187 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:21,187 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:21,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768313755] [2021-05-22 02:05:21,187 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:21,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:21,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:21,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:21,187 INFO L87 Difference]: Start difference. First operand 5299 states and 25014 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:21,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:21,301 INFO L93 Difference]: Finished difference Result 12001 states and 53635 transitions. [2021-05-22 02:05:21,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:21,301 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:21,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:21,330 INFO L225 Difference]: With dead ends: 12001 [2021-05-22 02:05:21,330 INFO L226 Difference]: Without dead ends: 11416 [2021-05-22 02:05:21,330 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:21,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11416 states. [2021-05-22 02:05:21,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11416 to 5189. [2021-05-22 02:05:21,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 4.733423284502699) internal successors, (24557), 5188 states have internal predecessors, (24557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:21,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 24557 transitions. [2021-05-22 02:05:21,571 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 24557 transitions. Word has length 29 [2021-05-22 02:05:21,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:21,571 INFO L482 AbstractCegarLoop]: Abstraction has 5189 states and 24557 transitions. [2021-05-22 02:05:21,571 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:21,571 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 24557 transitions. [2021-05-22 02:05:21,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:21,580 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:21,580 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:21,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable954 [2021-05-22 02:05:21,580 INFO L430 AbstractCegarLoop]: === Iteration 956 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:21,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:21,580 INFO L82 PathProgramCache]: Analyzing trace with hash 2136613801, now seen corresponding path program 951 times [2021-05-22 02:05:21,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:21,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627499188] [2021-05-22 02:05:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:21,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:21,683 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:21,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627499188] [2021-05-22 02:05:21,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627499188] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:21,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:21,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:21,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034472516] [2021-05-22 02:05:21,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:21,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:21,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:21,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:21,684 INFO L87 Difference]: Start difference. First operand 5189 states and 24557 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:21,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:21,785 INFO L93 Difference]: Finished difference Result 11827 states and 52966 transitions. [2021-05-22 02:05:21,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:21,785 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:21,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:21,814 INFO L225 Difference]: With dead ends: 11827 [2021-05-22 02:05:21,814 INFO L226 Difference]: Without dead ends: 11285 [2021-05-22 02:05:21,814 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 109.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:21,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11285 states. [2021-05-22 02:05:22,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11285 to 5293. [2021-05-22 02:05:22,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5293 states, 5292 states have (on average 4.713718820861678) internal successors, (24945), 5292 states have internal predecessors, (24945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:22,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 24945 transitions. [2021-05-22 02:05:22,056 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 24945 transitions. Word has length 29 [2021-05-22 02:05:22,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:22,056 INFO L482 AbstractCegarLoop]: Abstraction has 5293 states and 24945 transitions. [2021-05-22 02:05:22,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:22,057 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 24945 transitions. [2021-05-22 02:05:22,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:22,065 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:22,065 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:22,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable955 [2021-05-22 02:05:22,065 INFO L430 AbstractCegarLoop]: === Iteration 957 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:22,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:22,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1331675193, now seen corresponding path program 952 times [2021-05-22 02:05:22,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:22,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696728993] [2021-05-22 02:05:22,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:22,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:22,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:22,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696728993] [2021-05-22 02:05:22,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696728993] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:22,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:22,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:22,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321880363] [2021-05-22 02:05:22,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:22,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:22,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:22,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:22,169 INFO L87 Difference]: Start difference. First operand 5293 states and 24945 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:22,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:22,276 INFO L93 Difference]: Finished difference Result 11428 states and 51374 transitions. [2021-05-22 02:05:22,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:22,276 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:22,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:22,304 INFO L225 Difference]: With dead ends: 11428 [2021-05-22 02:05:22,305 INFO L226 Difference]: Without dead ends: 10861 [2021-05-22 02:05:22,305 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:22,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10861 states. [2021-05-22 02:05:22,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10861 to 5189. [2021-05-22 02:05:22,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 4.723400154202005) internal successors, (24505), 5188 states have internal predecessors, (24505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:22,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 24505 transitions. [2021-05-22 02:05:22,544 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 24505 transitions. Word has length 29 [2021-05-22 02:05:22,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:22,544 INFO L482 AbstractCegarLoop]: Abstraction has 5189 states and 24505 transitions. [2021-05-22 02:05:22,544 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:22,544 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 24505 transitions. [2021-05-22 02:05:22,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:22,552 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:22,553 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:22,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable956 [2021-05-22 02:05:22,553 INFO L430 AbstractCegarLoop]: === Iteration 958 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:22,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:22,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1478281159, now seen corresponding path program 953 times [2021-05-22 02:05:22,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:22,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585217931] [2021-05-22 02:05:22,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:22,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:22,646 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:22,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585217931] [2021-05-22 02:05:22,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585217931] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:22,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:22,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:22,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510986252] [2021-05-22 02:05:22,647 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:22,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:22,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:22,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:22,647 INFO L87 Difference]: Start difference. First operand 5189 states and 24505 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:22,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:22,769 INFO L93 Difference]: Finished difference Result 11728 states and 52507 transitions. [2021-05-22 02:05:22,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:22,769 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:22,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:22,798 INFO L225 Difference]: With dead ends: 11728 [2021-05-22 02:05:22,798 INFO L226 Difference]: Without dead ends: 11253 [2021-05-22 02:05:22,799 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:22,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11253 states. [2021-05-22 02:05:23,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11253 to 5261. [2021-05-22 02:05:23,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 4.711216730038023) internal successors, (24781), 5260 states have internal predecessors, (24781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:23,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 24781 transitions. [2021-05-22 02:05:23,049 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 24781 transitions. Word has length 29 [2021-05-22 02:05:23,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:23,049 INFO L482 AbstractCegarLoop]: Abstraction has 5261 states and 24781 transitions. [2021-05-22 02:05:23,049 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:23,049 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 24781 transitions. [2021-05-22 02:05:23,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:23,058 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:23,058 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:23,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable957 [2021-05-22 02:05:23,058 INFO L430 AbstractCegarLoop]: === Iteration 959 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:23,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:23,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1271473193, now seen corresponding path program 954 times [2021-05-22 02:05:23,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:23,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042189148] [2021-05-22 02:05:23,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:23,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:23,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:23,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042189148] [2021-05-22 02:05:23,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042189148] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:23,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:23,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:23,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110021851] [2021-05-22 02:05:23,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:23,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:23,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:23,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:23,155 INFO L87 Difference]: Start difference. First operand 5261 states and 24781 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:23,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:23,271 INFO L93 Difference]: Finished difference Result 11396 states and 51210 transitions. [2021-05-22 02:05:23,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:23,271 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:23,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:23,299 INFO L225 Difference]: With dead ends: 11396 [2021-05-22 02:05:23,299 INFO L226 Difference]: Without dead ends: 10809 [2021-05-22 02:05:23,300 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:23,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10809 states. [2021-05-22 02:05:23,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10809 to 5137. [2021-05-22 02:05:23,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.73345015576324) internal successors, (24311), 5136 states have internal predecessors, (24311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:23,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24311 transitions. [2021-05-22 02:05:23,546 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24311 transitions. Word has length 29 [2021-05-22 02:05:23,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:23,546 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24311 transitions. [2021-05-22 02:05:23,546 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:23,546 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24311 transitions. [2021-05-22 02:05:23,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:23,555 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:23,555 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:23,555 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable958 [2021-05-22 02:05:23,555 INFO L430 AbstractCegarLoop]: === Iteration 960 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:23,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:23,555 INFO L82 PathProgramCache]: Analyzing trace with hash -11997275, now seen corresponding path program 955 times [2021-05-22 02:05:23,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:23,555 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157706565] [2021-05-22 02:05:23,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:23,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:23,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:23,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157706565] [2021-05-22 02:05:23,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157706565] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:23,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:23,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:23,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389387125] [2021-05-22 02:05:23,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:23,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:23,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:23,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:23,651 INFO L87 Difference]: Start difference. First operand 5137 states and 24311 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:23,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:23,766 INFO L93 Difference]: Finished difference Result 11793 states and 52840 transitions. [2021-05-22 02:05:23,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:23,766 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:23,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:23,795 INFO L225 Difference]: With dead ends: 11793 [2021-05-22 02:05:23,795 INFO L226 Difference]: Without dead ends: 11316 [2021-05-22 02:05:23,795 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:23,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11316 states. [2021-05-22 02:05:24,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11316 to 5251. [2021-05-22 02:05:24,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 4.723047619047619) internal successors, (24796), 5250 states have internal predecessors, (24796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:24,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 24796 transitions. [2021-05-22 02:05:24,036 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 24796 transitions. Word has length 29 [2021-05-22 02:05:24,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:24,037 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 24796 transitions. [2021-05-22 02:05:24,037 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:24,037 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 24796 transitions. [2021-05-22 02:05:24,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:24,045 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:24,045 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:24,045 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable959 [2021-05-22 02:05:24,045 INFO L430 AbstractCegarLoop]: === Iteration 961 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:24,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:24,045 INFO L82 PathProgramCache]: Analyzing trace with hash -218805241, now seen corresponding path program 956 times [2021-05-22 02:05:24,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:24,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972431268] [2021-05-22 02:05:24,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:24,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:24,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972431268] [2021-05-22 02:05:24,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972431268] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:24,140 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:24,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:24,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652200414] [2021-05-22 02:05:24,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:24,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:24,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:24,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:24,140 INFO L87 Difference]: Start difference. First operand 5251 states and 24796 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:24,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:24,247 INFO L93 Difference]: Finished difference Result 11791 states and 52757 transitions. [2021-05-22 02:05:24,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:24,248 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:24,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:24,276 INFO L225 Difference]: With dead ends: 11791 [2021-05-22 02:05:24,276 INFO L226 Difference]: Without dead ends: 11238 [2021-05-22 02:05:24,277 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:24,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11238 states. [2021-05-22 02:05:24,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11238 to 5173. [2021-05-22 02:05:24,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 4.730665119876257) internal successors, (24467), 5172 states have internal predecessors, (24467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:24,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 24467 transitions. [2021-05-22 02:05:24,519 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 24467 transitions. Word has length 29 [2021-05-22 02:05:24,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:24,519 INFO L482 AbstractCegarLoop]: Abstraction has 5173 states and 24467 transitions. [2021-05-22 02:05:24,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:24,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 24467 transitions. [2021-05-22 02:05:24,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:24,527 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:24,527 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:24,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable960 [2021-05-22 02:05:24,527 INFO L430 AbstractCegarLoop]: === Iteration 962 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:24,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:24,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1185956985, now seen corresponding path program 957 times [2021-05-22 02:05:24,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:24,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380223038] [2021-05-22 02:05:24,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:24,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:24,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380223038] [2021-05-22 02:05:24,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380223038] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:24,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:24,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:24,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966868143] [2021-05-22 02:05:24,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:24,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:24,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:24,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:24,633 INFO L87 Difference]: Start difference. First operand 5173 states and 24467 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:24,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:24,739 INFO L93 Difference]: Finished difference Result 11617 states and 52072 transitions. [2021-05-22 02:05:24,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:24,739 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:24,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:24,768 INFO L225 Difference]: With dead ends: 11617 [2021-05-22 02:05:24,768 INFO L226 Difference]: Without dead ends: 11140 [2021-05-22 02:05:24,768 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:24,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11140 states. [2021-05-22 02:05:24,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11140 to 5245. [2021-05-22 02:05:24,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 5244 states have (on average 4.71834477498093) internal successors, (24743), 5244 states have internal predecessors, (24743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:25,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 24743 transitions. [2021-05-22 02:05:25,005 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 24743 transitions. Word has length 29 [2021-05-22 02:05:25,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:25,006 INFO L482 AbstractCegarLoop]: Abstraction has 5245 states and 24743 transitions. [2021-05-22 02:05:25,006 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:25,006 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 24743 transitions. [2021-05-22 02:05:25,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:25,014 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:25,014 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:25,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable961 [2021-05-22 02:05:25,015 INFO L430 AbstractCegarLoop]: === Iteration 963 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:25,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:25,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1870707463, now seen corresponding path program 958 times [2021-05-22 02:05:25,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:25,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726350184] [2021-05-22 02:05:25,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:25,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:25,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726350184] [2021-05-22 02:05:25,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726350184] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:25,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:25,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:25,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417066687] [2021-05-22 02:05:25,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:25,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:25,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:25,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:25,121 INFO L87 Difference]: Start difference. First operand 5245 states and 24743 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:25,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:25,227 INFO L93 Difference]: Finished difference Result 11283 states and 50770 transitions. [2021-05-22 02:05:25,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:25,228 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:25,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:25,255 INFO L225 Difference]: With dead ends: 11283 [2021-05-22 02:05:25,255 INFO L226 Difference]: Without dead ends: 10748 [2021-05-22 02:05:25,255 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:25,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10748 states. [2021-05-22 02:05:25,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10748 to 5173. [2021-05-22 02:05:25,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 4.723704563031709) internal successors, (24431), 5172 states have internal predecessors, (24431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:25,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 24431 transitions. [2021-05-22 02:05:25,493 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 24431 transitions. Word has length 29 [2021-05-22 02:05:25,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:25,493 INFO L482 AbstractCegarLoop]: Abstraction has 5173 states and 24431 transitions. [2021-05-22 02:05:25,493 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:25,493 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 24431 transitions. [2021-05-22 02:05:25,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:25,502 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:25,502 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:25,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable962 [2021-05-22 02:05:25,502 INFO L430 AbstractCegarLoop]: === Iteration 964 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:25,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:25,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1516087017, now seen corresponding path program 959 times [2021-05-22 02:05:25,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:25,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863949887] [2021-05-22 02:05:25,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:25,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:25,597 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:25,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863949887] [2021-05-22 02:05:25,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863949887] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:25,597 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:25,597 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:25,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226590133] [2021-05-22 02:05:25,597 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:25,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:25,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:25,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:25,597 INFO L87 Difference]: Start difference. First operand 5173 states and 24431 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:25,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:25,705 INFO L93 Difference]: Finished difference Result 11615 states and 52031 transitions. [2021-05-22 02:05:25,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:25,705 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:25,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:25,734 INFO L225 Difference]: With dead ends: 11615 [2021-05-22 02:05:25,734 INFO L226 Difference]: Without dead ends: 11140 [2021-05-22 02:05:25,734 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:25,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11140 states. [2021-05-22 02:05:25,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11140 to 5245. [2021-05-22 02:05:25,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 5244 states have (on average 4.711479786422578) internal successors, (24707), 5244 states have internal predecessors, (24707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 24707 transitions. [2021-05-22 02:05:25,973 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 24707 transitions. Word has length 29 [2021-05-22 02:05:25,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:25,973 INFO L482 AbstractCegarLoop]: Abstraction has 5245 states and 24707 transitions. [2021-05-22 02:05:25,974 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:25,974 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 24707 transitions. [2021-05-22 02:05:25,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:25,982 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:25,982 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:25,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable963 [2021-05-22 02:05:25,982 INFO L430 AbstractCegarLoop]: === Iteration 965 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:25,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:25,982 INFO L82 PathProgramCache]: Analyzing trace with hash -599992633, now seen corresponding path program 960 times [2021-05-22 02:05:25,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:25,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328003613] [2021-05-22 02:05:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:26,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:26,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:26,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328003613] [2021-05-22 02:05:26,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328003613] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:26,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:26,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:26,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974470074] [2021-05-22 02:05:26,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:26,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:26,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:26,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:26,077 INFO L87 Difference]: Start difference. First operand 5245 states and 24707 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:26,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:26,189 INFO L93 Difference]: Finished difference Result 11283 states and 50734 transitions. [2021-05-22 02:05:26,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:26,190 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:26,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:26,217 INFO L225 Difference]: With dead ends: 11283 [2021-05-22 02:05:26,217 INFO L226 Difference]: Without dead ends: 10652 [2021-05-22 02:05:26,217 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:26,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10652 states. [2021-05-22 02:05:26,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10652 to 5077. [2021-05-22 02:05:26,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5077 states, 5076 states have (on average 4.7563041765169425) internal successors, (24143), 5076 states have internal predecessors, (24143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:26,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5077 states to 5077 states and 24143 transitions. [2021-05-22 02:05:26,456 INFO L78 Accepts]: Start accepts. Automaton has 5077 states and 24143 transitions. Word has length 29 [2021-05-22 02:05:26,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:26,456 INFO L482 AbstractCegarLoop]: Abstraction has 5077 states and 24143 transitions. [2021-05-22 02:05:26,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:26,456 INFO L276 IsEmpty]: Start isEmpty. Operand 5077 states and 24143 transitions. [2021-05-22 02:05:26,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:26,464 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:26,464 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:26,465 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable964 [2021-05-22 02:05:26,465 INFO L430 AbstractCegarLoop]: === Iteration 966 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:26,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:26,465 INFO L82 PathProgramCache]: Analyzing trace with hash 721261801, now seen corresponding path program 961 times [2021-05-22 02:05:26,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:26,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557912761] [2021-05-22 02:05:26,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:26,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:26,585 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:26,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557912761] [2021-05-22 02:05:26,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557912761] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:26,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:26,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:26,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691644972] [2021-05-22 02:05:26,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:26,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:26,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:26,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:26,585 INFO L87 Difference]: Start difference. First operand 5077 states and 24143 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:26,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:26,710 INFO L93 Difference]: Finished difference Result 11367 states and 50697 transitions. [2021-05-22 02:05:26,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:26,710 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:26,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:26,738 INFO L225 Difference]: With dead ends: 11367 [2021-05-22 02:05:26,738 INFO L226 Difference]: Without dead ends: 10952 [2021-05-22 02:05:26,738 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:26,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10952 states. [2021-05-22 02:05:26,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10952 to 5249. [2021-05-22 02:05:26,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5249 states, 5248 states have (on average 4.749047256097561) internal successors, (24923), 5248 states have internal predecessors, (24923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:26,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 24923 transitions. [2021-05-22 02:05:26,978 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 24923 transitions. Word has length 29 [2021-05-22 02:05:26,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:26,978 INFO L482 AbstractCegarLoop]: Abstraction has 5249 states and 24923 transitions. [2021-05-22 02:05:26,978 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:26,978 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 24923 transitions. [2021-05-22 02:05:26,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:26,987 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:26,987 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:26,987 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable965 [2021-05-22 02:05:26,987 INFO L430 AbstractCegarLoop]: === Iteration 967 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:26,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:26,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1818884887, now seen corresponding path program 962 times [2021-05-22 02:05:26,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:26,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994573934] [2021-05-22 02:05:26,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:27,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:27,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:27,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994573934] [2021-05-22 02:05:27,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994573934] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:27,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:27,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:27,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108689688] [2021-05-22 02:05:27,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:27,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:27,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:27,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:27,109 INFO L87 Difference]: Start difference. First operand 5249 states and 24923 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:27,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:27,205 INFO L93 Difference]: Finished difference Result 11494 states and 51176 transitions. [2021-05-22 02:05:27,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:27,205 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:27,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:27,233 INFO L225 Difference]: With dead ends: 11494 [2021-05-22 02:05:27,234 INFO L226 Difference]: Without dead ends: 10872 [2021-05-22 02:05:27,234 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:27,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10872 states. [2021-05-22 02:05:27,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10872 to 5169. [2021-05-22 02:05:27,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.752902476780186) internal successors, (24563), 5168 states have internal predecessors, (24563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:27,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24563 transitions. [2021-05-22 02:05:27,525 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24563 transitions. Word has length 29 [2021-05-22 02:05:27,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:27,526 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24563 transitions. [2021-05-22 02:05:27,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:27,526 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24563 transitions. [2021-05-22 02:05:27,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:27,534 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:27,534 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:27,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable966 [2021-05-22 02:05:27,534 INFO L430 AbstractCegarLoop]: === Iteration 968 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:27,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:27,535 INFO L82 PathProgramCache]: Analyzing trace with hash 501459945, now seen corresponding path program 963 times [2021-05-22 02:05:27,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:27,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62210192] [2021-05-22 02:05:27,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:27,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:27,653 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:27,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62210192] [2021-05-22 02:05:27,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62210192] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:27,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:27,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:27,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457985783] [2021-05-22 02:05:27,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:27,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:27,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:27,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:27,654 INFO L87 Difference]: Start difference. First operand 5169 states and 24563 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:27,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:27,763 INFO L93 Difference]: Finished difference Result 11270 states and 50255 transitions. [2021-05-22 02:05:27,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:27,764 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:27,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:27,792 INFO L225 Difference]: With dead ends: 11270 [2021-05-22 02:05:27,792 INFO L226 Difference]: Without dead ends: 10855 [2021-05-22 02:05:27,792 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:27,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10855 states. [2021-05-22 02:05:28,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10855 to 5217. [2021-05-22 02:05:28,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 4.742906441717792) internal successors, (24739), 5216 states have internal predecessors, (24739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:28,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 24739 transitions. [2021-05-22 02:05:28,039 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 24739 transitions. Word has length 29 [2021-05-22 02:05:28,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:28,039 INFO L482 AbstractCegarLoop]: Abstraction has 5217 states and 24739 transitions. [2021-05-22 02:05:28,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:28,040 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 24739 transitions. [2021-05-22 02:05:28,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:28,048 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:28,048 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:28,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable967 [2021-05-22 02:05:28,049 INFO L430 AbstractCegarLoop]: === Iteration 969 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:28,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:28,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1218122891, now seen corresponding path program 964 times [2021-05-22 02:05:28,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:28,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46305063] [2021-05-22 02:05:28,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:28,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:28,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:28,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46305063] [2021-05-22 02:05:28,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46305063] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:28,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:28,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:28,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754750500] [2021-05-22 02:05:28,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:28,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:28,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:28,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:28,167 INFO L87 Difference]: Start difference. First operand 5217 states and 24739 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:28,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:28,279 INFO L93 Difference]: Finished difference Result 11332 states and 50476 transitions. [2021-05-22 02:05:28,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:28,280 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:28,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:28,309 INFO L225 Difference]: With dead ends: 11332 [2021-05-22 02:05:28,309 INFO L226 Difference]: Without dead ends: 10807 [2021-05-22 02:05:28,309 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:28,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10807 states. [2021-05-22 02:05:28,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10807 to 5169. [2021-05-22 02:05:28,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.748258513931889) internal successors, (24539), 5168 states have internal predecessors, (24539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:28,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24539 transitions. [2021-05-22 02:05:28,554 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24539 transitions. Word has length 29 [2021-05-22 02:05:28,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:28,554 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24539 transitions. [2021-05-22 02:05:28,554 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:28,554 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24539 transitions. [2021-05-22 02:05:28,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:28,562 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:28,562 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:28,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable968 [2021-05-22 02:05:28,562 INFO L430 AbstractCegarLoop]: === Iteration 970 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:28,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:28,563 INFO L82 PathProgramCache]: Analyzing trace with hash -993618805, now seen corresponding path program 965 times [2021-05-22 02:05:28,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:28,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813460319] [2021-05-22 02:05:28,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:28,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:28,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:28,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813460319] [2021-05-22 02:05:28,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813460319] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:28,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:28,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:28,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650631846] [2021-05-22 02:05:28,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:28,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:28,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:28,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:28,693 INFO L87 Difference]: Start difference. First operand 5169 states and 24539 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:28,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:28,792 INFO L93 Difference]: Finished difference Result 11619 states and 51691 transitions. [2021-05-22 02:05:28,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:28,793 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:28,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:28,822 INFO L225 Difference]: With dead ends: 11619 [2021-05-22 02:05:28,822 INFO L226 Difference]: Without dead ends: 11077 [2021-05-22 02:05:28,822 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:28,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11077 states. [2021-05-22 02:05:29,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11077 to 5312. [2021-05-22 02:05:29,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5312 states, 5311 states have (on average 4.718132178497458) internal successors, (25058), 5311 states have internal predecessors, (25058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:29,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5312 states to 5312 states and 25058 transitions. [2021-05-22 02:05:29,072 INFO L78 Accepts]: Start accepts. Automaton has 5312 states and 25058 transitions. Word has length 29 [2021-05-22 02:05:29,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:29,072 INFO L482 AbstractCegarLoop]: Abstraction has 5312 states and 25058 transitions. [2021-05-22 02:05:29,072 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:29,072 INFO L276 IsEmpty]: Start isEmpty. Operand 5312 states and 25058 transitions. [2021-05-22 02:05:29,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:29,081 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:29,081 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:29,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable969 [2021-05-22 02:05:29,082 INFO L430 AbstractCegarLoop]: === Iteration 971 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:29,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:29,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1258011497, now seen corresponding path program 966 times [2021-05-22 02:05:29,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:29,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965065031] [2021-05-22 02:05:29,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:29,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:29,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:29,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965065031] [2021-05-22 02:05:29,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965065031] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:29,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:29,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:29,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525579287] [2021-05-22 02:05:29,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:29,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:29,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:29,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:29,197 INFO L87 Difference]: Start difference. First operand 5312 states and 25058 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:29,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:29,317 INFO L93 Difference]: Finished difference Result 11554 states and 51322 transitions. [2021-05-22 02:05:29,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:29,317 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:29,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:29,346 INFO L225 Difference]: With dead ends: 11554 [2021-05-22 02:05:29,346 INFO L226 Difference]: Without dead ends: 10878 [2021-05-22 02:05:29,346 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:29,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10878 states. [2021-05-22 02:05:29,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10878 to 5113. [2021-05-22 02:05:29,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.755672926447574) internal successors, (24311), 5112 states have internal predecessors, (24311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:29,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24311 transitions. [2021-05-22 02:05:29,591 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24311 transitions. Word has length 29 [2021-05-22 02:05:29,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:29,591 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24311 transitions. [2021-05-22 02:05:29,591 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:29,591 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24311 transitions. [2021-05-22 02:05:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:29,600 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:29,600 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:29,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable970 [2021-05-22 02:05:29,600 INFO L430 AbstractCegarLoop]: === Iteration 972 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:29,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:29,600 INFO L82 PathProgramCache]: Analyzing trace with hash -87271063, now seen corresponding path program 967 times [2021-05-22 02:05:29,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:29,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079947138] [2021-05-22 02:05:29,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:29,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:29,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:29,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079947138] [2021-05-22 02:05:29,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079947138] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:29,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:29,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:29,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484174046] [2021-05-22 02:05:29,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:29,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:29,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:29,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:29,719 INFO L87 Difference]: Start difference. First operand 5113 states and 24311 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:29,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:29,833 INFO L93 Difference]: Finished difference Result 11202 states and 49954 transitions. [2021-05-22 02:05:29,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:29,833 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:29,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:29,862 INFO L225 Difference]: With dead ends: 11202 [2021-05-22 02:05:29,862 INFO L226 Difference]: Without dead ends: 10787 [2021-05-22 02:05:29,862 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:29,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10787 states. [2021-05-22 02:05:30,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10787 to 5225. [2021-05-22 02:05:30,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 4.745597243491577) internal successors, (24791), 5224 states have internal predecessors, (24791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:30,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 24791 transitions. [2021-05-22 02:05:30,109 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 24791 transitions. Word has length 29 [2021-05-22 02:05:30,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:30,110 INFO L482 AbstractCegarLoop]: Abstraction has 5225 states and 24791 transitions. [2021-05-22 02:05:30,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:30,110 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 24791 transitions. [2021-05-22 02:05:30,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:30,118 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:30,118 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:30,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable971 [2021-05-22 02:05:30,119 INFO L430 AbstractCegarLoop]: === Iteration 973 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:30,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:30,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1667549545, now seen corresponding path program 968 times [2021-05-22 02:05:30,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:30,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648344009] [2021-05-22 02:05:30,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:30,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:30,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648344009] [2021-05-22 02:05:30,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648344009] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:30,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:30,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:30,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265199412] [2021-05-22 02:05:30,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:30,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:30,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:30,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:30,238 INFO L87 Difference]: Start difference. First operand 5225 states and 24791 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:30,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:30,331 INFO L93 Difference]: Finished difference Result 11329 states and 50433 transitions. [2021-05-22 02:05:30,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:30,331 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:30,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:30,359 INFO L225 Difference]: With dead ends: 11329 [2021-05-22 02:05:30,359 INFO L226 Difference]: Without dead ends: 10707 [2021-05-22 02:05:30,359 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:30,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10707 states. [2021-05-22 02:05:30,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10707 to 5145. [2021-05-22 02:05:30,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.75097200622084) internal successors, (24439), 5144 states have internal predecessors, (24439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:30,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24439 transitions. [2021-05-22 02:05:30,600 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24439 transitions. Word has length 29 [2021-05-22 02:05:30,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:30,600 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24439 transitions. [2021-05-22 02:05:30,600 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:30,600 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24439 transitions. [2021-05-22 02:05:30,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:30,609 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:30,609 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:30,609 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable972 [2021-05-22 02:05:30,609 INFO L430 AbstractCegarLoop]: === Iteration 974 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:30,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:30,610 INFO L82 PathProgramCache]: Analyzing trace with hash -2483065, now seen corresponding path program 969 times [2021-05-22 02:05:30,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:30,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310434108] [2021-05-22 02:05:30,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:30,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:30,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:30,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310434108] [2021-05-22 02:05:30,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310434108] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:30,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:30,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:30,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886049006] [2021-05-22 02:05:30,720 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:30,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:30,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:30,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:30,721 INFO L87 Difference]: Start difference. First operand 5145 states and 24439 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:30,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:30,832 INFO L93 Difference]: Finished difference Result 11027 states and 49171 transitions. [2021-05-22 02:05:30,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:30,832 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:30,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:30,860 INFO L225 Difference]: With dead ends: 11027 [2021-05-22 02:05:30,860 INFO L226 Difference]: Without dead ends: 10612 [2021-05-22 02:05:30,860 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:30,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10612 states. [2021-05-22 02:05:31,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10612 to 5177. [2021-05-22 02:05:31,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5177 states, 5176 states have (on average 4.743238021638331) internal successors, (24551), 5176 states have internal predecessors, (24551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:31,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5177 states to 5177 states and 24551 transitions. [2021-05-22 02:05:31,103 INFO L78 Accepts]: Start accepts. Automaton has 5177 states and 24551 transitions. Word has length 29 [2021-05-22 02:05:31,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:31,103 INFO L482 AbstractCegarLoop]: Abstraction has 5177 states and 24551 transitions. [2021-05-22 02:05:31,103 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:31,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5177 states and 24551 transitions. [2021-05-22 02:05:31,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:31,112 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:31,112 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:31,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable973 [2021-05-22 02:05:31,112 INFO L430 AbstractCegarLoop]: === Iteration 975 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:31,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:31,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1890363237, now seen corresponding path program 970 times [2021-05-22 02:05:31,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:31,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074169323] [2021-05-22 02:05:31,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:31,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:31,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074169323] [2021-05-22 02:05:31,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074169323] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:31,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:31,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:31,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984494112] [2021-05-22 02:05:31,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:31,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:31,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:31,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:31,254 INFO L87 Difference]: Start difference. First operand 5177 states and 24551 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:31,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:31,379 INFO L93 Difference]: Finished difference Result 11027 states and 49139 transitions. [2021-05-22 02:05:31,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:31,379 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:31,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:31,413 INFO L225 Difference]: With dead ends: 11027 [2021-05-22 02:05:31,413 INFO L226 Difference]: Without dead ends: 10580 [2021-05-22 02:05:31,413 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:31,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10580 states. [2021-05-22 02:05:31,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10580 to 5145. [2021-05-22 02:05:31,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.747861586314152) internal successors, (24423), 5144 states have internal predecessors, (24423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:31,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24423 transitions. [2021-05-22 02:05:31,670 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24423 transitions. Word has length 29 [2021-05-22 02:05:31,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:31,670 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24423 transitions. [2021-05-22 02:05:31,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:31,670 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24423 transitions. [2021-05-22 02:05:31,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:31,679 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:31,679 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:31,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable974 [2021-05-22 02:05:31,679 INFO L430 AbstractCegarLoop]: === Iteration 976 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:31,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:31,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1683000509, now seen corresponding path program 971 times [2021-05-22 02:05:31,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:31,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776650150] [2021-05-22 02:05:31,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:31,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:31,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:31,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776650150] [2021-05-22 02:05:31,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776650150] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:31,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:31,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:31,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438426374] [2021-05-22 02:05:31,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:31,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:31,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:31,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:31,798 INFO L87 Difference]: Start difference. First operand 5145 states and 24423 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:31,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:31,896 INFO L93 Difference]: Finished difference Result 11329 states and 50433 transitions. [2021-05-22 02:05:31,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:31,896 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:31,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:31,925 INFO L225 Difference]: With dead ends: 11329 [2021-05-22 02:05:31,925 INFO L226 Difference]: Without dead ends: 10787 [2021-05-22 02:05:31,925 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:32,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10787 states. [2021-05-22 02:05:32,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10787 to 5225. [2021-05-22 02:05:32,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 4.730283307810107) internal successors, (24711), 5224 states have internal predecessors, (24711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:32,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 24711 transitions. [2021-05-22 02:05:32,172 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 24711 transitions. Word has length 29 [2021-05-22 02:05:32,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:32,172 INFO L482 AbstractCegarLoop]: Abstraction has 5225 states and 24711 transitions. [2021-05-22 02:05:32,172 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:32,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 24711 transitions. [2021-05-22 02:05:32,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:32,181 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:32,181 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:32,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable975 [2021-05-22 02:05:32,181 INFO L430 AbstractCegarLoop]: === Iteration 977 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:32,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:32,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1889808475, now seen corresponding path program 972 times [2021-05-22 02:05:32,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:32,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215315548] [2021-05-22 02:05:32,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:32,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:32,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215315548] [2021-05-22 02:05:32,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215315548] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:32,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:32,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:32,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060411665] [2021-05-22 02:05:32,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:32,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:32,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:32,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:32,303 INFO L87 Difference]: Start difference. First operand 5225 states and 24711 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:32,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:32,410 INFO L93 Difference]: Finished difference Result 11202 states and 49826 transitions. [2021-05-22 02:05:32,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:32,410 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:32,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:32,437 INFO L225 Difference]: With dead ends: 11202 [2021-05-22 02:05:32,437 INFO L226 Difference]: Without dead ends: 10675 [2021-05-22 02:05:32,437 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:32,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10675 states. [2021-05-22 02:05:32,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10675 to 5113. [2021-05-22 02:05:32,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.752543035993741) internal successors, (24295), 5112 states have internal predecessors, (24295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:32,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24295 transitions. [2021-05-22 02:05:32,678 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24295 transitions. Word has length 29 [2021-05-22 02:05:32,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:32,679 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24295 transitions. [2021-05-22 02:05:32,679 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:32,679 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24295 transitions. [2021-05-22 02:05:32,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:32,687 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:32,687 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:32,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable976 [2021-05-22 02:05:32,688 INFO L430 AbstractCegarLoop]: === Iteration 978 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:32,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:32,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1183671175, now seen corresponding path program 973 times [2021-05-22 02:05:32,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:32,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397719894] [2021-05-22 02:05:32,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:32,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:32,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:32,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:32,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397719894] [2021-05-22 02:05:32,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397719894] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:32,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:32,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:32,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677021674] [2021-05-22 02:05:32,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:32,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:32,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:32,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:32,809 INFO L87 Difference]: Start difference. First operand 5113 states and 24295 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:32,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:32,923 INFO L93 Difference]: Finished difference Result 10960 states and 48910 transitions. [2021-05-22 02:05:32,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:32,923 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:32,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:32,951 INFO L225 Difference]: With dead ends: 10960 [2021-05-22 02:05:32,952 INFO L226 Difference]: Without dead ends: 10545 [2021-05-22 02:05:32,952 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:33,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10545 states. [2021-05-22 02:05:33,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10545 to 5177. [2021-05-22 02:05:33,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5177 states, 5176 states have (on average 4.743238021638331) internal successors, (24551), 5176 states have internal predecessors, (24551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:33,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5177 states to 5177 states and 24551 transitions. [2021-05-22 02:05:33,197 INFO L78 Accepts]: Start accepts. Automaton has 5177 states and 24551 transitions. Word has length 29 [2021-05-22 02:05:33,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:33,197 INFO L482 AbstractCegarLoop]: Abstraction has 5177 states and 24551 transitions. [2021-05-22 02:05:33,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:33,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5177 states and 24551 transitions. [2021-05-22 02:05:33,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:33,206 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:33,206 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:33,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable977 [2021-05-22 02:05:33,206 INFO L430 AbstractCegarLoop]: === Iteration 979 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:33,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:33,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1900334121, now seen corresponding path program 974 times [2021-05-22 02:05:33,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:33,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724500014] [2021-05-22 02:05:33,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:33,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:33,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724500014] [2021-05-22 02:05:33,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724500014] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:33,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:33,327 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:33,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771594325] [2021-05-22 02:05:33,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:33,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:33,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:33,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:33,328 INFO L87 Difference]: Start difference. First operand 5177 states and 24551 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:33,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:33,460 INFO L93 Difference]: Finished difference Result 11022 states and 49131 transitions. [2021-05-22 02:05:33,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:33,460 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:33,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:33,487 INFO L225 Difference]: With dead ends: 11022 [2021-05-22 02:05:33,487 INFO L226 Difference]: Without dead ends: 10497 [2021-05-22 02:05:33,488 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 154.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:33,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10497 states. [2021-05-22 02:05:33,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10497 to 5129. [2021-05-22 02:05:33,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.750195007800312) internal successors, (24359), 5128 states have internal predecessors, (24359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:33,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24359 transitions. [2021-05-22 02:05:33,735 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24359 transitions. Word has length 29 [2021-05-22 02:05:33,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:33,735 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24359 transitions. [2021-05-22 02:05:33,735 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:33,735 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24359 transitions. [2021-05-22 02:05:33,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:33,744 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:33,744 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:33,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable978 [2021-05-22 02:05:33,744 INFO L430 AbstractCegarLoop]: === Iteration 980 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:33,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:33,744 INFO L82 PathProgramCache]: Analyzing trace with hash 702769129, now seen corresponding path program 975 times [2021-05-22 02:05:33,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:33,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129807906] [2021-05-22 02:05:33,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:33,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:33,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129807906] [2021-05-22 02:05:33,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129807906] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:33,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:33,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:33,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038524064] [2021-05-22 02:05:33,857 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:33,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:33,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:33,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:33,858 INFO L87 Difference]: Start difference. First operand 5129 states and 24359 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:33,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:33,968 INFO L93 Difference]: Finished difference Result 10882 states and 48545 transitions. [2021-05-22 02:05:33,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:33,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:33,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:33,996 INFO L225 Difference]: With dead ends: 10882 [2021-05-22 02:05:33,996 INFO L226 Difference]: Without dead ends: 10467 [2021-05-22 02:05:33,996 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:34,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10467 states. [2021-05-22 02:05:34,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10467 to 5161. [2021-05-22 02:05:34,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.742441860465116) internal successors, (24471), 5160 states have internal predecessors, (24471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:34,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24471 transitions. [2021-05-22 02:05:34,240 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24471 transitions. Word has length 29 [2021-05-22 02:05:34,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:34,240 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24471 transitions. [2021-05-22 02:05:34,240 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:34,240 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24471 transitions. [2021-05-22 02:05:34,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:34,249 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:34,249 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:34,249 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable979 [2021-05-22 02:05:34,249 INFO L430 AbstractCegarLoop]: === Iteration 981 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:34,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:34,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1114177125, now seen corresponding path program 976 times [2021-05-22 02:05:34,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:34,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088571285] [2021-05-22 02:05:34,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:34,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:34,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:34,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088571285] [2021-05-22 02:05:34,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088571285] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:34,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:34,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:34,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327367822] [2021-05-22 02:05:34,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:34,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:34,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:34,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:34,364 INFO L87 Difference]: Start difference. First operand 5161 states and 24471 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:34,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:34,460 INFO L93 Difference]: Finished difference Result 10882 states and 48513 transitions. [2021-05-22 02:05:34,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:34,460 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:34,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:34,488 INFO L225 Difference]: With dead ends: 10882 [2021-05-22 02:05:34,488 INFO L226 Difference]: Without dead ends: 10435 [2021-05-22 02:05:34,488 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:34,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2021-05-22 02:05:34,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 5129. [2021-05-22 02:05:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.74707488299532) internal successors, (24343), 5128 states have internal predecessors, (24343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:34,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24343 transitions. [2021-05-22 02:05:34,726 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24343 transitions. Word has length 29 [2021-05-22 02:05:34,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:34,726 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24343 transitions. [2021-05-22 02:05:34,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:34,726 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24343 transitions. [2021-05-22 02:05:34,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:34,735 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:34,735 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:34,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable980 [2021-05-22 02:05:34,735 INFO L430 AbstractCegarLoop]: === Iteration 982 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:34,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:34,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1249872613, now seen corresponding path program 977 times [2021-05-22 02:05:34,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:34,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156022974] [2021-05-22 02:05:34,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:34,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:34,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156022974] [2021-05-22 02:05:34,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156022974] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:34,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:34,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:34,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123052159] [2021-05-22 02:05:34,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:34,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:34,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:34,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:34,856 INFO L87 Difference]: Start difference. First operand 5129 states and 24343 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:34,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:34,968 INFO L93 Difference]: Finished difference Result 11022 states and 49147 transitions. [2021-05-22 02:05:34,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:34,968 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:34,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:34,995 INFO L225 Difference]: With dead ends: 11022 [2021-05-22 02:05:34,996 INFO L226 Difference]: Without dead ends: 10545 [2021-05-22 02:05:34,996 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:35,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10545 states. [2021-05-22 02:05:35,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10545 to 5177. [2021-05-22 02:05:35,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5177 states, 5176 states have (on average 4.737055641421947) internal successors, (24519), 5176 states have internal predecessors, (24519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:35,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5177 states to 5177 states and 24519 transitions. [2021-05-22 02:05:35,233 INFO L78 Accepts]: Start accepts. Automaton has 5177 states and 24519 transitions. Word has length 29 [2021-05-22 02:05:35,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:35,233 INFO L482 AbstractCegarLoop]: Abstraction has 5177 states and 24519 transitions. [2021-05-22 02:05:35,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:35,233 INFO L276 IsEmpty]: Start isEmpty. Operand 5177 states and 24519 transitions. [2021-05-22 02:05:35,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:35,242 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:35,242 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:35,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable981 [2021-05-22 02:05:35,242 INFO L430 AbstractCegarLoop]: === Iteration 983 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:35,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:35,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1964032057, now seen corresponding path program 978 times [2021-05-22 02:05:35,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:35,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81496979] [2021-05-22 02:05:35,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:35,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:35,373 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:35,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81496979] [2021-05-22 02:05:35,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81496979] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:35,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:35,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:35,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771065839] [2021-05-22 02:05:35,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:35,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:35,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:35,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:35,373 INFO L87 Difference]: Start difference. First operand 5177 states and 24519 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:35,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:35,486 INFO L93 Difference]: Finished difference Result 10960 states and 48830 transitions. [2021-05-22 02:05:35,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:35,487 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:35,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:35,515 INFO L225 Difference]: With dead ends: 10960 [2021-05-22 02:05:35,515 INFO L226 Difference]: Without dead ends: 10481 [2021-05-22 02:05:35,515 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:35,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10481 states. [2021-05-22 02:05:35,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10481 to 5113. [2021-05-22 02:05:35,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.750978090766823) internal successors, (24287), 5112 states have internal predecessors, (24287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:35,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24287 transitions. [2021-05-22 02:05:35,755 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24287 transitions. Word has length 29 [2021-05-22 02:05:35,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:35,756 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24287 transitions. [2021-05-22 02:05:35,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:35,756 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24287 transitions. [2021-05-22 02:05:35,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:35,764 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:35,764 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:35,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable982 [2021-05-22 02:05:35,764 INFO L430 AbstractCegarLoop]: === Iteration 984 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:35,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:35,765 INFO L82 PathProgramCache]: Analyzing trace with hash -437139645, now seen corresponding path program 979 times [2021-05-22 02:05:35,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:35,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267472089] [2021-05-22 02:05:35,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:35,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:35,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:35,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267472089] [2021-05-22 02:05:35,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267472089] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:35,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:35,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:35,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319398107] [2021-05-22 02:05:35,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:35,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:35,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:35,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:35,880 INFO L87 Difference]: Start difference. First operand 5113 states and 24287 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:35,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:35,990 INFO L93 Difference]: Finished difference Result 11619 states and 51707 transitions. [2021-05-22 02:05:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:35,990 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:35,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:36,018 INFO L225 Difference]: With dead ends: 11619 [2021-05-22 02:05:36,018 INFO L226 Difference]: Without dead ends: 11077 [2021-05-22 02:05:36,018 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:36,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11077 states. [2021-05-22 02:05:36,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11077 to 5312. [2021-05-22 02:05:36,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5312 states, 5311 states have (on average 4.721144793824139) internal successors, (25074), 5311 states have internal predecessors, (25074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:36,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5312 states to 5312 states and 25074 transitions. [2021-05-22 02:05:36,267 INFO L78 Accepts]: Start accepts. Automaton has 5312 states and 25074 transitions. Word has length 29 [2021-05-22 02:05:36,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:36,267 INFO L482 AbstractCegarLoop]: Abstraction has 5312 states and 25074 transitions. [2021-05-22 02:05:36,267 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:36,267 INFO L276 IsEmpty]: Start isEmpty. Operand 5312 states and 25074 transitions. [2021-05-22 02:05:36,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:36,276 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:36,276 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:36,276 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable983 [2021-05-22 02:05:36,276 INFO L430 AbstractCegarLoop]: === Iteration 985 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:36,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:36,276 INFO L82 PathProgramCache]: Analyzing trace with hash 643922981, now seen corresponding path program 980 times [2021-05-22 02:05:36,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:36,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609963165] [2021-05-22 02:05:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:36,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:36,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609963165] [2021-05-22 02:05:36,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609963165] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:36,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:36,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:36,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592793888] [2021-05-22 02:05:36,389 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:36,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:36,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:36,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:36,390 INFO L87 Difference]: Start difference. First operand 5312 states and 25074 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:36,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:36,494 INFO L93 Difference]: Finished difference Result 11554 states and 51338 transitions. [2021-05-22 02:05:36,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:36,494 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:36,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:36,521 INFO L225 Difference]: With dead ends: 11554 [2021-05-22 02:05:36,522 INFO L226 Difference]: Without dead ends: 10934 [2021-05-22 02:05:36,522 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:36,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10934 states. [2021-05-22 02:05:36,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10934 to 5169. [2021-05-22 02:05:36,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.740518575851393) internal successors, (24499), 5168 states have internal predecessors, (24499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:36,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24499 transitions. [2021-05-22 02:05:36,764 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24499 transitions. Word has length 29 [2021-05-22 02:05:36,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:36,764 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24499 transitions. [2021-05-22 02:05:36,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:36,764 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24499 transitions. [2021-05-22 02:05:36,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:36,773 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:36,773 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:36,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable984 [2021-05-22 02:05:36,773 INFO L430 AbstractCegarLoop]: === Iteration 986 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:36,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:36,773 INFO L82 PathProgramCache]: Analyzing trace with hash -918041691, now seen corresponding path program 981 times [2021-05-22 02:05:36,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:36,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985059297] [2021-05-22 02:05:36,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:36,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:36,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:36,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985059297] [2021-05-22 02:05:36,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985059297] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:36,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:36,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:36,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653062209] [2021-05-22 02:05:36,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:36,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:36,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:36,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:36,895 INFO L87 Difference]: Start difference. First operand 5169 states and 24499 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:36,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:36,985 INFO L93 Difference]: Finished difference Result 11494 states and 51120 transitions. [2021-05-22 02:05:36,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:36,985 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:36,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:37,013 INFO L225 Difference]: With dead ends: 11494 [2021-05-22 02:05:37,013 INFO L226 Difference]: Without dead ends: 10952 [2021-05-22 02:05:37,013 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:37,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10952 states. [2021-05-22 02:05:37,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10952 to 5249. [2021-05-22 02:05:37,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5249 states, 5248 states have (on average 4.723132621951219) internal successors, (24787), 5248 states have internal predecessors, (24787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:37,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 24787 transitions. [2021-05-22 02:05:37,260 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 24787 transitions. Word has length 29 [2021-05-22 02:05:37,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:37,260 INFO L482 AbstractCegarLoop]: Abstraction has 5249 states and 24787 transitions. [2021-05-22 02:05:37,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:37,260 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 24787 transitions. [2021-05-22 02:05:37,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:37,269 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:37,269 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:37,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable985 [2021-05-22 02:05:37,269 INFO L430 AbstractCegarLoop]: === Iteration 987 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:37,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:37,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1688679333, now seen corresponding path program 982 times [2021-05-22 02:05:37,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:37,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685530501] [2021-05-22 02:05:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:37,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:37,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685530501] [2021-05-22 02:05:37,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685530501] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:37,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:37,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:37,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490546421] [2021-05-22 02:05:37,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:37,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:37,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:37,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:37,391 INFO L87 Difference]: Start difference. First operand 5249 states and 24787 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:37,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:37,486 INFO L93 Difference]: Finished difference Result 11367 states and 50513 transitions. [2021-05-22 02:05:37,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:37,486 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:37,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:37,514 INFO L225 Difference]: With dead ends: 11367 [2021-05-22 02:05:37,514 INFO L226 Difference]: Without dead ends: 10872 [2021-05-22 02:05:37,515 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:37,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10872 states. [2021-05-22 02:05:37,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10872 to 5169. [2021-05-22 02:05:37,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.732778637770898) internal successors, (24459), 5168 states have internal predecessors, (24459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:37,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24459 transitions. [2021-05-22 02:05:37,763 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24459 transitions. Word has length 29 [2021-05-22 02:05:37,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:37,764 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24459 transitions. [2021-05-22 02:05:37,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:37,764 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24459 transitions. [2021-05-22 02:05:37,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:37,773 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:37,773 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:37,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable986 [2021-05-22 02:05:37,773 INFO L430 AbstractCegarLoop]: === Iteration 988 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:37,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:37,773 INFO L82 PathProgramCache]: Analyzing trace with hash -530036729, now seen corresponding path program 983 times [2021-05-22 02:05:37,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:37,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480167628] [2021-05-22 02:05:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:37,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:37,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:37,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480167628] [2021-05-22 02:05:37,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480167628] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:37,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:37,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:37,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598572874] [2021-05-22 02:05:37,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:37,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:37,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:37,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:37,958 INFO L87 Difference]: Start difference. First operand 5169 states and 24459 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:38,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:38,086 INFO L93 Difference]: Finished difference Result 11332 states and 50420 transitions. [2021-05-22 02:05:38,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:38,086 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:38,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:38,113 INFO L225 Difference]: With dead ends: 11332 [2021-05-22 02:05:38,113 INFO L226 Difference]: Without dead ends: 10855 [2021-05-22 02:05:38,114 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 201.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:38,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10855 states. [2021-05-22 02:05:38,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10855 to 5217. [2021-05-22 02:05:38,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 4.722967791411043) internal successors, (24635), 5216 states have internal predecessors, (24635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:38,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 24635 transitions. [2021-05-22 02:05:38,359 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 24635 transitions. Word has length 29 [2021-05-22 02:05:38,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:38,359 INFO L482 AbstractCegarLoop]: Abstraction has 5217 states and 24635 transitions. [2021-05-22 02:05:38,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:38,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 24635 transitions. [2021-05-22 02:05:38,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:38,368 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:38,368 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:38,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable987 [2021-05-22 02:05:38,368 INFO L430 AbstractCegarLoop]: === Iteration 989 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:38,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:38,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1376833691, now seen corresponding path program 984 times [2021-05-22 02:05:38,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:38,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821682387] [2021-05-22 02:05:38,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:38,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:38,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821682387] [2021-05-22 02:05:38,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821682387] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:38,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:38,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:38,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623158945] [2021-05-22 02:05:38,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:38,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:38,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:38,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:38,488 INFO L87 Difference]: Start difference. First operand 5217 states and 24635 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:38,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:38,584 INFO L93 Difference]: Finished difference Result 11270 states and 50103 transitions. [2021-05-22 02:05:38,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:38,584 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:38,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:38,612 INFO L225 Difference]: With dead ends: 11270 [2021-05-22 02:05:38,612 INFO L226 Difference]: Without dead ends: 10727 [2021-05-22 02:05:38,612 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:38,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10727 states. [2021-05-22 02:05:38,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10727 to 5089. [2021-05-22 02:05:38,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 4.7560927672955975) internal successors, (24199), 5088 states have internal predecessors, (24199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:38,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 24199 transitions. [2021-05-22 02:05:38,855 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 24199 transitions. Word has length 29 [2021-05-22 02:05:38,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:38,855 INFO L482 AbstractCegarLoop]: Abstraction has 5089 states and 24199 transitions. [2021-05-22 02:05:38,855 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:38,856 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 24199 transitions. [2021-05-22 02:05:38,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:38,865 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:38,865 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:38,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable988 [2021-05-22 02:05:38,865 INFO L430 AbstractCegarLoop]: === Iteration 990 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:38,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:38,865 INFO L82 PathProgramCache]: Analyzing trace with hash 351681769, now seen corresponding path program 985 times [2021-05-22 02:05:38,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:38,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62675562] [2021-05-22 02:05:38,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:39,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:39,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:39,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62675562] [2021-05-22 02:05:39,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62675562] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:39,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:39,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:39,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022128914] [2021-05-22 02:05:39,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:39,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:39,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:39,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:39,007 INFO L87 Difference]: Start difference. First operand 5089 states and 24199 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:39,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:39,128 INFO L93 Difference]: Finished difference Result 11455 states and 51149 transitions. [2021-05-22 02:05:39,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:39,129 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:39,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:39,157 INFO L225 Difference]: With dead ends: 11455 [2021-05-22 02:05:39,157 INFO L226 Difference]: Without dead ends: 11040 [2021-05-22 02:05:39,158 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 157.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:39,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11040 states. [2021-05-22 02:05:39,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11040 to 5253. [2021-05-22 02:05:39,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5253 states, 5252 states have (on average 4.747715156130997) internal successors, (24935), 5252 states have internal predecessors, (24935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:39,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5253 states to 5253 states and 24935 transitions. [2021-05-22 02:05:39,405 INFO L78 Accepts]: Start accepts. Automaton has 5253 states and 24935 transitions. Word has length 29 [2021-05-22 02:05:39,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:39,405 INFO L482 AbstractCegarLoop]: Abstraction has 5253 states and 24935 transitions. [2021-05-22 02:05:39,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:39,405 INFO L276 IsEmpty]: Start isEmpty. Operand 5253 states and 24935 transitions. [2021-05-22 02:05:39,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:39,414 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:39,414 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:39,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable989 [2021-05-22 02:05:39,414 INFO L430 AbstractCegarLoop]: === Iteration 991 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:39,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:39,414 INFO L82 PathProgramCache]: Analyzing trace with hash 2106502377, now seen corresponding path program 986 times [2021-05-22 02:05:39,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:39,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172724264] [2021-05-22 02:05:39,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:39,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:39,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172724264] [2021-05-22 02:05:39,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172724264] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:39,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:39,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:39,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248351994] [2021-05-22 02:05:39,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:39,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:39,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:39,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:39,535 INFO L87 Difference]: Start difference. First operand 5253 states and 24935 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:39,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:39,630 INFO L93 Difference]: Finished difference Result 11582 states and 51628 transitions. [2021-05-22 02:05:39,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:39,630 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:39,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:39,658 INFO L225 Difference]: With dead ends: 11582 [2021-05-22 02:05:39,658 INFO L226 Difference]: Without dead ends: 10960 [2021-05-22 02:05:39,658 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:39,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10960 states. [2021-05-22 02:05:39,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10960 to 5173. [2021-05-22 02:05:39,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 4.7515467904099) internal successors, (24575), 5172 states have internal predecessors, (24575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:39,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 24575 transitions. [2021-05-22 02:05:39,904 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 24575 transitions. Word has length 29 [2021-05-22 02:05:39,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:39,904 INFO L482 AbstractCegarLoop]: Abstraction has 5173 states and 24575 transitions. [2021-05-22 02:05:39,904 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:39,904 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 24575 transitions. [2021-05-22 02:05:39,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:39,912 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:39,912 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:39,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable990 [2021-05-22 02:05:39,913 INFO L430 AbstractCegarLoop]: === Iteration 992 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:39,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:39,913 INFO L82 PathProgramCache]: Analyzing trace with hash 131879913, now seen corresponding path program 987 times [2021-05-22 02:05:39,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:39,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997640542] [2021-05-22 02:05:39,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:40,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:40,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997640542] [2021-05-22 02:05:40,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997640542] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:40,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:40,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:40,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728773689] [2021-05-22 02:05:40,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:40,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:40,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:40,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:40,032 INFO L87 Difference]: Start difference. First operand 5173 states and 24575 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:40,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:40,139 INFO L93 Difference]: Finished difference Result 11358 states and 50707 transitions. [2021-05-22 02:05:40,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:40,140 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:40,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:40,167 INFO L225 Difference]: With dead ends: 11358 [2021-05-22 02:05:40,167 INFO L226 Difference]: Without dead ends: 10943 [2021-05-22 02:05:40,167 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:40,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10943 states. [2021-05-22 02:05:40,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10943 to 5221. [2021-05-22 02:05:40,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5221 states, 5220 states have (on average 4.741570881226053) internal successors, (24751), 5220 states have internal predecessors, (24751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:40,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 24751 transitions. [2021-05-22 02:05:40,409 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 24751 transitions. Word has length 29 [2021-05-22 02:05:40,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:40,409 INFO L482 AbstractCegarLoop]: Abstraction has 5221 states and 24751 transitions. [2021-05-22 02:05:40,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:40,409 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 24751 transitions. [2021-05-22 02:05:40,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:40,418 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:40,418 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:40,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable991 [2021-05-22 02:05:40,418 INFO L430 AbstractCegarLoop]: === Iteration 993 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:40,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:40,418 INFO L82 PathProgramCache]: Analyzing trace with hash 848542859, now seen corresponding path program 988 times [2021-05-22 02:05:40,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:40,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381089034] [2021-05-22 02:05:40,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:40,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:40,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:40,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381089034] [2021-05-22 02:05:40,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381089034] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:40,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:40,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:40,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762600975] [2021-05-22 02:05:40,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:40,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:40,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:40,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:40,538 INFO L87 Difference]: Start difference. First operand 5221 states and 24751 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:40,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:40,647 INFO L93 Difference]: Finished difference Result 11420 states and 50928 transitions. [2021-05-22 02:05:40,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:40,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:40,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:40,675 INFO L225 Difference]: With dead ends: 11420 [2021-05-22 02:05:40,676 INFO L226 Difference]: Without dead ends: 10895 [2021-05-22 02:05:40,676 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:40,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10895 states. [2021-05-22 02:05:40,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10895 to 5173. [2021-05-22 02:05:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 4.746906419180201) internal successors, (24551), 5172 states have internal predecessors, (24551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 24551 transitions. [2021-05-22 02:05:40,919 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 24551 transitions. Word has length 29 [2021-05-22 02:05:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:40,919 INFO L482 AbstractCegarLoop]: Abstraction has 5173 states and 24551 transitions. [2021-05-22 02:05:40,920 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 24551 transitions. [2021-05-22 02:05:40,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:40,928 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:40,928 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:40,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable992 [2021-05-22 02:05:40,928 INFO L430 AbstractCegarLoop]: === Iteration 994 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:40,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:40,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1363198837, now seen corresponding path program 989 times [2021-05-22 02:05:40,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:40,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094925859] [2021-05-22 02:05:40,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:41,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:41,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:41,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094925859] [2021-05-22 02:05:41,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094925859] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:41,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:41,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:41,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785924870] [2021-05-22 02:05:41,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:41,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:41,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:41,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:41,041 INFO L87 Difference]: Start difference. First operand 5173 states and 24551 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:41,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:41,138 INFO L93 Difference]: Finished difference Result 11707 states and 52143 transitions. [2021-05-22 02:05:41,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:41,138 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:41,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:41,167 INFO L225 Difference]: With dead ends: 11707 [2021-05-22 02:05:41,167 INFO L226 Difference]: Without dead ends: 11165 [2021-05-22 02:05:41,167 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:41,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11165 states. [2021-05-22 02:05:41,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11165 to 5316. [2021-05-22 02:05:41,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 5315 states have (on average 4.716839134524929) internal successors, (25070), 5315 states have internal predecessors, (25070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:41,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 25070 transitions. [2021-05-22 02:05:41,413 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 25070 transitions. Word has length 29 [2021-05-22 02:05:41,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:41,413 INFO L482 AbstractCegarLoop]: Abstraction has 5316 states and 25070 transitions. [2021-05-22 02:05:41,413 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:41,413 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 25070 transitions. [2021-05-22 02:05:41,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:41,422 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:41,422 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:41,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable993 [2021-05-22 02:05:41,422 INFO L430 AbstractCegarLoop]: === Iteration 995 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:41,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:41,422 INFO L82 PathProgramCache]: Analyzing trace with hash 888431465, now seen corresponding path program 990 times [2021-05-22 02:05:41,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:41,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63085750] [2021-05-22 02:05:41,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:41,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:41,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:41,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63085750] [2021-05-22 02:05:41,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63085750] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:41,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:41,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:41,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822942174] [2021-05-22 02:05:41,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:41,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:41,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:41,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:41,536 INFO L87 Difference]: Start difference. First operand 5316 states and 25070 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:41,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:41,650 INFO L93 Difference]: Finished difference Result 11642 states and 51774 transitions. [2021-05-22 02:05:41,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:41,650 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:41,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:41,677 INFO L225 Difference]: With dead ends: 11642 [2021-05-22 02:05:41,678 INFO L226 Difference]: Without dead ends: 10966 [2021-05-22 02:05:41,678 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:41,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10966 states. [2021-05-22 02:05:41,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10966 to 5117. [2021-05-22 02:05:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.753518373729476) internal successors, (24319), 5116 states have internal predecessors, (24319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:41,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24319 transitions. [2021-05-22 02:05:41,924 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24319 transitions. Word has length 29 [2021-05-22 02:05:41,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:41,924 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24319 transitions. [2021-05-22 02:05:41,924 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:41,924 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24319 transitions. [2021-05-22 02:05:41,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:41,933 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:41,933 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:41,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable994 [2021-05-22 02:05:41,933 INFO L430 AbstractCegarLoop]: === Iteration 996 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:41,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:41,933 INFO L82 PathProgramCache]: Analyzing trace with hash -155752565, now seen corresponding path program 991 times [2021-05-22 02:05:41,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:41,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694727304] [2021-05-22 02:05:41,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:42,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:42,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:42,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694727304] [2021-05-22 02:05:42,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694727304] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:42,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:42,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:42,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307753103] [2021-05-22 02:05:42,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:42,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:42,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:42,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:42,055 INFO L87 Difference]: Start difference. First operand 5117 states and 24319 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:42,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:42,170 INFO L93 Difference]: Finished difference Result 11306 states and 50506 transitions. [2021-05-22 02:05:42,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:42,170 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:42,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:42,199 INFO L225 Difference]: With dead ends: 11306 [2021-05-22 02:05:42,199 INFO L226 Difference]: Without dead ends: 10891 [2021-05-22 02:05:42,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:42,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10891 states. [2021-05-22 02:05:42,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10891 to 5237. [2021-05-22 02:05:42,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5236 states have (on average 4.744652406417113) internal successors, (24843), 5236 states have internal predecessors, (24843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:42,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 24843 transitions. [2021-05-22 02:05:42,446 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 24843 transitions. Word has length 29 [2021-05-22 02:05:42,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:42,446 INFO L482 AbstractCegarLoop]: Abstraction has 5237 states and 24843 transitions. [2021-05-22 02:05:42,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:42,446 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 24843 transitions. [2021-05-22 02:05:42,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:42,455 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:42,455 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:42,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable995 [2021-05-22 02:05:42,455 INFO L430 AbstractCegarLoop]: === Iteration 997 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:42,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:42,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1599068043, now seen corresponding path program 992 times [2021-05-22 02:05:42,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:42,455 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533281010] [2021-05-22 02:05:42,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:42,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:42,578 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:42,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533281010] [2021-05-22 02:05:42,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533281010] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:42,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:42,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:42,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945412021] [2021-05-22 02:05:42,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:42,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:42,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:42,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:42,579 INFO L87 Difference]: Start difference. First operand 5237 states and 24843 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:42,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:42,675 INFO L93 Difference]: Finished difference Result 11433 states and 50985 transitions. [2021-05-22 02:05:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:42,675 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:42,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:42,704 INFO L225 Difference]: With dead ends: 11433 [2021-05-22 02:05:42,704 INFO L226 Difference]: Without dead ends: 10811 [2021-05-22 02:05:42,704 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:42,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10811 states. [2021-05-22 02:05:42,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10811 to 5157. [2021-05-22 02:05:42,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 4.7484484096198605) internal successors, (24483), 5156 states have internal predecessors, (24483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:42,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 24483 transitions. [2021-05-22 02:05:42,952 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 24483 transitions. Word has length 29 [2021-05-22 02:05:42,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:42,952 INFO L482 AbstractCegarLoop]: Abstraction has 5157 states and 24483 transitions. [2021-05-22 02:05:42,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:42,952 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 24483 transitions. [2021-05-22 02:05:42,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:42,961 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:42,961 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:42,961 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable996 [2021-05-22 02:05:42,961 INFO L430 AbstractCegarLoop]: === Iteration 998 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:42,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:42,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1692871639, now seen corresponding path program 993 times [2021-05-22 02:05:42,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:42,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300380335] [2021-05-22 02:05:42,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:43,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:43,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:43,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300380335] [2021-05-22 02:05:43,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300380335] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:43,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:43,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:43,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997944297] [2021-05-22 02:05:43,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:43,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:43,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:43,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:43,076 INFO L87 Difference]: Start difference. First operand 5157 states and 24483 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:43,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:43,192 INFO L93 Difference]: Finished difference Result 11099 states and 49619 transitions. [2021-05-22 02:05:43,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:43,192 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:43,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:43,221 INFO L225 Difference]: With dead ends: 11099 [2021-05-22 02:05:43,221 INFO L226 Difference]: Without dead ends: 10684 [2021-05-22 02:05:43,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:43,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10684 states. [2021-05-22 02:05:43,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10684 to 5205. [2021-05-22 02:05:43,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5205 states, 5204 states have (on average 4.738470407378939) internal successors, (24659), 5204 states have internal predecessors, (24659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:43,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5205 states to 5205 states and 24659 transitions. [2021-05-22 02:05:43,468 INFO L78 Accepts]: Start accepts. Automaton has 5205 states and 24659 transitions. Word has length 29 [2021-05-22 02:05:43,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:43,469 INFO L482 AbstractCegarLoop]: Abstraction has 5205 states and 24659 transitions. [2021-05-22 02:05:43,469 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:43,469 INFO L276 IsEmpty]: Start isEmpty. Operand 5205 states and 24659 transitions. [2021-05-22 02:05:43,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:43,478 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:43,478 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:43,478 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable997 [2021-05-22 02:05:43,478 INFO L430 AbstractCegarLoop]: === Iteration 999 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:43,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:43,478 INFO L82 PathProgramCache]: Analyzing trace with hash 856070859, now seen corresponding path program 994 times [2021-05-22 02:05:43,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:43,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181055327] [2021-05-22 02:05:43,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:43,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:43,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:43,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181055327] [2021-05-22 02:05:43,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181055327] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:43,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:43,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:43,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889460507] [2021-05-22 02:05:43,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:43,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:43,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:43,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:43,593 INFO L87 Difference]: Start difference. First operand 5205 states and 24659 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:43,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:43,703 INFO L93 Difference]: Finished difference Result 10827 states and 48610 transitions. [2021-05-22 02:05:43,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:43,703 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:43,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:43,730 INFO L225 Difference]: With dead ends: 10827 [2021-05-22 02:05:43,730 INFO L226 Difference]: Without dead ends: 10316 [2021-05-22 02:05:43,730 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:43,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10316 states. [2021-05-22 02:05:43,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10316 to 5157. [2021-05-22 02:05:43,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 4.743793638479441) internal successors, (24459), 5156 states have internal predecessors, (24459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 24459 transitions. [2021-05-22 02:05:43,972 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 24459 transitions. Word has length 29 [2021-05-22 02:05:43,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:43,973 INFO L482 AbstractCegarLoop]: Abstraction has 5157 states and 24459 transitions. [2021-05-22 02:05:43,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:43,973 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 24459 transitions. [2021-05-22 02:05:43,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:43,981 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:43,981 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:43,982 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable998 [2021-05-22 02:05:43,982 INFO L430 AbstractCegarLoop]: === Iteration 1000 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:43,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:43,982 INFO L82 PathProgramCache]: Analyzing trace with hash 250501835, now seen corresponding path program 995 times [2021-05-22 02:05:43,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:43,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858896364] [2021-05-22 02:05:43,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:43,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:44,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:44,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:44,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858896364] [2021-05-22 02:05:44,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858896364] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:44,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:44,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:44,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396282041] [2021-05-22 02:05:44,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:44,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:44,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:44,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:44,111 INFO L87 Difference]: Start difference. First operand 5157 states and 24459 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:44,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:44,213 INFO L93 Difference]: Finished difference Result 11282 states and 50390 transitions. [2021-05-22 02:05:44,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:44,214 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:44,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:44,242 INFO L225 Difference]: With dead ends: 11282 [2021-05-22 02:05:44,242 INFO L226 Difference]: Without dead ends: 10740 [2021-05-22 02:05:44,242 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:44,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10740 states. [2021-05-22 02:05:44,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10740 to 5261. [2021-05-22 02:05:44,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 4.723764258555133) internal successors, (24847), 5260 states have internal predecessors, (24847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:44,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 24847 transitions. [2021-05-22 02:05:44,491 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 24847 transitions. Word has length 29 [2021-05-22 02:05:44,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:44,491 INFO L482 AbstractCegarLoop]: Abstraction has 5261 states and 24847 transitions. [2021-05-22 02:05:44,491 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:44,491 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 24847 transitions. [2021-05-22 02:05:44,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:44,500 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:44,500 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:44,500 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable999 [2021-05-22 02:05:44,501 INFO L430 AbstractCegarLoop]: === Iteration 1001 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:44,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:44,501 INFO L82 PathProgramCache]: Analyzing trace with hash 811934633, now seen corresponding path program 996 times [2021-05-22 02:05:44,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:44,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894098344] [2021-05-22 02:05:44,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:44,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:44,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894098344] [2021-05-22 02:05:44,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894098344] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:44,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:44,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:44,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453952768] [2021-05-22 02:05:44,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:44,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:44,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:44,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:44,630 INFO L87 Difference]: Start difference. First operand 5261 states and 24847 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:44,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:44,753 INFO L93 Difference]: Finished difference Result 10883 states and 48798 transitions. [2021-05-22 02:05:44,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:44,753 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:44,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:44,780 INFO L225 Difference]: With dead ends: 10883 [2021-05-22 02:05:44,781 INFO L226 Difference]: Without dead ends: 10276 [2021-05-22 02:05:44,781 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:44,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10276 states. [2021-05-22 02:05:44,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10276 to 5117. [2021-05-22 02:05:45,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.749609069585614) internal successors, (24299), 5116 states have internal predecessors, (24299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:45,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24299 transitions. [2021-05-22 02:05:45,018 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24299 transitions. Word has length 29 [2021-05-22 02:05:45,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:45,018 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24299 transitions. [2021-05-22 02:05:45,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:45,019 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24299 transitions. [2021-05-22 02:05:45,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:45,027 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:45,027 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:45,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1000 [2021-05-22 02:05:45,027 INFO L430 AbstractCegarLoop]: === Iteration 1002 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:45,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:45,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1085336361, now seen corresponding path program 997 times [2021-05-22 02:05:45,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:45,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706898357] [2021-05-22 02:05:45,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:45,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:45,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706898357] [2021-05-22 02:05:45,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706898357] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:45,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:45,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:45,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665189285] [2021-05-22 02:05:45,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:45,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:45,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:45,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:45,151 INFO L87 Difference]: Start difference. First operand 5117 states and 24299 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:45,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:45,275 INFO L93 Difference]: Finished difference Result 11096 states and 49602 transitions. [2021-05-22 02:05:45,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:45,276 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:45,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:45,303 INFO L225 Difference]: With dead ends: 11096 [2021-05-22 02:05:45,303 INFO L226 Difference]: Without dead ends: 10681 [2021-05-22 02:05:45,304 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:45,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10681 states. [2021-05-22 02:05:45,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10681 to 5189. [2021-05-22 02:05:45,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 4.741518889745567) internal successors, (24599), 5188 states have internal predecessors, (24599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:45,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 24599 transitions. [2021-05-22 02:05:45,545 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 24599 transitions. Word has length 29 [2021-05-22 02:05:45,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:45,545 INFO L482 AbstractCegarLoop]: Abstraction has 5189 states and 24599 transitions. [2021-05-22 02:05:45,545 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:45,545 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 24599 transitions. [2021-05-22 02:05:45,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:45,554 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:45,554 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:45,554 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1001 [2021-05-22 02:05:45,554 INFO L430 AbstractCegarLoop]: === Iteration 1003 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:45,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:45,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1801999307, now seen corresponding path program 998 times [2021-05-22 02:05:45,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:45,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153621588] [2021-05-22 02:05:45,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:45,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:45,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153621588] [2021-05-22 02:05:45,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153621588] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:45,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:45,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:45,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257400329] [2021-05-22 02:05:45,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:45,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:45,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:45,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:45,678 INFO L87 Difference]: Start difference. First operand 5189 states and 24599 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:45,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:45,799 INFO L93 Difference]: Finished difference Result 11158 states and 49823 transitions. [2021-05-22 02:05:45,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:45,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:45,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:45,827 INFO L225 Difference]: With dead ends: 11158 [2021-05-22 02:05:45,828 INFO L226 Difference]: Without dead ends: 10633 [2021-05-22 02:05:45,828 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:45,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10633 states. [2021-05-22 02:05:46,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10633 to 5141. [2021-05-22 02:05:46,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5140 states have (on average 4.746887159533074) internal successors, (24399), 5140 states have internal predecessors, (24399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:46,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 24399 transitions. [2021-05-22 02:05:46,069 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 24399 transitions. Word has length 29 [2021-05-22 02:05:46,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:46,070 INFO L482 AbstractCegarLoop]: Abstraction has 5141 states and 24399 transitions. [2021-05-22 02:05:46,070 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:46,070 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 24399 transitions. [2021-05-22 02:05:46,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:46,078 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:46,078 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:46,078 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1002 [2021-05-22 02:05:46,078 INFO L430 AbstractCegarLoop]: === Iteration 1004 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:46,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:46,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1474738677, now seen corresponding path program 999 times [2021-05-22 02:05:46,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:46,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613809322] [2021-05-22 02:05:46,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:46,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:46,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613809322] [2021-05-22 02:05:46,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613809322] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:46,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:46,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:46,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857033173] [2021-05-22 02:05:46,193 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:46,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:46,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:46,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:46,193 INFO L87 Difference]: Start difference. First operand 5141 states and 24399 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:46,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:46,307 INFO L93 Difference]: Finished difference Result 10986 states and 49133 transitions. [2021-05-22 02:05:46,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:46,307 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:46,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:46,334 INFO L225 Difference]: With dead ends: 10986 [2021-05-22 02:05:46,334 INFO L226 Difference]: Without dead ends: 10571 [2021-05-22 02:05:46,334 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:46,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10571 states. [2021-05-22 02:05:46,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10571 to 5189. [2021-05-22 02:05:46,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 4.736892829606785) internal successors, (24575), 5188 states have internal predecessors, (24575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 24575 transitions. [2021-05-22 02:05:46,574 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 24575 transitions. Word has length 29 [2021-05-22 02:05:46,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:46,574 INFO L482 AbstractCegarLoop]: Abstraction has 5189 states and 24575 transitions. [2021-05-22 02:05:46,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:46,574 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 24575 transitions. [2021-05-22 02:05:46,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:46,583 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:46,583 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:46,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1003 [2021-05-22 02:05:46,583 INFO L430 AbstractCegarLoop]: === Iteration 1005 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:46,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:46,583 INFO L82 PathProgramCache]: Analyzing trace with hash 79884747, now seen corresponding path program 1000 times [2021-05-22 02:05:46,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:46,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583583946] [2021-05-22 02:05:46,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:46,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:46,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583583946] [2021-05-22 02:05:46,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583583946] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:46,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:46,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:46,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192553114] [2021-05-22 02:05:46,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:46,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:46,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:46,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:46,697 INFO L87 Difference]: Start difference. First operand 5189 states and 24575 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:46,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:46,814 INFO L93 Difference]: Finished difference Result 10714 states and 48124 transitions. [2021-05-22 02:05:46,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:46,815 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:46,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:46,842 INFO L225 Difference]: With dead ends: 10714 [2021-05-22 02:05:46,842 INFO L226 Difference]: Without dead ends: 10203 [2021-05-22 02:05:46,842 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:46,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10203 states. [2021-05-22 02:05:47,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10203 to 5141. [2021-05-22 02:05:47,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5140 states have (on average 4.742217898832685) internal successors, (24375), 5140 states have internal predecessors, (24375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:47,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 24375 transitions. [2021-05-22 02:05:47,076 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 24375 transitions. Word has length 29 [2021-05-22 02:05:47,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:47,076 INFO L482 AbstractCegarLoop]: Abstraction has 5141 states and 24375 transitions. [2021-05-22 02:05:47,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:47,077 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 24375 transitions. [2021-05-22 02:05:47,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:47,085 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:47,085 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:47,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1004 [2021-05-22 02:05:47,085 INFO L430 AbstractCegarLoop]: === Iteration 1006 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:47,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:47,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1090586131, now seen corresponding path program 1001 times [2021-05-22 02:05:47,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:47,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235769666] [2021-05-22 02:05:47,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:47,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:47,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:47,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235769666] [2021-05-22 02:05:47,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235769666] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:47,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:47,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:47,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920851211] [2021-05-22 02:05:47,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:47,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:47,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:47,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:47,212 INFO L87 Difference]: Start difference. First operand 5141 states and 24375 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:47,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:47,336 INFO L93 Difference]: Finished difference Result 11072 states and 49502 transitions. [2021-05-22 02:05:47,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:47,336 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:47,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:47,364 INFO L225 Difference]: With dead ends: 11072 [2021-05-22 02:05:47,364 INFO L226 Difference]: Without dead ends: 10595 [2021-05-22 02:05:47,364 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:47,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10595 states. [2021-05-22 02:05:47,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10595 to 5213. [2021-05-22 02:05:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 5212 states have (on average 4.7296623177283195) internal successors, (24651), 5212 states have internal predecessors, (24651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:47,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 24651 transitions. [2021-05-22 02:05:47,607 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 24651 transitions. Word has length 29 [2021-05-22 02:05:47,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:47,608 INFO L482 AbstractCegarLoop]: Abstraction has 5213 states and 24651 transitions. [2021-05-22 02:05:47,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:47,608 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 24651 transitions. [2021-05-22 02:05:47,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:47,616 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:47,616 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:47,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1005 [2021-05-22 02:05:47,616 INFO L430 AbstractCegarLoop]: === Iteration 1007 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:47,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:47,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1180345781, now seen corresponding path program 1002 times [2021-05-22 02:05:47,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:47,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044741185] [2021-05-22 02:05:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:47,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:47,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:47,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044741185] [2021-05-22 02:05:47,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044741185] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:47,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:47,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:47,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580757292] [2021-05-22 02:05:47,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:47,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:47,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:47,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:47,741 INFO L87 Difference]: Start difference. First operand 5213 states and 24651 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:47,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:47,865 INFO L93 Difference]: Finished difference Result 10738 states and 48200 transitions. [2021-05-22 02:05:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:47,866 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:47,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:47,892 INFO L225 Difference]: With dead ends: 10738 [2021-05-22 02:05:47,892 INFO L226 Difference]: Without dead ends: 10179 [2021-05-22 02:05:47,893 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:48,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10179 states. [2021-05-22 02:05:48,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10179 to 5117. [2021-05-22 02:05:48,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.747263487099296) internal successors, (24287), 5116 states have internal predecessors, (24287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:48,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24287 transitions. [2021-05-22 02:05:48,129 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24287 transitions. Word has length 29 [2021-05-22 02:05:48,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:48,129 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24287 transitions. [2021-05-22 02:05:48,129 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:48,129 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24287 transitions. [2021-05-22 02:05:48,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:48,138 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:48,138 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:48,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1006 [2021-05-22 02:05:48,138 INFO L430 AbstractCegarLoop]: === Iteration 1008 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:48,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:48,138 INFO L82 PathProgramCache]: Analyzing trace with hash 400935405, now seen corresponding path program 1003 times [2021-05-22 02:05:48,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:48,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869674753] [2021-05-22 02:05:48,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:48,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:48,255 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:48,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869674753] [2021-05-22 02:05:48,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869674753] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:48,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:48,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:48,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000373432] [2021-05-22 02:05:48,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:48,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:48,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:48,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:48,256 INFO L87 Difference]: Start difference. First operand 5117 states and 24287 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:48,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:48,418 INFO L93 Difference]: Finished difference Result 11672 states and 52057 transitions. [2021-05-22 02:05:48,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:48,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:48,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:48,450 INFO L225 Difference]: With dead ends: 11672 [2021-05-22 02:05:48,450 INFO L226 Difference]: Without dead ends: 11130 [2021-05-22 02:05:48,450 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:48,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11130 states. [2021-05-22 02:05:48,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11130 to 5328. [2021-05-22 02:05:48,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5328 states, 5327 states have (on average 4.719729678993805) internal successors, (25142), 5327 states have internal predecessors, (25142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 25142 transitions. [2021-05-22 02:05:48,698 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 25142 transitions. Word has length 29 [2021-05-22 02:05:48,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:48,698 INFO L482 AbstractCegarLoop]: Abstraction has 5328 states and 25142 transitions. [2021-05-22 02:05:48,698 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:48,698 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 25142 transitions. [2021-05-22 02:05:48,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:48,707 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:48,707 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:48,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1007 [2021-05-22 02:05:48,707 INFO L430 AbstractCegarLoop]: === Iteration 1009 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:48,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:48,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1642401589, now seen corresponding path program 1004 times [2021-05-22 02:05:48,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:48,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879025302] [2021-05-22 02:05:48,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:48,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:48,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879025302] [2021-05-22 02:05:48,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879025302] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:48,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:48,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:48,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927777314] [2021-05-22 02:05:48,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:48,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:48,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:48,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:48,822 INFO L87 Difference]: Start difference. First operand 5328 states and 25142 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:48,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:48,934 INFO L93 Difference]: Finished difference Result 11607 states and 51688 transitions. [2021-05-22 02:05:48,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:48,934 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:48,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:48,963 INFO L225 Difference]: With dead ends: 11607 [2021-05-22 02:05:48,963 INFO L226 Difference]: Without dead ends: 10987 [2021-05-22 02:05:48,964 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:49,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10987 states. [2021-05-22 02:05:49,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10987 to 5185. [2021-05-22 02:05:49,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.736689814814815) internal successors, (24555), 5184 states have internal predecessors, (24555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:49,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24555 transitions. [2021-05-22 02:05:49,212 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24555 transitions. Word has length 29 [2021-05-22 02:05:49,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:49,212 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24555 transitions. [2021-05-22 02:05:49,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:49,212 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24555 transitions. [2021-05-22 02:05:49,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:49,221 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:49,221 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:49,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1008 [2021-05-22 02:05:49,221 INFO L430 AbstractCegarLoop]: === Iteration 1010 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:49,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:49,221 INFO L82 PathProgramCache]: Analyzing trace with hash 41257675, now seen corresponding path program 1005 times [2021-05-22 02:05:49,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:49,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597351758] [2021-05-22 02:05:49,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:49,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:49,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:49,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597351758] [2021-05-22 02:05:49,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597351758] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:49,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:49,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:49,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121900436] [2021-05-22 02:05:49,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:49,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:49,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:49,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:49,349 INFO L87 Difference]: Start difference. First operand 5185 states and 24555 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:49,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:49,444 INFO L93 Difference]: Finished difference Result 11396 states and 50879 transitions. [2021-05-22 02:05:49,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:49,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:49,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:49,473 INFO L225 Difference]: With dead ends: 11396 [2021-05-22 02:05:49,473 INFO L226 Difference]: Without dead ends: 10854 [2021-05-22 02:05:49,473 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:49,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10854 states. [2021-05-22 02:05:49,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10854 to 5289. [2021-05-22 02:05:49,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5289 states, 5288 states have (on average 4.7169062027231465) internal successors, (24943), 5288 states have internal predecessors, (24943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:49,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5289 states to 5289 states and 24943 transitions. [2021-05-22 02:05:49,721 INFO L78 Accepts]: Start accepts. Automaton has 5289 states and 24943 transitions. Word has length 29 [2021-05-22 02:05:49,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:49,722 INFO L482 AbstractCegarLoop]: Abstraction has 5289 states and 24943 transitions. [2021-05-22 02:05:49,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:49,722 INFO L276 IsEmpty]: Start isEmpty. Operand 5289 states and 24943 transitions. [2021-05-22 02:05:49,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:49,731 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:49,731 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:49,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1009 [2021-05-22 02:05:49,731 INFO L430 AbstractCegarLoop]: === Iteration 1011 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:49,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:49,731 INFO L82 PathProgramCache]: Analyzing trace with hash -676310325, now seen corresponding path program 1006 times [2021-05-22 02:05:49,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:49,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392630175] [2021-05-22 02:05:49,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:49,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:49,856 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:49,856 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392630175] [2021-05-22 02:05:49,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392630175] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:49,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:49,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:49,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058941911] [2021-05-22 02:05:49,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:49,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:49,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:49,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:49,857 INFO L87 Difference]: Start difference. First operand 5289 states and 24943 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:49,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:49,962 INFO L93 Difference]: Finished difference Result 10997 states and 49287 transitions. [2021-05-22 02:05:49,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:49,962 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:49,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:49,990 INFO L225 Difference]: With dead ends: 10997 [2021-05-22 02:05:49,990 INFO L226 Difference]: Without dead ends: 10430 [2021-05-22 02:05:49,991 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:50,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10430 states. [2021-05-22 02:05:50,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10430 to 5185. [2021-05-22 02:05:50,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.726658950617284) internal successors, (24503), 5184 states have internal predecessors, (24503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:50,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24503 transitions. [2021-05-22 02:05:50,229 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24503 transitions. Word has length 29 [2021-05-22 02:05:50,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:50,229 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24503 transitions. [2021-05-22 02:05:50,229 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:50,229 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24503 transitions. [2021-05-22 02:05:50,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:50,238 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:50,238 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:50,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1010 [2021-05-22 02:05:50,238 INFO L430 AbstractCegarLoop]: === Iteration 1012 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:50,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:50,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1023605289, now seen corresponding path program 1007 times [2021-05-22 02:05:50,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:50,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281682194] [2021-05-22 02:05:50,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:50,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:50,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:50,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281682194] [2021-05-22 02:05:50,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281682194] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:50,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:50,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:50,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162408476] [2021-05-22 02:05:50,363 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:50,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:50,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:50,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:50,363 INFO L87 Difference]: Start difference. First operand 5185 states and 24503 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:50,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:50,470 INFO L93 Difference]: Finished difference Result 11299 states and 50425 transitions. [2021-05-22 02:05:50,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:50,471 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:50,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:50,498 INFO L225 Difference]: With dead ends: 11299 [2021-05-22 02:05:50,498 INFO L226 Difference]: Without dead ends: 10822 [2021-05-22 02:05:50,499 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:50,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10822 states. [2021-05-22 02:05:50,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10822 to 5257. [2021-05-22 02:05:50,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5256 states have (on average 4.714421613394216) internal successors, (24779), 5256 states have internal predecessors, (24779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:50,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 24779 transitions. [2021-05-22 02:05:50,740 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 24779 transitions. Word has length 29 [2021-05-22 02:05:50,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:50,740 INFO L482 AbstractCegarLoop]: Abstraction has 5257 states and 24779 transitions. [2021-05-22 02:05:50,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:50,740 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 24779 transitions. [2021-05-22 02:05:50,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:50,749 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:50,749 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:50,749 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1011 [2021-05-22 02:05:50,749 INFO L430 AbstractCegarLoop]: === Iteration 1013 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:50,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:50,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1758943861, now seen corresponding path program 1008 times [2021-05-22 02:05:50,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:50,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431656692] [2021-05-22 02:05:50,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:50,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:50,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431656692] [2021-05-22 02:05:50,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431656692] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:50,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:50,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:50,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901527049] [2021-05-22 02:05:50,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:50,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:50,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:50,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:50,871 INFO L87 Difference]: Start difference. First operand 5257 states and 24779 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:50,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:50,978 INFO L93 Difference]: Finished difference Result 10965 states and 49123 transitions. [2021-05-22 02:05:50,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:50,978 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:50,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:51,005 INFO L225 Difference]: With dead ends: 10965 [2021-05-22 02:05:51,005 INFO L226 Difference]: Without dead ends: 10334 [2021-05-22 02:05:51,005 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:51,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10334 states. [2021-05-22 02:05:51,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10334 to 5089. [2021-05-22 02:05:51,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 4.75373427672956) internal successors, (24187), 5088 states have internal predecessors, (24187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:51,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 24187 transitions. [2021-05-22 02:05:51,241 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 24187 transitions. Word has length 29 [2021-05-22 02:05:51,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:51,241 INFO L482 AbstractCegarLoop]: Abstraction has 5089 states and 24187 transitions. [2021-05-22 02:05:51,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:51,241 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 24187 transitions. [2021-05-22 02:05:51,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:51,249 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:51,249 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:51,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1012 [2021-05-22 02:05:51,250 INFO L430 AbstractCegarLoop]: === Iteration 1014 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:51,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:51,250 INFO L82 PathProgramCache]: Analyzing trace with hash -217039861, now seen corresponding path program 1009 times [2021-05-22 02:05:51,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:51,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818237099] [2021-05-22 02:05:51,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:51,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:51,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:51,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818237099] [2021-05-22 02:05:51,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818237099] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:51,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:51,371 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:51,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110641652] [2021-05-22 02:05:51,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:51,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:51,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:51,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:51,371 INFO L87 Difference]: Start difference. First operand 5089 states and 24187 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:51,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:51,481 INFO L93 Difference]: Finished difference Result 11077 states and 49447 transitions. [2021-05-22 02:05:51,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:51,481 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:51,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:51,508 INFO L225 Difference]: With dead ends: 11077 [2021-05-22 02:05:51,508 INFO L226 Difference]: Without dead ends: 10662 [2021-05-22 02:05:51,509 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10662 states. [2021-05-22 02:05:51,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10662 to 5217. [2021-05-22 02:05:51,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 4.745973926380368) internal successors, (24755), 5216 states have internal predecessors, (24755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:51,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 24755 transitions. [2021-05-22 02:05:51,749 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 24755 transitions. Word has length 29 [2021-05-22 02:05:51,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:51,749 INFO L482 AbstractCegarLoop]: Abstraction has 5217 states and 24755 transitions. [2021-05-22 02:05:51,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:51,749 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 24755 transitions. [2021-05-22 02:05:51,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:51,758 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:51,758 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:51,758 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1013 [2021-05-22 02:05:51,758 INFO L430 AbstractCegarLoop]: === Iteration 1015 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:51,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:51,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1537780747, now seen corresponding path program 1010 times [2021-05-22 02:05:51,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:51,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314254712] [2021-05-22 02:05:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:51,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:51,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:51,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314254712] [2021-05-22 02:05:51,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314254712] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:51,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:51,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:51,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016964096] [2021-05-22 02:05:51,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:51,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:51,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:51,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:51,880 INFO L87 Difference]: Start difference. First operand 5217 states and 24755 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:51,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:51,974 INFO L93 Difference]: Finished difference Result 11204 states and 49926 transitions. [2021-05-22 02:05:51,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:51,974 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:51,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:52,002 INFO L225 Difference]: With dead ends: 11204 [2021-05-22 02:05:52,002 INFO L226 Difference]: Without dead ends: 10582 [2021-05-22 02:05:52,002 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:52,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10582 states. [2021-05-22 02:05:52,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10582 to 5137. [2021-05-22 02:05:52,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.75136292834891) internal successors, (24403), 5136 states have internal predecessors, (24403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:52,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24403 transitions. [2021-05-22 02:05:52,244 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24403 transitions. Word has length 29 [2021-05-22 02:05:52,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:52,245 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24403 transitions. [2021-05-22 02:05:52,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:52,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24403 transitions. [2021-05-22 02:05:52,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:52,253 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:52,253 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:52,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1014 [2021-05-22 02:05:52,254 INFO L430 AbstractCegarLoop]: === Iteration 1016 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:52,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:52,254 INFO L82 PathProgramCache]: Analyzing trace with hash -132251863, now seen corresponding path program 1011 times [2021-05-22 02:05:52,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:52,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91784648] [2021-05-22 02:05:52,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:52,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:52,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:52,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91784648] [2021-05-22 02:05:52,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91784648] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:52,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:52,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:52,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989805104] [2021-05-22 02:05:52,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:52,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:52,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:52,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:52,370 INFO L87 Difference]: Start difference. First operand 5137 states and 24403 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:52,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:52,481 INFO L93 Difference]: Finished difference Result 10902 states and 48664 transitions. [2021-05-22 02:05:52,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:52,481 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:52,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:52,508 INFO L225 Difference]: With dead ends: 10902 [2021-05-22 02:05:52,508 INFO L226 Difference]: Without dead ends: 10487 [2021-05-22 02:05:52,508 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:52,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10487 states. [2021-05-22 02:05:52,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10487 to 5169. [2021-05-22 02:05:52,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.743614551083591) internal successors, (24515), 5168 states have internal predecessors, (24515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:52,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24515 transitions. [2021-05-22 02:05:52,743 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24515 transitions. Word has length 29 [2021-05-22 02:05:52,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:52,743 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24515 transitions. [2021-05-22 02:05:52,743 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:52,743 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24515 transitions. [2021-05-22 02:05:52,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:52,752 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:52,752 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:52,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1015 [2021-05-22 02:05:52,752 INFO L430 AbstractCegarLoop]: === Iteration 1017 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:52,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:52,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1760594439, now seen corresponding path program 1012 times [2021-05-22 02:05:52,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:52,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044759219] [2021-05-22 02:05:52,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:52,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:52,868 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044759219] [2021-05-22 02:05:52,868 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044759219] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:52,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:52,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:52,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982662051] [2021-05-22 02:05:52,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:52,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:52,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:52,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:52,868 INFO L87 Difference]: Start difference. First operand 5169 states and 24515 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:52,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:52,969 INFO L93 Difference]: Finished difference Result 10902 states and 48632 transitions. [2021-05-22 02:05:52,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:52,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:52,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:52,997 INFO L225 Difference]: With dead ends: 10902 [2021-05-22 02:05:52,997 INFO L226 Difference]: Without dead ends: 10455 [2021-05-22 02:05:52,997 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10455 states. [2021-05-22 02:05:53,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10455 to 5137. [2021-05-22 02:05:53,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.7482476635514015) internal successors, (24387), 5136 states have internal predecessors, (24387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:53,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24387 transitions. [2021-05-22 02:05:53,240 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24387 transitions. Word has length 29 [2021-05-22 02:05:53,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:53,240 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24387 transitions. [2021-05-22 02:05:53,240 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:53,240 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24387 transitions. [2021-05-22 02:05:53,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:53,249 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:53,249 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:53,249 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1016 [2021-05-22 02:05:53,249 INFO L430 AbstractCegarLoop]: === Iteration 1018 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:53,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:53,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1812769307, now seen corresponding path program 1013 times [2021-05-22 02:05:53,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:53,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382411991] [2021-05-22 02:05:53,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:53,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:53,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:53,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382411991] [2021-05-22 02:05:53,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382411991] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:53,371 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:53,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:53,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333009178] [2021-05-22 02:05:53,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:53,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:53,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:53,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:53,372 INFO L87 Difference]: Start difference. First operand 5137 states and 24387 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:53,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:53,468 INFO L93 Difference]: Finished difference Result 11204 states and 49926 transitions. [2021-05-22 02:05:53,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:53,468 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:53,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:53,497 INFO L225 Difference]: With dead ends: 11204 [2021-05-22 02:05:53,497 INFO L226 Difference]: Without dead ends: 10662 [2021-05-22 02:05:53,497 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:53,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10662 states. [2021-05-22 02:05:53,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10662 to 5217. [2021-05-22 02:05:53,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 4.730636503067485) internal successors, (24675), 5216 states have internal predecessors, (24675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:53,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 24675 transitions. [2021-05-22 02:05:53,744 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 24675 transitions. Word has length 29 [2021-05-22 02:05:53,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:53,744 INFO L482 AbstractCegarLoop]: Abstraction has 5217 states and 24675 transitions. [2021-05-22 02:05:53,744 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:53,744 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 24675 transitions. [2021-05-22 02:05:53,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:53,753 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:53,754 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:53,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1017 [2021-05-22 02:05:53,754 INFO L430 AbstractCegarLoop]: === Iteration 1019 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:53,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:53,754 INFO L82 PathProgramCache]: Analyzing trace with hash -2019577273, now seen corresponding path program 1014 times [2021-05-22 02:05:53,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:53,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492823505] [2021-05-22 02:05:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:53,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:53,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:53,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492823505] [2021-05-22 02:05:53,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492823505] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:53,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:53,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:53,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638049129] [2021-05-22 02:05:53,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:53,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:53,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:53,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:53,875 INFO L87 Difference]: Start difference. First operand 5217 states and 24675 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:53,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:53,976 INFO L93 Difference]: Finished difference Result 11077 states and 49319 transitions. [2021-05-22 02:05:53,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:53,976 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:53,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:54,004 INFO L225 Difference]: With dead ends: 11077 [2021-05-22 02:05:54,005 INFO L226 Difference]: Without dead ends: 10550 [2021-05-22 02:05:54,005 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:54,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10550 states. [2021-05-22 02:05:54,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10550 to 5105. [2021-05-22 02:05:54,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.752938871473354) internal successors, (24259), 5104 states have internal predecessors, (24259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:54,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24259 transitions. [2021-05-22 02:05:54,245 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24259 transitions. Word has length 29 [2021-05-22 02:05:54,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:54,245 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24259 transitions. [2021-05-22 02:05:54,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:54,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24259 transitions. [2021-05-22 02:05:54,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:54,254 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:54,254 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:54,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1018 [2021-05-22 02:05:54,254 INFO L430 AbstractCegarLoop]: === Iteration 1020 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:54,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:54,254 INFO L82 PathProgramCache]: Analyzing trace with hash -705145495, now seen corresponding path program 1015 times [2021-05-22 02:05:54,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:54,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778910998] [2021-05-22 02:05:54,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:54,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:54,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778910998] [2021-05-22 02:05:54,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778910998] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:54,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:54,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:54,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812150839] [2021-05-22 02:05:54,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:54,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:54,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:54,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:54,381 INFO L87 Difference]: Start difference. First operand 5105 states and 24259 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:54,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:54,496 INFO L93 Difference]: Finished difference Result 11093 states and 49535 transitions. [2021-05-22 02:05:54,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:54,496 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:54,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:54,524 INFO L225 Difference]: With dead ends: 11093 [2021-05-22 02:05:54,524 INFO L226 Difference]: Without dead ends: 10678 [2021-05-22 02:05:54,524 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:54,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10678 states. [2021-05-22 02:05:54,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10678 to 5225. [2021-05-22 02:05:54,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 4.74406584992343) internal successors, (24783), 5224 states have internal predecessors, (24783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:54,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 24783 transitions. [2021-05-22 02:05:54,774 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 24783 transitions. Word has length 29 [2021-05-22 02:05:54,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:54,774 INFO L482 AbstractCegarLoop]: Abstraction has 5225 states and 24783 transitions. [2021-05-22 02:05:54,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:54,774 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 24783 transitions. [2021-05-22 02:05:54,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:54,784 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:54,784 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:54,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1019 [2021-05-22 02:05:54,784 INFO L430 AbstractCegarLoop]: === Iteration 1021 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:54,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:54,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1049675113, now seen corresponding path program 1016 times [2021-05-22 02:05:54,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:54,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488144931] [2021-05-22 02:05:54,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:54,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:54,909 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:54,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488144931] [2021-05-22 02:05:54,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488144931] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:54,909 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:54,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:54,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578115274] [2021-05-22 02:05:54,909 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:54,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:54,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:54,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:54,910 INFO L87 Difference]: Start difference. First operand 5225 states and 24783 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:55,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:55,007 INFO L93 Difference]: Finished difference Result 11220 states and 50014 transitions. [2021-05-22 02:05:55,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:55,008 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:55,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:55,036 INFO L225 Difference]: With dead ends: 11220 [2021-05-22 02:05:55,036 INFO L226 Difference]: Without dead ends: 10598 [2021-05-22 02:05:55,036 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:55,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10598 states. [2021-05-22 02:05:55,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10598 to 5145. [2021-05-22 02:05:55,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.747861586314152) internal successors, (24423), 5144 states have internal predecessors, (24423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:55,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24423 transitions. [2021-05-22 02:05:55,279 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24423 transitions. Word has length 29 [2021-05-22 02:05:55,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:55,279 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24423 transitions. [2021-05-22 02:05:55,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:55,280 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24423 transitions. [2021-05-22 02:05:55,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:55,289 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:55,289 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:55,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1020 [2021-05-22 02:05:55,289 INFO L430 AbstractCegarLoop]: === Iteration 1022 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:55,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:55,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1303873367, now seen corresponding path program 1017 times [2021-05-22 02:05:55,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:55,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899021887] [2021-05-22 02:05:55,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:55,408 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:55,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899021887] [2021-05-22 02:05:55,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899021887] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:55,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:55,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:55,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886146168] [2021-05-22 02:05:55,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:55,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:55,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:55,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:55,408 INFO L87 Difference]: Start difference. First operand 5145 states and 24423 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:55,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:55,516 INFO L93 Difference]: Finished difference Result 10886 states and 48648 transitions. [2021-05-22 02:05:55,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:55,517 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:55,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:55,544 INFO L225 Difference]: With dead ends: 10886 [2021-05-22 02:05:55,545 INFO L226 Difference]: Without dead ends: 10471 [2021-05-22 02:05:55,545 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:55,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10471 states. [2021-05-22 02:05:55,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10471 to 5193. [2021-05-22 02:05:55,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5193 states, 5192 states have (on average 4.73786594761171) internal successors, (24599), 5192 states have internal predecessors, (24599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:55,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 24599 transitions. [2021-05-22 02:05:55,783 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 24599 transitions. Word has length 29 [2021-05-22 02:05:55,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:55,783 INFO L482 AbstractCegarLoop]: Abstraction has 5193 states and 24599 transitions. [2021-05-22 02:05:55,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:55,784 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 24599 transitions. [2021-05-22 02:05:55,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:55,792 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:55,792 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:55,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1021 [2021-05-22 02:05:55,792 INFO L430 AbstractCegarLoop]: === Iteration 1023 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:55,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:55,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1245069131, now seen corresponding path program 1018 times [2021-05-22 02:05:55,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:55,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018294361] [2021-05-22 02:05:55,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:55,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:55,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:55,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018294361] [2021-05-22 02:05:55,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018294361] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:55,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:55,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:55,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40846057] [2021-05-22 02:05:55,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:55,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:55,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:55,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:55,913 INFO L87 Difference]: Start difference. First operand 5193 states and 24599 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:56,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:56,027 INFO L93 Difference]: Finished difference Result 10614 states and 47639 transitions. [2021-05-22 02:05:56,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:56,028 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:56,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:56,054 INFO L225 Difference]: With dead ends: 10614 [2021-05-22 02:05:56,055 INFO L226 Difference]: Without dead ends: 10103 [2021-05-22 02:05:56,055 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:56,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10103 states. [2021-05-22 02:05:56,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10103 to 5145. [2021-05-22 02:05:56,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.743195956454121) internal successors, (24399), 5144 states have internal predecessors, (24399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24399 transitions. [2021-05-22 02:05:56,295 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24399 transitions. Word has length 29 [2021-05-22 02:05:56,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:56,295 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24399 transitions. [2021-05-22 02:05:56,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24399 transitions. [2021-05-22 02:05:56,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:56,305 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:56,305 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:56,305 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1022 [2021-05-22 02:05:56,305 INFO L430 AbstractCegarLoop]: === Iteration 1024 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:56,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:56,306 INFO L82 PathProgramCache]: Analyzing trace with hash 639500107, now seen corresponding path program 1019 times [2021-05-22 02:05:56,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:56,306 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424187914] [2021-05-22 02:05:56,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:56,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:56,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424187914] [2021-05-22 02:05:56,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424187914] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:56,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:56,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:56,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768539131] [2021-05-22 02:05:56,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:56,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:56,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:56,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:56,437 INFO L87 Difference]: Start difference. First operand 5145 states and 24399 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:56,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:56,542 INFO L93 Difference]: Finished difference Result 11069 states and 49419 transitions. [2021-05-22 02:05:56,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:56,542 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:56,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:56,570 INFO L225 Difference]: With dead ends: 11069 [2021-05-22 02:05:56,570 INFO L226 Difference]: Without dead ends: 10527 [2021-05-22 02:05:56,570 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:56,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10527 states. [2021-05-22 02:05:56,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10527 to 5249. [2021-05-22 02:05:56,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5249 states, 5248 states have (on average 4.723132621951219) internal successors, (24787), 5248 states have internal predecessors, (24787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:56,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 24787 transitions. [2021-05-22 02:05:56,814 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 24787 transitions. Word has length 29 [2021-05-22 02:05:56,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:56,815 INFO L482 AbstractCegarLoop]: Abstraction has 5249 states and 24787 transitions. [2021-05-22 02:05:56,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:56,815 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 24787 transitions. [2021-05-22 02:05:56,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:56,824 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:56,824 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:56,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1023 [2021-05-22 02:05:56,824 INFO L430 AbstractCegarLoop]: === Iteration 1025 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:56,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:56,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1200932905, now seen corresponding path program 1020 times [2021-05-22 02:05:56,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:56,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350054342] [2021-05-22 02:05:56,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:56,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:56,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350054342] [2021-05-22 02:05:56,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350054342] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:56,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:56,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:56,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563165639] [2021-05-22 02:05:56,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:56,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:56,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:56,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:56,954 INFO L87 Difference]: Start difference. First operand 5249 states and 24787 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:57,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:57,060 INFO L93 Difference]: Finished difference Result 10670 states and 47827 transitions. [2021-05-22 02:05:57,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:57,060 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:57,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:57,087 INFO L225 Difference]: With dead ends: 10670 [2021-05-22 02:05:57,087 INFO L226 Difference]: Without dead ends: 10063 [2021-05-22 02:05:57,087 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:57,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10063 states. [2021-05-22 02:05:57,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10063 to 5105. [2021-05-22 02:05:57,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.74980407523511) internal successors, (24243), 5104 states have internal predecessors, (24243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:57,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24243 transitions. [2021-05-22 02:05:57,327 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24243 transitions. Word has length 29 [2021-05-22 02:05:57,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:57,327 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24243 transitions. [2021-05-22 02:05:57,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:57,327 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24243 transitions. [2021-05-22 02:05:57,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:57,335 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:57,335 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:57,335 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1024 [2021-05-22 02:05:57,335 INFO L430 AbstractCegarLoop]: === Iteration 1026 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:57,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:57,336 INFO L82 PathProgramCache]: Analyzing trace with hash 165067847, now seen corresponding path program 1021 times [2021-05-22 02:05:57,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:57,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256850033] [2021-05-22 02:05:57,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:57,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:57,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:57,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256850033] [2021-05-22 02:05:57,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256850033] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:57,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:57,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:57,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765758340] [2021-05-22 02:05:57,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:57,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:57,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:57,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:57,445 INFO L87 Difference]: Start difference. First operand 5105 states and 24243 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:57,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:57,567 INFO L93 Difference]: Finished difference Result 10711 states and 47849 transitions. [2021-05-22 02:05:57,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:57,567 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:57,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:57,593 INFO L225 Difference]: With dead ends: 10711 [2021-05-22 02:05:57,594 INFO L226 Difference]: Without dead ends: 10296 [2021-05-22 02:05:57,594 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:57,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10296 states. [2021-05-22 02:05:57,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10296 to 5153. [2021-05-22 02:05:57,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.742818322981367) internal successors, (24435), 5152 states have internal predecessors, (24435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:57,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24435 transitions. [2021-05-22 02:05:57,835 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24435 transitions. Word has length 29 [2021-05-22 02:05:57,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:57,835 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24435 transitions. [2021-05-22 02:05:57,835 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:57,835 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24435 transitions. [2021-05-22 02:05:57,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:57,843 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:57,844 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:57,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1025 [2021-05-22 02:05:57,844 INFO L430 AbstractCegarLoop]: === Iteration 1027 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:57,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:57,844 INFO L82 PathProgramCache]: Analyzing trace with hash 2057914149, now seen corresponding path program 1022 times [2021-05-22 02:05:57,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:57,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651615277] [2021-05-22 02:05:57,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:57,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:57,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:57,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651615277] [2021-05-22 02:05:57,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651615277] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:57,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:57,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:57,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207603799] [2021-05-22 02:05:57,955 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:57,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:57,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:57,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:57,955 INFO L87 Difference]: Start difference. First operand 5153 states and 24435 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:58,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:58,049 INFO L93 Difference]: Finished difference Result 10711 states and 47817 transitions. [2021-05-22 02:05:58,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:58,049 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:58,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:58,076 INFO L225 Difference]: With dead ends: 10711 [2021-05-22 02:05:58,077 INFO L226 Difference]: Without dead ends: 10264 [2021-05-22 02:05:58,077 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:58,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10264 states. [2021-05-22 02:05:58,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10264 to 5121. [2021-05-22 02:05:58,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5121 states, 5120 states have (on average 4.7474609375) internal successors, (24307), 5120 states have internal predecessors, (24307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:58,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5121 states to 5121 states and 24307 transitions. [2021-05-22 02:05:58,318 INFO L78 Accepts]: Start accepts. Automaton has 5121 states and 24307 transitions. Word has length 29 [2021-05-22 02:05:58,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:58,318 INFO L482 AbstractCegarLoop]: Abstraction has 5121 states and 24307 transitions. [2021-05-22 02:05:58,319 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:58,319 INFO L276 IsEmpty]: Start isEmpty. Operand 5121 states and 24307 transitions. [2021-05-22 02:05:58,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:58,327 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:58,327 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:58,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1026 [2021-05-22 02:05:58,328 INFO L430 AbstractCegarLoop]: === Iteration 1028 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:58,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:58,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1701949527, now seen corresponding path program 1023 times [2021-05-22 02:05:58,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:58,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774336144] [2021-05-22 02:05:58,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:58,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:58,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774336144] [2021-05-22 02:05:58,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774336144] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:58,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:58,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:58,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216556631] [2021-05-22 02:05:58,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:58,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:58,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:58,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:58,440 INFO L87 Difference]: Start difference. First operand 5121 states and 24307 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:58,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:58,554 INFO L93 Difference]: Finished difference Result 10679 states and 47737 transitions. [2021-05-22 02:05:58,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:58,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:58,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:58,582 INFO L225 Difference]: With dead ends: 10679 [2021-05-22 02:05:58,582 INFO L226 Difference]: Without dead ends: 10264 [2021-05-22 02:05:58,582 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:58,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10264 states. [2021-05-22 02:05:58,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10264 to 5169. [2021-05-22 02:05:58,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.737422600619195) internal successors, (24483), 5168 states have internal predecessors, (24483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:58,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24483 transitions. [2021-05-22 02:05:58,884 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24483 transitions. Word has length 29 [2021-05-22 02:05:58,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:58,884 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24483 transitions. [2021-05-22 02:05:58,884 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:58,884 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24483 transitions. [2021-05-22 02:05:58,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:58,893 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:58,893 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:58,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1027 [2021-05-22 02:05:58,893 INFO L430 AbstractCegarLoop]: === Iteration 1029 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:58,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:58,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1121956585, now seen corresponding path program 1024 times [2021-05-22 02:05:58,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:58,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827266353] [2021-05-22 02:05:58,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:58,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:58,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827266353] [2021-05-22 02:05:58,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827266353] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:58,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:58,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:58,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676692668] [2021-05-22 02:05:58,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:58,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:58,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:58,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:58,999 INFO L87 Difference]: Start difference. First operand 5169 states and 24483 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:59,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:59,111 INFO L93 Difference]: Finished difference Result 10407 states and 46728 transitions. [2021-05-22 02:05:59,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:59,111 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:59,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:59,137 INFO L225 Difference]: With dead ends: 10407 [2021-05-22 02:05:59,138 INFO L226 Difference]: Without dead ends: 9896 [2021-05-22 02:05:59,138 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:59,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9896 states. [2021-05-22 02:05:59,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9896 to 5121. [2021-05-22 02:05:59,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5121 states, 5120 states have (on average 4.7443359375) internal successors, (24291), 5120 states have internal predecessors, (24291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:59,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5121 states to 5121 states and 24291 transitions. [2021-05-22 02:05:59,372 INFO L78 Accepts]: Start accepts. Automaton has 5121 states and 24291 transitions. Word has length 29 [2021-05-22 02:05:59,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:59,372 INFO L482 AbstractCegarLoop]: Abstraction has 5121 states and 24291 transitions. [2021-05-22 02:05:59,372 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:59,372 INFO L276 IsEmpty]: Start isEmpty. Operand 5121 states and 24291 transitions. [2021-05-22 02:05:59,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:59,381 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:59,381 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:59,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1028 [2021-05-22 02:05:59,381 INFO L430 AbstractCegarLoop]: === Iteration 1030 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:59,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:59,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1997462619, now seen corresponding path program 1025 times [2021-05-22 02:05:59,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:59,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627443662] [2021-05-22 02:05:59,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:59,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:59,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627443662] [2021-05-22 02:05:59,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627443662] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:59,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:59,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:59,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915015330] [2021-05-22 02:05:59,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:59,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:59,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:59,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:59,490 INFO L87 Difference]: Start difference. First operand 5121 states and 24291 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:59,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:05:59,587 INFO L93 Difference]: Finished difference Result 10679 states and 47721 transitions. [2021-05-22 02:05:59,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:05:59,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:05:59,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:05:59,615 INFO L225 Difference]: With dead ends: 10679 [2021-05-22 02:05:59,615 INFO L226 Difference]: Without dead ends: 10264 [2021-05-22 02:05:59,615 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:05:59,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10264 states. [2021-05-22 02:05:59,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10264 to 5169. [2021-05-22 02:05:59,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.734326625386997) internal successors, (24467), 5168 states have internal predecessors, (24467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:59,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24467 transitions. [2021-05-22 02:05:59,854 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24467 transitions. Word has length 29 [2021-05-22 02:05:59,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:05:59,854 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24467 transitions. [2021-05-22 02:05:59,854 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:05:59,854 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24467 transitions. [2021-05-22 02:05:59,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:05:59,863 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:05:59,863 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:05:59,863 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1029 [2021-05-22 02:05:59,864 INFO L430 AbstractCegarLoop]: === Iteration 1031 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:05:59,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:05:59,864 INFO L82 PathProgramCache]: Analyzing trace with hash 802826119, now seen corresponding path program 1026 times [2021-05-22 02:05:59,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:05:59,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765636209] [2021-05-22 02:05:59,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:05:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:05:59,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:05:59,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:05:59,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765636209] [2021-05-22 02:05:59,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765636209] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:05:59,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:05:59,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:05:59,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943185764] [2021-05-22 02:05:59,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:05:59,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:05:59,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:05:59,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:05:59,972 INFO L87 Difference]: Start difference. First operand 5169 states and 24467 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:00,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:00,083 INFO L93 Difference]: Finished difference Result 10407 states and 46712 transitions. [2021-05-22 02:06:00,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:00,083 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:00,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:00,110 INFO L225 Difference]: With dead ends: 10407 [2021-05-22 02:06:00,111 INFO L226 Difference]: Without dead ends: 9880 [2021-05-22 02:06:00,111 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:00,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9880 states. [2021-05-22 02:06:00,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9880 to 5105. [2021-05-22 02:06:00,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.748236677115988) internal successors, (24235), 5104 states have internal predecessors, (24235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:00,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24235 transitions. [2021-05-22 02:06:00,349 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24235 transitions. Word has length 29 [2021-05-22 02:06:00,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:00,349 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24235 transitions. [2021-05-22 02:06:00,349 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:00,349 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24235 transitions. [2021-05-22 02:06:00,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:00,358 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:00,358 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:00,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1030 [2021-05-22 02:06:00,358 INFO L430 AbstractCegarLoop]: === Iteration 1032 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:00,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:00,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1455742973, now seen corresponding path program 1027 times [2021-05-22 02:06:00,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:00,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022707008] [2021-05-22 02:06:00,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:00,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:00,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022707008] [2021-05-22 02:06:00,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022707008] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:00,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:00,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:00,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101875703] [2021-05-22 02:06:00,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:00,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:00,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:00,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:00,484 INFO L87 Difference]: Start difference. First operand 5105 states and 24235 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:00,593 INFO L93 Difference]: Finished difference Result 11220 states and 50038 transitions. [2021-05-22 02:06:00,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:00,593 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:00,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:00,620 INFO L225 Difference]: With dead ends: 11220 [2021-05-22 02:06:00,620 INFO L226 Difference]: Without dead ends: 10678 [2021-05-22 02:06:00,620 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:00,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10678 states. [2021-05-22 02:06:00,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10678 to 5225. [2021-05-22 02:06:00,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 4.733346094946401) internal successors, (24727), 5224 states have internal predecessors, (24727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:00,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 24727 transitions. [2021-05-22 02:06:00,864 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 24727 transitions. Word has length 29 [2021-05-22 02:06:00,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:00,864 INFO L482 AbstractCegarLoop]: Abstraction has 5225 states and 24727 transitions. [2021-05-22 02:06:00,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:00,864 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 24727 transitions. [2021-05-22 02:06:00,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:00,872 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:00,872 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:00,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1031 [2021-05-22 02:06:00,873 INFO L430 AbstractCegarLoop]: === Iteration 1033 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:00,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:00,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1662550939, now seen corresponding path program 1028 times [2021-05-22 02:06:00,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:00,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731218172] [2021-05-22 02:06:00,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:00,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:00,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731218172] [2021-05-22 02:06:00,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731218172] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:00,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:00,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:00,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113453175] [2021-05-22 02:06:00,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:00,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:00,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:00,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:00,997 INFO L87 Difference]: Start difference. First operand 5225 states and 24727 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:01,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:01,106 INFO L93 Difference]: Finished difference Result 11093 states and 49431 transitions. [2021-05-22 02:06:01,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:01,106 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:01,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:01,133 INFO L225 Difference]: With dead ends: 11093 [2021-05-22 02:06:01,134 INFO L226 Difference]: Without dead ends: 10598 [2021-05-22 02:06:01,134 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:01,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10598 states. [2021-05-22 02:06:01,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10598 to 5145. [2021-05-22 02:06:01,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.743195956454121) internal successors, (24399), 5144 states have internal predecessors, (24399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:01,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24399 transitions. [2021-05-22 02:06:01,370 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24399 transitions. Word has length 29 [2021-05-22 02:06:01,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:01,370 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24399 transitions. [2021-05-22 02:06:01,370 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:01,370 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24399 transitions. [2021-05-22 02:06:01,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:01,378 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:01,378 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:01,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1032 [2021-05-22 02:06:01,378 INFO L430 AbstractCegarLoop]: === Iteration 1034 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:01,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:01,379 INFO L82 PathProgramCache]: Analyzing trace with hash 972206949, now seen corresponding path program 1029 times [2021-05-22 02:06:01,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:01,379 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747706623] [2021-05-22 02:06:01,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:01,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:01,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:01,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747706623] [2021-05-22 02:06:01,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747706623] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:01,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:01,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:01,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601130759] [2021-05-22 02:06:01,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:01,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:01,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:01,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:01,509 INFO L87 Difference]: Start difference. First operand 5145 states and 24399 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:01,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:01,600 INFO L93 Difference]: Finished difference Result 11069 states and 49419 transitions. [2021-05-22 02:06:01,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:01,600 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:01,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:01,627 INFO L225 Difference]: With dead ends: 11069 [2021-05-22 02:06:01,627 INFO L226 Difference]: Without dead ends: 10527 [2021-05-22 02:06:01,627 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:01,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10527 states. [2021-05-22 02:06:01,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10527 to 5249. [2021-05-22 02:06:01,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5249 states, 5248 states have (on average 4.723132621951219) internal successors, (24787), 5248 states have internal predecessors, (24787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:01,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 24787 transitions. [2021-05-22 02:06:01,868 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 24787 transitions. Word has length 29 [2021-05-22 02:06:01,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:01,868 INFO L482 AbstractCegarLoop]: Abstraction has 5249 states and 24787 transitions. [2021-05-22 02:06:01,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:01,868 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 24787 transitions. [2021-05-22 02:06:01,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:01,877 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:01,877 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:01,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1033 [2021-05-22 02:06:01,877 INFO L430 AbstractCegarLoop]: === Iteration 1035 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:01,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:01,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1471718117, now seen corresponding path program 1030 times [2021-05-22 02:06:01,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:01,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599886850] [2021-05-22 02:06:01,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:02,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:02,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:02,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599886850] [2021-05-22 02:06:02,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599886850] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:02,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:02,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:02,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133164391] [2021-05-22 02:06:02,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:02,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:02,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:02,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:02,006 INFO L87 Difference]: Start difference. First operand 5249 states and 24787 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:02,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:02,112 INFO L93 Difference]: Finished difference Result 10670 states and 47827 transitions. [2021-05-22 02:06:02,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:02,112 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:02,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:02,140 INFO L225 Difference]: With dead ends: 10670 [2021-05-22 02:06:02,140 INFO L226 Difference]: Without dead ends: 10103 [2021-05-22 02:06:02,140 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:02,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10103 states. [2021-05-22 02:06:02,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10103 to 5145. [2021-05-22 02:06:02,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.735419906687403) internal successors, (24359), 5144 states have internal predecessors, (24359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:02,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24359 transitions. [2021-05-22 02:06:02,381 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24359 transitions. Word has length 29 [2021-05-22 02:06:02,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:02,381 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24359 transitions. [2021-05-22 02:06:02,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:02,381 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24359 transitions. [2021-05-22 02:06:02,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:02,389 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:02,389 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:02,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1034 [2021-05-22 02:06:02,390 INFO L430 AbstractCegarLoop]: === Iteration 1036 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:02,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:02,390 INFO L82 PathProgramCache]: Analyzing trace with hash -620716345, now seen corresponding path program 1031 times [2021-05-22 02:06:02,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:02,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831760307] [2021-05-22 02:06:02,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:02,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:02,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831760307] [2021-05-22 02:06:02,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831760307] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:02,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:02,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:02,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049899177] [2021-05-22 02:06:02,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:02,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:02,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:02,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:02,507 INFO L87 Difference]: Start difference. First operand 5145 states and 24359 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:02,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:02,600 INFO L93 Difference]: Finished difference Result 10886 states and 48584 transitions. [2021-05-22 02:06:02,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:02,600 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:02,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:02,627 INFO L225 Difference]: With dead ends: 10886 [2021-05-22 02:06:02,627 INFO L226 Difference]: Without dead ends: 10471 [2021-05-22 02:06:02,627 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:02,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10471 states. [2021-05-22 02:06:02,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10471 to 5193. [2021-05-22 02:06:02,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5193 states, 5192 states have (on average 4.725539291217257) internal successors, (24535), 5192 states have internal predecessors, (24535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 24535 transitions. [2021-05-22 02:06:02,870 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 24535 transitions. Word has length 29 [2021-05-22 02:06:02,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:02,870 INFO L482 AbstractCegarLoop]: Abstraction has 5193 states and 24535 transitions. [2021-05-22 02:06:02,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:02,870 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 24535 transitions. [2021-05-22 02:06:02,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:02,879 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:02,879 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:02,879 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1035 [2021-05-22 02:06:02,879 INFO L430 AbstractCegarLoop]: === Iteration 1037 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:02,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:02,879 INFO L82 PathProgramCache]: Analyzing trace with hash 288888613, now seen corresponding path program 1032 times [2021-05-22 02:06:02,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:02,879 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267563750] [2021-05-22 02:06:02,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:02,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:02,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:02,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267563750] [2021-05-22 02:06:02,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267563750] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:02,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:02,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:02,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30645292] [2021-05-22 02:06:02,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:02,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:02,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:02,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:02,998 INFO L87 Difference]: Start difference. First operand 5193 states and 24535 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:03,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:03,115 INFO L93 Difference]: Finished difference Result 10614 states and 47575 transitions. [2021-05-22 02:06:03,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:03,115 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:03,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:03,142 INFO L225 Difference]: With dead ends: 10614 [2021-05-22 02:06:03,142 INFO L226 Difference]: Without dead ends: 10047 [2021-05-22 02:06:03,142 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:03,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10047 states. [2021-05-22 02:06:03,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10047 to 5089. [2021-05-22 02:06:03,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 4.752161949685535) internal successors, (24179), 5088 states have internal predecessors, (24179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:03,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 24179 transitions. [2021-05-22 02:06:03,381 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 24179 transitions. Word has length 29 [2021-05-22 02:06:03,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:03,381 INFO L482 AbstractCegarLoop]: Abstraction has 5089 states and 24179 transitions. [2021-05-22 02:06:03,381 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:03,381 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 24179 transitions. [2021-05-22 02:06:03,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:03,390 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:03,390 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:03,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1036 [2021-05-22 02:06:03,390 INFO L430 AbstractCegarLoop]: === Iteration 1038 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:03,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:03,391 INFO L82 PathProgramCache]: Analyzing trace with hash 515638087, now seen corresponding path program 1033 times [2021-05-22 02:06:03,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:03,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697739069] [2021-05-22 02:06:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:03,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:03,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:03,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697739069] [2021-05-22 02:06:03,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697739069] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:03,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:03,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:03,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655824666] [2021-05-22 02:06:03,518 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:03,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:03,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:03,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:03,518 INFO L87 Difference]: Start difference. First operand 5089 states and 24179 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:03,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:03,634 INFO L93 Difference]: Finished difference Result 10634 states and 47517 transitions. [2021-05-22 02:06:03,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:03,634 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:03,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:03,661 INFO L225 Difference]: With dead ends: 10634 [2021-05-22 02:06:03,661 INFO L226 Difference]: Without dead ends: 10219 [2021-05-22 02:06:03,661 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:03,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10219 states. [2021-05-22 02:06:03,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10219 to 5161. [2021-05-22 02:06:03,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.743992248062016) internal successors, (24479), 5160 states have internal predecessors, (24479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:03,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24479 transitions. [2021-05-22 02:06:03,903 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24479 transitions. Word has length 29 [2021-05-22 02:06:03,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:03,903 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24479 transitions. [2021-05-22 02:06:03,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:03,903 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24479 transitions. [2021-05-22 02:06:03,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:03,912 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:03,912 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:03,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1037 [2021-05-22 02:06:03,912 INFO L430 AbstractCegarLoop]: === Iteration 1039 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:03,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:03,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1232301033, now seen corresponding path program 1034 times [2021-05-22 02:06:03,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:03,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149341334] [2021-05-22 02:06:03,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:04,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:04,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:04,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149341334] [2021-05-22 02:06:04,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149341334] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:04,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:04,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:04,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172558897] [2021-05-22 02:06:04,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:04,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:04,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:04,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:04,033 INFO L87 Difference]: Start difference. First operand 5161 states and 24479 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:04,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:04,143 INFO L93 Difference]: Finished difference Result 10696 states and 47738 transitions. [2021-05-22 02:06:04,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:04,144 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:04,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:04,171 INFO L225 Difference]: With dead ends: 10696 [2021-05-22 02:06:04,171 INFO L226 Difference]: Without dead ends: 10171 [2021-05-22 02:06:04,171 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:04,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10171 states. [2021-05-22 02:06:04,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10171 to 5113. [2021-05-22 02:06:04,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.750978090766823) internal successors, (24287), 5112 states have internal predecessors, (24287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:04,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24287 transitions. [2021-05-22 02:06:04,416 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24287 transitions. Word has length 29 [2021-05-22 02:06:04,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:04,416 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24287 transitions. [2021-05-22 02:06:04,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:04,416 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24287 transitions. [2021-05-22 02:06:04,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:04,424 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:04,425 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:04,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1038 [2021-05-22 02:06:04,425 INFO L430 AbstractCegarLoop]: === Iteration 1040 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:04,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:04,425 INFO L82 PathProgramCache]: Analyzing trace with hash 34736041, now seen corresponding path program 1035 times [2021-05-22 02:06:04,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:04,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117062512] [2021-05-22 02:06:04,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:04,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:04,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117062512] [2021-05-22 02:06:04,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117062512] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:04,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:04,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:04,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108818819] [2021-05-22 02:06:04,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:04,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:04,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:04,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:04,540 INFO L87 Difference]: Start difference. First operand 5113 states and 24287 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:04,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:04,650 INFO L93 Difference]: Finished difference Result 10556 states and 47152 transitions. [2021-05-22 02:06:04,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:04,651 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:04,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:04,678 INFO L225 Difference]: With dead ends: 10556 [2021-05-22 02:06:04,678 INFO L226 Difference]: Without dead ends: 10141 [2021-05-22 02:06:04,678 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:04,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10141 states. [2021-05-22 02:06:04,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10141 to 5145. [2021-05-22 02:06:04,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.743195956454121) internal successors, (24399), 5144 states have internal predecessors, (24399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:04,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24399 transitions. [2021-05-22 02:06:04,923 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24399 transitions. Word has length 29 [2021-05-22 02:06:04,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:04,923 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24399 transitions. [2021-05-22 02:06:04,923 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:04,923 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24399 transitions. [2021-05-22 02:06:04,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:04,932 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:04,932 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:04,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1039 [2021-05-22 02:06:04,932 INFO L430 AbstractCegarLoop]: === Iteration 1041 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:04,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:04,932 INFO L82 PathProgramCache]: Analyzing trace with hash 446144037, now seen corresponding path program 1036 times [2021-05-22 02:06:04,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:04,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324609537] [2021-05-22 02:06:04,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:05,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:05,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:05,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324609537] [2021-05-22 02:06:05,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324609537] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:05,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:05,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:05,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653876] [2021-05-22 02:06:05,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:05,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:05,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:05,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:05,049 INFO L87 Difference]: Start difference. First operand 5145 states and 24399 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:05,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:05,146 INFO L93 Difference]: Finished difference Result 10556 states and 47120 transitions. [2021-05-22 02:06:05,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:05,147 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:05,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:05,175 INFO L225 Difference]: With dead ends: 10556 [2021-05-22 02:06:05,175 INFO L226 Difference]: Without dead ends: 10109 [2021-05-22 02:06:05,175 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:05,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10109 states. [2021-05-22 02:06:05,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10109 to 5113. [2021-05-22 02:06:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.747848200312989) internal successors, (24271), 5112 states have internal predecessors, (24271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24271 transitions. [2021-05-22 02:06:05,411 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24271 transitions. Word has length 29 [2021-05-22 02:06:05,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:05,411 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24271 transitions. [2021-05-22 02:06:05,411 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:05,411 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24271 transitions. [2021-05-22 02:06:05,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:05,420 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:05,420 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:05,420 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1040 [2021-05-22 02:06:05,420 INFO L430 AbstractCegarLoop]: === Iteration 1042 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:05,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:05,421 INFO L82 PathProgramCache]: Analyzing trace with hash 581839525, now seen corresponding path program 1037 times [2021-05-22 02:06:05,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:05,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566134442] [2021-05-22 02:06:05,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:05,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:05,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566134442] [2021-05-22 02:06:05,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566134442] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:05,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:05,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:05,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991673457] [2021-05-22 02:06:05,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:05,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:05,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:05,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:05,544 INFO L87 Difference]: Start difference. First operand 5113 states and 24271 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:05,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:05,660 INFO L93 Difference]: Finished difference Result 10696 states and 47754 transitions. [2021-05-22 02:06:05,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:05,660 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:05,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:05,688 INFO L225 Difference]: With dead ends: 10696 [2021-05-22 02:06:05,688 INFO L226 Difference]: Without dead ends: 10219 [2021-05-22 02:06:05,688 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:05,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10219 states. [2021-05-22 02:06:05,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10219 to 5161. [2021-05-22 02:06:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.737790697674418) internal successors, (24447), 5160 states have internal predecessors, (24447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:05,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24447 transitions. [2021-05-22 02:06:05,935 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24447 transitions. Word has length 29 [2021-05-22 02:06:05,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:05,935 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24447 transitions. [2021-05-22 02:06:05,935 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:05,935 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24447 transitions. [2021-05-22 02:06:05,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:05,944 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:05,944 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:05,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1041 [2021-05-22 02:06:05,944 INFO L430 AbstractCegarLoop]: === Iteration 1043 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:05,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:05,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1662902151, now seen corresponding path program 1038 times [2021-05-22 02:06:05,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:05,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078982473] [2021-05-22 02:06:05,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:06,068 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:06,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078982473] [2021-05-22 02:06:06,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078982473] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:06,068 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:06,068 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:06,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338807798] [2021-05-22 02:06:06,068 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:06,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:06,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:06,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:06,069 INFO L87 Difference]: Start difference. First operand 5161 states and 24447 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:06,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:06,164 INFO L93 Difference]: Finished difference Result 10634 states and 47437 transitions. [2021-05-22 02:06:06,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:06,165 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:06,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:06,192 INFO L225 Difference]: With dead ends: 10634 [2021-05-22 02:06:06,192 INFO L226 Difference]: Without dead ends: 10155 [2021-05-22 02:06:06,192 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:06,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10155 states. [2021-05-22 02:06:06,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10155 to 5097. [2021-05-22 02:06:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5097 states, 5096 states have (on average 4.751766091051805) internal successors, (24215), 5096 states have internal predecessors, (24215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:06,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5097 states to 5097 states and 24215 transitions. [2021-05-22 02:06:06,434 INFO L78 Accepts]: Start accepts. Automaton has 5097 states and 24215 transitions. Word has length 29 [2021-05-22 02:06:06,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:06,434 INFO L482 AbstractCegarLoop]: Abstraction has 5097 states and 24215 transitions. [2021-05-22 02:06:06,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:06,434 INFO L276 IsEmpty]: Start isEmpty. Operand 5097 states and 24215 transitions. [2021-05-22 02:06:06,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:06,443 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:06,443 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:06,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1042 [2021-05-22 02:06:06,444 INFO L430 AbstractCegarLoop]: === Iteration 1044 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:06,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:06,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1608271401, now seen corresponding path program 1039 times [2021-05-22 02:06:06,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:06,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642908622] [2021-05-22 02:06:06,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:06,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:06,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:06,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642908622] [2021-05-22 02:06:06,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642908622] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:06,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:06,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:06,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767124967] [2021-05-22 02:06:06,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:06,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:06,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:06,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:06,567 INFO L87 Difference]: Start difference. First operand 5097 states and 24215 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:06,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:06,682 INFO L93 Difference]: Finished difference Result 10682 states and 47757 transitions. [2021-05-22 02:06:06,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:06,682 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:06,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:06,710 INFO L225 Difference]: With dead ends: 10682 [2021-05-22 02:06:06,711 INFO L226 Difference]: Without dead ends: 10267 [2021-05-22 02:06:06,711 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:06,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10267 states. [2021-05-22 02:06:06,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10267 to 5169. [2021-05-22 02:06:06,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.743614551083591) internal successors, (24515), 5168 states have internal predecessors, (24515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:06,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24515 transitions. [2021-05-22 02:06:06,955 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24515 transitions. Word has length 29 [2021-05-22 02:06:06,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:06,955 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24515 transitions. [2021-05-22 02:06:06,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:06,955 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24515 transitions. [2021-05-22 02:06:06,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:06,965 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:06,965 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:06,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1043 [2021-05-22 02:06:06,965 INFO L430 AbstractCegarLoop]: === Iteration 1045 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:06,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:06,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1970032949, now seen corresponding path program 1040 times [2021-05-22 02:06:06,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:06,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288653120] [2021-05-22 02:06:06,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:06,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:07,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:07,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:07,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288653120] [2021-05-22 02:06:07,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288653120] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:07,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:07,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:07,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840037428] [2021-05-22 02:06:07,089 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:07,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:07,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:07,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:07,089 INFO L87 Difference]: Start difference. First operand 5169 states and 24515 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:07,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:07,206 INFO L93 Difference]: Finished difference Result 10744 states and 47978 transitions. [2021-05-22 02:06:07,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:07,207 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:07,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:07,233 INFO L225 Difference]: With dead ends: 10744 [2021-05-22 02:06:07,234 INFO L226 Difference]: Without dead ends: 10219 [2021-05-22 02:06:07,234 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:07,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10219 states. [2021-05-22 02:06:07,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10219 to 5121. [2021-05-22 02:06:07,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5121 states, 5120 states have (on average 4.7490234375) internal successors, (24315), 5120 states have internal predecessors, (24315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:07,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5121 states to 5121 states and 24315 transitions. [2021-05-22 02:06:07,475 INFO L78 Accepts]: Start accepts. Automaton has 5121 states and 24315 transitions. Word has length 29 [2021-05-22 02:06:07,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:07,475 INFO L482 AbstractCegarLoop]: Abstraction has 5121 states and 24315 transitions. [2021-05-22 02:06:07,475 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:07,475 INFO L276 IsEmpty]: Start isEmpty. Operand 5121 states and 24315 transitions. [2021-05-22 02:06:07,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:07,484 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:07,484 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:07,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1044 [2021-05-22 02:06:07,484 INFO L430 AbstractCegarLoop]: === Iteration 1046 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:07,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:07,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1295224361, now seen corresponding path program 1041 times [2021-05-22 02:06:07,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:07,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981885070] [2021-05-22 02:06:07,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:07,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:07,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981885070] [2021-05-22 02:06:07,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981885070] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:07,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:07,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:07,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379324629] [2021-05-22 02:06:07,601 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:07,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:07,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:07,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:07,601 INFO L87 Difference]: Start difference. First operand 5121 states and 24315 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:07,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:07,715 INFO L93 Difference]: Finished difference Result 10572 states and 47288 transitions. [2021-05-22 02:06:07,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:07,716 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:07,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:07,743 INFO L225 Difference]: With dead ends: 10572 [2021-05-22 02:06:07,743 INFO L226 Difference]: Without dead ends: 10157 [2021-05-22 02:06:07,743 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:07,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10157 states. [2021-05-22 02:06:07,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10157 to 5169. [2021-05-22 02:06:07,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.738970588235294) internal successors, (24491), 5168 states have internal predecessors, (24491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:07,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24491 transitions. [2021-05-22 02:06:07,984 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24491 transitions. Word has length 29 [2021-05-22 02:06:07,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:07,984 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24491 transitions. [2021-05-22 02:06:07,984 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:07,984 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24491 transitions. [2021-05-22 02:06:07,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:07,993 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:07,993 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:07,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1045 [2021-05-22 02:06:07,993 INFO L430 AbstractCegarLoop]: === Iteration 1047 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:07,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:07,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1445119511, now seen corresponding path program 1042 times [2021-05-22 02:06:07,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:07,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740968815] [2021-05-22 02:06:07,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:08,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:08,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740968815] [2021-05-22 02:06:08,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740968815] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:08,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:08,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:08,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820208097] [2021-05-22 02:06:08,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:08,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:08,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:08,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:08,107 INFO L87 Difference]: Start difference. First operand 5169 states and 24491 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:08,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:08,216 INFO L93 Difference]: Finished difference Result 10300 states and 46279 transitions. [2021-05-22 02:06:08,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:08,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:08,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:08,242 INFO L225 Difference]: With dead ends: 10300 [2021-05-22 02:06:08,242 INFO L226 Difference]: Without dead ends: 9789 [2021-05-22 02:06:08,242 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:08,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9789 states. [2021-05-22 02:06:08,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9789 to 5121. [2021-05-22 02:06:08,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5121 states, 5120 states have (on average 4.7443359375) internal successors, (24291), 5120 states have internal predecessors, (24291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:08,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5121 states to 5121 states and 24291 transitions. [2021-05-22 02:06:08,475 INFO L78 Accepts]: Start accepts. Automaton has 5121 states and 24291 transitions. Word has length 29 [2021-05-22 02:06:08,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:08,475 INFO L482 AbstractCegarLoop]: Abstraction has 5121 states and 24291 transitions. [2021-05-22 02:06:08,475 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:08,475 INFO L276 IsEmpty]: Start isEmpty. Operand 5121 states and 24291 transitions. [2021-05-22 02:06:08,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:08,484 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:08,484 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:08,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1046 [2021-05-22 02:06:08,484 INFO L430 AbstractCegarLoop]: === Iteration 1048 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:08,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:08,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1679376907, now seen corresponding path program 1043 times [2021-05-22 02:06:08,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:08,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120159718] [2021-05-22 02:06:08,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:08,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:08,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:08,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120159718] [2021-05-22 02:06:08,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120159718] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:08,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:08,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:08,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433039382] [2021-05-22 02:06:08,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:08,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:08,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:08,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:08,610 INFO L87 Difference]: Start difference. First operand 5121 states and 24291 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:08,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:08,715 INFO L93 Difference]: Finished difference Result 10658 states and 47657 transitions. [2021-05-22 02:06:08,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:08,715 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:08,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:08,741 INFO L225 Difference]: With dead ends: 10658 [2021-05-22 02:06:08,742 INFO L226 Difference]: Without dead ends: 10181 [2021-05-22 02:06:08,742 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:08,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10181 states. [2021-05-22 02:06:08,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10181 to 5193. [2021-05-22 02:06:08,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5193 states, 5192 states have (on average 4.731702619414484) internal successors, (24567), 5192 states have internal predecessors, (24567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:08,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 24567 transitions. [2021-05-22 02:06:08,978 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 24567 transitions. Word has length 29 [2021-05-22 02:06:08,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:08,979 INFO L482 AbstractCegarLoop]: Abstraction has 5193 states and 24567 transitions. [2021-05-22 02:06:08,979 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:08,979 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 24567 transitions. [2021-05-22 02:06:08,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:08,988 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:08,988 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:08,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1047 [2021-05-22 02:06:08,989 INFO L430 AbstractCegarLoop]: === Iteration 1049 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:08,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:08,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1589617257, now seen corresponding path program 1044 times [2021-05-22 02:06:08,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:08,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652222823] [2021-05-22 02:06:08,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:09,119 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:09,119 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652222823] [2021-05-22 02:06:09,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652222823] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:09,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:09,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:09,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010067960] [2021-05-22 02:06:09,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:09,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:09,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:09,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:09,120 INFO L87 Difference]: Start difference. First operand 5193 states and 24567 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:09,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:09,224 INFO L93 Difference]: Finished difference Result 10324 states and 46355 transitions. [2021-05-22 02:06:09,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:09,224 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:09,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:09,249 INFO L225 Difference]: With dead ends: 10324 [2021-05-22 02:06:09,249 INFO L226 Difference]: Without dead ends: 9765 [2021-05-22 02:06:09,249 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 150.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:09,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9765 states. [2021-05-22 02:06:09,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9765 to 5097. [2021-05-22 02:06:09,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5097 states, 5096 states have (on average 4.750196232339089) internal successors, (24207), 5096 states have internal predecessors, (24207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:09,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5097 states to 5097 states and 24207 transitions. [2021-05-22 02:06:09,524 INFO L78 Accepts]: Start accepts. Automaton has 5097 states and 24207 transitions. Word has length 29 [2021-05-22 02:06:09,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:09,524 INFO L482 AbstractCegarLoop]: Abstraction has 5097 states and 24207 transitions. [2021-05-22 02:06:09,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5097 states and 24207 transitions. [2021-05-22 02:06:09,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:09,533 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:09,533 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:09,533 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1048 [2021-05-22 02:06:09,533 INFO L430 AbstractCegarLoop]: === Iteration 1050 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:09,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:09,533 INFO L82 PathProgramCache]: Analyzing trace with hash 818885131, now seen corresponding path program 1045 times [2021-05-22 02:06:09,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:09,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774887491] [2021-05-22 02:06:09,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:09,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:09,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:09,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774887491] [2021-05-22 02:06:09,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774887491] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:09,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:09,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:09,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414275321] [2021-05-22 02:06:09,639 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:09,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:09,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:09,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:09,639 INFO L87 Difference]: Start difference. First operand 5097 states and 24207 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:09,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:09,745 INFO L93 Difference]: Finished difference Result 10510 states and 46963 transitions. [2021-05-22 02:06:09,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:09,745 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:09,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:09,771 INFO L225 Difference]: With dead ends: 10510 [2021-05-22 02:06:09,771 INFO L226 Difference]: Without dead ends: 10095 [2021-05-22 02:06:09,771 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:09,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10095 states. [2021-05-22 02:06:09,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10095 to 5145. [2021-05-22 02:06:09,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.743195956454121) internal successors, (24399), 5144 states have internal predecessors, (24399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:10,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24399 transitions. [2021-05-22 02:06:10,008 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24399 transitions. Word has length 29 [2021-05-22 02:06:10,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:10,008 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24399 transitions. [2021-05-22 02:06:10,008 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:10,008 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24399 transitions. [2021-05-22 02:06:10,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:10,017 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:10,017 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:10,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1049 [2021-05-22 02:06:10,017 INFO L430 AbstractCegarLoop]: === Iteration 1051 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:10,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:10,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1230293127, now seen corresponding path program 1046 times [2021-05-22 02:06:10,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:10,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522014044] [2021-05-22 02:06:10,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:10,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:10,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522014044] [2021-05-22 02:06:10,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522014044] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:10,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:10,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:10,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248118141] [2021-05-22 02:06:10,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:10,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:10,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:10,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:10,124 INFO L87 Difference]: Start difference. First operand 5145 states and 24399 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:10,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:10,225 INFO L93 Difference]: Finished difference Result 10510 states and 46931 transitions. [2021-05-22 02:06:10,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:10,225 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:10,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:10,251 INFO L225 Difference]: With dead ends: 10510 [2021-05-22 02:06:10,252 INFO L226 Difference]: Without dead ends: 10063 [2021-05-22 02:06:10,252 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:10,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10063 states. [2021-05-22 02:06:10,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10063 to 5113. [2021-05-22 02:06:10,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.747848200312989) internal successors, (24271), 5112 states have internal predecessors, (24271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:10,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24271 transitions. [2021-05-22 02:06:10,488 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24271 transitions. Word has length 29 [2021-05-22 02:06:10,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:10,488 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24271 transitions. [2021-05-22 02:06:10,488 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:10,488 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24271 transitions. [2021-05-22 02:06:10,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:10,497 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:10,497 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:10,497 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1050 [2021-05-22 02:06:10,497 INFO L430 AbstractCegarLoop]: === Iteration 1052 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:10,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:10,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1224078615, now seen corresponding path program 1047 times [2021-05-22 02:06:10,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:10,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975912203] [2021-05-22 02:06:10,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:10,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:10,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:10,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975912203] [2021-05-22 02:06:10,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975912203] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:10,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:10,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:10,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089927100] [2021-05-22 02:06:10,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:10,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:10,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:10,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:10,610 INFO L87 Difference]: Start difference. First operand 5113 states and 24271 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:10,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:10,729 INFO L93 Difference]: Finished difference Result 10478 states and 46851 transitions. [2021-05-22 02:06:10,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:10,729 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:10,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:10,756 INFO L225 Difference]: With dead ends: 10478 [2021-05-22 02:06:10,756 INFO L226 Difference]: Without dead ends: 10063 [2021-05-22 02:06:10,756 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:10,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10063 states. [2021-05-22 02:06:10,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10063 to 5161. [2021-05-22 02:06:10,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.737790697674418) internal successors, (24447), 5160 states have internal predecessors, (24447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:10,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24447 transitions. [2021-05-22 02:06:10,998 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24447 transitions. Word has length 29 [2021-05-22 02:06:10,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:10,998 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24447 transitions. [2021-05-22 02:06:10,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:10,999 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24447 transitions. [2021-05-22 02:06:11,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:11,008 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:11,008 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:11,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1051 [2021-05-22 02:06:11,008 INFO L430 AbstractCegarLoop]: === Iteration 1053 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:11,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:11,008 INFO L82 PathProgramCache]: Analyzing trace with hash 264482251, now seen corresponding path program 1048 times [2021-05-22 02:06:11,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:11,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528450778] [2021-05-22 02:06:11,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:11,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:11,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528450778] [2021-05-22 02:06:11,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528450778] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:11,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:11,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:11,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196702000] [2021-05-22 02:06:11,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:11,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:11,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:11,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:11,115 INFO L87 Difference]: Start difference. First operand 5161 states and 24447 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:11,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:11,228 INFO L93 Difference]: Finished difference Result 10206 states and 45842 transitions. [2021-05-22 02:06:11,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:11,229 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:11,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:11,255 INFO L225 Difference]: With dead ends: 10206 [2021-05-22 02:06:11,255 INFO L226 Difference]: Without dead ends: 9695 [2021-05-22 02:06:11,255 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:11,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9695 states. [2021-05-22 02:06:11,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9695 to 5113. [2021-05-22 02:06:11,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.744718309859155) internal successors, (24255), 5112 states have internal predecessors, (24255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24255 transitions. [2021-05-22 02:06:11,490 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24255 transitions. Word has length 29 [2021-05-22 02:06:11,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:11,491 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24255 transitions. [2021-05-22 02:06:11,491 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:11,491 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24255 transitions. [2021-05-22 02:06:11,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:11,499 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:11,499 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:11,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1052 [2021-05-22 02:06:11,500 INFO L430 AbstractCegarLoop]: === Iteration 1054 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:11,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:11,500 INFO L82 PathProgramCache]: Analyzing trace with hash -588006747, now seen corresponding path program 1049 times [2021-05-22 02:06:11,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:11,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894148702] [2021-05-22 02:06:11,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:11,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:11,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:11,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894148702] [2021-05-22 02:06:11,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894148702] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:11,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:11,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:11,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95472071] [2021-05-22 02:06:11,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:11,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:11,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:11,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:11,607 INFO L87 Difference]: Start difference. First operand 5113 states and 24255 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:11,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:11,703 INFO L93 Difference]: Finished difference Result 10478 states and 46835 transitions. [2021-05-22 02:06:11,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:11,703 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:11,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:11,730 INFO L225 Difference]: With dead ends: 10478 [2021-05-22 02:06:11,730 INFO L226 Difference]: Without dead ends: 10063 [2021-05-22 02:06:11,730 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:11,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10063 states. [2021-05-22 02:06:11,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10063 to 5161. [2021-05-22 02:06:11,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.73468992248062) internal successors, (24431), 5160 states have internal predecessors, (24431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:11,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24431 transitions. [2021-05-22 02:06:11,965 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24431 transitions. Word has length 29 [2021-05-22 02:06:11,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:11,965 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24431 transitions. [2021-05-22 02:06:11,965 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:11,965 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24431 transitions. [2021-05-22 02:06:11,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:11,974 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:11,974 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:11,974 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1053 [2021-05-22 02:06:11,974 INFO L430 AbstractCegarLoop]: === Iteration 1055 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:11,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:11,974 INFO L82 PathProgramCache]: Analyzing trace with hash -2082685305, now seen corresponding path program 1050 times [2021-05-22 02:06:11,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:11,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299676531] [2021-05-22 02:06:11,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:12,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:12,080 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:12,080 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299676531] [2021-05-22 02:06:12,080 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299676531] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:12,080 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:12,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:12,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139961503] [2021-05-22 02:06:12,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:12,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:12,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:12,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:12,080 INFO L87 Difference]: Start difference. First operand 5161 states and 24431 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:12,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:12,200 INFO L93 Difference]: Finished difference Result 10206 states and 45826 transitions. [2021-05-22 02:06:12,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:12,200 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:12,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:12,226 INFO L225 Difference]: With dead ends: 10206 [2021-05-22 02:06:12,226 INFO L226 Difference]: Without dead ends: 9679 [2021-05-22 02:06:12,226 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:12,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9679 states. [2021-05-22 02:06:12,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9679 to 5097. [2021-05-22 02:06:12,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5097 states, 5096 states have (on average 4.748626373626373) internal successors, (24199), 5096 states have internal predecessors, (24199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5097 states to 5097 states and 24199 transitions. [2021-05-22 02:06:12,460 INFO L78 Accepts]: Start accepts. Automaton has 5097 states and 24199 transitions. Word has length 29 [2021-05-22 02:06:12,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:12,461 INFO L482 AbstractCegarLoop]: Abstraction has 5097 states and 24199 transitions. [2021-05-22 02:06:12,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:12,461 INFO L276 IsEmpty]: Start isEmpty. Operand 5097 states and 24199 transitions. [2021-05-22 02:06:12,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:12,469 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:12,469 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:12,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1054 [2021-05-22 02:06:12,469 INFO L430 AbstractCegarLoop]: === Iteration 1056 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:12,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:12,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1099897051, now seen corresponding path program 1051 times [2021-05-22 02:06:12,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:12,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523657751] [2021-05-22 02:06:12,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:12,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:12,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:12,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523657751] [2021-05-22 02:06:12,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523657751] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:12,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:12,589 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:12,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160940265] [2021-05-22 02:06:12,590 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:12,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:12,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:12,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:12,590 INFO L87 Difference]: Start difference. First operand 5097 states and 24199 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:12,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:12,713 INFO L93 Difference]: Finished difference Result 10744 states and 48010 transitions. [2021-05-22 02:06:12,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:12,713 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:12,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:12,740 INFO L225 Difference]: With dead ends: 10744 [2021-05-22 02:06:12,740 INFO L226 Difference]: Without dead ends: 10267 [2021-05-22 02:06:12,740 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:12,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10267 states. [2021-05-22 02:06:12,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10267 to 5169. [2021-05-22 02:06:12,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.740518575851393) internal successors, (24499), 5168 states have internal predecessors, (24499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:12,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24499 transitions. [2021-05-22 02:06:12,982 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24499 transitions. Word has length 29 [2021-05-22 02:06:12,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:12,982 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24499 transitions. [2021-05-22 02:06:12,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:12,982 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24499 transitions. [2021-05-22 02:06:12,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:12,992 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:12,993 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:12,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1055 [2021-05-22 02:06:12,993 INFO L430 AbstractCegarLoop]: === Iteration 1057 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:12,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:12,993 INFO L82 PathProgramCache]: Analyzing trace with hash -18834425, now seen corresponding path program 1052 times [2021-05-22 02:06:12,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:12,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259359369] [2021-05-22 02:06:12,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:13,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:13,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:13,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259359369] [2021-05-22 02:06:13,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259359369] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:13,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:13,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:13,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707347687] [2021-05-22 02:06:13,116 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:13,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:13,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:13,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:13,116 INFO L87 Difference]: Start difference. First operand 5169 states and 24499 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:13,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:13,225 INFO L93 Difference]: Finished difference Result 10682 states and 47693 transitions. [2021-05-22 02:06:13,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:13,225 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:13,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:13,252 INFO L225 Difference]: With dead ends: 10682 [2021-05-22 02:06:13,252 INFO L226 Difference]: Without dead ends: 10219 [2021-05-22 02:06:13,252 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:13,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10219 states. [2021-05-22 02:06:13,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10219 to 5121. [2021-05-22 02:06:13,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5121 states, 5120 states have (on average 4.7458984375) internal successors, (24299), 5120 states have internal predecessors, (24299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:13,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5121 states to 5121 states and 24299 transitions. [2021-05-22 02:06:13,496 INFO L78 Accepts]: Start accepts. Automaton has 5121 states and 24299 transitions. Word has length 29 [2021-05-22 02:06:13,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:13,496 INFO L482 AbstractCegarLoop]: Abstraction has 5121 states and 24299 transitions. [2021-05-22 02:06:13,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:13,496 INFO L276 IsEmpty]: Start isEmpty. Operand 5121 states and 24299 transitions. [2021-05-22 02:06:13,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:13,505 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:13,505 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:13,505 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1056 [2021-05-22 02:06:13,505 INFO L430 AbstractCegarLoop]: === Iteration 1058 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:13,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:13,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1328052871, now seen corresponding path program 1053 times [2021-05-22 02:06:13,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:13,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899582739] [2021-05-22 02:06:13,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:13,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:13,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899582739] [2021-05-22 02:06:13,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899582739] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:13,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:13,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:13,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489204792] [2021-05-22 02:06:13,630 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:13,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:13,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:13,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:13,630 INFO L87 Difference]: Start difference. First operand 5121 states and 24299 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:13,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:13,745 INFO L93 Difference]: Finished difference Result 10658 states and 47665 transitions. [2021-05-22 02:06:13,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:13,746 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:13,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:13,774 INFO L225 Difference]: With dead ends: 10658 [2021-05-22 02:06:13,774 INFO L226 Difference]: Without dead ends: 10181 [2021-05-22 02:06:13,774 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:13,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10181 states. [2021-05-22 02:06:13,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10181 to 5193. [2021-05-22 02:06:14,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5193 states, 5192 states have (on average 4.733243451463791) internal successors, (24575), 5192 states have internal predecessors, (24575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:14,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 24575 transitions. [2021-05-22 02:06:14,015 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 24575 transitions. Word has length 29 [2021-05-22 02:06:14,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:14,015 INFO L482 AbstractCegarLoop]: Abstraction has 5193 states and 24575 transitions. [2021-05-22 02:06:14,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:14,015 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 24575 transitions. [2021-05-22 02:06:14,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:14,024 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:14,024 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:14,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1057 [2021-05-22 02:06:14,024 INFO L430 AbstractCegarLoop]: === Iteration 1059 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:14,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:14,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1179532665, now seen corresponding path program 1054 times [2021-05-22 02:06:14,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:14,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488055963] [2021-05-22 02:06:14,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:14,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:14,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:14,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488055963] [2021-05-22 02:06:14,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488055963] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:14,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:14,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:14,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350839009] [2021-05-22 02:06:14,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:14,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:14,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:14,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:14,150 INFO L87 Difference]: Start difference. First operand 5193 states and 24575 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:14,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:14,264 INFO L93 Difference]: Finished difference Result 10324 states and 46363 transitions. [2021-05-22 02:06:14,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:14,264 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:14,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:14,290 INFO L225 Difference]: With dead ends: 10324 [2021-05-22 02:06:14,291 INFO L226 Difference]: Without dead ends: 9789 [2021-05-22 02:06:14,291 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:14,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9789 states. [2021-05-22 02:06:14,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9789 to 5121. [2021-05-22 02:06:14,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5121 states, 5120 states have (on average 4.7412109375) internal successors, (24275), 5120 states have internal predecessors, (24275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:14,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5121 states to 5121 states and 24275 transitions. [2021-05-22 02:06:14,529 INFO L78 Accepts]: Start accepts. Automaton has 5121 states and 24275 transitions. Word has length 29 [2021-05-22 02:06:14,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:14,529 INFO L482 AbstractCegarLoop]: Abstraction has 5121 states and 24275 transitions. [2021-05-22 02:06:14,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:14,529 INFO L276 IsEmpty]: Start isEmpty. Operand 5121 states and 24275 transitions. [2021-05-22 02:06:14,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:14,537 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:14,538 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:14,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1058 [2021-05-22 02:06:14,538 INFO L430 AbstractCegarLoop]: === Iteration 1060 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:14,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:14,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1716057833, now seen corresponding path program 1055 times [2021-05-22 02:06:14,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:14,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237342176] [2021-05-22 02:06:14,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:14,655 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:14,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237342176] [2021-05-22 02:06:14,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237342176] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:14,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:14,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:14,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858165147] [2021-05-22 02:06:14,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:14,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:14,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:14,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:14,656 INFO L87 Difference]: Start difference. First operand 5121 states and 24275 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:14,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:14,753 INFO L93 Difference]: Finished difference Result 10572 states and 47248 transitions. [2021-05-22 02:06:14,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:14,754 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:14,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:14,781 INFO L225 Difference]: With dead ends: 10572 [2021-05-22 02:06:14,781 INFO L226 Difference]: Without dead ends: 10157 [2021-05-22 02:06:14,782 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:14,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10157 states. [2021-05-22 02:06:14,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10157 to 5169. [2021-05-22 02:06:15,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.7312306501547985) internal successors, (24451), 5168 states have internal predecessors, (24451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:15,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24451 transitions. [2021-05-22 02:06:15,021 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24451 transitions. Word has length 29 [2021-05-22 02:06:15,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:15,021 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24451 transitions. [2021-05-22 02:06:15,021 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:15,021 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24451 transitions. [2021-05-22 02:06:15,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:15,030 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:15,030 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:15,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1059 [2021-05-22 02:06:15,030 INFO L430 AbstractCegarLoop]: === Iteration 1061 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:15,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:15,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1669304505, now seen corresponding path program 1056 times [2021-05-22 02:06:15,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:15,030 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085849244] [2021-05-22 02:06:15,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:15,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:15,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085849244] [2021-05-22 02:06:15,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085849244] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:15,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:15,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:15,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082128654] [2021-05-22 02:06:15,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:15,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:15,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:15,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:15,145 INFO L87 Difference]: Start difference. First operand 5169 states and 24451 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:15,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:15,250 INFO L93 Difference]: Finished difference Result 10300 states and 46239 transitions. [2021-05-22 02:06:15,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:15,251 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:15,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:15,276 INFO L225 Difference]: With dead ends: 10300 [2021-05-22 02:06:15,276 INFO L226 Difference]: Without dead ends: 9757 [2021-05-22 02:06:15,276 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:15,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9757 states. [2021-05-22 02:06:15,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9757 to 5089. [2021-05-22 02:06:15,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 4.751375786163522) internal successors, (24175), 5088 states have internal predecessors, (24175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:15,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 24175 transitions. [2021-05-22 02:06:15,515 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 24175 transitions. Word has length 29 [2021-05-22 02:06:15,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:15,515 INFO L482 AbstractCegarLoop]: Abstraction has 5089 states and 24175 transitions. [2021-05-22 02:06:15,515 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:15,515 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 24175 transitions. [2021-05-22 02:06:15,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:15,524 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:15,524 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:15,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1060 [2021-05-22 02:06:15,524 INFO L430 AbstractCegarLoop]: === Iteration 1062 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:15,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:15,524 INFO L82 PathProgramCache]: Analyzing trace with hash 438318083, now seen corresponding path program 1057 times [2021-05-22 02:06:15,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:15,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995612056] [2021-05-22 02:06:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:15,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:15,638 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:15,638 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995612056] [2021-05-22 02:06:15,638 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995612056] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:15,638 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:15,638 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:15,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892537381] [2021-05-22 02:06:15,639 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:15,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:15,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:15,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:15,639 INFO L87 Difference]: Start difference. First operand 5089 states and 24175 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:15,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:15,737 INFO L93 Difference]: Finished difference Result 11707 states and 52183 transitions. [2021-05-22 02:06:15,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:15,737 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:15,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:15,766 INFO L225 Difference]: With dead ends: 11707 [2021-05-22 02:06:15,766 INFO L226 Difference]: Without dead ends: 11165 [2021-05-22 02:06:15,766 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:15,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11165 states. [2021-05-22 02:06:15,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11165 to 5316. [2021-05-22 02:06:16,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 5315 states have (on average 4.724365004703669) internal successors, (25110), 5315 states have internal predecessors, (25110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:16,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 25110 transitions. [2021-05-22 02:06:16,015 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 25110 transitions. Word has length 29 [2021-05-22 02:06:16,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:16,015 INFO L482 AbstractCegarLoop]: Abstraction has 5316 states and 25110 transitions. [2021-05-22 02:06:16,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:16,016 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 25110 transitions. [2021-05-22 02:06:16,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:16,024 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:16,024 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:16,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1061 [2021-05-22 02:06:16,024 INFO L430 AbstractCegarLoop]: === Iteration 1063 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:16,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:16,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1519380709, now seen corresponding path program 1058 times [2021-05-22 02:06:16,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:16,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494038583] [2021-05-22 02:06:16,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:16,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:16,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:16,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494038583] [2021-05-22 02:06:16,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494038583] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:16,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:16,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:16,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803336018] [2021-05-22 02:06:16,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:16,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:16,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:16,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:16,139 INFO L87 Difference]: Start difference. First operand 5316 states and 25110 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:16,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:16,260 INFO L93 Difference]: Finished difference Result 11642 states and 51814 transitions. [2021-05-22 02:06:16,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:16,260 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:16,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:16,289 INFO L225 Difference]: With dead ends: 11642 [2021-05-22 02:06:16,289 INFO L226 Difference]: Without dead ends: 11022 [2021-05-22 02:06:16,289 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:16,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11022 states. [2021-05-22 02:06:16,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11022 to 5173. [2021-05-22 02:06:16,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 4.743812838360403) internal successors, (24535), 5172 states have internal predecessors, (24535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 24535 transitions. [2021-05-22 02:06:16,536 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 24535 transitions. Word has length 29 [2021-05-22 02:06:16,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:16,536 INFO L482 AbstractCegarLoop]: Abstraction has 5173 states and 24535 transitions. [2021-05-22 02:06:16,536 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:16,536 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 24535 transitions. [2021-05-22 02:06:16,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:16,545 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:16,545 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:16,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1062 [2021-05-22 02:06:16,545 INFO L430 AbstractCegarLoop]: === Iteration 1064 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:16,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:16,545 INFO L82 PathProgramCache]: Analyzing trace with hash -42583963, now seen corresponding path program 1059 times [2021-05-22 02:06:16,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:16,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885489278] [2021-05-22 02:06:16,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:16,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:16,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885489278] [2021-05-22 02:06:16,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885489278] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:16,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:16,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:16,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594162909] [2021-05-22 02:06:16,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:16,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:16,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:16,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:16,668 INFO L87 Difference]: Start difference. First operand 5173 states and 24535 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:16,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:16,768 INFO L93 Difference]: Finished difference Result 11582 states and 51596 transitions. [2021-05-22 02:06:16,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:16,768 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:16,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:16,797 INFO L225 Difference]: With dead ends: 11582 [2021-05-22 02:06:16,798 INFO L226 Difference]: Without dead ends: 11040 [2021-05-22 02:06:16,798 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:16,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11040 states. [2021-05-22 02:06:17,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11040 to 5253. [2021-05-22 02:06:17,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5253 states, 5252 states have (on average 4.726389946686976) internal successors, (24823), 5252 states have internal predecessors, (24823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:17,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5253 states to 5253 states and 24823 transitions. [2021-05-22 02:06:17,046 INFO L78 Accepts]: Start accepts. Automaton has 5253 states and 24823 transitions. Word has length 29 [2021-05-22 02:06:17,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:17,046 INFO L482 AbstractCegarLoop]: Abstraction has 5253 states and 24823 transitions. [2021-05-22 02:06:17,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:17,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5253 states and 24823 transitions. [2021-05-22 02:06:17,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:17,055 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:17,055 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:17,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1063 [2021-05-22 02:06:17,055 INFO L430 AbstractCegarLoop]: === Iteration 1065 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:17,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:17,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1730830235, now seen corresponding path program 1060 times [2021-05-22 02:06:17,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:17,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171997736] [2021-05-22 02:06:17,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:17,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:17,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171997736] [2021-05-22 02:06:17,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171997736] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:17,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:17,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:17,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107529445] [2021-05-22 02:06:17,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:17,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:17,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:17,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:17,176 INFO L87 Difference]: Start difference. First operand 5253 states and 24823 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:17,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:17,273 INFO L93 Difference]: Finished difference Result 11455 states and 50989 transitions. [2021-05-22 02:06:17,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:17,274 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:17,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:17,303 INFO L225 Difference]: With dead ends: 11455 [2021-05-22 02:06:17,303 INFO L226 Difference]: Without dead ends: 10960 [2021-05-22 02:06:17,303 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:17,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10960 states. [2021-05-22 02:06:17,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10960 to 5173. [2021-05-22 02:06:17,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 4.736078886310905) internal successors, (24495), 5172 states have internal predecessors, (24495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:17,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 24495 transitions. [2021-05-22 02:06:17,548 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 24495 transitions. Word has length 29 [2021-05-22 02:06:17,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:17,548 INFO L482 AbstractCegarLoop]: Abstraction has 5173 states and 24495 transitions. [2021-05-22 02:06:17,548 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:17,548 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 24495 transitions. [2021-05-22 02:06:17,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:17,556 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:17,556 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:17,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1064 [2021-05-22 02:06:17,557 INFO L430 AbstractCegarLoop]: === Iteration 1066 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:17,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:17,557 INFO L82 PathProgramCache]: Analyzing trace with hash 345420999, now seen corresponding path program 1061 times [2021-05-22 02:06:17,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:17,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869910449] [2021-05-22 02:06:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:17,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:17,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:17,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869910449] [2021-05-22 02:06:17,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869910449] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:17,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:17,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:17,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130275296] [2021-05-22 02:06:17,679 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:17,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:17,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:17,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:17,680 INFO L87 Difference]: Start difference. First operand 5173 states and 24495 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:17,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:17,787 INFO L93 Difference]: Finished difference Result 11420 states and 50896 transitions. [2021-05-22 02:06:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:17,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:17,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:17,816 INFO L225 Difference]: With dead ends: 11420 [2021-05-22 02:06:17,816 INFO L226 Difference]: Without dead ends: 10943 [2021-05-22 02:06:17,816 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:17,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10943 states. [2021-05-22 02:06:18,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10943 to 5221. [2021-05-22 02:06:18,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5221 states, 5220 states have (on average 4.72624521072797) internal successors, (24671), 5220 states have internal predecessors, (24671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:18,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 24671 transitions. [2021-05-22 02:06:18,065 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 24671 transitions. Word has length 29 [2021-05-22 02:06:18,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:18,065 INFO L482 AbstractCegarLoop]: Abstraction has 5221 states and 24671 transitions. [2021-05-22 02:06:18,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:18,065 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 24671 transitions. [2021-05-22 02:06:18,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:18,074 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:18,074 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:18,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1065 [2021-05-22 02:06:18,074 INFO L430 AbstractCegarLoop]: === Iteration 1067 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:18,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:18,074 INFO L82 PathProgramCache]: Analyzing trace with hash -501375963, now seen corresponding path program 1062 times [2021-05-22 02:06:18,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:18,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582017974] [2021-05-22 02:06:18,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:18,198 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:18,198 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582017974] [2021-05-22 02:06:18,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582017974] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:18,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:18,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:18,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324744937] [2021-05-22 02:06:18,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:18,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:18,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:18,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:18,199 INFO L87 Difference]: Start difference. First operand 5221 states and 24671 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:18,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:18,296 INFO L93 Difference]: Finished difference Result 11358 states and 50579 transitions. [2021-05-22 02:06:18,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:18,297 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:18,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:18,326 INFO L225 Difference]: With dead ends: 11358 [2021-05-22 02:06:18,326 INFO L226 Difference]: Without dead ends: 10839 [2021-05-22 02:06:18,326 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:18,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10839 states. [2021-05-22 02:06:18,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10839 to 5117. [2021-05-22 02:06:18,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.7488272087568415) internal successors, (24295), 5116 states have internal predecessors, (24295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:18,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24295 transitions. [2021-05-22 02:06:18,573 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24295 transitions. Word has length 29 [2021-05-22 02:06:18,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:18,573 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24295 transitions. [2021-05-22 02:06:18,573 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:18,573 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24295 transitions. [2021-05-22 02:06:18,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:18,582 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:18,582 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:18,582 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1066 [2021-05-22 02:06:18,582 INFO L430 AbstractCegarLoop]: === Iteration 1068 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:18,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:18,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1530951397, now seen corresponding path program 1063 times [2021-05-22 02:06:18,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:18,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296356193] [2021-05-22 02:06:18,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:18,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:18,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296356193] [2021-05-22 02:06:18,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296356193] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:18,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:18,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:18,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546625807] [2021-05-22 02:06:18,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:18,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:18,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:18,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:18,700 INFO L87 Difference]: Start difference. First operand 5117 states and 24295 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:18,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:18,799 INFO L93 Difference]: Finished difference Result 11672 states and 52065 transitions. [2021-05-22 02:06:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:18,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:18,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:18,828 INFO L225 Difference]: With dead ends: 11672 [2021-05-22 02:06:18,828 INFO L226 Difference]: Without dead ends: 11130 [2021-05-22 02:06:18,828 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:18,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11130 states. [2021-05-22 02:06:19,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11130 to 5328. [2021-05-22 02:06:19,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5328 states, 5327 states have (on average 4.721231462361555) internal successors, (25150), 5327 states have internal predecessors, (25150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:19,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 25150 transitions. [2021-05-22 02:06:19,078 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 25150 transitions. Word has length 29 [2021-05-22 02:06:19,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:19,078 INFO L482 AbstractCegarLoop]: Abstraction has 5328 states and 25150 transitions. [2021-05-22 02:06:19,078 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:19,078 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 25150 transitions. [2021-05-22 02:06:19,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:19,087 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:19,087 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:19,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1067 [2021-05-22 02:06:19,087 INFO L430 AbstractCegarLoop]: === Iteration 1069 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:19,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:19,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1682953273, now seen corresponding path program 1064 times [2021-05-22 02:06:19,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:19,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844450944] [2021-05-22 02:06:19,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:19,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:19,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844450944] [2021-05-22 02:06:19,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844450944] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:19,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:19,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:19,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945348282] [2021-05-22 02:06:19,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:19,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:19,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:19,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:19,205 INFO L87 Difference]: Start difference. First operand 5328 states and 25150 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:19,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:19,316 INFO L93 Difference]: Finished difference Result 11607 states and 51696 transitions. [2021-05-22 02:06:19,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:19,316 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:19,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:19,344 INFO L225 Difference]: With dead ends: 11607 [2021-05-22 02:06:19,344 INFO L226 Difference]: Without dead ends: 10987 [2021-05-22 02:06:19,344 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:19,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10987 states. [2021-05-22 02:06:19,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10987 to 5185. [2021-05-22 02:06:19,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.738233024691358) internal successors, (24563), 5184 states have internal predecessors, (24563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:19,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24563 transitions. [2021-05-22 02:06:19,589 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24563 transitions. Word has length 29 [2021-05-22 02:06:19,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:19,590 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24563 transitions. [2021-05-22 02:06:19,590 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:19,590 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24563 transitions. [2021-05-22 02:06:19,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:19,598 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:19,598 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:19,598 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1068 [2021-05-22 02:06:19,598 INFO L430 AbstractCegarLoop]: === Iteration 1070 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:19,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:19,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1217904357, now seen corresponding path program 1065 times [2021-05-22 02:06:19,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:19,599 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065889358] [2021-05-22 02:06:19,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:19,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:19,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065889358] [2021-05-22 02:06:19,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065889358] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:19,726 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:19,726 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:19,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885855526] [2021-05-22 02:06:19,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:19,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:19,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:19,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:19,726 INFO L87 Difference]: Start difference. First operand 5185 states and 24563 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:19,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:19,866 INFO L93 Difference]: Finished difference Result 11396 states and 50887 transitions. [2021-05-22 02:06:19,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:19,866 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:19,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:19,895 INFO L225 Difference]: With dead ends: 11396 [2021-05-22 02:06:19,895 INFO L226 Difference]: Without dead ends: 10854 [2021-05-22 02:06:19,895 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:20,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10854 states. [2021-05-22 02:06:20,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10854 to 5289. [2021-05-22 02:06:20,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5289 states, 5288 states have (on average 4.718419062027231) internal successors, (24951), 5288 states have internal predecessors, (24951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:20,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5289 states to 5289 states and 24951 transitions. [2021-05-22 02:06:20,145 INFO L78 Accepts]: Start accepts. Automaton has 5289 states and 24951 transitions. Word has length 29 [2021-05-22 02:06:20,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:20,145 INFO L482 AbstractCegarLoop]: Abstraction has 5289 states and 24951 transitions. [2021-05-22 02:06:20,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:20,146 INFO L276 IsEmpty]: Start isEmpty. Operand 5289 states and 24951 transitions. [2021-05-22 02:06:20,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:20,154 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:20,154 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:20,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1069 [2021-05-22 02:06:20,154 INFO L430 AbstractCegarLoop]: === Iteration 1071 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:20,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:20,154 INFO L82 PathProgramCache]: Analyzing trace with hash 448132837, now seen corresponding path program 1066 times [2021-05-22 02:06:20,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:20,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541368056] [2021-05-22 02:06:20,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:20,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:20,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541368056] [2021-05-22 02:06:20,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541368056] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:20,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:20,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:20,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544882411] [2021-05-22 02:06:20,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:20,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:20,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:20,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:20,281 INFO L87 Difference]: Start difference. First operand 5289 states and 24951 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:20,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:20,388 INFO L93 Difference]: Finished difference Result 10997 states and 49295 transitions. [2021-05-22 02:06:20,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:20,388 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:20,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:20,417 INFO L225 Difference]: With dead ends: 10997 [2021-05-22 02:06:20,417 INFO L226 Difference]: Without dead ends: 10430 [2021-05-22 02:06:20,417 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:20,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10430 states. [2021-05-22 02:06:20,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10430 to 5185. [2021-05-22 02:06:20,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.728202160493828) internal successors, (24511), 5184 states have internal predecessors, (24511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:20,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24511 transitions. [2021-05-22 02:06:20,662 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24511 transitions. Word has length 29 [2021-05-22 02:06:20,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:20,662 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24511 transitions. [2021-05-22 02:06:20,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:20,662 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24511 transitions. [2021-05-22 02:06:20,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:20,671 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:20,671 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:20,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1070 [2021-05-22 02:06:20,671 INFO L430 AbstractCegarLoop]: === Iteration 1072 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:20,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:20,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1605909319, now seen corresponding path program 1067 times [2021-05-22 02:06:20,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:20,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458736221] [2021-05-22 02:06:20,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:20,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:20,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:20,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458736221] [2021-05-22 02:06:20,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458736221] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:20,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:20,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:20,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087350152] [2021-05-22 02:06:20,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:20,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:20,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:20,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:20,797 INFO L87 Difference]: Start difference. First operand 5185 states and 24511 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:20,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:20,909 INFO L93 Difference]: Finished difference Result 11299 states and 50433 transitions. [2021-05-22 02:06:20,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:20,910 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:20,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:20,938 INFO L225 Difference]: With dead ends: 11299 [2021-05-22 02:06:20,938 INFO L226 Difference]: Without dead ends: 10822 [2021-05-22 02:06:20,938 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:21,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10822 states. [2021-05-22 02:06:21,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10822 to 5257. [2021-05-22 02:06:21,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5256 states have (on average 4.715943683409437) internal successors, (24787), 5256 states have internal predecessors, (24787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:21,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 24787 transitions. [2021-05-22 02:06:21,184 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 24787 transitions. Word has length 29 [2021-05-22 02:06:21,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:21,184 INFO L482 AbstractCegarLoop]: Abstraction has 5257 states and 24787 transitions. [2021-05-22 02:06:21,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:21,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 24787 transitions. [2021-05-22 02:06:21,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:21,193 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:21,193 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:21,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1071 [2021-05-22 02:06:21,193 INFO L430 AbstractCegarLoop]: === Iteration 1073 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:21,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:21,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1246231589, now seen corresponding path program 1068 times [2021-05-22 02:06:21,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:21,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569963909] [2021-05-22 02:06:21,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:21,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:21,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569963909] [2021-05-22 02:06:21,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569963909] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:21,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:21,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:21,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85763718] [2021-05-22 02:06:21,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:21,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:21,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:21,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:21,321 INFO L87 Difference]: Start difference. First operand 5257 states and 24787 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:21,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:21,432 INFO L93 Difference]: Finished difference Result 10965 states and 49131 transitions. [2021-05-22 02:06:21,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:21,432 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:21,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:21,460 INFO L225 Difference]: With dead ends: 10965 [2021-05-22 02:06:21,460 INFO L226 Difference]: Without dead ends: 10362 [2021-05-22 02:06:21,460 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:21,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10362 states. [2021-05-22 02:06:21,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10362 to 5117. [2021-05-22 02:06:21,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.743354182955434) internal successors, (24267), 5116 states have internal predecessors, (24267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:21,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24267 transitions. [2021-05-22 02:06:21,709 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24267 transitions. Word has length 29 [2021-05-22 02:06:21,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:21,709 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24267 transitions. [2021-05-22 02:06:21,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:21,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24267 transitions. [2021-05-22 02:06:21,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:21,718 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:21,718 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:21,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1072 [2021-05-22 02:06:21,718 INFO L430 AbstractCegarLoop]: === Iteration 1074 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:21,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:21,718 INFO L82 PathProgramCache]: Analyzing trace with hash 741565127, now seen corresponding path program 1069 times [2021-05-22 02:06:21,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:21,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766643285] [2021-05-22 02:06:21,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:21,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:21,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:21,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766643285] [2021-05-22 02:06:21,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766643285] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:21,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:21,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:21,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39741276] [2021-05-22 02:06:21,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:21,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:21,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:21,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:21,843 INFO L87 Difference]: Start difference. First operand 5117 states and 24267 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:21,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:21,942 INFO L93 Difference]: Finished difference Result 11433 states and 50981 transitions. [2021-05-22 02:06:21,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:21,943 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:21,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:21,971 INFO L225 Difference]: With dead ends: 11433 [2021-05-22 02:06:21,971 INFO L226 Difference]: Without dead ends: 10891 [2021-05-22 02:06:21,971 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:22,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10891 states. [2021-05-22 02:06:22,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10891 to 5237. [2021-05-22 02:06:22,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5236 states have (on average 4.728609625668449) internal successors, (24759), 5236 states have internal predecessors, (24759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:22,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 24759 transitions. [2021-05-22 02:06:22,219 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 24759 transitions. Word has length 29 [2021-05-22 02:06:22,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:22,219 INFO L482 AbstractCegarLoop]: Abstraction has 5237 states and 24759 transitions. [2021-05-22 02:06:22,219 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:22,219 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 24759 transitions. [2021-05-22 02:06:22,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:22,228 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:22,228 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:22,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1073 [2021-05-22 02:06:22,228 INFO L430 AbstractCegarLoop]: === Iteration 1075 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:22,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:22,228 INFO L82 PathProgramCache]: Analyzing trace with hash -946681145, now seen corresponding path program 1070 times [2021-05-22 02:06:22,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:22,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151299448] [2021-05-22 02:06:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:22,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:22,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151299448] [2021-05-22 02:06:22,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151299448] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:22,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:22,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:22,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618714374] [2021-05-22 02:06:22,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:22,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:22,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:22,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:22,358 INFO L87 Difference]: Start difference. First operand 5237 states and 24759 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:22,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:22,464 INFO L93 Difference]: Finished difference Result 11306 states and 50374 transitions. [2021-05-22 02:06:22,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:22,465 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:22,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:22,492 INFO L225 Difference]: With dead ends: 11306 [2021-05-22 02:06:22,492 INFO L226 Difference]: Without dead ends: 10811 [2021-05-22 02:06:22,492 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:22,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10811 states. [2021-05-22 02:06:22,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10811 to 5157. [2021-05-22 02:06:22,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 4.738363072148952) internal successors, (24431), 5156 states have internal predecessors, (24431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:22,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 24431 transitions. [2021-05-22 02:06:22,735 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 24431 transitions. Word has length 29 [2021-05-22 02:06:22,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:22,736 INFO L482 AbstractCegarLoop]: Abstraction has 5157 states and 24431 transitions. [2021-05-22 02:06:22,736 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:22,736 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 24431 transitions. [2021-05-22 02:06:22,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:22,744 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:22,744 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:22,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1074 [2021-05-22 02:06:22,744 INFO L430 AbstractCegarLoop]: === Iteration 1076 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:22,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:22,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1301398619, now seen corresponding path program 1071 times [2021-05-22 02:06:22,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:22,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518011643] [2021-05-22 02:06:22,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:22,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:22,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518011643] [2021-05-22 02:06:22,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518011643] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:22,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:22,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:22,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328792214] [2021-05-22 02:06:22,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:22,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:22,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:22,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:22,875 INFO L87 Difference]: Start difference. First operand 5157 states and 24431 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:22,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:22,972 INFO L93 Difference]: Finished difference Result 11282 states and 50362 transitions. [2021-05-22 02:06:22,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:22,972 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:22,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:23,000 INFO L225 Difference]: With dead ends: 11282 [2021-05-22 02:06:23,000 INFO L226 Difference]: Without dead ends: 10740 [2021-05-22 02:06:23,000 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:23,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10740 states. [2021-05-22 02:06:23,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10740 to 5261. [2021-05-22 02:06:23,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 4.7184410646387835) internal successors, (24819), 5260 states have internal predecessors, (24819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 24819 transitions. [2021-05-22 02:06:23,241 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 24819 transitions. Word has length 29 [2021-05-22 02:06:23,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:23,241 INFO L482 AbstractCegarLoop]: Abstraction has 5261 states and 24819 transitions. [2021-05-22 02:06:23,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:23,241 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 24819 transitions. [2021-05-22 02:06:23,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:23,250 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:23,250 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:23,250 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1075 [2021-05-22 02:06:23,250 INFO L430 AbstractCegarLoop]: === Iteration 1077 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:23,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:23,250 INFO L82 PathProgramCache]: Analyzing trace with hash -2137232697, now seen corresponding path program 1072 times [2021-05-22 02:06:23,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:23,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480578502] [2021-05-22 02:06:23,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:23,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:23,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480578502] [2021-05-22 02:06:23,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480578502] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:23,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:23,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:23,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131946149] [2021-05-22 02:06:23,378 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:23,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:23,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:23,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:23,378 INFO L87 Difference]: Start difference. First operand 5261 states and 24819 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:23,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:23,487 INFO L93 Difference]: Finished difference Result 10883 states and 48770 transitions. [2021-05-22 02:06:23,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:23,488 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:23,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:23,514 INFO L225 Difference]: With dead ends: 10883 [2021-05-22 02:06:23,515 INFO L226 Difference]: Without dead ends: 10316 [2021-05-22 02:06:23,515 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:23,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10316 states. [2021-05-22 02:06:23,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10316 to 5157. [2021-05-22 02:06:23,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 4.730605120248255) internal successors, (24391), 5156 states have internal predecessors, (24391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:23,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 24391 transitions. [2021-05-22 02:06:23,752 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 24391 transitions. Word has length 29 [2021-05-22 02:06:23,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:23,752 INFO L482 AbstractCegarLoop]: Abstraction has 5157 states and 24391 transitions. [2021-05-22 02:06:23,752 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:23,752 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 24391 transitions. [2021-05-22 02:06:23,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:23,761 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:23,761 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:23,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1076 [2021-05-22 02:06:23,761 INFO L430 AbstractCegarLoop]: === Iteration 1078 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:23,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:23,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1962736953, now seen corresponding path program 1073 times [2021-05-22 02:06:23,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:23,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951468679] [2021-05-22 02:06:23,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:23,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:23,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:23,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951468679] [2021-05-22 02:06:23,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951468679] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:23,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:23,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:23,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693208250] [2021-05-22 02:06:23,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:23,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:23,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:23,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:23,880 INFO L87 Difference]: Start difference. First operand 5157 states and 24391 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:23,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:23,975 INFO L93 Difference]: Finished difference Result 11099 states and 49527 transitions. [2021-05-22 02:06:23,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:23,975 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:23,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:24,004 INFO L225 Difference]: With dead ends: 11099 [2021-05-22 02:06:24,004 INFO L226 Difference]: Without dead ends: 10684 [2021-05-22 02:06:24,004 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:24,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10684 states. [2021-05-22 02:06:24,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10684 to 5205. [2021-05-22 02:06:24,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5205 states, 5204 states have (on average 4.720791698693313) internal successors, (24567), 5204 states have internal predecessors, (24567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:24,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5205 states to 5205 states and 24567 transitions. [2021-05-22 02:06:24,248 INFO L78 Accepts]: Start accepts. Automaton has 5205 states and 24567 transitions. Word has length 29 [2021-05-22 02:06:24,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:24,248 INFO L482 AbstractCegarLoop]: Abstraction has 5205 states and 24567 transitions. [2021-05-22 02:06:24,248 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:24,248 INFO L276 IsEmpty]: Start isEmpty. Operand 5205 states and 24567 transitions. [2021-05-22 02:06:24,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:24,257 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:24,257 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:24,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1077 [2021-05-22 02:06:24,257 INFO L430 AbstractCegarLoop]: === Iteration 1079 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:24,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:24,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1053131995, now seen corresponding path program 1074 times [2021-05-22 02:06:24,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:24,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784870129] [2021-05-22 02:06:24,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:24,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:24,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:24,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784870129] [2021-05-22 02:06:24,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784870129] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:24,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:24,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:24,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243910791] [2021-05-22 02:06:24,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:24,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:24,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:24,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:24,373 INFO L87 Difference]: Start difference. First operand 5205 states and 24567 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:24,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:24,480 INFO L93 Difference]: Finished difference Result 10827 states and 48518 transitions. [2021-05-22 02:06:24,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:24,480 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:24,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:24,507 INFO L225 Difference]: With dead ends: 10827 [2021-05-22 02:06:24,507 INFO L226 Difference]: Without dead ends: 10276 [2021-05-22 02:06:24,508 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:24,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10276 states. [2021-05-22 02:06:24,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10276 to 5117. [2021-05-22 02:06:24,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.739444878811572) internal successors, (24247), 5116 states have internal predecessors, (24247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:24,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24247 transitions. [2021-05-22 02:06:24,749 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24247 transitions. Word has length 29 [2021-05-22 02:06:24,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:24,749 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24247 transitions. [2021-05-22 02:06:24,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:24,749 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24247 transitions. [2021-05-22 02:06:24,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:24,758 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:24,758 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:24,758 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1078 [2021-05-22 02:06:24,758 INFO L430 AbstractCegarLoop]: === Iteration 1080 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:24,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:24,759 INFO L82 PathProgramCache]: Analyzing trace with hash 821085865, now seen corresponding path program 1075 times [2021-05-22 02:06:24,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:24,759 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074455750] [2021-05-22 02:06:24,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:24,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:24,882 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:24,882 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074455750] [2021-05-22 02:06:24,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074455750] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:24,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:24,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:24,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821657448] [2021-05-22 02:06:24,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:24,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:24,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:24,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:24,882 INFO L87 Difference]: Start difference. First operand 5117 states and 24247 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:24,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:24,993 INFO L93 Difference]: Finished difference Result 11158 states and 49819 transitions. [2021-05-22 02:06:24,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:24,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:24,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:25,021 INFO L225 Difference]: With dead ends: 11158 [2021-05-22 02:06:25,021 INFO L226 Difference]: Without dead ends: 10681 [2021-05-22 02:06:25,022 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:25,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10681 states. [2021-05-22 02:06:25,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10681 to 5189. [2021-05-22 02:06:25,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 4.731495759444873) internal successors, (24547), 5188 states have internal predecessors, (24547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:25,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 24547 transitions. [2021-05-22 02:06:25,265 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 24547 transitions. Word has length 29 [2021-05-22 02:06:25,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:25,265 INFO L482 AbstractCegarLoop]: Abstraction has 5189 states and 24547 transitions. [2021-05-22 02:06:25,265 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:25,265 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 24547 transitions. [2021-05-22 02:06:25,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:25,274 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:25,274 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:25,274 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1079 [2021-05-22 02:06:25,275 INFO L430 AbstractCegarLoop]: === Iteration 1081 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:25,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:25,275 INFO L82 PathProgramCache]: Analyzing trace with hash -25711097, now seen corresponding path program 1076 times [2021-05-22 02:06:25,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:25,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363905769] [2021-05-22 02:06:25,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:25,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:25,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363905769] [2021-05-22 02:06:25,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363905769] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:25,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:25,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:25,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976956209] [2021-05-22 02:06:25,400 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:25,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:25,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:25,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:25,401 INFO L87 Difference]: Start difference. First operand 5189 states and 24547 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:25,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:25,512 INFO L93 Difference]: Finished difference Result 11096 states and 49502 transitions. [2021-05-22 02:06:25,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:25,512 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:25,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:25,541 INFO L225 Difference]: With dead ends: 11096 [2021-05-22 02:06:25,541 INFO L226 Difference]: Without dead ends: 10633 [2021-05-22 02:06:25,542 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:25,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10633 states. [2021-05-22 02:06:25,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10633 to 5141. [2021-05-22 02:06:25,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5140 states have (on average 4.736770428015564) internal successors, (24347), 5140 states have internal predecessors, (24347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:25,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 24347 transitions. [2021-05-22 02:06:25,783 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 24347 transitions. Word has length 29 [2021-05-22 02:06:25,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:25,783 INFO L482 AbstractCegarLoop]: Abstraction has 5141 states and 24347 transitions. [2021-05-22 02:06:25,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 24347 transitions. [2021-05-22 02:06:25,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:25,792 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:25,792 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:25,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1080 [2021-05-22 02:06:25,792 INFO L430 AbstractCegarLoop]: === Iteration 1082 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:25,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:25,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1221877881, now seen corresponding path program 1077 times [2021-05-22 02:06:25,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:25,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921004383] [2021-05-22 02:06:25,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:25,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:25,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:25,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921004383] [2021-05-22 02:06:25,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921004383] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:25,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:25,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:25,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36074619] [2021-05-22 02:06:25,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:25,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:25,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:25,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:25,917 INFO L87 Difference]: Start difference. First operand 5141 states and 24347 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:26,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:26,043 INFO L93 Difference]: Finished difference Result 11072 states and 49474 transitions. [2021-05-22 02:06:26,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:26,043 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:26,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:26,071 INFO L225 Difference]: With dead ends: 11072 [2021-05-22 02:06:26,071 INFO L226 Difference]: Without dead ends: 10595 [2021-05-22 02:06:26,072 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:26,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10595 states. [2021-05-22 02:06:26,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10595 to 5213. [2021-05-22 02:06:26,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 5212 states have (on average 4.724290099769762) internal successors, (24623), 5212 states have internal predecessors, (24623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:26,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 24623 transitions. [2021-05-22 02:06:26,317 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 24623 transitions. Word has length 29 [2021-05-22 02:06:26,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:26,317 INFO L482 AbstractCegarLoop]: Abstraction has 5213 states and 24623 transitions. [2021-05-22 02:06:26,317 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:26,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 24623 transitions. [2021-05-22 02:06:26,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:26,326 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:26,326 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:26,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1081 [2021-05-22 02:06:26,326 INFO L430 AbstractCegarLoop]: === Iteration 1083 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:26,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:26,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1647618169, now seen corresponding path program 1078 times [2021-05-22 02:06:26,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:26,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124432601] [2021-05-22 02:06:26,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:26,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:26,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:26,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124432601] [2021-05-22 02:06:26,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124432601] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:26,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:26,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:26,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976596894] [2021-05-22 02:06:26,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:26,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:26,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:26,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:26,451 INFO L87 Difference]: Start difference. First operand 5213 states and 24623 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:26,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:26,566 INFO L93 Difference]: Finished difference Result 10738 states and 48172 transitions. [2021-05-22 02:06:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:26,567 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:26,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:26,593 INFO L225 Difference]: With dead ends: 10738 [2021-05-22 02:06:26,593 INFO L226 Difference]: Without dead ends: 10203 [2021-05-22 02:06:26,593 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:26,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10203 states. [2021-05-22 02:06:26,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10203 to 5141. [2021-05-22 02:06:26,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5140 states have (on average 4.732101167315175) internal successors, (24323), 5140 states have internal predecessors, (24323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 24323 transitions. [2021-05-22 02:06:26,826 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 24323 transitions. Word has length 29 [2021-05-22 02:06:26,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:26,826 INFO L482 AbstractCegarLoop]: Abstraction has 5141 states and 24323 transitions. [2021-05-22 02:06:26,826 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:26,826 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 24323 transitions. [2021-05-22 02:06:26,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:26,835 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:26,835 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:26,835 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1082 [2021-05-22 02:06:26,835 INFO L430 AbstractCegarLoop]: === Iteration 1084 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:26,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:26,835 INFO L82 PathProgramCache]: Analyzing trace with hash -2078625947, now seen corresponding path program 1079 times [2021-05-22 02:06:26,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:26,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376087750] [2021-05-22 02:06:26,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:26,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:26,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:26,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376087750] [2021-05-22 02:06:26,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376087750] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:26,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:26,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:26,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050002522] [2021-05-22 02:06:26,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:26,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:26,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:26,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:26,950 INFO L87 Difference]: Start difference. First operand 5141 states and 24323 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:27,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:27,040 INFO L93 Difference]: Finished difference Result 10986 states and 49057 transitions. [2021-05-22 02:06:27,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:27,041 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:27,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:27,068 INFO L225 Difference]: With dead ends: 10986 [2021-05-22 02:06:27,068 INFO L226 Difference]: Without dead ends: 10571 [2021-05-22 02:06:27,068 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:27,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10571 states. [2021-05-22 02:06:27,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10571 to 5189. [2021-05-22 02:06:27,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 4.722243639167309) internal successors, (24499), 5188 states have internal predecessors, (24499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:27,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 24499 transitions. [2021-05-22 02:06:27,305 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 24499 transitions. Word has length 29 [2021-05-22 02:06:27,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:27,306 INFO L482 AbstractCegarLoop]: Abstraction has 5189 states and 24499 transitions. [2021-05-22 02:06:27,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:27,306 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 24499 transitions. [2021-05-22 02:06:27,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:27,314 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:27,314 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:27,314 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1083 [2021-05-22 02:06:27,314 INFO L430 AbstractCegarLoop]: === Iteration 1085 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:27,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:27,315 INFO L82 PathProgramCache]: Analyzing trace with hash 349323975, now seen corresponding path program 1080 times [2021-05-22 02:06:27,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:27,315 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551572784] [2021-05-22 02:06:27,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:27,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:27,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:27,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551572784] [2021-05-22 02:06:27,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551572784] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:27,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:27,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:27,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158460415] [2021-05-22 02:06:27,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:27,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:27,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:27,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:27,430 INFO L87 Difference]: Start difference. First operand 5189 states and 24499 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:27,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:27,536 INFO L93 Difference]: Finished difference Result 10714 states and 48048 transitions. [2021-05-22 02:06:27,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:27,536 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:27,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:27,562 INFO L225 Difference]: With dead ends: 10714 [2021-05-22 02:06:27,562 INFO L226 Difference]: Without dead ends: 10139 [2021-05-22 02:06:27,562 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:27,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10139 states. [2021-05-22 02:06:27,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10139 to 5077. [2021-05-22 02:06:27,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5077 states, 5076 states have (on average 4.7551221434200155) internal successors, (24137), 5076 states have internal predecessors, (24137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:27,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5077 states to 5077 states and 24137 transitions. [2021-05-22 02:06:27,794 INFO L78 Accepts]: Start accepts. Automaton has 5077 states and 24137 transitions. Word has length 29 [2021-05-22 02:06:27,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:27,794 INFO L482 AbstractCegarLoop]: Abstraction has 5077 states and 24137 transitions. [2021-05-22 02:06:27,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:27,794 INFO L276 IsEmpty]: Start isEmpty. Operand 5077 states and 24137 transitions. [2021-05-22 02:06:27,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:27,802 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:27,802 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:27,802 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1084 [2021-05-22 02:06:27,802 INFO L430 AbstractCegarLoop]: === Iteration 1086 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:27,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:27,803 INFO L82 PathProgramCache]: Analyzing trace with hash 944492683, now seen corresponding path program 1081 times [2021-05-22 02:06:27,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:27,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368221129] [2021-05-22 02:06:27,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:27,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:27,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:27,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368221129] [2021-05-22 02:06:27,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368221129] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:27,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:27,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:27,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717581366] [2021-05-22 02:06:27,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:27,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:27,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:27,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:27,921 INFO L87 Difference]: Start difference. First operand 5077 states and 24137 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:28,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:28,031 INFO L93 Difference]: Finished difference Result 11024 states and 49284 transitions. [2021-05-22 02:06:28,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:28,032 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:28,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:28,059 INFO L225 Difference]: With dead ends: 11024 [2021-05-22 02:06:28,059 INFO L226 Difference]: Without dead ends: 10609 [2021-05-22 02:06:28,059 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:28,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10609 states. [2021-05-22 02:06:28,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10609 to 5213. [2021-05-22 02:06:28,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 5212 states have (on average 4.749232540291635) internal successors, (24753), 5212 states have internal predecessors, (24753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:28,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 24753 transitions. [2021-05-22 02:06:28,298 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 24753 transitions. Word has length 29 [2021-05-22 02:06:28,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:28,299 INFO L482 AbstractCegarLoop]: Abstraction has 5213 states and 24753 transitions. [2021-05-22 02:06:28,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:28,299 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 24753 transitions. [2021-05-22 02:06:28,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:28,307 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:28,307 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:28,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1085 [2021-05-22 02:06:28,308 INFO L430 AbstractCegarLoop]: === Iteration 1087 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:28,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:28,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1595654005, now seen corresponding path program 1082 times [2021-05-22 02:06:28,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:28,308 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057607778] [2021-05-22 02:06:28,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:28,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:28,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:28,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057607778] [2021-05-22 02:06:28,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057607778] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:28,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:28,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:28,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104279630] [2021-05-22 02:06:28,427 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:28,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:28,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:28,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:28,427 INFO L87 Difference]: Start difference. First operand 5213 states and 24753 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:28,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:28,523 INFO L93 Difference]: Finished difference Result 11151 states and 49763 transitions. [2021-05-22 02:06:28,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:28,523 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:28,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:28,551 INFO L225 Difference]: With dead ends: 11151 [2021-05-22 02:06:28,551 INFO L226 Difference]: Without dead ends: 10529 [2021-05-22 02:06:28,551 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:28,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10529 states. [2021-05-22 02:06:28,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10529 to 5133. [2021-05-22 02:06:28,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5133 states, 5132 states have (on average 4.754676539360873) internal successors, (24401), 5132 states have internal predecessors, (24401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:28,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5133 states to 5133 states and 24401 transitions. [2021-05-22 02:06:28,792 INFO L78 Accepts]: Start accepts. Automaton has 5133 states and 24401 transitions. Word has length 29 [2021-05-22 02:06:28,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:28,792 INFO L482 AbstractCegarLoop]: Abstraction has 5133 states and 24401 transitions. [2021-05-22 02:06:28,792 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:28,792 INFO L276 IsEmpty]: Start isEmpty. Operand 5133 states and 24401 transitions. [2021-05-22 02:06:28,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:28,800 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:28,800 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:28,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1086 [2021-05-22 02:06:28,801 INFO L430 AbstractCegarLoop]: === Iteration 1088 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:28,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:28,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1029280681, now seen corresponding path program 1083 times [2021-05-22 02:06:28,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:28,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818068480] [2021-05-22 02:06:28,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:28,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:28,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818068480] [2021-05-22 02:06:28,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818068480] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:28,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:28,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:28,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509044839] [2021-05-22 02:06:28,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:28,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:28,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:28,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:28,914 INFO L87 Difference]: Start difference. First operand 5133 states and 24401 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:29,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:29,025 INFO L93 Difference]: Finished difference Result 10849 states and 48501 transitions. [2021-05-22 02:06:29,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:29,025 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:29,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:29,053 INFO L225 Difference]: With dead ends: 10849 [2021-05-22 02:06:29,053 INFO L226 Difference]: Without dead ends: 10434 [2021-05-22 02:06:29,053 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:29,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10434 states. [2021-05-22 02:06:29,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10434 to 5165. [2021-05-22 02:06:29,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.746901626646011) internal successors, (24513), 5164 states have internal predecessors, (24513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:29,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24513 transitions. [2021-05-22 02:06:29,294 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24513 transitions. Word has length 29 [2021-05-22 02:06:29,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:29,294 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24513 transitions. [2021-05-22 02:06:29,294 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:29,294 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24513 transitions. [2021-05-22 02:06:29,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:29,303 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:29,303 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:29,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1087 [2021-05-22 02:06:29,304 INFO L430 AbstractCegarLoop]: === Iteration 1089 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:29,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:29,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1372840313, now seen corresponding path program 1084 times [2021-05-22 02:06:29,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:29,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363528648] [2021-05-22 02:06:29,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:29,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:29,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:29,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363528648] [2021-05-22 02:06:29,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363528648] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:29,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:29,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:29,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847098649] [2021-05-22 02:06:29,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:29,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:29,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:29,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:29,422 INFO L87 Difference]: Start difference. First operand 5165 states and 24513 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:29,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:29,522 INFO L93 Difference]: Finished difference Result 10849 states and 48469 transitions. [2021-05-22 02:06:29,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:29,522 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:29,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:29,550 INFO L225 Difference]: With dead ends: 10849 [2021-05-22 02:06:29,551 INFO L226 Difference]: Without dead ends: 10402 [2021-05-22 02:06:29,551 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:29,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10402 states. [2021-05-22 02:06:29,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10402 to 5133. [2021-05-22 02:06:29,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5133 states, 5132 states have (on average 4.751558846453625) internal successors, (24385), 5132 states have internal predecessors, (24385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:29,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5133 states to 5133 states and 24385 transitions. [2021-05-22 02:06:29,795 INFO L78 Accepts]: Start accepts. Automaton has 5133 states and 24385 transitions. Word has length 29 [2021-05-22 02:06:29,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:29,795 INFO L482 AbstractCegarLoop]: Abstraction has 5133 states and 24385 transitions. [2021-05-22 02:06:29,796 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:29,796 INFO L276 IsEmpty]: Start isEmpty. Operand 5133 states and 24385 transitions. [2021-05-22 02:06:29,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:29,804 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:29,804 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:29,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1088 [2021-05-22 02:06:29,805 INFO L430 AbstractCegarLoop]: === Iteration 1090 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:29,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:29,805 INFO L82 PathProgramCache]: Analyzing trace with hash -651236763, now seen corresponding path program 1085 times [2021-05-22 02:06:29,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:29,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399501295] [2021-05-22 02:06:29,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:29,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:29,925 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:29,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399501295] [2021-05-22 02:06:29,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399501295] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:29,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:29,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:29,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764085917] [2021-05-22 02:06:29,925 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:29,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:29,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:29,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:29,925 INFO L87 Difference]: Start difference. First operand 5133 states and 24385 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:30,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:30,021 INFO L93 Difference]: Finished difference Result 11151 states and 49763 transitions. [2021-05-22 02:06:30,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:30,021 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:30,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:30,049 INFO L225 Difference]: With dead ends: 11151 [2021-05-22 02:06:30,049 INFO L226 Difference]: Without dead ends: 10609 [2021-05-22 02:06:30,049 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:30,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10609 states. [2021-05-22 02:06:30,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10609 to 5213. [2021-05-22 02:06:30,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 5212 states have (on average 4.733883346124329) internal successors, (24673), 5212 states have internal predecessors, (24673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:30,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 24673 transitions. [2021-05-22 02:06:30,346 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 24673 transitions. Word has length 29 [2021-05-22 02:06:30,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:30,346 INFO L482 AbstractCegarLoop]: Abstraction has 5213 states and 24673 transitions. [2021-05-22 02:06:30,346 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:30,346 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 24673 transitions. [2021-05-22 02:06:30,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:30,354 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:30,354 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:30,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1089 [2021-05-22 02:06:30,354 INFO L430 AbstractCegarLoop]: === Iteration 1091 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:30,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:30,355 INFO L82 PathProgramCache]: Analyzing trace with hash -858044729, now seen corresponding path program 1086 times [2021-05-22 02:06:30,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:30,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119828119] [2021-05-22 02:06:30,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:30,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:30,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119828119] [2021-05-22 02:06:30,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119828119] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:30,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:30,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:30,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171912681] [2021-05-22 02:06:30,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:30,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:30,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:30,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:30,472 INFO L87 Difference]: Start difference. First operand 5213 states and 24673 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:30,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:30,568 INFO L93 Difference]: Finished difference Result 11024 states and 49156 transitions. [2021-05-22 02:06:30,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:30,568 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:30,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:30,595 INFO L225 Difference]: With dead ends: 11024 [2021-05-22 02:06:30,595 INFO L226 Difference]: Without dead ends: 10497 [2021-05-22 02:06:30,595 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:30,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10497 states. [2021-05-22 02:06:30,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10497 to 5101. [2021-05-22 02:06:30,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5101 states, 5100 states have (on average 4.756274509803921) internal successors, (24257), 5100 states have internal predecessors, (24257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:30,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 24257 transitions. [2021-05-22 02:06:30,836 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 24257 transitions. Word has length 29 [2021-05-22 02:06:30,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:30,836 INFO L482 AbstractCegarLoop]: Abstraction has 5101 states and 24257 transitions. [2021-05-22 02:06:30,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:30,836 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 24257 transitions. [2021-05-22 02:06:30,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:30,845 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:30,845 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:30,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1090 [2021-05-22 02:06:30,845 INFO L430 AbstractCegarLoop]: === Iteration 1092 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:30,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:30,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1892427543, now seen corresponding path program 1087 times [2021-05-22 02:06:30,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:30,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374153587] [2021-05-22 02:06:30,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:30,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:30,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:30,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374153587] [2021-05-22 02:06:30,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374153587] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:30,968 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:30,968 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:30,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824557863] [2021-05-22 02:06:30,968 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:30,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:30,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:30,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:30,969 INFO L87 Difference]: Start difference. First operand 5101 states and 24257 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:31,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:31,082 INFO L93 Difference]: Finished difference Result 11138 states and 49803 transitions. [2021-05-22 02:06:31,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:31,083 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:31,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:31,110 INFO L225 Difference]: With dead ends: 11138 [2021-05-22 02:06:31,110 INFO L226 Difference]: Without dead ends: 10723 [2021-05-22 02:06:31,110 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:31,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10723 states. [2021-05-22 02:06:31,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10723 to 5221. [2021-05-22 02:06:31,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5221 states, 5220 states have (on average 4.747318007662836) internal successors, (24781), 5220 states have internal predecessors, (24781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:31,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 24781 transitions. [2021-05-22 02:06:31,352 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 24781 transitions. Word has length 29 [2021-05-22 02:06:31,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:31,352 INFO L482 AbstractCegarLoop]: Abstraction has 5221 states and 24781 transitions. [2021-05-22 02:06:31,352 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:31,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 24781 transitions. [2021-05-22 02:06:31,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:31,361 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:31,361 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:31,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1091 [2021-05-22 02:06:31,361 INFO L430 AbstractCegarLoop]: === Iteration 1093 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:31,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:31,361 INFO L82 PathProgramCache]: Analyzing trace with hash -137606935, now seen corresponding path program 1088 times [2021-05-22 02:06:31,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:31,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189222501] [2021-05-22 02:06:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:31,481 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:31,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189222501] [2021-05-22 02:06:31,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189222501] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:31,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:31,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:31,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358530395] [2021-05-22 02:06:31,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:31,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:31,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:31,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:31,482 INFO L87 Difference]: Start difference. First operand 5221 states and 24781 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:31,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:31,579 INFO L93 Difference]: Finished difference Result 11265 states and 50282 transitions. [2021-05-22 02:06:31,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:31,579 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:31,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:31,606 INFO L225 Difference]: With dead ends: 11265 [2021-05-22 02:06:31,606 INFO L226 Difference]: Without dead ends: 10643 [2021-05-22 02:06:31,606 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:31,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10643 states. [2021-05-22 02:06:31,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10643 to 5141. [2021-05-22 02:06:31,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5140 states have (on average 4.751167315175097) internal successors, (24421), 5140 states have internal predecessors, (24421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 24421 transitions. [2021-05-22 02:06:31,842 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 24421 transitions. Word has length 29 [2021-05-22 02:06:31,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:31,842 INFO L482 AbstractCegarLoop]: Abstraction has 5141 states and 24421 transitions. [2021-05-22 02:06:31,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:31,843 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 24421 transitions. [2021-05-22 02:06:31,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:31,851 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:31,851 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:31,851 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1092 [2021-05-22 02:06:31,851 INFO L430 AbstractCegarLoop]: === Iteration 1094 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:31,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:31,851 INFO L82 PathProgramCache]: Analyzing trace with hash 2070395945, now seen corresponding path program 1089 times [2021-05-22 02:06:31,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:31,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565772989] [2021-05-22 02:06:31,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:31,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:31,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565772989] [2021-05-22 02:06:31,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565772989] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:31,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:31,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:31,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029435689] [2021-05-22 02:06:31,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:31,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:31,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:31,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:31,975 INFO L87 Difference]: Start difference. First operand 5141 states and 24421 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:32,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:32,096 INFO L93 Difference]: Finished difference Result 11039 states and 49356 transitions. [2021-05-22 02:06:32,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:32,096 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:32,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:32,123 INFO L225 Difference]: With dead ends: 11039 [2021-05-22 02:06:32,123 INFO L226 Difference]: Without dead ends: 10624 [2021-05-22 02:06:32,123 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:32,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10624 states. [2021-05-22 02:06:32,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10624 to 5189. [2021-05-22 02:06:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 4.741133384734002) internal successors, (24597), 5188 states have internal predecessors, (24597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:32,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 24597 transitions. [2021-05-22 02:06:32,366 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 24597 transitions. Word has length 29 [2021-05-22 02:06:32,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:32,366 INFO L482 AbstractCegarLoop]: Abstraction has 5189 states and 24597 transitions. [2021-05-22 02:06:32,366 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:32,366 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 24597 transitions. [2021-05-22 02:06:32,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:32,374 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:32,374 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:32,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1093 [2021-05-22 02:06:32,375 INFO L430 AbstractCegarLoop]: === Iteration 1095 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:32,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:32,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1555715019, now seen corresponding path program 1090 times [2021-05-22 02:06:32,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:32,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887581081] [2021-05-22 02:06:32,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:32,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:32,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:32,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887581081] [2021-05-22 02:06:32,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887581081] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:32,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:32,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:32,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645974528] [2021-05-22 02:06:32,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:32,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:32,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:32,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:32,499 INFO L87 Difference]: Start difference. First operand 5189 states and 24597 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:32,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:32,618 INFO L93 Difference]: Finished difference Result 11099 states and 49572 transitions. [2021-05-22 02:06:32,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:32,618 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:32,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:32,645 INFO L225 Difference]: With dead ends: 11099 [2021-05-22 02:06:32,645 INFO L226 Difference]: Without dead ends: 10576 [2021-05-22 02:06:32,646 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:32,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10576 states. [2021-05-22 02:06:32,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10576 to 5141. [2021-05-22 02:06:32,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5140 states have (on average 4.746498054474708) internal successors, (24397), 5140 states have internal predecessors, (24397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:32,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 24397 transitions. [2021-05-22 02:06:32,888 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 24397 transitions. Word has length 29 [2021-05-22 02:06:32,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:32,888 INFO L482 AbstractCegarLoop]: Abstraction has 5141 states and 24397 transitions. [2021-05-22 02:06:32,888 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:32,888 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 24397 transitions. [2021-05-22 02:06:32,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:32,897 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:32,897 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:32,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1094 [2021-05-22 02:06:32,897 INFO L430 AbstractCegarLoop]: === Iteration 1096 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:32,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:32,897 INFO L82 PathProgramCache]: Analyzing trace with hash -2000423989, now seen corresponding path program 1091 times [2021-05-22 02:06:32,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:32,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128270893] [2021-05-22 02:06:32,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:33,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:33,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128270893] [2021-05-22 02:06:33,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128270893] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:33,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:33,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:33,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935145064] [2021-05-22 02:06:33,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:33,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:33,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:33,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:33,012 INFO L87 Difference]: Start difference. First operand 5141 states and 24397 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:33,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:33,115 INFO L93 Difference]: Finished difference Result 11355 states and 50677 transitions. [2021-05-22 02:06:33,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:33,115 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:33,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:33,142 INFO L225 Difference]: With dead ends: 11355 [2021-05-22 02:06:33,142 INFO L226 Difference]: Without dead ends: 10813 [2021-05-22 02:06:33,143 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:33,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10813 states. [2021-05-22 02:06:33,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10813 to 5251. [2021-05-22 02:06:33,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 4.7241904761904765) internal successors, (24802), 5250 states have internal predecessors, (24802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:33,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 24802 transitions. [2021-05-22 02:06:33,396 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 24802 transitions. Word has length 29 [2021-05-22 02:06:33,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:33,396 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 24802 transitions. [2021-05-22 02:06:33,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:33,397 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 24802 transitions. [2021-05-22 02:06:33,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:33,405 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:33,405 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:33,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1095 [2021-05-22 02:06:33,406 INFO L430 AbstractCegarLoop]: === Iteration 1097 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:33,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:33,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1553591209, now seen corresponding path program 1092 times [2021-05-22 02:06:33,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:33,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252323237] [2021-05-22 02:06:33,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:33,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:33,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252323237] [2021-05-22 02:06:33,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252323237] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:33,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:33,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:33,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542510024] [2021-05-22 02:06:33,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:33,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:33,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:33,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:33,525 INFO L87 Difference]: Start difference. First operand 5251 states and 24802 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:33,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:33,642 INFO L93 Difference]: Finished difference Result 11288 states and 50304 transitions. [2021-05-22 02:06:33,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:33,643 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:33,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:33,670 INFO L225 Difference]: With dead ends: 11288 [2021-05-22 02:06:33,670 INFO L226 Difference]: Without dead ends: 10663 [2021-05-22 02:06:33,670 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:33,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10663 states. [2021-05-22 02:06:33,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10663 to 5101. [2021-05-22 02:06:33,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5101 states, 5100 states have (on average 4.753137254901961) internal successors, (24241), 5100 states have internal predecessors, (24241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:33,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 24241 transitions. [2021-05-22 02:06:33,915 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 24241 transitions. Word has length 29 [2021-05-22 02:06:33,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:33,915 INFO L482 AbstractCegarLoop]: Abstraction has 5101 states and 24241 transitions. [2021-05-22 02:06:33,915 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:33,915 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 24241 transitions. [2021-05-22 02:06:33,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:33,924 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:33,924 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:33,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1096 [2021-05-22 02:06:33,924 INFO L430 AbstractCegarLoop]: === Iteration 1098 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:33,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:33,924 INFO L82 PathProgramCache]: Analyzing trace with hash -385343545, now seen corresponding path program 1093 times [2021-05-22 02:06:33,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:33,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810408590] [2021-05-22 02:06:33,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:34,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:34,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:34,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810408590] [2021-05-22 02:06:34,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810408590] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:34,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:34,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:34,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082698327] [2021-05-22 02:06:34,040 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:34,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:34,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:34,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:34,040 INFO L87 Difference]: Start difference. First operand 5101 states and 24241 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:34,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:34,152 INFO L93 Difference]: Finished difference Result 10702 states and 47870 transitions. [2021-05-22 02:06:34,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:34,152 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:34,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:34,179 INFO L225 Difference]: With dead ends: 10702 [2021-05-22 02:06:34,179 INFO L226 Difference]: Without dead ends: 10287 [2021-05-22 02:06:34,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:34,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10287 states. [2021-05-22 02:06:34,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10287 to 5149. [2021-05-22 02:06:34,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5149 states, 5148 states have (on average 4.746114996114996) internal successors, (24433), 5148 states have internal predecessors, (24433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:34,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 24433 transitions. [2021-05-22 02:06:34,418 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 24433 transitions. Word has length 29 [2021-05-22 02:06:34,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:34,418 INFO L482 AbstractCegarLoop]: Abstraction has 5149 states and 24433 transitions. [2021-05-22 02:06:34,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:34,418 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 24433 transitions. [2021-05-22 02:06:34,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:34,427 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:34,427 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:34,427 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1097 [2021-05-22 02:06:34,427 INFO L430 AbstractCegarLoop]: === Iteration 1099 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:34,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:34,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1507502757, now seen corresponding path program 1094 times [2021-05-22 02:06:34,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:34,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569045597] [2021-05-22 02:06:34,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:34,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:34,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569045597] [2021-05-22 02:06:34,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569045597] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:34,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:34,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:34,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828394079] [2021-05-22 02:06:34,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:34,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:34,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:34,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:34,551 INFO L87 Difference]: Start difference. First operand 5149 states and 24433 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:34,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:34,658 INFO L93 Difference]: Finished difference Result 10702 states and 47838 transitions. [2021-05-22 02:06:34,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:34,658 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:34,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:34,685 INFO L225 Difference]: With dead ends: 10702 [2021-05-22 02:06:34,685 INFO L226 Difference]: Without dead ends: 10255 [2021-05-22 02:06:34,686 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:34,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10255 states. [2021-05-22 02:06:34,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10255 to 5117. [2021-05-22 02:06:34,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.750781860828773) internal successors, (24305), 5116 states have internal predecessors, (24305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:34,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24305 transitions. [2021-05-22 02:06:34,925 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24305 transitions. Word has length 29 [2021-05-22 02:06:34,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:34,925 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24305 transitions. [2021-05-22 02:06:34,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:34,925 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24305 transitions. [2021-05-22 02:06:34,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:34,934 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:34,934 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:34,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1098 [2021-05-22 02:06:34,934 INFO L430 AbstractCegarLoop]: === Iteration 1100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:34,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:34,934 INFO L82 PathProgramCache]: Analyzing trace with hash -866245591, now seen corresponding path program 1095 times [2021-05-22 02:06:34,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:34,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525042213] [2021-05-22 02:06:34,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:35,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:35,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525042213] [2021-05-22 02:06:35,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525042213] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:35,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:35,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:35,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515032426] [2021-05-22 02:06:35,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:35,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:35,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:35,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:35,059 INFO L87 Difference]: Start difference. First operand 5117 states and 24305 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:35,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:35,174 INFO L93 Difference]: Finished difference Result 10778 states and 48198 transitions. [2021-05-22 02:06:35,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:35,174 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:35,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:35,201 INFO L225 Difference]: With dead ends: 10778 [2021-05-22 02:06:35,201 INFO L226 Difference]: Without dead ends: 10363 [2021-05-22 02:06:35,201 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:35,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10363 states. [2021-05-22 02:06:35,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10363 to 5165. [2021-05-22 02:06:35,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.740704879938033) internal successors, (24481), 5164 states have internal predecessors, (24481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24481 transitions. [2021-05-22 02:06:35,445 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24481 transitions. Word has length 29 [2021-05-22 02:06:35,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:35,445 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24481 transitions. [2021-05-22 02:06:35,445 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:35,445 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24481 transitions. [2021-05-22 02:06:35,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:35,456 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:35,456 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:35,456 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1099 [2021-05-22 02:06:35,456 INFO L430 AbstractCegarLoop]: === Iteration 1101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:35,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:35,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1432602473, now seen corresponding path program 1096 times [2021-05-22 02:06:35,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:35,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350950720] [2021-05-22 02:06:35,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:35,581 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:35,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350950720] [2021-05-22 02:06:35,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350950720] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:35,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:35,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:35,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878195703] [2021-05-22 02:06:35,582 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:35,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:35,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:35,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:35,582 INFO L87 Difference]: Start difference. First operand 5165 states and 24481 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:35,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:35,700 INFO L93 Difference]: Finished difference Result 10838 states and 48414 transitions. [2021-05-22 02:06:35,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:35,700 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:35,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:35,727 INFO L225 Difference]: With dead ends: 10838 [2021-05-22 02:06:35,728 INFO L226 Difference]: Without dead ends: 10315 [2021-05-22 02:06:35,728 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:35,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10315 states. [2021-05-22 02:06:35,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10315 to 5117. [2021-05-22 02:06:35,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.747654417513683) internal successors, (24289), 5116 states have internal predecessors, (24289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24289 transitions. [2021-05-22 02:06:35,967 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24289 transitions. Word has length 29 [2021-05-22 02:06:35,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:35,967 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24289 transitions. [2021-05-22 02:06:35,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:35,967 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24289 transitions. [2021-05-22 02:06:35,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:35,975 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:35,975 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:35,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1100 [2021-05-22 02:06:35,976 INFO L430 AbstractCegarLoop]: === Iteration 1102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:35,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:35,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1376806693, now seen corresponding path program 1097 times [2021-05-22 02:06:35,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:35,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220499918] [2021-05-22 02:06:35,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:36,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:36,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220499918] [2021-05-22 02:06:36,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220499918] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:36,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:36,098 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:36,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997974427] [2021-05-22 02:06:36,098 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:36,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:36,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:36,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:36,098 INFO L87 Difference]: Start difference. First operand 5117 states and 24289 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:36,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:36,197 INFO L93 Difference]: Finished difference Result 10778 states and 48182 transitions. [2021-05-22 02:06:36,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:36,197 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:36,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:36,224 INFO L225 Difference]: With dead ends: 10778 [2021-05-22 02:06:36,225 INFO L226 Difference]: Without dead ends: 10363 [2021-05-22 02:06:36,225 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:36,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10363 states. [2021-05-22 02:06:36,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10363 to 5165. [2021-05-22 02:06:36,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.737606506584044) internal successors, (24465), 5164 states have internal predecessors, (24465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:36,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24465 transitions. [2021-05-22 02:06:36,471 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24465 transitions. Word has length 29 [2021-05-22 02:06:36,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:36,471 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24465 transitions. [2021-05-22 02:06:36,471 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:36,471 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24465 transitions. [2021-05-22 02:06:36,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:36,480 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:36,480 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:36,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1101 [2021-05-22 02:06:36,480 INFO L430 AbstractCegarLoop]: === Iteration 1103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:36,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:36,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1837097977, now seen corresponding path program 1098 times [2021-05-22 02:06:36,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:36,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013254331] [2021-05-22 02:06:36,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:36,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:36,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:36,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013254331] [2021-05-22 02:06:36,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013254331] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:36,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:36,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:36,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026531339] [2021-05-22 02:06:36,601 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:36,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:36,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:36,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:36,601 INFO L87 Difference]: Start difference. First operand 5165 states and 24465 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:36,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:36,721 INFO L93 Difference]: Finished difference Result 10838 states and 48398 transitions. [2021-05-22 02:06:36,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:36,721 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:36,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:36,748 INFO L225 Difference]: With dead ends: 10838 [2021-05-22 02:06:36,748 INFO L226 Difference]: Without dead ends: 10299 [2021-05-22 02:06:36,748 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:36,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10299 states. [2021-05-22 02:06:36,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10299 to 5101. [2021-05-22 02:06:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5101 states, 5100 states have (on average 4.751568627450981) internal successors, (24233), 5100 states have internal predecessors, (24233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 24233 transitions. [2021-05-22 02:06:36,985 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 24233 transitions. Word has length 29 [2021-05-22 02:06:36,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:36,985 INFO L482 AbstractCegarLoop]: Abstraction has 5101 states and 24233 transitions. [2021-05-22 02:06:36,985 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:36,985 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 24233 transitions. [2021-05-22 02:06:36,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:36,993 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:36,993 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:36,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1102 [2021-05-22 02:06:36,993 INFO L430 AbstractCegarLoop]: === Iteration 1104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:36,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:36,994 INFO L82 PathProgramCache]: Analyzing trace with hash -2006154365, now seen corresponding path program 1099 times [2021-05-22 02:06:36,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:36,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558607963] [2021-05-22 02:06:36,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:37,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:37,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:37,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558607963] [2021-05-22 02:06:37,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558607963] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:37,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:37,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:37,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795087049] [2021-05-22 02:06:37,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:37,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:37,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:37,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:37,112 INFO L87 Difference]: Start difference. First operand 5101 states and 24233 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:37,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:37,211 INFO L93 Difference]: Finished difference Result 11265 states and 50306 transitions. [2021-05-22 02:06:37,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:37,211 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:37,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:37,240 INFO L225 Difference]: With dead ends: 11265 [2021-05-22 02:06:37,240 INFO L226 Difference]: Without dead ends: 10723 [2021-05-22 02:06:37,240 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:37,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10723 states. [2021-05-22 02:06:37,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10723 to 5221. [2021-05-22 02:06:37,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5221 states, 5220 states have (on average 4.736590038314176) internal successors, (24725), 5220 states have internal predecessors, (24725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:37,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 24725 transitions. [2021-05-22 02:06:37,482 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 24725 transitions. Word has length 29 [2021-05-22 02:06:37,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:37,482 INFO L482 AbstractCegarLoop]: Abstraction has 5221 states and 24725 transitions. [2021-05-22 02:06:37,482 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:37,482 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 24725 transitions. [2021-05-22 02:06:37,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:37,490 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:37,490 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:37,490 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1103 [2021-05-22 02:06:37,490 INFO L430 AbstractCegarLoop]: === Iteration 1105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:37,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:37,491 INFO L82 PathProgramCache]: Analyzing trace with hash 2082004965, now seen corresponding path program 1100 times [2021-05-22 02:06:37,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:37,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301638293] [2021-05-22 02:06:37,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:37,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:37,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301638293] [2021-05-22 02:06:37,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301638293] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:37,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:37,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:37,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973256458] [2021-05-22 02:06:37,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:37,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:37,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:37,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:37,609 INFO L87 Difference]: Start difference. First operand 5221 states and 24725 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:37,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:37,716 INFO L93 Difference]: Finished difference Result 11138 states and 49699 transitions. [2021-05-22 02:06:37,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:37,717 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:37,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:37,744 INFO L225 Difference]: With dead ends: 11138 [2021-05-22 02:06:37,744 INFO L226 Difference]: Without dead ends: 10643 [2021-05-22 02:06:37,744 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:37,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10643 states. [2021-05-22 02:06:37,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10643 to 5141. [2021-05-22 02:06:37,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5140 states have (on average 4.746498054474708) internal successors, (24397), 5140 states have internal predecessors, (24397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:37,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 24397 transitions. [2021-05-22 02:06:37,985 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 24397 transitions. Word has length 29 [2021-05-22 02:06:37,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:37,985 INFO L482 AbstractCegarLoop]: Abstraction has 5141 states and 24397 transitions. [2021-05-22 02:06:37,986 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:37,986 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 24397 transitions. [2021-05-22 02:06:37,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:37,994 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:37,994 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:37,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1104 [2021-05-22 02:06:37,994 INFO L430 AbstractCegarLoop]: === Iteration 1106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:37,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:37,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1807910885, now seen corresponding path program 1101 times [2021-05-22 02:06:37,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:37,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304971456] [2021-05-22 02:06:37,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:38,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:38,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:38,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304971456] [2021-05-22 02:06:38,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304971456] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:38,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:38,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:38,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96404097] [2021-05-22 02:06:38,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:38,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:38,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:38,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:38,106 INFO L87 Difference]: Start difference. First operand 5141 states and 24397 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:38,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:38,218 INFO L93 Difference]: Finished difference Result 11355 states and 50677 transitions. [2021-05-22 02:06:38,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:38,218 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:38,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:38,246 INFO L225 Difference]: With dead ends: 11355 [2021-05-22 02:06:38,246 INFO L226 Difference]: Without dead ends: 10813 [2021-05-22 02:06:38,246 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:38,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10813 states. [2021-05-22 02:06:38,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10813 to 5251. [2021-05-22 02:06:38,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 4.7241904761904765) internal successors, (24802), 5250 states have internal predecessors, (24802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:38,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 24802 transitions. [2021-05-22 02:06:38,492 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 24802 transitions. Word has length 29 [2021-05-22 02:06:38,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:38,492 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 24802 transitions. [2021-05-22 02:06:38,492 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:38,492 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 24802 transitions. [2021-05-22 02:06:38,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:38,501 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:38,501 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:38,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1105 [2021-05-22 02:06:38,501 INFO L430 AbstractCegarLoop]: === Iteration 1107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:38,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:38,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1168205979, now seen corresponding path program 1102 times [2021-05-22 02:06:38,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:38,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923221379] [2021-05-22 02:06:38,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:38,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:38,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923221379] [2021-05-22 02:06:38,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923221379] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:38,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:38,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:38,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552352566] [2021-05-22 02:06:38,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:38,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:38,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:38,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:38,612 INFO L87 Difference]: Start difference. First operand 5251 states and 24802 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:38,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:38,740 INFO L93 Difference]: Finished difference Result 11288 states and 50304 transitions. [2021-05-22 02:06:38,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:38,741 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:38,768 INFO L225 Difference]: With dead ends: 11288 [2021-05-22 02:06:38,768 INFO L226 Difference]: Without dead ends: 10703 [2021-05-22 02:06:38,768 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:38,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10703 states. [2021-05-22 02:06:38,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10703 to 5141. [2021-05-22 02:06:38,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5140 states have (on average 4.738715953307393) internal successors, (24357), 5140 states have internal predecessors, (24357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:39,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 24357 transitions. [2021-05-22 02:06:39,011 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 24357 transitions. Word has length 29 [2021-05-22 02:06:39,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:39,012 INFO L482 AbstractCegarLoop]: Abstraction has 5141 states and 24357 transitions. [2021-05-22 02:06:39,012 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:39,012 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 24357 transitions. [2021-05-22 02:06:39,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:39,020 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:39,020 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:39,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1106 [2021-05-22 02:06:39,020 INFO L430 AbstractCegarLoop]: === Iteration 1108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:39,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:39,020 INFO L82 PathProgramCache]: Analyzing trace with hash 214987591, now seen corresponding path program 1103 times [2021-05-22 02:06:39,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:39,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086753880] [2021-05-22 02:06:39,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:39,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:39,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086753880] [2021-05-22 02:06:39,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086753880] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:39,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:39,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:39,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031983650] [2021-05-22 02:06:39,141 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:39,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:39,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:39,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:39,141 INFO L87 Difference]: Start difference. First operand 5141 states and 24357 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:39,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:39,231 INFO L93 Difference]: Finished difference Result 11039 states and 49292 transitions. [2021-05-22 02:06:39,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:39,232 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:39,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:39,258 INFO L225 Difference]: With dead ends: 11039 [2021-05-22 02:06:39,258 INFO L226 Difference]: Without dead ends: 10624 [2021-05-22 02:06:39,258 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:39,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10624 states. [2021-05-22 02:06:39,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10624 to 5189. [2021-05-22 02:06:39,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 4.728797224363917) internal successors, (24533), 5188 states have internal predecessors, (24533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:39,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 24533 transitions. [2021-05-22 02:06:39,498 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 24533 transitions. Word has length 29 [2021-05-22 02:06:39,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:39,498 INFO L482 AbstractCegarLoop]: Abstraction has 5189 states and 24533 transitions. [2021-05-22 02:06:39,498 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:39,499 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 24533 transitions. [2021-05-22 02:06:39,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:39,507 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:39,507 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:39,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1107 [2021-05-22 02:06:39,507 INFO L430 AbstractCegarLoop]: === Iteration 1109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:39,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:39,508 INFO L82 PathProgramCache]: Analyzing trace with hash -631809371, now seen corresponding path program 1104 times [2021-05-22 02:06:39,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:39,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638645955] [2021-05-22 02:06:39,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:39,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:39,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638645955] [2021-05-22 02:06:39,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638645955] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:39,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:39,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:39,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448250150] [2021-05-22 02:06:39,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:39,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:39,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:39,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:39,629 INFO L87 Difference]: Start difference. First operand 5189 states and 24533 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:39,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:39,738 INFO L93 Difference]: Finished difference Result 11099 states and 49508 transitions. [2021-05-22 02:06:39,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:39,739 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:39,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:39,766 INFO L225 Difference]: With dead ends: 11099 [2021-05-22 02:06:39,766 INFO L226 Difference]: Without dead ends: 10520 [2021-05-22 02:06:39,766 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:39,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10520 states. [2021-05-22 02:06:39,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10520 to 5085. [2021-05-22 02:06:39,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5085 states, 5084 states have (on average 4.755507474429583) internal successors, (24177), 5084 states have internal predecessors, (24177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:40,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5085 states to 5085 states and 24177 transitions. [2021-05-22 02:06:40,010 INFO L78 Accepts]: Start accepts. Automaton has 5085 states and 24177 transitions. Word has length 29 [2021-05-22 02:06:40,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:40,010 INFO L482 AbstractCegarLoop]: Abstraction has 5085 states and 24177 transitions. [2021-05-22 02:06:40,010 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:40,010 INFO L276 IsEmpty]: Start isEmpty. Operand 5085 states and 24177 transitions. [2021-05-22 02:06:40,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:40,019 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:40,019 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:40,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1108 [2021-05-22 02:06:40,019 INFO L430 AbstractCegarLoop]: === Iteration 1110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:40,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:40,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1150082583, now seen corresponding path program 1105 times [2021-05-22 02:06:40,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:40,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722788541] [2021-05-22 02:06:40,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:40,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:40,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:40,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722788541] [2021-05-22 02:06:40,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722788541] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:40,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:40,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:40,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905635342] [2021-05-22 02:06:40,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:40,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:40,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:40,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:40,140 INFO L87 Difference]: Start difference. First operand 5085 states and 24177 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:40,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:40,251 INFO L93 Difference]: Finished difference Result 10974 states and 49053 transitions. [2021-05-22 02:06:40,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:40,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:40,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:40,279 INFO L225 Difference]: With dead ends: 10974 [2021-05-22 02:06:40,279 INFO L226 Difference]: Without dead ends: 10559 [2021-05-22 02:06:40,279 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:40,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10559 states. [2021-05-22 02:06:40,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10559 to 5213. [2021-05-22 02:06:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 5212 states have (on average 4.747697620874904) internal successors, (24745), 5212 states have internal predecessors, (24745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:40,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 24745 transitions. [2021-05-22 02:06:40,522 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 24745 transitions. Word has length 29 [2021-05-22 02:06:40,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:40,522 INFO L482 AbstractCegarLoop]: Abstraction has 5213 states and 24745 transitions. [2021-05-22 02:06:40,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:40,522 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 24745 transitions. [2021-05-22 02:06:40,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:40,530 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:40,530 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:40,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1109 [2021-05-22 02:06:40,530 INFO L430 AbstractCegarLoop]: === Iteration 1111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:40,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:40,530 INFO L82 PathProgramCache]: Analyzing trace with hash 604738025, now seen corresponding path program 1106 times [2021-05-22 02:06:40,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:40,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430751059] [2021-05-22 02:06:40,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:40,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:40,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430751059] [2021-05-22 02:06:40,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430751059] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:40,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:40,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:40,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731126668] [2021-05-22 02:06:40,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:40,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:40,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:40,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:40,652 INFO L87 Difference]: Start difference. First operand 5213 states and 24745 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:40,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:40,786 INFO L93 Difference]: Finished difference Result 11101 states and 49532 transitions. [2021-05-22 02:06:40,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:40,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:40,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:40,815 INFO L225 Difference]: With dead ends: 11101 [2021-05-22 02:06:40,815 INFO L226 Difference]: Without dead ends: 10479 [2021-05-22 02:06:40,815 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:40,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10479 states. [2021-05-22 02:06:41,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10479 to 5133. [2021-05-22 02:06:41,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5133 states, 5132 states have (on average 4.7531176929072485) internal successors, (24393), 5132 states have internal predecessors, (24393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:41,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5133 states to 5133 states and 24393 transitions. [2021-05-22 02:06:41,059 INFO L78 Accepts]: Start accepts. Automaton has 5133 states and 24393 transitions. Word has length 29 [2021-05-22 02:06:41,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:41,059 INFO L482 AbstractCegarLoop]: Abstraction has 5133 states and 24393 transitions. [2021-05-22 02:06:41,059 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:41,059 INFO L276 IsEmpty]: Start isEmpty. Operand 5133 states and 24393 transitions. [2021-05-22 02:06:41,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:41,069 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:41,069 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:41,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1110 [2021-05-22 02:06:41,069 INFO L430 AbstractCegarLoop]: === Iteration 1112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:41,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:41,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1065294585, now seen corresponding path program 1107 times [2021-05-22 02:06:41,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:41,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092740668] [2021-05-22 02:06:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:41,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:41,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:41,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092740668] [2021-05-22 02:06:41,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092740668] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:41,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:41,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:41,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2666895] [2021-05-22 02:06:41,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:41,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:41,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:41,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:41,178 INFO L87 Difference]: Start difference. First operand 5133 states and 24393 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:41,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:41,289 INFO L93 Difference]: Finished difference Result 10799 states and 48270 transitions. [2021-05-22 02:06:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:41,289 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:41,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:41,317 INFO L225 Difference]: With dead ends: 10799 [2021-05-22 02:06:41,317 INFO L226 Difference]: Without dead ends: 10384 [2021-05-22 02:06:41,317 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:41,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10384 states. [2021-05-22 02:06:41,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10384 to 5165. [2021-05-22 02:06:41,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.745352439969016) internal successors, (24505), 5164 states have internal predecessors, (24505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:41,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24505 transitions. [2021-05-22 02:06:41,559 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24505 transitions. Word has length 29 [2021-05-22 02:06:41,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:41,559 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24505 transitions. [2021-05-22 02:06:41,559 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:41,559 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24505 transitions. [2021-05-22 02:06:41,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:41,568 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:41,568 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:41,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1111 [2021-05-22 02:06:41,568 INFO L430 AbstractCegarLoop]: === Iteration 1113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:41,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:41,568 INFO L82 PathProgramCache]: Analyzing trace with hash 827551717, now seen corresponding path program 1108 times [2021-05-22 02:06:41,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:41,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535872661] [2021-05-22 02:06:41,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:41,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:41,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:41,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535872661] [2021-05-22 02:06:41,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535872661] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:41,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:41,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:41,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611514206] [2021-05-22 02:06:41,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:41,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:41,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:41,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:41,676 INFO L87 Difference]: Start difference. First operand 5165 states and 24505 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:41,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:41,781 INFO L93 Difference]: Finished difference Result 10799 states and 48238 transitions. [2021-05-22 02:06:41,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:41,782 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:41,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:41,809 INFO L225 Difference]: With dead ends: 10799 [2021-05-22 02:06:41,809 INFO L226 Difference]: Without dead ends: 10352 [2021-05-22 02:06:41,809 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:41,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10352 states. [2021-05-22 02:06:42,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10352 to 5133. [2021-05-22 02:06:42,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5133 states, 5132 states have (on average 4.75) internal successors, (24377), 5132 states have internal predecessors, (24377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:42,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5133 states to 5133 states and 24377 transitions. [2021-05-22 02:06:42,047 INFO L78 Accepts]: Start accepts. Automaton has 5133 states and 24377 transitions. Word has length 29 [2021-05-22 02:06:42,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:42,047 INFO L482 AbstractCegarLoop]: Abstraction has 5133 states and 24377 transitions. [2021-05-22 02:06:42,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:42,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5133 states and 24377 transitions. [2021-05-22 02:06:42,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:42,055 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:42,055 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:42,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1112 [2021-05-22 02:06:42,056 INFO L430 AbstractCegarLoop]: === Iteration 1114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:42,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:42,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1549155267, now seen corresponding path program 1109 times [2021-05-22 02:06:42,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:42,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949571102] [2021-05-22 02:06:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:42,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:42,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949571102] [2021-05-22 02:06:42,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949571102] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:42,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:42,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:42,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518778499] [2021-05-22 02:06:42,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:42,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:42,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:42,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:42,171 INFO L87 Difference]: Start difference. First operand 5133 states and 24377 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:42,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:42,264 INFO L93 Difference]: Finished difference Result 11101 states and 49532 transitions. [2021-05-22 02:06:42,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:42,264 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:42,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:42,291 INFO L225 Difference]: With dead ends: 11101 [2021-05-22 02:06:42,292 INFO L226 Difference]: Without dead ends: 10559 [2021-05-22 02:06:42,292 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:42,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10559 states. [2021-05-22 02:06:42,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10559 to 5213. [2021-05-22 02:06:42,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 5212 states have (on average 4.732348426707598) internal successors, (24665), 5212 states have internal predecessors, (24665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:42,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 24665 transitions. [2021-05-22 02:06:42,538 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 24665 transitions. Word has length 29 [2021-05-22 02:06:42,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:42,538 INFO L482 AbstractCegarLoop]: Abstraction has 5213 states and 24665 transitions. [2021-05-22 02:06:42,538 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:42,538 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 24665 transitions. [2021-05-22 02:06:42,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:42,547 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:42,547 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:42,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1113 [2021-05-22 02:06:42,547 INFO L430 AbstractCegarLoop]: === Iteration 1115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:42,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:42,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1342347301, now seen corresponding path program 1110 times [2021-05-22 02:06:42,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:42,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021426588] [2021-05-22 02:06:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:42,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:42,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:42,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021426588] [2021-05-22 02:06:42,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021426588] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:42,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:42,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:42,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039117746] [2021-05-22 02:06:42,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:42,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:42,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:42,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:42,664 INFO L87 Difference]: Start difference. First operand 5213 states and 24665 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:42,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:42,756 INFO L93 Difference]: Finished difference Result 10974 states and 48925 transitions. [2021-05-22 02:06:42,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:42,756 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:42,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:42,783 INFO L225 Difference]: With dead ends: 10974 [2021-05-22 02:06:42,783 INFO L226 Difference]: Without dead ends: 10447 [2021-05-22 02:06:42,783 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:42,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10447 states. [2021-05-22 02:06:42,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10447 to 5101. [2021-05-22 02:06:43,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5101 states, 5100 states have (on average 4.754705882352941) internal successors, (24249), 5100 states have internal predecessors, (24249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:43,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 24249 transitions. [2021-05-22 02:06:43,018 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 24249 transitions. Word has length 29 [2021-05-22 02:06:43,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:43,018 INFO L482 AbstractCegarLoop]: Abstraction has 5101 states and 24249 transitions. [2021-05-22 02:06:43,018 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:43,018 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 24249 transitions. [2021-05-22 02:06:43,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:43,026 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:43,026 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:43,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1114 [2021-05-22 02:06:43,027 INFO L430 AbstractCegarLoop]: === Iteration 1116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:43,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:43,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1686779415, now seen corresponding path program 1111 times [2021-05-22 02:06:43,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:43,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125693779] [2021-05-22 02:06:43,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:43,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:43,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:43,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125693779] [2021-05-22 02:06:43,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125693779] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:43,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:43,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:43,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436829482] [2021-05-22 02:06:43,143 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:43,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:43,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:43,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:43,143 INFO L87 Difference]: Start difference. First operand 5101 states and 24249 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:43,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:43,251 INFO L93 Difference]: Finished difference Result 10990 states and 49141 transitions. [2021-05-22 02:06:43,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:43,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:43,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:43,278 INFO L225 Difference]: With dead ends: 10990 [2021-05-22 02:06:43,278 INFO L226 Difference]: Without dead ends: 10575 [2021-05-22 02:06:43,278 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:43,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10575 states. [2021-05-22 02:06:43,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10575 to 5221. [2021-05-22 02:06:43,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5221 states, 5220 states have (on average 4.745785440613027) internal successors, (24773), 5220 states have internal predecessors, (24773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:43,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 24773 transitions. [2021-05-22 02:06:43,521 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 24773 transitions. Word has length 29 [2021-05-22 02:06:43,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:43,521 INFO L482 AbstractCegarLoop]: Abstraction has 5221 states and 24773 transitions. [2021-05-22 02:06:43,521 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:43,522 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 24773 transitions. [2021-05-22 02:06:43,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:43,530 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:43,530 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:43,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1115 [2021-05-22 02:06:43,530 INFO L430 AbstractCegarLoop]: === Iteration 1117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:43,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:43,531 INFO L82 PathProgramCache]: Analyzing trace with hash 68041193, now seen corresponding path program 1112 times [2021-05-22 02:06:43,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:43,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169256891] [2021-05-22 02:06:43,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:43,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:43,648 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:43,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169256891] [2021-05-22 02:06:43,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169256891] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:43,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:43,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:43,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330818504] [2021-05-22 02:06:43,648 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:43,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:43,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:43,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:43,648 INFO L87 Difference]: Start difference. First operand 5221 states and 24773 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:43,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:43,745 INFO L93 Difference]: Finished difference Result 11117 states and 49620 transitions. [2021-05-22 02:06:43,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:43,745 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:43,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:43,771 INFO L225 Difference]: With dead ends: 11117 [2021-05-22 02:06:43,772 INFO L226 Difference]: Without dead ends: 10495 [2021-05-22 02:06:43,772 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:43,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10495 states. [2021-05-22 02:06:43,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10495 to 5141. [2021-05-22 02:06:43,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5140 states have (on average 4.749610894941634) internal successors, (24413), 5140 states have internal predecessors, (24413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:44,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 24413 transitions. [2021-05-22 02:06:44,006 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 24413 transitions. Word has length 29 [2021-05-22 02:06:44,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:44,007 INFO L482 AbstractCegarLoop]: Abstraction has 5141 states and 24413 transitions. [2021-05-22 02:06:44,007 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:44,007 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 24413 transitions. [2021-05-22 02:06:44,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:44,015 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:44,015 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:44,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1116 [2021-05-22 02:06:44,015 INFO L430 AbstractCegarLoop]: === Iteration 1118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:44,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:44,015 INFO L82 PathProgramCache]: Analyzing trace with hash 2009460009, now seen corresponding path program 1113 times [2021-05-22 02:06:44,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:44,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867391693] [2021-05-22 02:06:44,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:44,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:44,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:44,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867391693] [2021-05-22 02:06:44,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867391693] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:44,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:44,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:44,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411536921] [2021-05-22 02:06:44,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:44,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:44,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:44,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:44,124 INFO L87 Difference]: Start difference. First operand 5141 states and 24413 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:44,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:44,246 INFO L93 Difference]: Finished difference Result 10783 states and 48254 transitions. [2021-05-22 02:06:44,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:44,247 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:44,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:44,273 INFO L225 Difference]: With dead ends: 10783 [2021-05-22 02:06:44,273 INFO L226 Difference]: Without dead ends: 10368 [2021-05-22 02:06:44,273 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:44,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10368 states. [2021-05-22 02:06:44,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10368 to 5189. [2021-05-22 02:06:44,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 4.739591364687741) internal successors, (24589), 5188 states have internal predecessors, (24589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:44,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 24589 transitions. [2021-05-22 02:06:44,517 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 24589 transitions. Word has length 29 [2021-05-22 02:06:44,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:44,517 INFO L482 AbstractCegarLoop]: Abstraction has 5189 states and 24589 transitions. [2021-05-22 02:06:44,517 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:44,517 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 24589 transitions. [2021-05-22 02:06:44,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:44,528 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:44,528 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:44,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1117 [2021-05-22 02:06:44,528 INFO L430 AbstractCegarLoop]: === Iteration 1119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:44,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:44,528 INFO L82 PathProgramCache]: Analyzing trace with hash 263435211, now seen corresponding path program 1114 times [2021-05-22 02:06:44,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:44,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233382465] [2021-05-22 02:06:44,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:44,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:44,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233382465] [2021-05-22 02:06:44,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233382465] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:44,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:44,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:44,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463256550] [2021-05-22 02:06:44,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:44,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:44,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:44,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:44,637 INFO L87 Difference]: Start difference. First operand 5189 states and 24589 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:44,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:44,752 INFO L93 Difference]: Finished difference Result 10511 states and 47245 transitions. [2021-05-22 02:06:44,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:44,752 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:44,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:44,778 INFO L225 Difference]: With dead ends: 10511 [2021-05-22 02:06:44,778 INFO L226 Difference]: Without dead ends: 10000 [2021-05-22 02:06:44,778 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:44,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10000 states. [2021-05-22 02:06:44,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10000 to 5141. [2021-05-22 02:06:44,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5140 states have (on average 4.744941634241245) internal successors, (24389), 5140 states have internal predecessors, (24389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 24389 transitions. [2021-05-22 02:06:45,013 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 24389 transitions. Word has length 29 [2021-05-22 02:06:45,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:45,013 INFO L482 AbstractCegarLoop]: Abstraction has 5141 states and 24389 transitions. [2021-05-22 02:06:45,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:45,013 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 24389 transitions. [2021-05-22 02:06:45,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:45,021 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:45,021 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:45,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1118 [2021-05-22 02:06:45,022 INFO L430 AbstractCegarLoop]: === Iteration 1120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:45,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:45,022 INFO L82 PathProgramCache]: Analyzing trace with hash -342133813, now seen corresponding path program 1115 times [2021-05-22 02:06:45,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:45,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742023531] [2021-05-22 02:06:45,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:45,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:45,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742023531] [2021-05-22 02:06:45,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742023531] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:45,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:45,140 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:45,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010823498] [2021-05-22 02:06:45,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:45,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:45,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:45,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:45,140 INFO L87 Difference]: Start difference. First operand 5141 states and 24389 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:45,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:45,231 INFO L93 Difference]: Finished difference Result 10966 states and 49025 transitions. [2021-05-22 02:06:45,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:45,231 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:45,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:45,258 INFO L225 Difference]: With dead ends: 10966 [2021-05-22 02:06:45,258 INFO L226 Difference]: Without dead ends: 10424 [2021-05-22 02:06:45,258 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:45,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10424 states. [2021-05-22 02:06:45,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10424 to 5245. [2021-05-22 02:06:45,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 5244 states have (on average 4.724828375286041) internal successors, (24777), 5244 states have internal predecessors, (24777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:45,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 24777 transitions. [2021-05-22 02:06:45,498 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 24777 transitions. Word has length 29 [2021-05-22 02:06:45,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:45,498 INFO L482 AbstractCegarLoop]: Abstraction has 5245 states and 24777 transitions. [2021-05-22 02:06:45,498 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:45,498 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 24777 transitions. [2021-05-22 02:06:45,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:45,508 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:45,508 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:45,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1119 [2021-05-22 02:06:45,508 INFO L430 AbstractCegarLoop]: === Iteration 1121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:45,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:45,508 INFO L82 PathProgramCache]: Analyzing trace with hash 219298985, now seen corresponding path program 1116 times [2021-05-22 02:06:45,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:45,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092826431] [2021-05-22 02:06:45,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:45,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:45,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092826431] [2021-05-22 02:06:45,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092826431] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:45,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:45,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:45,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73105283] [2021-05-22 02:06:45,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:45,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:45,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:45,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:45,626 INFO L87 Difference]: Start difference. First operand 5245 states and 24777 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:45,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:45,734 INFO L93 Difference]: Finished difference Result 10567 states and 47433 transitions. [2021-05-22 02:06:45,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:45,735 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:45,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:45,762 INFO L225 Difference]: With dead ends: 10567 [2021-05-22 02:06:45,762 INFO L226 Difference]: Without dead ends: 9960 [2021-05-22 02:06:45,762 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:45,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9960 states. [2021-05-22 02:06:45,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9960 to 5101. [2021-05-22 02:06:45,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5101 states, 5100 states have (on average 4.751568627450981) internal successors, (24233), 5100 states have internal predecessors, (24233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:45,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 24233 transitions. [2021-05-22 02:06:45,995 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 24233 transitions. Word has length 29 [2021-05-22 02:06:45,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:45,995 INFO L482 AbstractCegarLoop]: Abstraction has 5101 states and 24233 transitions. [2021-05-22 02:06:45,996 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:45,996 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 24233 transitions. [2021-05-22 02:06:46,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:46,004 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:46,004 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:46,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1120 [2021-05-22 02:06:46,005 INFO L430 AbstractCegarLoop]: === Iteration 1122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:46,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:46,005 INFO L82 PathProgramCache]: Analyzing trace with hash -816566073, now seen corresponding path program 1117 times [2021-05-22 02:06:46,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:46,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45181411] [2021-05-22 02:06:46,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:46,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:46,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45181411] [2021-05-22 02:06:46,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45181411] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:46,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:46,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:46,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322622864] [2021-05-22 02:06:46,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:46,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:46,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:46,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:46,107 INFO L87 Difference]: Start difference. First operand 5101 states and 24233 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:46,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:46,215 INFO L93 Difference]: Finished difference Result 10608 states and 47455 transitions. [2021-05-22 02:06:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:46,215 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:46,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:46,242 INFO L225 Difference]: With dead ends: 10608 [2021-05-22 02:06:46,242 INFO L226 Difference]: Without dead ends: 10193 [2021-05-22 02:06:46,242 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:46,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10193 states. [2021-05-22 02:06:46,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10193 to 5149. [2021-05-22 02:06:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5149 states, 5148 states have (on average 4.744560994560994) internal successors, (24425), 5148 states have internal predecessors, (24425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:46,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 24425 transitions. [2021-05-22 02:06:46,483 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 24425 transitions. Word has length 29 [2021-05-22 02:06:46,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:46,483 INFO L482 AbstractCegarLoop]: Abstraction has 5149 states and 24425 transitions. [2021-05-22 02:06:46,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:46,483 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 24425 transitions. [2021-05-22 02:06:46,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:46,492 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:46,492 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:46,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1121 [2021-05-22 02:06:46,492 INFO L430 AbstractCegarLoop]: === Iteration 1123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:46,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:46,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1076280229, now seen corresponding path program 1118 times [2021-05-22 02:06:46,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:46,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13709520] [2021-05-22 02:06:46,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:46,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:46,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:46,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13709520] [2021-05-22 02:06:46,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13709520] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:46,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:46,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:46,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563930795] [2021-05-22 02:06:46,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:46,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:46,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:46,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:46,596 INFO L87 Difference]: Start difference. First operand 5149 states and 24425 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:46,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:46,698 INFO L93 Difference]: Finished difference Result 10608 states and 47423 transitions. [2021-05-22 02:06:46,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:46,698 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:46,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:46,725 INFO L225 Difference]: With dead ends: 10608 [2021-05-22 02:06:46,725 INFO L226 Difference]: Without dead ends: 10161 [2021-05-22 02:06:46,725 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 109.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:46,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10161 states. [2021-05-22 02:06:46,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10161 to 5117. [2021-05-22 02:06:46,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.749218139171227) internal successors, (24297), 5116 states have internal predecessors, (24297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:46,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24297 transitions. [2021-05-22 02:06:46,963 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24297 transitions. Word has length 29 [2021-05-22 02:06:46,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:46,963 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24297 transitions. [2021-05-22 02:06:46,963 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:46,963 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24297 transitions. [2021-05-22 02:06:46,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:46,972 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:46,972 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:46,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1122 [2021-05-22 02:06:46,972 INFO L430 AbstractCegarLoop]: === Iteration 1124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:46,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:46,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1611383849, now seen corresponding path program 1119 times [2021-05-22 02:06:46,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:46,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620878061] [2021-05-22 02:06:46,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:47,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:47,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:47,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620878061] [2021-05-22 02:06:47,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620878061] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:47,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:47,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:47,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999894690] [2021-05-22 02:06:47,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:47,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:47,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:47,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:47,075 INFO L87 Difference]: Start difference. First operand 5117 states and 24297 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:47,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:47,185 INFO L93 Difference]: Finished difference Result 10576 states and 47343 transitions. [2021-05-22 02:06:47,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:47,185 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:47,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:47,213 INFO L225 Difference]: With dead ends: 10576 [2021-05-22 02:06:47,213 INFO L226 Difference]: Without dead ends: 10161 [2021-05-22 02:06:47,213 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:47,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10161 states. [2021-05-22 02:06:47,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10161 to 5165. [2021-05-22 02:06:47,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.739155693261038) internal successors, (24473), 5164 states have internal predecessors, (24473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:47,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24473 transitions. [2021-05-22 02:06:47,448 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24473 transitions. Word has length 29 [2021-05-22 02:06:47,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:47,448 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24473 transitions. [2021-05-22 02:06:47,448 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:47,448 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24473 transitions. [2021-05-22 02:06:47,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:47,456 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:47,456 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:47,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1123 [2021-05-22 02:06:47,457 INFO L430 AbstractCegarLoop]: === Iteration 1125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:47,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:47,457 INFO L82 PathProgramCache]: Analyzing trace with hash 140322665, now seen corresponding path program 1120 times [2021-05-22 02:06:47,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:47,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226814553] [2021-05-22 02:06:47,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:47,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:47,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226814553] [2021-05-22 02:06:47,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226814553] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:47,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:47,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:47,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224989414] [2021-05-22 02:06:47,561 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:47,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:47,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:47,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:47,562 INFO L87 Difference]: Start difference. First operand 5165 states and 24473 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:47,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:47,677 INFO L93 Difference]: Finished difference Result 10304 states and 46334 transitions. [2021-05-22 02:06:47,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:47,678 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:47,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:47,704 INFO L225 Difference]: With dead ends: 10304 [2021-05-22 02:06:47,704 INFO L226 Difference]: Without dead ends: 9793 [2021-05-22 02:06:47,704 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:47,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9793 states. [2021-05-22 02:06:47,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9793 to 5117. [2021-05-22 02:06:47,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.746090695856138) internal successors, (24281), 5116 states have internal predecessors, (24281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:47,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24281 transitions. [2021-05-22 02:06:47,936 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24281 transitions. Word has length 29 [2021-05-22 02:06:47,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:47,936 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24281 transitions. [2021-05-22 02:06:47,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:47,936 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24281 transitions. [2021-05-22 02:06:47,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:47,945 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:47,945 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:47,945 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1124 [2021-05-22 02:06:47,945 INFO L430 AbstractCegarLoop]: === Iteration 1126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:47,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:47,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1315870757, now seen corresponding path program 1121 times [2021-05-22 02:06:47,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:47,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119385548] [2021-05-22 02:06:47,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:48,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:48,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:48,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119385548] [2021-05-22 02:06:48,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119385548] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:48,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:48,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:48,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264838141] [2021-05-22 02:06:48,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:48,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:48,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:48,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:48,050 INFO L87 Difference]: Start difference. First operand 5117 states and 24281 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:48,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:48,146 INFO L93 Difference]: Finished difference Result 10576 states and 47327 transitions. [2021-05-22 02:06:48,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:48,146 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:48,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:48,173 INFO L225 Difference]: With dead ends: 10576 [2021-05-22 02:06:48,173 INFO L226 Difference]: Without dead ends: 10161 [2021-05-22 02:06:48,173 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 110.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:48,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10161 states. [2021-05-22 02:06:48,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10161 to 5165. [2021-05-22 02:06:48,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.736057319907049) internal successors, (24457), 5164 states have internal predecessors, (24457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:48,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24457 transitions. [2021-05-22 02:06:48,420 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24457 transitions. Word has length 29 [2021-05-22 02:06:48,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:48,420 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24457 transitions. [2021-05-22 02:06:48,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:48,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24457 transitions. [2021-05-22 02:06:48,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:48,429 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:48,429 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:48,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1125 [2021-05-22 02:06:48,429 INFO L430 AbstractCegarLoop]: === Iteration 1127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:48,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:48,429 INFO L82 PathProgramCache]: Analyzing trace with hash -178807801, now seen corresponding path program 1122 times [2021-05-22 02:06:48,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:48,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125077687] [2021-05-22 02:06:48,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:48,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:48,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:48,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125077687] [2021-05-22 02:06:48,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125077687] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:48,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:48,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:48,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895798495] [2021-05-22 02:06:48,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:48,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:48,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:48,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:48,533 INFO L87 Difference]: Start difference. First operand 5165 states and 24457 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:48,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:48,643 INFO L93 Difference]: Finished difference Result 10304 states and 46318 transitions. [2021-05-22 02:06:48,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:48,643 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:48,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:48,669 INFO L225 Difference]: With dead ends: 10304 [2021-05-22 02:06:48,669 INFO L226 Difference]: Without dead ends: 9777 [2021-05-22 02:06:48,669 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:48,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9777 states. [2021-05-22 02:06:48,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9777 to 5101. [2021-05-22 02:06:48,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5101 states, 5100 states have (on average 4.75) internal successors, (24225), 5100 states have internal predecessors, (24225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:48,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5101 states to 5101 states and 24225 transitions. [2021-05-22 02:06:48,903 INFO L78 Accepts]: Start accepts. Automaton has 5101 states and 24225 transitions. Word has length 29 [2021-05-22 02:06:48,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:48,903 INFO L482 AbstractCegarLoop]: Abstraction has 5101 states and 24225 transitions. [2021-05-22 02:06:48,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:48,903 INFO L276 IsEmpty]: Start isEmpty. Operand 5101 states and 24225 transitions. [2021-05-22 02:06:48,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:48,912 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:48,912 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:48,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1126 [2021-05-22 02:06:48,912 INFO L430 AbstractCegarLoop]: === Iteration 1128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:48,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:48,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1857590403, now seen corresponding path program 1123 times [2021-05-22 02:06:48,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:48,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683765728] [2021-05-22 02:06:48,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:49,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:49,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:49,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683765728] [2021-05-22 02:06:49,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683765728] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:49,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:49,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:49,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087009021] [2021-05-22 02:06:49,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:49,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:49,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:49,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:49,031 INFO L87 Difference]: Start difference. First operand 5101 states and 24225 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:49,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:49,130 INFO L93 Difference]: Finished difference Result 11117 states and 49644 transitions. [2021-05-22 02:06:49,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:49,131 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:49,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:49,159 INFO L225 Difference]: With dead ends: 11117 [2021-05-22 02:06:49,159 INFO L226 Difference]: Without dead ends: 10575 [2021-05-22 02:06:49,159 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:49,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10575 states. [2021-05-22 02:06:49,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10575 to 5221. [2021-05-22 02:06:49,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5221 states, 5220 states have (on average 4.735057471264367) internal successors, (24717), 5220 states have internal predecessors, (24717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:49,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 24717 transitions. [2021-05-22 02:06:49,402 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 24717 transitions. Word has length 29 [2021-05-22 02:06:49,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:49,402 INFO L482 AbstractCegarLoop]: Abstraction has 5221 states and 24717 transitions. [2021-05-22 02:06:49,402 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:49,402 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 24717 transitions. [2021-05-22 02:06:49,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:49,411 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:49,411 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:49,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1127 [2021-05-22 02:06:49,411 INFO L430 AbstractCegarLoop]: === Iteration 1129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:49,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:49,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1650782437, now seen corresponding path program 1124 times [2021-05-22 02:06:49,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:49,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301685250] [2021-05-22 02:06:49,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:49,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:49,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:49,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301685250] [2021-05-22 02:06:49,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301685250] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:49,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:49,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:49,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200697719] [2021-05-22 02:06:49,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:49,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:49,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:49,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:49,531 INFO L87 Difference]: Start difference. First operand 5221 states and 24717 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:49,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:49,636 INFO L93 Difference]: Finished difference Result 10990 states and 49037 transitions. [2021-05-22 02:06:49,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:49,636 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:49,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:49,663 INFO L225 Difference]: With dead ends: 10990 [2021-05-22 02:06:49,664 INFO L226 Difference]: Without dead ends: 10495 [2021-05-22 02:06:49,664 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:49,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10495 states. [2021-05-22 02:06:49,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10495 to 5141. [2021-05-22 02:06:49,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5140 states have (on average 4.744941634241245) internal successors, (24389), 5140 states have internal predecessors, (24389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:49,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 24389 transitions. [2021-05-22 02:06:49,902 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 24389 transitions. Word has length 29 [2021-05-22 02:06:49,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:49,902 INFO L482 AbstractCegarLoop]: Abstraction has 5141 states and 24389 transitions. [2021-05-22 02:06:49,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:49,902 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 24389 transitions. [2021-05-22 02:06:49,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:49,911 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:49,911 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:49,911 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1128 [2021-05-22 02:06:49,911 INFO L430 AbstractCegarLoop]: === Iteration 1130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:49,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:49,911 INFO L82 PathProgramCache]: Analyzing trace with hash -9426971, now seen corresponding path program 1125 times [2021-05-22 02:06:49,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:49,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872025853] [2021-05-22 02:06:49,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:50,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:50,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872025853] [2021-05-22 02:06:50,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872025853] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:50,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:50,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:50,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920557188] [2021-05-22 02:06:50,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:50,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:50,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:50,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:50,033 INFO L87 Difference]: Start difference. First operand 5141 states and 24389 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:50,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:50,144 INFO L93 Difference]: Finished difference Result 10966 states and 49025 transitions. [2021-05-22 02:06:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:50,145 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:50,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:50,172 INFO L225 Difference]: With dead ends: 10966 [2021-05-22 02:06:50,172 INFO L226 Difference]: Without dead ends: 10424 [2021-05-22 02:06:50,172 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:50,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10424 states. [2021-05-22 02:06:50,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10424 to 5245. [2021-05-22 02:06:50,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 5244 states have (on average 4.724828375286041) internal successors, (24777), 5244 states have internal predecessors, (24777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:50,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 24777 transitions. [2021-05-22 02:06:50,411 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 24777 transitions. Word has length 29 [2021-05-22 02:06:50,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:50,411 INFO L482 AbstractCegarLoop]: Abstraction has 5245 states and 24777 transitions. [2021-05-22 02:06:50,411 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:50,411 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 24777 transitions. [2021-05-22 02:06:50,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:50,420 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:50,420 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:50,420 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1129 [2021-05-22 02:06:50,420 INFO L430 AbstractCegarLoop]: === Iteration 1131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:50,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:50,421 INFO L82 PathProgramCache]: Analyzing trace with hash 490084197, now seen corresponding path program 1126 times [2021-05-22 02:06:50,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:50,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755870320] [2021-05-22 02:06:50,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:50,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:50,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755870320] [2021-05-22 02:06:50,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755870320] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:50,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:50,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:50,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057260790] [2021-05-22 02:06:50,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:50,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:50,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:50,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:50,540 INFO L87 Difference]: Start difference. First operand 5245 states and 24777 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:50,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:50,666 INFO L93 Difference]: Finished difference Result 10567 states and 47433 transitions. [2021-05-22 02:06:50,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:50,666 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:50,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:50,692 INFO L225 Difference]: With dead ends: 10567 [2021-05-22 02:06:50,692 INFO L226 Difference]: Without dead ends: 10000 [2021-05-22 02:06:50,692 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:50,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10000 states. [2021-05-22 02:06:50,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10000 to 5141. [2021-05-22 02:06:50,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5140 states have (on average 4.73715953307393) internal successors, (24349), 5140 states have internal predecessors, (24349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:50,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 24349 transitions. [2021-05-22 02:06:50,932 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 24349 transitions. Word has length 29 [2021-05-22 02:06:50,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:50,933 INFO L482 AbstractCegarLoop]: Abstraction has 5141 states and 24349 transitions. [2021-05-22 02:06:50,933 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:50,933 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 24349 transitions. [2021-05-22 02:06:50,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:50,942 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:50,942 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:50,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1130 [2021-05-22 02:06:50,942 INFO L430 AbstractCegarLoop]: === Iteration 1132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:50,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:50,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1602350265, now seen corresponding path program 1127 times [2021-05-22 02:06:50,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:50,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676781435] [2021-05-22 02:06:50,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:51,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:51,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:51,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676781435] [2021-05-22 02:06:51,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676781435] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:51,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:51,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:51,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278235427] [2021-05-22 02:06:51,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:51,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:51,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:51,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:51,054 INFO L87 Difference]: Start difference. First operand 5141 states and 24349 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:51,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:51,187 INFO L93 Difference]: Finished difference Result 10783 states and 48190 transitions. [2021-05-22 02:06:51,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:51,187 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:51,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:51,215 INFO L225 Difference]: With dead ends: 10783 [2021-05-22 02:06:51,215 INFO L226 Difference]: Without dead ends: 10368 [2021-05-22 02:06:51,215 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:51,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10368 states. [2021-05-22 02:06:51,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10368 to 5189. [2021-05-22 02:06:51,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 4.727255204317657) internal successors, (24525), 5188 states have internal predecessors, (24525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:51,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 24525 transitions. [2021-05-22 02:06:51,447 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 24525 transitions. Word has length 29 [2021-05-22 02:06:51,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:51,447 INFO L482 AbstractCegarLoop]: Abstraction has 5189 states and 24525 transitions. [2021-05-22 02:06:51,447 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:51,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 24525 transitions. [2021-05-22 02:06:51,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:51,455 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:51,455 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:51,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1131 [2021-05-22 02:06:51,456 INFO L430 AbstractCegarLoop]: === Iteration 1133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:51,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:51,456 INFO L82 PathProgramCache]: Analyzing trace with hash -692745307, now seen corresponding path program 1128 times [2021-05-22 02:06:51,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:51,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925311812] [2021-05-22 02:06:51,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:51,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:51,563 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:51,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925311812] [2021-05-22 02:06:51,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925311812] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:51,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:51,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:51,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405007523] [2021-05-22 02:06:51,563 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:51,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:51,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:51,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:51,563 INFO L87 Difference]: Start difference. First operand 5189 states and 24525 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:51,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:51,667 INFO L93 Difference]: Finished difference Result 10511 states and 47181 transitions. [2021-05-22 02:06:51,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:51,668 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:51,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:51,693 INFO L225 Difference]: With dead ends: 10511 [2021-05-22 02:06:51,694 INFO L226 Difference]: Without dead ends: 9944 [2021-05-22 02:06:51,694 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:51,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9944 states. [2021-05-22 02:06:51,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9944 to 5085. [2021-05-22 02:06:51,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5085 states, 5084 states have (on average 4.753933910306845) internal successors, (24169), 5084 states have internal predecessors, (24169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:51,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5085 states to 5085 states and 24169 transitions. [2021-05-22 02:06:51,922 INFO L78 Accepts]: Start accepts. Automaton has 5085 states and 24169 transitions. Word has length 29 [2021-05-22 02:06:51,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:51,922 INFO L482 AbstractCegarLoop]: Abstraction has 5085 states and 24169 transitions. [2021-05-22 02:06:51,922 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:51,922 INFO L276 IsEmpty]: Start isEmpty. Operand 5085 states and 24169 transitions. [2021-05-22 02:06:51,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:51,930 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:51,930 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:51,930 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1132 [2021-05-22 02:06:51,930 INFO L430 AbstractCegarLoop]: === Iteration 1134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:51,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:51,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1484460743, now seen corresponding path program 1129 times [2021-05-22 02:06:51,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:51,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360761977] [2021-05-22 02:06:51,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:52,040 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:52,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360761977] [2021-05-22 02:06:52,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360761977] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:52,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:52,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:52,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132151680] [2021-05-22 02:06:52,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:52,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:52,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:52,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:52,041 INFO L87 Difference]: Start difference. First operand 5085 states and 24169 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:52,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:52,147 INFO L93 Difference]: Finished difference Result 11242 states and 50331 transitions. [2021-05-22 02:06:52,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:52,147 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:52,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:52,175 INFO L225 Difference]: With dead ends: 11242 [2021-05-22 02:06:52,175 INFO L226 Difference]: Without dead ends: 10827 [2021-05-22 02:06:52,175 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:52,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10827 states. [2021-05-22 02:06:52,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10827 to 5225. [2021-05-22 02:06:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 4.748277182235834) internal successors, (24805), 5224 states have internal predecessors, (24805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:52,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 24805 transitions. [2021-05-22 02:06:52,423 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 24805 transitions. Word has length 29 [2021-05-22 02:06:52,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:52,423 INFO L482 AbstractCegarLoop]: Abstraction has 5225 states and 24805 transitions. [2021-05-22 02:06:52,423 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:52,423 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 24805 transitions. [2021-05-22 02:06:52,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:52,432 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:52,432 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:52,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1133 [2021-05-22 02:06:52,433 INFO L430 AbstractCegarLoop]: === Iteration 1135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:52,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:52,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1055685945, now seen corresponding path program 1130 times [2021-05-22 02:06:52,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:52,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541506577] [2021-05-22 02:06:52,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:52,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:52,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:52,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541506577] [2021-05-22 02:06:52,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541506577] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:52,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:52,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:52,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244454418] [2021-05-22 02:06:52,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:52,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:52,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:52,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:52,546 INFO L87 Difference]: Start difference. First operand 5225 states and 24805 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:52,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:52,647 INFO L93 Difference]: Finished difference Result 11369 states and 50810 transitions. [2021-05-22 02:06:52,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:52,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:52,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:52,675 INFO L225 Difference]: With dead ends: 11369 [2021-05-22 02:06:52,675 INFO L226 Difference]: Without dead ends: 10747 [2021-05-22 02:06:52,675 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:52,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10747 states. [2021-05-22 02:06:52,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10747 to 5145. [2021-05-22 02:06:52,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.752138413685848) internal successors, (24445), 5144 states have internal predecessors, (24445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:52,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24445 transitions. [2021-05-22 02:06:52,916 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24445 transitions. Word has length 29 [2021-05-22 02:06:52,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:52,916 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24445 transitions. [2021-05-22 02:06:52,916 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:52,916 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24445 transitions. [2021-05-22 02:06:52,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:52,925 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:52,925 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:52,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1134 [2021-05-22 02:06:52,925 INFO L430 AbstractCegarLoop]: === Iteration 1136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:52,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:52,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1152316935, now seen corresponding path program 1131 times [2021-05-22 02:06:52,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:52,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134576855] [2021-05-22 02:06:52,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:53,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:53,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134576855] [2021-05-22 02:06:53,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134576855] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:53,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:53,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:53,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869426186] [2021-05-22 02:06:53,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:53,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:53,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:53,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:53,042 INFO L87 Difference]: Start difference. First operand 5145 states and 24445 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:53,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:53,148 INFO L93 Difference]: Finished difference Result 11143 states and 49884 transitions. [2021-05-22 02:06:53,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:53,148 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:53,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:53,175 INFO L225 Difference]: With dead ends: 11143 [2021-05-22 02:06:53,176 INFO L226 Difference]: Without dead ends: 10728 [2021-05-22 02:06:53,176 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:53,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10728 states. [2021-05-22 02:06:53,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10728 to 5193. [2021-05-22 02:06:53,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5193 states, 5192 states have (on average 4.742103235747304) internal successors, (24621), 5192 states have internal predecessors, (24621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:53,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 24621 transitions. [2021-05-22 02:06:53,414 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 24621 transitions. Word has length 29 [2021-05-22 02:06:53,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:53,414 INFO L482 AbstractCegarLoop]: Abstraction has 5193 states and 24621 transitions. [2021-05-22 02:06:53,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:53,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 24621 transitions. [2021-05-22 02:06:53,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:53,422 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:53,422 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:53,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1135 [2021-05-22 02:06:53,422 INFO L430 AbstractCegarLoop]: === Iteration 1137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:53,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:53,423 INFO L82 PathProgramCache]: Analyzing trace with hash 637636009, now seen corresponding path program 1132 times [2021-05-22 02:06:53,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:53,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519526200] [2021-05-22 02:06:53,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:53,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:53,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519526200] [2021-05-22 02:06:53,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519526200] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:53,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:53,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:53,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50964614] [2021-05-22 02:06:53,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:53,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:53,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:53,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:53,537 INFO L87 Difference]: Start difference. First operand 5193 states and 24621 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:53,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:53,643 INFO L93 Difference]: Finished difference Result 11203 states and 50100 transitions. [2021-05-22 02:06:53,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:53,643 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:53,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:53,670 INFO L225 Difference]: With dead ends: 11203 [2021-05-22 02:06:53,670 INFO L226 Difference]: Without dead ends: 10680 [2021-05-22 02:06:53,670 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:53,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10680 states. [2021-05-22 02:06:53,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10680 to 5145. [2021-05-22 02:06:53,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.747472783825817) internal successors, (24421), 5144 states have internal predecessors, (24421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:53,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24421 transitions. [2021-05-22 02:06:53,912 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24421 transitions. Word has length 29 [2021-05-22 02:06:53,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:53,912 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24421 transitions. [2021-05-22 02:06:53,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:53,912 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24421 transitions. [2021-05-22 02:06:53,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:53,921 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:53,921 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:53,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1136 [2021-05-22 02:06:53,921 INFO L430 AbstractCegarLoop]: === Iteration 1138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:53,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:53,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1376464297, now seen corresponding path program 1133 times [2021-05-22 02:06:53,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:53,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602715898] [2021-05-22 02:06:53,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:54,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:54,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:54,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602715898] [2021-05-22 02:06:54,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602715898] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:54,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:54,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:54,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090049770] [2021-05-22 02:06:54,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:54,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:54,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:54,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:54,030 INFO L87 Difference]: Start difference. First operand 5145 states and 24421 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:54,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:54,124 INFO L93 Difference]: Finished difference Result 11459 states and 51205 transitions. [2021-05-22 02:06:54,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:54,124 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:54,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:54,153 INFO L225 Difference]: With dead ends: 11459 [2021-05-22 02:06:54,153 INFO L226 Difference]: Without dead ends: 10917 [2021-05-22 02:06:54,153 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:54,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10917 states. [2021-05-22 02:06:54,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10917 to 5255. [2021-05-22 02:06:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5255 states, 5254 states have (on average 4.72516178149981) internal successors, (24826), 5254 states have internal predecessors, (24826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:54,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 24826 transitions. [2021-05-22 02:06:54,401 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 24826 transitions. Word has length 29 [2021-05-22 02:06:54,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:54,401 INFO L482 AbstractCegarLoop]: Abstraction has 5255 states and 24826 transitions. [2021-05-22 02:06:54,401 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:54,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 24826 transitions. [2021-05-22 02:06:54,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:54,410 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:54,410 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:54,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1137 [2021-05-22 02:06:54,410 INFO L430 AbstractCegarLoop]: === Iteration 1139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:54,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:54,410 INFO L82 PathProgramCache]: Analyzing trace with hash 635512199, now seen corresponding path program 1134 times [2021-05-22 02:06:54,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:54,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116409031] [2021-05-22 02:06:54,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:54,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:54,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:54,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116409031] [2021-05-22 02:06:54,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116409031] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:54,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:54,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:54,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793899523] [2021-05-22 02:06:54,515 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:54,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:54,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:54,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:54,515 INFO L87 Difference]: Start difference. First operand 5255 states and 24826 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:54,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:54,627 INFO L93 Difference]: Finished difference Result 11392 states and 50832 transitions. [2021-05-22 02:06:54,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:54,627 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:54,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:54,656 INFO L225 Difference]: With dead ends: 11392 [2021-05-22 02:06:54,656 INFO L226 Difference]: Without dead ends: 10767 [2021-05-22 02:06:54,656 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:54,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10767 states. [2021-05-22 02:06:54,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10767 to 5105. [2021-05-22 02:06:54,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.753330721003135) internal successors, (24261), 5104 states have internal predecessors, (24261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24261 transitions. [2021-05-22 02:06:54,897 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24261 transitions. Word has length 29 [2021-05-22 02:06:54,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:54,897 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24261 transitions. [2021-05-22 02:06:54,897 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:54,897 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24261 transitions. [2021-05-22 02:06:54,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:54,906 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:54,906 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:54,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1138 [2021-05-22 02:06:54,906 INFO L430 AbstractCegarLoop]: === Iteration 1140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:54,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:54,906 INFO L82 PathProgramCache]: Analyzing trace with hash -661316183, now seen corresponding path program 1135 times [2021-05-22 02:06:54,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:54,906 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749371852] [2021-05-22 02:06:54,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:55,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:55,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:55,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749371852] [2021-05-22 02:06:55,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749371852] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:55,017 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:55,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:55,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099916760] [2021-05-22 02:06:55,017 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:55,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:55,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:55,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:55,017 INFO L87 Difference]: Start difference. First operand 5105 states and 24261 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:55,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:55,132 INFO L93 Difference]: Finished difference Result 11144 states and 49880 transitions. [2021-05-22 02:06:55,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:55,132 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:55,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:55,161 INFO L225 Difference]: With dead ends: 11144 [2021-05-22 02:06:55,161 INFO L226 Difference]: Without dead ends: 10729 [2021-05-22 02:06:55,161 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:55,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10729 states. [2021-05-22 02:06:55,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10729 to 5225. [2021-05-22 02:06:55,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 4.744448698315467) internal successors, (24785), 5224 states have internal predecessors, (24785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:55,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 24785 transitions. [2021-05-22 02:06:55,404 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 24785 transitions. Word has length 29 [2021-05-22 02:06:55,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:55,404 INFO L482 AbstractCegarLoop]: Abstraction has 5225 states and 24785 transitions. [2021-05-22 02:06:55,404 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:55,404 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 24785 transitions. [2021-05-22 02:06:55,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:55,413 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:55,413 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:55,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1139 [2021-05-22 02:06:55,413 INFO L430 AbstractCegarLoop]: === Iteration 1141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:55,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:55,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1093504425, now seen corresponding path program 1136 times [2021-05-22 02:06:55,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:55,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048009349] [2021-05-22 02:06:55,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:55,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:55,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:55,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048009349] [2021-05-22 02:06:55,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048009349] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:55,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:55,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:55,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449244532] [2021-05-22 02:06:55,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:55,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:55,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:55,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:55,525 INFO L87 Difference]: Start difference. First operand 5225 states and 24785 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:55,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:55,618 INFO L93 Difference]: Finished difference Result 11271 states and 50359 transitions. [2021-05-22 02:06:55,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:55,618 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:55,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:55,646 INFO L225 Difference]: With dead ends: 11271 [2021-05-22 02:06:55,646 INFO L226 Difference]: Without dead ends: 10649 [2021-05-22 02:06:55,646 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:55,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10649 states. [2021-05-22 02:06:55,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10649 to 5145. [2021-05-22 02:06:55,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.7482503888024885) internal successors, (24425), 5144 states have internal predecessors, (24425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:55,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24425 transitions. [2021-05-22 02:06:55,886 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24425 transitions. Word has length 29 [2021-05-22 02:06:55,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:55,886 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24425 transitions. [2021-05-22 02:06:55,886 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:55,886 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24425 transitions. [2021-05-22 02:06:55,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:55,895 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:55,895 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:55,895 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1140 [2021-05-22 02:06:55,895 INFO L430 AbstractCegarLoop]: === Iteration 1142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:55,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:55,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1261611513, now seen corresponding path program 1137 times [2021-05-22 02:06:55,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:55,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993078561] [2021-05-22 02:06:55,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:55,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:55,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:55,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993078561] [2021-05-22 02:06:55,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993078561] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:55,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:55,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:55,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942545103] [2021-05-22 02:06:55,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:55,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:55,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:55,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:55,998 INFO L87 Difference]: Start difference. First operand 5145 states and 24425 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:56,111 INFO L93 Difference]: Finished difference Result 10937 states and 48993 transitions. [2021-05-22 02:06:56,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:56,112 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:56,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:56,139 INFO L225 Difference]: With dead ends: 10937 [2021-05-22 02:06:56,139 INFO L226 Difference]: Without dead ends: 10522 [2021-05-22 02:06:56,139 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:56,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10522 states. [2021-05-22 02:06:56,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10522 to 5193. [2021-05-22 02:06:56,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5193 states, 5192 states have (on average 4.738251155624037) internal successors, (24601), 5192 states have internal predecessors, (24601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:56,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 24601 transitions. [2021-05-22 02:06:56,386 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 24601 transitions. Word has length 29 [2021-05-22 02:06:56,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:56,386 INFO L482 AbstractCegarLoop]: Abstraction has 5193 states and 24601 transitions. [2021-05-22 02:06:56,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:56,386 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 24601 transitions. [2021-05-22 02:06:56,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:56,394 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:56,395 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:56,395 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1141 [2021-05-22 02:06:56,395 INFO L430 AbstractCegarLoop]: === Iteration 1143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:56,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:56,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1287330985, now seen corresponding path program 1138 times [2021-05-22 02:06:56,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:56,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351508825] [2021-05-22 02:06:56,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:56,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:56,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:56,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351508825] [2021-05-22 02:06:56,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351508825] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:56,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:56,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:56,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913246813] [2021-05-22 02:06:56,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:56,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:56,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:56,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:56,499 INFO L87 Difference]: Start difference. First operand 5193 states and 24601 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:56,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:56,624 INFO L93 Difference]: Finished difference Result 10665 states and 47984 transitions. [2021-05-22 02:06:56,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:56,624 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:56,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:56,651 INFO L225 Difference]: With dead ends: 10665 [2021-05-22 02:06:56,651 INFO L226 Difference]: Without dead ends: 10154 [2021-05-22 02:06:56,651 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:56,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10154 states. [2021-05-22 02:06:56,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10154 to 5145. [2021-05-22 02:06:56,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.743584758942458) internal successors, (24401), 5144 states have internal predecessors, (24401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:56,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24401 transitions. [2021-05-22 02:06:56,889 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24401 transitions. Word has length 29 [2021-05-22 02:06:56,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:56,889 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24401 transitions. [2021-05-22 02:06:56,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:56,889 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24401 transitions. [2021-05-22 02:06:56,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:56,897 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:56,898 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:56,898 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1142 [2021-05-22 02:06:56,898 INFO L430 AbstractCegarLoop]: === Iteration 1144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:56,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:56,898 INFO L82 PathProgramCache]: Analyzing trace with hash 681761961, now seen corresponding path program 1139 times [2021-05-22 02:06:56,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:56,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431312565] [2021-05-22 02:06:56,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:57,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:57,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431312565] [2021-05-22 02:06:57,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431312565] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:57,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:57,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:57,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691366651] [2021-05-22 02:06:57,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:57,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:57,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:57,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:57,011 INFO L87 Difference]: Start difference. First operand 5145 states and 24401 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:57,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:57,108 INFO L93 Difference]: Finished difference Result 11120 states and 49764 transitions. [2021-05-22 02:06:57,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:57,108 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:57,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:57,135 INFO L225 Difference]: With dead ends: 11120 [2021-05-22 02:06:57,136 INFO L226 Difference]: Without dead ends: 10578 [2021-05-22 02:06:57,136 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:57,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10578 states. [2021-05-22 02:06:57,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10578 to 5249. [2021-05-22 02:06:57,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5249 states, 5248 states have (on average 4.723513719512195) internal successors, (24789), 5248 states have internal predecessors, (24789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:57,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 24789 transitions. [2021-05-22 02:06:57,378 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 24789 transitions. Word has length 29 [2021-05-22 02:06:57,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:57,378 INFO L482 AbstractCegarLoop]: Abstraction has 5249 states and 24789 transitions. [2021-05-22 02:06:57,378 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:57,378 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 24789 transitions. [2021-05-22 02:06:57,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:57,387 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:57,387 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:57,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1143 [2021-05-22 02:06:57,387 INFO L430 AbstractCegarLoop]: === Iteration 1145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:57,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:57,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1243194759, now seen corresponding path program 1140 times [2021-05-22 02:06:57,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:57,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688761591] [2021-05-22 02:06:57,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:57,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:57,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:57,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688761591] [2021-05-22 02:06:57,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688761591] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:57,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:57,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:57,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268321737] [2021-05-22 02:06:57,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:57,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:57,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:57,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:57,508 INFO L87 Difference]: Start difference. First operand 5249 states and 24789 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:57,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:57,617 INFO L93 Difference]: Finished difference Result 10721 states and 48172 transitions. [2021-05-22 02:06:57,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:57,617 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:57,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:57,643 INFO L225 Difference]: With dead ends: 10721 [2021-05-22 02:06:57,643 INFO L226 Difference]: Without dead ends: 10114 [2021-05-22 02:06:57,643 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:57,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10114 states. [2021-05-22 02:06:57,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10114 to 5105. [2021-05-22 02:06:57,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.7494122257053295) internal successors, (24241), 5104 states have internal predecessors, (24241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:57,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24241 transitions. [2021-05-22 02:06:57,883 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24241 transitions. Word has length 29 [2021-05-22 02:06:57,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:57,883 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24241 transitions. [2021-05-22 02:06:57,884 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:57,884 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24241 transitions. [2021-05-22 02:06:57,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:57,893 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:57,893 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:57,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1144 [2021-05-22 02:06:57,893 INFO L430 AbstractCegarLoop]: === Iteration 1146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:57,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:57,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1300449607, now seen corresponding path program 1141 times [2021-05-22 02:06:57,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:57,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778639591] [2021-05-22 02:06:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:57,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:57,999 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:57,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778639591] [2021-05-22 02:06:57,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778639591] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:57,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:57,999 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:57,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664642574] [2021-05-22 02:06:57,999 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:57,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:57,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:58,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:58,000 INFO L87 Difference]: Start difference. First operand 5105 states and 24241 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:58,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:58,110 INFO L93 Difference]: Finished difference Result 10930 states and 48966 transitions. [2021-05-22 02:06:58,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:58,110 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:58,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:58,138 INFO L225 Difference]: With dead ends: 10930 [2021-05-22 02:06:58,138 INFO L226 Difference]: Without dead ends: 10515 [2021-05-22 02:06:58,138 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:58,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10515 states. [2021-05-22 02:06:58,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10515 to 5177. [2021-05-22 02:06:58,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5177 states, 5176 states have (on average 4.741306027820711) internal successors, (24541), 5176 states have internal predecessors, (24541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:58,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5177 states to 5177 states and 24541 transitions. [2021-05-22 02:06:58,386 INFO L78 Accepts]: Start accepts. Automaton has 5177 states and 24541 transitions. Word has length 29 [2021-05-22 02:06:58,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:58,387 INFO L482 AbstractCegarLoop]: Abstraction has 5177 states and 24541 transitions. [2021-05-22 02:06:58,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand 5177 states and 24541 transitions. [2021-05-22 02:06:58,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:58,396 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:58,396 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:58,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1145 [2021-05-22 02:06:58,396 INFO L430 AbstractCegarLoop]: === Iteration 1147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:58,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:58,396 INFO L82 PathProgramCache]: Analyzing trace with hash 785768681, now seen corresponding path program 1142 times [2021-05-22 02:06:58,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:58,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677431023] [2021-05-22 02:06:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:58,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:58,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:58,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677431023] [2021-05-22 02:06:58,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677431023] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:58,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:58,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:58,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815174864] [2021-05-22 02:06:58,506 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:58,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:58,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:58,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:58,506 INFO L87 Difference]: Start difference. First operand 5177 states and 24541 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:58,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:58,620 INFO L93 Difference]: Finished difference Result 10990 states and 49182 transitions. [2021-05-22 02:06:58,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:58,620 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:58,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:58,647 INFO L225 Difference]: With dead ends: 10990 [2021-05-22 02:06:58,647 INFO L226 Difference]: Without dead ends: 10467 [2021-05-22 02:06:58,647 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:58,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10467 states. [2021-05-22 02:06:58,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10467 to 5129. [2021-05-22 02:06:58,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.746684867394696) internal successors, (24341), 5128 states have internal predecessors, (24341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24341 transitions. [2021-05-22 02:06:58,883 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24341 transitions. Word has length 29 [2021-05-22 02:06:58,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:58,883 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24341 transitions. [2021-05-22 02:06:58,883 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:58,883 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24341 transitions. [2021-05-22 02:06:58,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:58,892 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:58,892 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:58,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1146 [2021-05-22 02:06:58,892 INFO L430 AbstractCegarLoop]: === Iteration 1148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:58,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:58,892 INFO L82 PathProgramCache]: Analyzing trace with hash 126489897, now seen corresponding path program 1143 times [2021-05-22 02:06:58,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:58,892 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925183289] [2021-05-22 02:06:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:58,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:58,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:58,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925183289] [2021-05-22 02:06:58,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925183289] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:58,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:58,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:58,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699250770] [2021-05-22 02:06:58,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:58,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:58,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:58,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:58,989 INFO L87 Difference]: Start difference. First operand 5129 states and 24341 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:59,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:59,114 INFO L93 Difference]: Finished difference Result 10822 states and 48502 transitions. [2021-05-22 02:06:59,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:59,114 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:59,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:59,142 INFO L225 Difference]: With dead ends: 10822 [2021-05-22 02:06:59,142 INFO L226 Difference]: Without dead ends: 10407 [2021-05-22 02:06:59,142 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:59,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10407 states. [2021-05-22 02:06:59,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10407 to 5177. [2021-05-22 02:06:59,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5177 states, 5176 states have (on average 4.736669242658423) internal successors, (24517), 5176 states have internal predecessors, (24517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:59,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5177 states to 5177 states and 24517 transitions. [2021-05-22 02:06:59,381 INFO L78 Accepts]: Start accepts. Automaton has 5177 states and 24517 transitions. Word has length 29 [2021-05-22 02:06:59,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:59,381 INFO L482 AbstractCegarLoop]: Abstraction has 5177 states and 24517 transitions. [2021-05-22 02:06:59,382 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:59,382 INFO L276 IsEmpty]: Start isEmpty. Operand 5177 states and 24517 transitions. [2021-05-22 02:06:59,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:59,390 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:59,390 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:59,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1147 [2021-05-22 02:06:59,390 INFO L430 AbstractCegarLoop]: === Iteration 1149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:59,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:59,391 INFO L82 PathProgramCache]: Analyzing trace with hash -75288599, now seen corresponding path program 1144 times [2021-05-22 02:06:59,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:59,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343249096] [2021-05-22 02:06:59,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:59,487 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:59,487 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343249096] [2021-05-22 02:06:59,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343249096] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:59,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:59,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:59,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359529409] [2021-05-22 02:06:59,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:59,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:59,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:59,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:59,488 INFO L87 Difference]: Start difference. First operand 5177 states and 24517 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:59,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:06:59,607 INFO L93 Difference]: Finished difference Result 10550 states and 47493 transitions. [2021-05-22 02:06:59,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:06:59,607 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:06:59,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:06:59,633 INFO L225 Difference]: With dead ends: 10550 [2021-05-22 02:06:59,634 INFO L226 Difference]: Without dead ends: 10039 [2021-05-22 02:06:59,634 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:06:59,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10039 states. [2021-05-22 02:06:59,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10039 to 5129. [2021-05-22 02:06:59,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.7420046801872076) internal successors, (24317), 5128 states have internal predecessors, (24317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:59,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24317 transitions. [2021-05-22 02:06:59,873 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24317 transitions. Word has length 29 [2021-05-22 02:06:59,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:06:59,873 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24317 transitions. [2021-05-22 02:06:59,873 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:06:59,873 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24317 transitions. [2021-05-22 02:06:59,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:06:59,882 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:06:59,882 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:06:59,883 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1148 [2021-05-22 02:06:59,883 INFO L430 AbstractCegarLoop]: === Iteration 1150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:06:59,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:06:59,883 INFO L82 PathProgramCache]: Analyzing trace with hash -2106816757, now seen corresponding path program 1145 times [2021-05-22 02:06:59,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:06:59,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350349758] [2021-05-22 02:06:59,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:06:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:06:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:06:59,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:06:59,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350349758] [2021-05-22 02:06:59,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350349758] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:06:59,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:06:59,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:06:59,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360456003] [2021-05-22 02:06:59,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:06:59,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:06:59,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:06:59,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:06:59,977 INFO L87 Difference]: Start difference. First operand 5129 states and 24317 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:00,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:00,092 INFO L93 Difference]: Finished difference Result 10906 states and 48866 transitions. [2021-05-22 02:07:00,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:00,093 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:00,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:00,119 INFO L225 Difference]: With dead ends: 10906 [2021-05-22 02:07:00,119 INFO L226 Difference]: Without dead ends: 10431 [2021-05-22 02:07:00,120 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:00,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10431 states. [2021-05-22 02:07:00,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10431 to 5201. [2021-05-22 02:07:00,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 4.7294230769230765) internal successors, (24593), 5200 states have internal predecessors, (24593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:00,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 24593 transitions. [2021-05-22 02:07:00,356 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 24593 transitions. Word has length 29 [2021-05-22 02:07:00,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:00,356 INFO L482 AbstractCegarLoop]: Abstraction has 5201 states and 24593 transitions. [2021-05-22 02:07:00,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:00,356 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 24593 transitions. [2021-05-22 02:07:00,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:00,365 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:00,365 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:00,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1149 [2021-05-22 02:07:00,365 INFO L430 AbstractCegarLoop]: === Iteration 1151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:00,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:00,365 INFO L82 PathProgramCache]: Analyzing trace with hash 796005993, now seen corresponding path program 1146 times [2021-05-22 02:07:00,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:00,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673806469] [2021-05-22 02:07:00,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:00,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:00,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673806469] [2021-05-22 02:07:00,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673806469] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:00,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:00,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:00,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935371563] [2021-05-22 02:07:00,462 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:00,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:00,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:00,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:00,462 INFO L87 Difference]: Start difference. First operand 5201 states and 24593 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:00,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:00,573 INFO L93 Difference]: Finished difference Result 10574 states and 47569 transitions. [2021-05-22 02:07:00,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:00,573 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:00,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:00,599 INFO L225 Difference]: With dead ends: 10574 [2021-05-22 02:07:00,599 INFO L226 Difference]: Without dead ends: 10015 [2021-05-22 02:07:00,599 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:00,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10015 states. [2021-05-22 02:07:00,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10015 to 5105. [2021-05-22 02:07:00,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.747061128526646) internal successors, (24229), 5104 states have internal predecessors, (24229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24229 transitions. [2021-05-22 02:07:00,832 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24229 transitions. Word has length 29 [2021-05-22 02:07:00,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:00,832 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24229 transitions. [2021-05-22 02:07:00,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:00,832 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24229 transitions. [2021-05-22 02:07:00,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:00,841 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:00,841 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:00,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1150 [2021-05-22 02:07:00,841 INFO L430 AbstractCegarLoop]: === Iteration 1152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:00,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:00,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1959692533, now seen corresponding path program 1147 times [2021-05-22 02:07:00,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:00,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331746610] [2021-05-22 02:07:00,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:00,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:00,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:00,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331746610] [2021-05-22 02:07:00,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331746610] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:00,938 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:00,938 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:00,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080145084] [2021-05-22 02:07:00,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:00,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:00,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:00,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:00,938 INFO L87 Difference]: Start difference. First operand 5105 states and 24229 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:01,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:01,037 INFO L93 Difference]: Finished difference Result 11457 states and 51242 transitions. [2021-05-22 02:07:01,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:01,037 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:01,064 INFO L225 Difference]: With dead ends: 11457 [2021-05-22 02:07:01,064 INFO L226 Difference]: Without dead ends: 10915 [2021-05-22 02:07:01,065 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 104.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:01,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10915 states. [2021-05-22 02:07:01,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10915 to 5267. [2021-05-22 02:07:01,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5267 states, 5266 states have (on average 4.729586023547284) internal successors, (24906), 5266 states have internal predecessors, (24906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:01,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5267 states to 5267 states and 24906 transitions. [2021-05-22 02:07:01,307 INFO L78 Accepts]: Start accepts. Automaton has 5267 states and 24906 transitions. Word has length 29 [2021-05-22 02:07:01,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:01,307 INFO L482 AbstractCegarLoop]: Abstraction has 5267 states and 24906 transitions. [2021-05-22 02:07:01,307 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:01,307 INFO L276 IsEmpty]: Start isEmpty. Operand 5267 states and 24906 transitions. [2021-05-22 02:07:01,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:01,316 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:01,316 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:01,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1151 [2021-05-22 02:07:01,316 INFO L430 AbstractCegarLoop]: === Iteration 1153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:01,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:01,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1594322665, now seen corresponding path program 1148 times [2021-05-22 02:07:01,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:01,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019522679] [2021-05-22 02:07:01,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:01,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:01,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019522679] [2021-05-22 02:07:01,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019522679] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:01,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:01,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:01,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971282588] [2021-05-22 02:07:01,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:01,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:01,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:01,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:01,412 INFO L87 Difference]: Start difference. First operand 5267 states and 24906 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:01,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:01,550 INFO L93 Difference]: Finished difference Result 11390 states and 50869 transitions. [2021-05-22 02:07:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:01,550 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:01,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:01,577 INFO L225 Difference]: With dead ends: 11390 [2021-05-22 02:07:01,577 INFO L226 Difference]: Without dead ends: 10805 [2021-05-22 02:07:01,577 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:01,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10805 states. [2021-05-22 02:07:01,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10805 to 5157. [2021-05-22 02:07:01,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 4.741854150504267) internal successors, (24449), 5156 states have internal predecessors, (24449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:01,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 24449 transitions. [2021-05-22 02:07:01,809 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 24449 transitions. Word has length 29 [2021-05-22 02:07:01,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:01,809 INFO L482 AbstractCegarLoop]: Abstraction has 5157 states and 24449 transitions. [2021-05-22 02:07:01,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:01,809 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 24449 transitions. [2021-05-22 02:07:01,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:01,817 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:01,817 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:01,817 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1152 [2021-05-22 02:07:01,817 INFO L430 AbstractCegarLoop]: === Iteration 1154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:01,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:01,817 INFO L82 PathProgramCache]: Analyzing trace with hash 219195113, now seen corresponding path program 1149 times [2021-05-22 02:07:01,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:01,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036496343] [2021-05-22 02:07:01,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:01,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:01,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:01,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036496343] [2021-05-22 02:07:01,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036496343] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:01,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:01,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:01,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875112947] [2021-05-22 02:07:01,920 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:01,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:01,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:01,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:01,920 INFO L87 Difference]: Start difference. First operand 5157 states and 24449 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:02,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:02,013 INFO L93 Difference]: Finished difference Result 11216 states and 50200 transitions. [2021-05-22 02:07:02,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:02,014 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:02,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:02,041 INFO L225 Difference]: With dead ends: 11216 [2021-05-22 02:07:02,041 INFO L226 Difference]: Without dead ends: 10674 [2021-05-22 02:07:02,041 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 109.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:02,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10674 states. [2021-05-22 02:07:02,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10674 to 5261. [2021-05-22 02:07:02,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 4.721863117870722) internal successors, (24837), 5260 states have internal predecessors, (24837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:02,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 24837 transitions. [2021-05-22 02:07:02,286 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 24837 transitions. Word has length 29 [2021-05-22 02:07:02,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:02,286 INFO L482 AbstractCegarLoop]: Abstraction has 5261 states and 24837 transitions. [2021-05-22 02:07:02,286 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:02,286 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 24837 transitions. [2021-05-22 02:07:02,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:02,294 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:02,294 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:02,294 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1153 [2021-05-22 02:07:02,294 INFO L430 AbstractCegarLoop]: === Iteration 1155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:02,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:02,295 INFO L82 PathProgramCache]: Analyzing trace with hash 2077368297, now seen corresponding path program 1150 times [2021-05-22 02:07:02,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:02,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497737178] [2021-05-22 02:07:02,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:02,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:02,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497737178] [2021-05-22 02:07:02,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497737178] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:02,398 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:02,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:02,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056297911] [2021-05-22 02:07:02,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:02,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:02,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:02,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:02,398 INFO L87 Difference]: Start difference. First operand 5261 states and 24837 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:02,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:02,520 INFO L93 Difference]: Finished difference Result 10817 states and 48608 transitions. [2021-05-22 02:07:02,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:02,520 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:02,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:02,546 INFO L225 Difference]: With dead ends: 10817 [2021-05-22 02:07:02,546 INFO L226 Difference]: Without dead ends: 10250 [2021-05-22 02:07:02,546 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:02,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10250 states. [2021-05-22 02:07:02,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10250 to 5157. [2021-05-22 02:07:02,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 4.7317688130333595) internal successors, (24397), 5156 states have internal predecessors, (24397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:02,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 24397 transitions. [2021-05-22 02:07:02,775 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 24397 transitions. Word has length 29 [2021-05-22 02:07:02,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:02,775 INFO L482 AbstractCegarLoop]: Abstraction has 5157 states and 24397 transitions. [2021-05-22 02:07:02,776 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:02,776 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 24397 transitions. [2021-05-22 02:07:02,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:02,784 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:02,784 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:02,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1154 [2021-05-22 02:07:02,784 INFO L430 AbstractCegarLoop]: === Iteration 1156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:02,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:02,784 INFO L82 PathProgramCache]: Analyzing trace with hash -34637753, now seen corresponding path program 1151 times [2021-05-22 02:07:02,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:02,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935989485] [2021-05-22 02:07:02,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:02,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:02,876 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:02,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935989485] [2021-05-22 02:07:02,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935989485] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:02,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:02,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:02,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121197450] [2021-05-22 02:07:02,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:02,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:02,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:02,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:02,877 INFO L87 Difference]: Start difference. First operand 5157 states and 24397 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:02,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:02,999 INFO L93 Difference]: Finished difference Result 11117 states and 49741 transitions. [2021-05-22 02:07:02,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:02,999 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:02,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:03,025 INFO L225 Difference]: With dead ends: 11117 [2021-05-22 02:07:03,025 INFO L226 Difference]: Without dead ends: 10642 [2021-05-22 02:07:03,025 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:03,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10642 states. [2021-05-22 02:07:03,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10642 to 5229. [2021-05-22 02:07:03,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5228 states have (on average 4.719395562356541) internal successors, (24673), 5228 states have internal predecessors, (24673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:03,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 24673 transitions. [2021-05-22 02:07:03,260 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 24673 transitions. Word has length 29 [2021-05-22 02:07:03,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:03,260 INFO L482 AbstractCegarLoop]: Abstraction has 5229 states and 24673 transitions. [2021-05-22 02:07:03,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:03,260 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 24673 transitions. [2021-05-22 02:07:03,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:03,268 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:03,268 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:03,268 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1155 [2021-05-22 02:07:03,268 INFO L430 AbstractCegarLoop]: === Iteration 1157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:03,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:03,269 INFO L82 PathProgramCache]: Analyzing trace with hash -241445719, now seen corresponding path program 1152 times [2021-05-22 02:07:03,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:03,269 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284333716] [2021-05-22 02:07:03,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:03,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:03,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284333716] [2021-05-22 02:07:03,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284333716] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:03,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:03,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:03,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621047445] [2021-05-22 02:07:03,360 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:03,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:03,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:03,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:03,361 INFO L87 Difference]: Start difference. First operand 5229 states and 24673 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:03,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:03,465 INFO L93 Difference]: Finished difference Result 10785 states and 48444 transitions. [2021-05-22 02:07:03,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:03,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:03,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:03,492 INFO L225 Difference]: With dead ends: 10785 [2021-05-22 02:07:03,492 INFO L226 Difference]: Without dead ends: 10178 [2021-05-22 02:07:03,492 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:03,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10178 states. [2021-05-22 02:07:03,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10178 to 5085. [2021-05-22 02:07:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5085 states, 5084 states have (on average 4.752360346184107) internal successors, (24161), 5084 states have internal predecessors, (24161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:03,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5085 states to 5085 states and 24161 transitions. [2021-05-22 02:07:03,719 INFO L78 Accepts]: Start accepts. Automaton has 5085 states and 24161 transitions. Word has length 29 [2021-05-22 02:07:03,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:03,719 INFO L482 AbstractCegarLoop]: Abstraction has 5085 states and 24161 transitions. [2021-05-22 02:07:03,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:03,719 INFO L276 IsEmpty]: Start isEmpty. Operand 5085 states and 24161 transitions. [2021-05-22 02:07:03,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:03,727 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:03,727 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:03,727 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1156 [2021-05-22 02:07:03,728 INFO L430 AbstractCegarLoop]: === Iteration 1158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:03,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:03,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1871056229, now seen corresponding path program 1153 times [2021-05-22 02:07:03,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:03,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47811800] [2021-05-22 02:07:03,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:03,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:03,833 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:03,833 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47811800] [2021-05-22 02:07:03,833 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47811800] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:03,833 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:03,833 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:03,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913335214] [2021-05-22 02:07:03,833 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:03,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:03,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:03,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:03,833 INFO L87 Difference]: Start difference. First operand 5085 states and 24161 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:03,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:03,937 INFO L93 Difference]: Finished difference Result 10449 states and 46756 transitions. [2021-05-22 02:07:03,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:03,937 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:03,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:03,963 INFO L225 Difference]: With dead ends: 10449 [2021-05-22 02:07:03,963 INFO L226 Difference]: Without dead ends: 10034 [2021-05-22 02:07:03,963 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:04,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10034 states. [2021-05-22 02:07:04,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10034 to 5141. [2021-05-22 02:07:04,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5140 states have (on average 4.746498054474708) internal successors, (24397), 5140 states have internal predecessors, (24397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:04,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 24397 transitions. [2021-05-22 02:07:04,201 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 24397 transitions. Word has length 29 [2021-05-22 02:07:04,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:04,201 INFO L482 AbstractCegarLoop]: Abstraction has 5141 states and 24397 transitions. [2021-05-22 02:07:04,201 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:04,201 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 24397 transitions. [2021-05-22 02:07:04,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:04,210 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:04,210 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:04,210 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1157 [2021-05-22 02:07:04,210 INFO L430 AbstractCegarLoop]: === Iteration 1159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:04,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:04,210 INFO L82 PathProgramCache]: Analyzing trace with hash -531064765, now seen corresponding path program 1154 times [2021-05-22 02:07:04,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:04,210 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523990266] [2021-05-22 02:07:04,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:04,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:04,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523990266] [2021-05-22 02:07:04,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523990266] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:04,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:04,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:04,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747284606] [2021-05-22 02:07:04,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:04,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:04,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:04,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:04,317 INFO L87 Difference]: Start difference. First operand 5141 states and 24397 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:04,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:04,407 INFO L93 Difference]: Finished difference Result 10449 states and 46724 transitions. [2021-05-22 02:07:04,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:04,407 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:04,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:04,433 INFO L225 Difference]: With dead ends: 10449 [2021-05-22 02:07:04,433 INFO L226 Difference]: Without dead ends: 10002 [2021-05-22 02:07:04,433 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:04,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10002 states. [2021-05-22 02:07:04,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10002 to 5109. [2021-05-22 02:07:04,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 4.751174628034455) internal successors, (24269), 5108 states have internal predecessors, (24269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:04,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 24269 transitions. [2021-05-22 02:07:04,659 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 24269 transitions. Word has length 29 [2021-05-22 02:07:04,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:04,659 INFO L482 AbstractCegarLoop]: Abstraction has 5109 states and 24269 transitions. [2021-05-22 02:07:04,659 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:04,659 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 24269 transitions. [2021-05-22 02:07:04,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:04,668 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:04,668 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:04,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1158 [2021-05-22 02:07:04,668 INFO L430 AbstractCegarLoop]: === Iteration 1160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:04,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:04,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1390154183, now seen corresponding path program 1155 times [2021-05-22 02:07:04,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:04,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286156692] [2021-05-22 02:07:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:04,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:04,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:04,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286156692] [2021-05-22 02:07:04,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286156692] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:04,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:04,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:04,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725942637] [2021-05-22 02:07:04,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:04,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:04,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:04,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:04,785 INFO L87 Difference]: Start difference. First operand 5109 states and 24269 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:04,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:04,894 INFO L93 Difference]: Finished difference Result 10525 states and 47084 transitions. [2021-05-22 02:07:04,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:04,895 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:04,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:04,920 INFO L225 Difference]: With dead ends: 10525 [2021-05-22 02:07:04,920 INFO L226 Difference]: Without dead ends: 10110 [2021-05-22 02:07:04,920 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:05,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10110 states. [2021-05-22 02:07:05,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10110 to 5157. [2021-05-22 02:07:05,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 4.741078355314197) internal successors, (24445), 5156 states have internal predecessors, (24445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:05,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 24445 transitions. [2021-05-22 02:07:05,149 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 24445 transitions. Word has length 29 [2021-05-22 02:07:05,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:05,149 INFO L482 AbstractCegarLoop]: Abstraction has 5157 states and 24445 transitions. [2021-05-22 02:07:05,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:05,149 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 24445 transitions. [2021-05-22 02:07:05,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:05,157 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:05,157 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:05,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1159 [2021-05-22 02:07:05,158 INFO L430 AbstractCegarLoop]: === Iteration 1161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:05,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:05,158 INFO L82 PathProgramCache]: Analyzing trace with hash -605965049, now seen corresponding path program 1156 times [2021-05-22 02:07:05,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:05,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947754173] [2021-05-22 02:07:05,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:05,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:05,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947754173] [2021-05-22 02:07:05,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947754173] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:05,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:05,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:05,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121853197] [2021-05-22 02:07:05,273 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:05,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:05,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:05,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:05,274 INFO L87 Difference]: Start difference. First operand 5157 states and 24445 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:05,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:05,385 INFO L93 Difference]: Finished difference Result 10585 states and 47300 transitions. [2021-05-22 02:07:05,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:05,386 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:05,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:05,412 INFO L225 Difference]: With dead ends: 10585 [2021-05-22 02:07:05,412 INFO L226 Difference]: Without dead ends: 10062 [2021-05-22 02:07:05,412 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:05,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10062 states. [2021-05-22 02:07:05,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10062 to 5109. [2021-05-22 02:07:05,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 4.74804228660924) internal successors, (24253), 5108 states have internal predecessors, (24253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:05,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 24253 transitions. [2021-05-22 02:07:05,643 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 24253 transitions. Word has length 29 [2021-05-22 02:07:05,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:05,643 INFO L482 AbstractCegarLoop]: Abstraction has 5109 states and 24253 transitions. [2021-05-22 02:07:05,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:05,643 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 24253 transitions. [2021-05-22 02:07:05,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:05,651 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:05,652 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:05,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1160 [2021-05-22 02:07:05,652 INFO L430 AbstractCegarLoop]: === Iteration 1162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:05,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:05,652 INFO L82 PathProgramCache]: Analyzing trace with hash -661760829, now seen corresponding path program 1157 times [2021-05-22 02:07:05,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:05,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108132797] [2021-05-22 02:07:05,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:05,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:05,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:05,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108132797] [2021-05-22 02:07:05,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108132797] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:05,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:05,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:05,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992218926] [2021-05-22 02:07:05,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:05,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:05,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:05,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:05,768 INFO L87 Difference]: Start difference. First operand 5109 states and 24253 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:05,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:05,871 INFO L93 Difference]: Finished difference Result 10525 states and 47068 transitions. [2021-05-22 02:07:05,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:05,871 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:05,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:05,897 INFO L225 Difference]: With dead ends: 10525 [2021-05-22 02:07:05,897 INFO L226 Difference]: Without dead ends: 10110 [2021-05-22 02:07:05,898 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:06,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10110 states. [2021-05-22 02:07:06,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10110 to 5157. [2021-05-22 02:07:06,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 4.737975174553918) internal successors, (24429), 5156 states have internal predecessors, (24429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:06,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 24429 transitions. [2021-05-22 02:07:06,131 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 24429 transitions. Word has length 29 [2021-05-22 02:07:06,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:06,132 INFO L482 AbstractCegarLoop]: Abstraction has 5157 states and 24429 transitions. [2021-05-22 02:07:06,132 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:06,132 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 24429 transitions. [2021-05-22 02:07:06,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:06,140 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:06,140 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:06,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1161 [2021-05-22 02:07:06,140 INFO L430 AbstractCegarLoop]: === Iteration 1163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:06,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:06,141 INFO L82 PathProgramCache]: Analyzing trace with hash 419301797, now seen corresponding path program 1158 times [2021-05-22 02:07:06,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:06,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773762697] [2021-05-22 02:07:06,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:06,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:06,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773762697] [2021-05-22 02:07:06,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773762697] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:06,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:06,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:06,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923540878] [2021-05-22 02:07:06,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:06,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:06,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:06,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:06,256 INFO L87 Difference]: Start difference. First operand 5157 states and 24429 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:06,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:06,369 INFO L93 Difference]: Finished difference Result 10585 states and 47284 transitions. [2021-05-22 02:07:06,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:06,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:06,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:06,394 INFO L225 Difference]: With dead ends: 10585 [2021-05-22 02:07:06,395 INFO L226 Difference]: Without dead ends: 10046 [2021-05-22 02:07:06,395 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:06,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10046 states. [2021-05-22 02:07:06,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10046 to 5093. [2021-05-22 02:07:06,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 5092 states have (on average 4.751963864886096) internal successors, (24197), 5092 states have internal predecessors, (24197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:06,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 24197 transitions. [2021-05-22 02:07:06,623 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 24197 transitions. Word has length 29 [2021-05-22 02:07:06,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:06,624 INFO L482 AbstractCegarLoop]: Abstraction has 5093 states and 24197 transitions. [2021-05-22 02:07:06,624 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:06,624 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 24197 transitions. [2021-05-22 02:07:06,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:06,632 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:06,632 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:06,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1162 [2021-05-22 02:07:06,632 INFO L430 AbstractCegarLoop]: === Iteration 1164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:06,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:06,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1022793529, now seen corresponding path program 1159 times [2021-05-22 02:07:06,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:06,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599397829] [2021-05-22 02:07:06,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:06,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:06,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599397829] [2021-05-22 02:07:06,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599397829] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:06,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:06,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:06,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363374618] [2021-05-22 02:07:06,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:06,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:06,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:06,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:06,731 INFO L87 Difference]: Start difference. First operand 5093 states and 24197 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:06,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:06,847 INFO L93 Difference]: Finished difference Result 10405 states and 46564 transitions. [2021-05-22 02:07:06,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:06,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:06,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:06,874 INFO L225 Difference]: With dead ends: 10405 [2021-05-22 02:07:06,875 INFO L226 Difference]: Without dead ends: 9990 [2021-05-22 02:07:06,875 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:06,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9990 states. [2021-05-22 02:07:07,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9990 to 5141. [2021-05-22 02:07:07,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5141 states, 5140 states have (on average 4.744941634241245) internal successors, (24389), 5140 states have internal predecessors, (24389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:07,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 24389 transitions. [2021-05-22 02:07:07,111 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 24389 transitions. Word has length 29 [2021-05-22 02:07:07,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:07,111 INFO L482 AbstractCegarLoop]: Abstraction has 5141 states and 24389 transitions. [2021-05-22 02:07:07,111 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:07,111 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 24389 transitions. [2021-05-22 02:07:07,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:07,120 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:07,120 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:07,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1163 [2021-05-22 02:07:07,120 INFO L430 AbstractCegarLoop]: === Iteration 1165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:07,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:07,120 INFO L82 PathProgramCache]: Analyzing trace with hash 870052773, now seen corresponding path program 1160 times [2021-05-22 02:07:07,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:07,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885856231] [2021-05-22 02:07:07,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:07,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:07,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885856231] [2021-05-22 02:07:07,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885856231] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:07,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:07,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:07,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520453224] [2021-05-22 02:07:07,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:07,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:07,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:07,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:07,221 INFO L87 Difference]: Start difference. First operand 5141 states and 24389 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:07,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:07,316 INFO L93 Difference]: Finished difference Result 10405 states and 46532 transitions. [2021-05-22 02:07:07,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:07,316 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:07,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:07,342 INFO L225 Difference]: With dead ends: 10405 [2021-05-22 02:07:07,342 INFO L226 Difference]: Without dead ends: 9958 [2021-05-22 02:07:07,342 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 106.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:07,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9958 states. [2021-05-22 02:07:07,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9958 to 5109. [2021-05-22 02:07:07,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 4.749608457321848) internal successors, (24261), 5108 states have internal predecessors, (24261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:07,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 24261 transitions. [2021-05-22 02:07:07,578 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 24261 transitions. Word has length 29 [2021-05-22 02:07:07,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:07,578 INFO L482 AbstractCegarLoop]: Abstraction has 5109 states and 24261 transitions. [2021-05-22 02:07:07,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:07,578 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 24261 transitions. [2021-05-22 02:07:07,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:07,587 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:07,587 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:07,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1164 [2021-05-22 02:07:07,587 INFO L430 AbstractCegarLoop]: === Iteration 1166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:07,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:07,588 INFO L82 PathProgramCache]: Analyzing trace with hash -632831801, now seen corresponding path program 1161 times [2021-05-22 02:07:07,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:07,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46182625] [2021-05-22 02:07:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:07,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:07,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46182625] [2021-05-22 02:07:07,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46182625] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:07,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:07,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:07,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030204244] [2021-05-22 02:07:07,687 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:07,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:07,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:07,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:07,687 INFO L87 Difference]: Start difference. First operand 5109 states and 24261 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:07,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:07,795 INFO L93 Difference]: Finished difference Result 10373 states and 46452 transitions. [2021-05-22 02:07:07,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:07,795 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:07,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:07,821 INFO L225 Difference]: With dead ends: 10373 [2021-05-22 02:07:07,821 INFO L226 Difference]: Without dead ends: 9958 [2021-05-22 02:07:07,821 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:07,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9958 states. [2021-05-22 02:07:08,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9958 to 5157. [2021-05-22 02:07:08,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 4.739526764934057) internal successors, (24437), 5156 states have internal predecessors, (24437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 24437 transitions. [2021-05-22 02:07:08,056 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 24437 transitions. Word has length 29 [2021-05-22 02:07:08,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:08,056 INFO L482 AbstractCegarLoop]: Abstraction has 5157 states and 24437 transitions. [2021-05-22 02:07:08,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:08,056 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 24437 transitions. [2021-05-22 02:07:08,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:08,065 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:08,065 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:08,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1165 [2021-05-22 02:07:08,065 INFO L430 AbstractCegarLoop]: === Iteration 1167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:08,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:08,065 INFO L82 PathProgramCache]: Analyzing trace with hash -2103892985, now seen corresponding path program 1162 times [2021-05-22 02:07:08,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:08,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641089497] [2021-05-22 02:07:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:08,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:08,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:08,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641089497] [2021-05-22 02:07:08,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641089497] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:08,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:08,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:08,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163534502] [2021-05-22 02:07:08,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:08,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:08,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:08,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:08,164 INFO L87 Difference]: Start difference. First operand 5157 states and 24437 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:08,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:08,278 INFO L93 Difference]: Finished difference Result 10101 states and 45443 transitions. [2021-05-22 02:07:08,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:08,278 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:08,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:08,303 INFO L225 Difference]: With dead ends: 10101 [2021-05-22 02:07:08,303 INFO L226 Difference]: Without dead ends: 9590 [2021-05-22 02:07:08,303 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:08,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9590 states. [2021-05-22 02:07:08,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9590 to 5109. [2021-05-22 02:07:08,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5109 states, 5108 states have (on average 4.746476115896633) internal successors, (24245), 5108 states have internal predecessors, (24245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:08,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5109 states to 5109 states and 24245 transitions. [2021-05-22 02:07:08,534 INFO L78 Accepts]: Start accepts. Automaton has 5109 states and 24245 transitions. Word has length 29 [2021-05-22 02:07:08,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:08,534 INFO L482 AbstractCegarLoop]: Abstraction has 5109 states and 24245 transitions. [2021-05-22 02:07:08,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:08,535 INFO L276 IsEmpty]: Start isEmpty. Operand 5109 states and 24245 transitions. [2021-05-22 02:07:08,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:08,543 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:08,543 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:08,543 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1166 [2021-05-22 02:07:08,543 INFO L430 AbstractCegarLoop]: === Iteration 1168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:08,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:08,544 INFO L82 PathProgramCache]: Analyzing trace with hash -928344893, now seen corresponding path program 1163 times [2021-05-22 02:07:08,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:08,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494401320] [2021-05-22 02:07:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:08,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:08,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:08,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494401320] [2021-05-22 02:07:08,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494401320] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:08,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:08,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:08,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907733339] [2021-05-22 02:07:08,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:08,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:08,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:08,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:08,644 INFO L87 Difference]: Start difference. First operand 5109 states and 24245 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:08,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:08,741 INFO L93 Difference]: Finished difference Result 10373 states and 46436 transitions. [2021-05-22 02:07:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:08,741 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:08,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:08,767 INFO L225 Difference]: With dead ends: 10373 [2021-05-22 02:07:08,767 INFO L226 Difference]: Without dead ends: 9958 [2021-05-22 02:07:08,767 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 106.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:08,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9958 states. [2021-05-22 02:07:08,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9958 to 5157. [2021-05-22 02:07:08,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 4.736423584173778) internal successors, (24421), 5156 states have internal predecessors, (24421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:09,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 24421 transitions. [2021-05-22 02:07:09,003 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 24421 transitions. Word has length 29 [2021-05-22 02:07:09,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:09,004 INFO L482 AbstractCegarLoop]: Abstraction has 5157 states and 24421 transitions. [2021-05-22 02:07:09,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:09,004 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 24421 transitions. [2021-05-22 02:07:09,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:09,012 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:09,012 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:09,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1167 [2021-05-22 02:07:09,012 INFO L430 AbstractCegarLoop]: === Iteration 1169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:09,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:09,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1871943845, now seen corresponding path program 1164 times [2021-05-22 02:07:09,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:09,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433583566] [2021-05-22 02:07:09,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:09,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:09,110 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:09,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433583566] [2021-05-22 02:07:09,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433583566] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:09,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:09,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:09,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490120666] [2021-05-22 02:07:09,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:09,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:09,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:09,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:09,110 INFO L87 Difference]: Start difference. First operand 5157 states and 24421 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:09,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:09,234 INFO L93 Difference]: Finished difference Result 10101 states and 45427 transitions. [2021-05-22 02:07:09,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:09,235 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:09,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:09,261 INFO L225 Difference]: With dead ends: 10101 [2021-05-22 02:07:09,261 INFO L226 Difference]: Without dead ends: 9574 [2021-05-22 02:07:09,261 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:09,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9574 states. [2021-05-22 02:07:09,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9574 to 5093. [2021-05-22 02:07:09,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 5092 states have (on average 4.750392772977219) internal successors, (24189), 5092 states have internal predecessors, (24189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:09,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 24189 transitions. [2021-05-22 02:07:09,489 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 24189 transitions. Word has length 29 [2021-05-22 02:07:09,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:09,489 INFO L482 AbstractCegarLoop]: Abstraction has 5093 states and 24189 transitions. [2021-05-22 02:07:09,489 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:09,489 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 24189 transitions. [2021-05-22 02:07:09,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:09,497 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:09,497 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:09,497 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1168 [2021-05-22 02:07:09,497 INFO L430 AbstractCegarLoop]: === Iteration 1170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:09,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:09,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1812179799, now seen corresponding path program 1165 times [2021-05-22 02:07:09,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:09,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347993482] [2021-05-22 02:07:09,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:09,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:09,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347993482] [2021-05-22 02:07:09,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347993482] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:09,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:09,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:09,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943600525] [2021-05-22 02:07:09,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:09,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:09,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:09,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:09,607 INFO L87 Difference]: Start difference. First operand 5093 states and 24189 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:09,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:09,718 INFO L93 Difference]: Finished difference Result 10573 states and 47332 transitions. [2021-05-22 02:07:09,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:09,718 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:09,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:09,745 INFO L225 Difference]: With dead ends: 10573 [2021-05-22 02:07:09,745 INFO L226 Difference]: Without dead ends: 10158 [2021-05-22 02:07:09,745 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:09,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10158 states. [2021-05-22 02:07:09,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10158 to 5165. [2021-05-22 02:07:09,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.742254066615027) internal successors, (24489), 5164 states have internal predecessors, (24489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:09,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24489 transitions. [2021-05-22 02:07:09,977 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24489 transitions. Word has length 29 [2021-05-22 02:07:09,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:09,978 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24489 transitions. [2021-05-22 02:07:09,978 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:09,978 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24489 transitions. [2021-05-22 02:07:09,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:09,986 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:09,986 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:09,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1169 [2021-05-22 02:07:09,986 INFO L430 AbstractCegarLoop]: === Iteration 1171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:09,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:09,986 INFO L82 PathProgramCache]: Analyzing trace with hash 486668265, now seen corresponding path program 1166 times [2021-05-22 02:07:09,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:09,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066779231] [2021-05-22 02:07:09,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:10,096 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:10,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066779231] [2021-05-22 02:07:10,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066779231] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:10,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:10,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:10,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804105969] [2021-05-22 02:07:10,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:10,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:10,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:10,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:10,096 INFO L87 Difference]: Start difference. First operand 5165 states and 24489 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:10,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:10,205 INFO L93 Difference]: Finished difference Result 10633 states and 47548 transitions. [2021-05-22 02:07:10,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:10,206 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:10,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:10,232 INFO L225 Difference]: With dead ends: 10633 [2021-05-22 02:07:10,232 INFO L226 Difference]: Without dead ends: 10110 [2021-05-22 02:07:10,233 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:10,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10110 states. [2021-05-22 02:07:10,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10110 to 5117. [2021-05-22 02:07:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.747654417513683) internal successors, (24289), 5116 states have internal predecessors, (24289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:10,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24289 transitions. [2021-05-22 02:07:10,467 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24289 transitions. Word has length 29 [2021-05-22 02:07:10,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:10,467 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24289 transitions. [2021-05-22 02:07:10,467 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:10,467 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24289 transitions. [2021-05-22 02:07:10,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:10,476 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:10,476 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:10,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1170 [2021-05-22 02:07:10,476 INFO L430 AbstractCegarLoop]: === Iteration 1172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:10,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:10,476 INFO L82 PathProgramCache]: Analyzing trace with hash 449774855, now seen corresponding path program 1167 times [2021-05-22 02:07:10,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:10,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614211506] [2021-05-22 02:07:10,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:10,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:10,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614211506] [2021-05-22 02:07:10,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614211506] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:10,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:10,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:10,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097969945] [2021-05-22 02:07:10,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:10,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:10,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:10,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:10,573 INFO L87 Difference]: Start difference. First operand 5117 states and 24289 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:10,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:10,682 INFO L93 Difference]: Finished difference Result 10465 states and 46868 transitions. [2021-05-22 02:07:10,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:10,682 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:10,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:10,708 INFO L225 Difference]: With dead ends: 10465 [2021-05-22 02:07:10,709 INFO L226 Difference]: Without dead ends: 10050 [2021-05-22 02:07:10,709 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:10,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10050 states. [2021-05-22 02:07:10,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10050 to 5165. [2021-05-22 02:07:10,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.737606506584044) internal successors, (24465), 5164 states have internal predecessors, (24465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:10,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24465 transitions. [2021-05-22 02:07:10,938 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24465 transitions. Word has length 29 [2021-05-22 02:07:10,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:10,938 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24465 transitions. [2021-05-22 02:07:10,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:10,938 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24465 transitions. [2021-05-22 02:07:10,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:10,946 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:10,946 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:10,946 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1171 [2021-05-22 02:07:10,946 INFO L430 AbstractCegarLoop]: === Iteration 1173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:10,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:10,946 INFO L82 PathProgramCache]: Analyzing trace with hash -394291223, now seen corresponding path program 1168 times [2021-05-22 02:07:10,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:10,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368764491] [2021-05-22 02:07:10,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:11,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:11,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368764491] [2021-05-22 02:07:11,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368764491] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:11,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:11,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:11,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916652497] [2021-05-22 02:07:11,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:11,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:11,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:11,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:11,045 INFO L87 Difference]: Start difference. First operand 5165 states and 24465 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:11,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:11,155 INFO L93 Difference]: Finished difference Result 10193 states and 45859 transitions. [2021-05-22 02:07:11,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:11,155 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:11,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:11,181 INFO L225 Difference]: With dead ends: 10193 [2021-05-22 02:07:11,181 INFO L226 Difference]: Without dead ends: 9682 [2021-05-22 02:07:11,181 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:11,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9682 states. [2021-05-22 02:07:11,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9682 to 5117. [2021-05-22 02:07:11,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.742963252541048) internal successors, (24265), 5116 states have internal predecessors, (24265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:11,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24265 transitions. [2021-05-22 02:07:11,413 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24265 transitions. Word has length 29 [2021-05-22 02:07:11,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:11,414 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24265 transitions. [2021-05-22 02:07:11,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:11,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24265 transitions. [2021-05-22 02:07:11,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:11,422 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:11,422 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:11,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1172 [2021-05-22 02:07:11,422 INFO L430 AbstractCegarLoop]: === Iteration 1174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:11,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:11,423 INFO L82 PathProgramCache]: Analyzing trace with hash -158889175, now seen corresponding path program 1169 times [2021-05-22 02:07:11,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:11,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906088713] [2021-05-22 02:07:11,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:11,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:11,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906088713] [2021-05-22 02:07:11,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906088713] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:11,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:11,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:11,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523825992] [2021-05-22 02:07:11,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:11,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:11,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:11,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:11,520 INFO L87 Difference]: Start difference. First operand 5117 states and 24265 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:11,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:11,628 INFO L93 Difference]: Finished difference Result 10549 states and 47232 transitions. [2021-05-22 02:07:11,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:11,628 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:11,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:11,654 INFO L225 Difference]: With dead ends: 10549 [2021-05-22 02:07:11,654 INFO L226 Difference]: Without dead ends: 10074 [2021-05-22 02:07:11,654 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:11,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10074 states. [2021-05-22 02:07:11,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10074 to 5189. [2021-05-22 02:07:11,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 4.730339244410177) internal successors, (24541), 5188 states have internal predecessors, (24541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:11,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 24541 transitions. [2021-05-22 02:07:11,921 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 24541 transitions. Word has length 29 [2021-05-22 02:07:11,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:11,921 INFO L482 AbstractCegarLoop]: Abstraction has 5189 states and 24541 transitions. [2021-05-22 02:07:11,921 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:11,921 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 24541 transitions. [2021-05-22 02:07:11,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:11,929 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:11,929 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:11,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1173 [2021-05-22 02:07:11,929 INFO L430 AbstractCegarLoop]: === Iteration 1175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:11,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:11,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1551033721, now seen corresponding path program 1170 times [2021-05-22 02:07:11,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:11,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414736336] [2021-05-22 02:07:11,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:12,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:12,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:12,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414736336] [2021-05-22 02:07:12,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414736336] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:12,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:12,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:12,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375701356] [2021-05-22 02:07:12,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:12,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:12,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:12,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:12,025 INFO L87 Difference]: Start difference. First operand 5189 states and 24541 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:12,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:12,136 INFO L93 Difference]: Finished difference Result 10217 states and 45935 transitions. [2021-05-22 02:07:12,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:12,136 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:12,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:12,160 INFO L225 Difference]: With dead ends: 10217 [2021-05-22 02:07:12,161 INFO L226 Difference]: Without dead ends: 9658 [2021-05-22 02:07:12,161 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:12,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9658 states. [2021-05-22 02:07:12,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9658 to 5093. [2021-05-22 02:07:12,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 5092 states have (on average 4.748821681068343) internal successors, (24181), 5092 states have internal predecessors, (24181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:12,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 24181 transitions. [2021-05-22 02:07:12,389 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 24181 transitions. Word has length 29 [2021-05-22 02:07:12,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:12,389 INFO L482 AbstractCegarLoop]: Abstraction has 5093 states and 24181 transitions. [2021-05-22 02:07:12,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:12,389 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 24181 transitions. [2021-05-22 02:07:12,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:12,397 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:12,397 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:12,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1174 [2021-05-22 02:07:12,397 INFO L430 AbstractCegarLoop]: === Iteration 1176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:12,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:12,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1951469891, now seen corresponding path program 1171 times [2021-05-22 02:07:12,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:12,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490615223] [2021-05-22 02:07:12,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:12,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:12,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490615223] [2021-05-22 02:07:12,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490615223] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:12,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:12,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:12,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542304475] [2021-05-22 02:07:12,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:12,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:12,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:12,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:12,503 INFO L87 Difference]: Start difference. First operand 5093 states and 24181 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:12,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:12,597 INFO L93 Difference]: Finished difference Result 10573 states and 47324 transitions. [2021-05-22 02:07:12,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:12,598 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:12,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:12,624 INFO L225 Difference]: With dead ends: 10573 [2021-05-22 02:07:12,624 INFO L226 Difference]: Without dead ends: 10158 [2021-05-22 02:07:12,624 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 111.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:12,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10158 states. [2021-05-22 02:07:12,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10158 to 5165. [2021-05-22 02:07:12,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.740704879938033) internal successors, (24481), 5164 states have internal predecessors, (24481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:12,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24481 transitions. [2021-05-22 02:07:12,859 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24481 transitions. Word has length 29 [2021-05-22 02:07:12,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:12,860 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24481 transitions. [2021-05-22 02:07:12,860 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:12,860 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24481 transitions. [2021-05-22 02:07:12,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:12,869 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:12,869 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:12,869 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1175 [2021-05-22 02:07:12,869 INFO L430 AbstractCegarLoop]: === Iteration 1177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:12,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:12,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1262434779, now seen corresponding path program 1172 times [2021-05-22 02:07:12,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:12,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450917982] [2021-05-22 02:07:12,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:12,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:12,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450917982] [2021-05-22 02:07:12,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450917982] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:12,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:12,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:12,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542501526] [2021-05-22 02:07:12,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:12,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:12,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:12,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:12,975 INFO L87 Difference]: Start difference. First operand 5165 states and 24481 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:13,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:13,088 INFO L93 Difference]: Finished difference Result 10633 states and 47540 transitions. [2021-05-22 02:07:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:13,089 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:13,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:13,115 INFO L225 Difference]: With dead ends: 10633 [2021-05-22 02:07:13,115 INFO L226 Difference]: Without dead ends: 10110 [2021-05-22 02:07:13,115 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:13,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10110 states. [2021-05-22 02:07:13,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10110 to 5117. [2021-05-22 02:07:13,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.746090695856138) internal successors, (24281), 5116 states have internal predecessors, (24281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24281 transitions. [2021-05-22 02:07:13,350 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24281 transitions. Word has length 29 [2021-05-22 02:07:13,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:13,350 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24281 transitions. [2021-05-22 02:07:13,350 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:13,350 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24281 transitions. [2021-05-22 02:07:13,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:13,358 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:13,358 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:13,358 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1176 [2021-05-22 02:07:13,359 INFO L430 AbstractCegarLoop]: === Iteration 1178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:13,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:13,359 INFO L82 PathProgramCache]: Analyzing trace with hash 777510181, now seen corresponding path program 1173 times [2021-05-22 02:07:13,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:13,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410216309] [2021-05-22 02:07:13,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:13,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:13,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410216309] [2021-05-22 02:07:13,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410216309] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:13,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:13,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:13,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380795906] [2021-05-22 02:07:13,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:13,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:13,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:13,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:13,457 INFO L87 Difference]: Start difference. First operand 5117 states and 24281 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:13,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:13,553 INFO L93 Difference]: Finished difference Result 10465 states and 46860 transitions. [2021-05-22 02:07:13,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:13,553 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:13,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:13,580 INFO L225 Difference]: With dead ends: 10465 [2021-05-22 02:07:13,580 INFO L226 Difference]: Without dead ends: 10050 [2021-05-22 02:07:13,580 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 104.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:13,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10050 states. [2021-05-22 02:07:13,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10050 to 5165. [2021-05-22 02:07:13,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.736057319907049) internal successors, (24457), 5164 states have internal predecessors, (24457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:13,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24457 transitions. [2021-05-22 02:07:13,811 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24457 transitions. Word has length 29 [2021-05-22 02:07:13,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:13,811 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24457 transitions. [2021-05-22 02:07:13,811 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:13,811 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24457 transitions. [2021-05-22 02:07:13,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:13,820 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:13,820 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:13,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1177 [2021-05-22 02:07:13,820 INFO L430 AbstractCegarLoop]: === Iteration 1179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:13,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:13,820 INFO L82 PathProgramCache]: Analyzing trace with hash 827077925, now seen corresponding path program 1174 times [2021-05-22 02:07:13,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:13,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899515149] [2021-05-22 02:07:13,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:13,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:13,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899515149] [2021-05-22 02:07:13,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899515149] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:13,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:13,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:13,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073497467] [2021-05-22 02:07:13,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:13,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:13,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:13,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:13,916 INFO L87 Difference]: Start difference. First operand 5165 states and 24457 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:14,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:14,025 INFO L93 Difference]: Finished difference Result 10193 states and 45851 transitions. [2021-05-22 02:07:14,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:14,025 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:14,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:14,050 INFO L225 Difference]: With dead ends: 10193 [2021-05-22 02:07:14,050 INFO L226 Difference]: Without dead ends: 9682 [2021-05-22 02:07:14,051 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:14,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9682 states. [2021-05-22 02:07:14,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9682 to 5117. [2021-05-22 02:07:14,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.741399530883503) internal successors, (24257), 5116 states have internal predecessors, (24257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:14,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24257 transitions. [2021-05-22 02:07:14,280 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24257 transitions. Word has length 29 [2021-05-22 02:07:14,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:14,281 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24257 transitions. [2021-05-22 02:07:14,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:14,281 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24257 transitions. [2021-05-22 02:07:14,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:14,289 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:14,289 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:14,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1178 [2021-05-22 02:07:14,289 INFO L430 AbstractCegarLoop]: === Iteration 1180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:14,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:14,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1165515143, now seen corresponding path program 1175 times [2021-05-22 02:07:14,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:14,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551649799] [2021-05-22 02:07:14,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:14,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:14,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:14,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551649799] [2021-05-22 02:07:14,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551649799] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:14,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:14,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:14,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428165123] [2021-05-22 02:07:14,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:14,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:14,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:14,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:14,385 INFO L87 Difference]: Start difference. First operand 5117 states and 24257 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:14,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:14,507 INFO L93 Difference]: Finished difference Result 10549 states and 47224 transitions. [2021-05-22 02:07:14,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:14,508 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:14,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:14,533 INFO L225 Difference]: With dead ends: 10549 [2021-05-22 02:07:14,533 INFO L226 Difference]: Without dead ends: 10074 [2021-05-22 02:07:14,533 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:14,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10074 states. [2021-05-22 02:07:14,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10074 to 5189. [2021-05-22 02:07:14,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 4.728797224363917) internal successors, (24533), 5188 states have internal predecessors, (24533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:14,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 24533 transitions. [2021-05-22 02:07:14,761 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 24533 transitions. Word has length 29 [2021-05-22 02:07:14,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:14,761 INFO L482 AbstractCegarLoop]: Abstraction has 5189 states and 24533 transitions. [2021-05-22 02:07:14,761 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:14,761 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 24533 transitions. [2021-05-22 02:07:14,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:14,769 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:14,769 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:14,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1179 [2021-05-22 02:07:14,769 INFO L430 AbstractCegarLoop]: === Iteration 1181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:14,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:14,770 INFO L82 PathProgramCache]: Analyzing trace with hash -950564507, now seen corresponding path program 1176 times [2021-05-22 02:07:14,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:14,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84818560] [2021-05-22 02:07:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:14,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:14,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:14,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84818560] [2021-05-22 02:07:14,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84818560] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:14,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:14,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:14,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300741413] [2021-05-22 02:07:14,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:14,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:14,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:14,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:14,865 INFO L87 Difference]: Start difference. First operand 5189 states and 24533 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:14,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:14,987 INFO L93 Difference]: Finished difference Result 10217 states and 45927 transitions. [2021-05-22 02:07:14,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:14,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:14,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:15,014 INFO L225 Difference]: With dead ends: 10217 [2021-05-22 02:07:15,014 INFO L226 Difference]: Without dead ends: 9650 [2021-05-22 02:07:15,014 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:15,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9650 states. [2021-05-22 02:07:15,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9650 to 5085. [2021-05-22 02:07:15,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5085 states, 5084 states have (on average 4.751573564122738) internal successors, (24157), 5084 states have internal predecessors, (24157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:15,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5085 states to 5085 states and 24157 transitions. [2021-05-22 02:07:15,238 INFO L78 Accepts]: Start accepts. Automaton has 5085 states and 24157 transitions. Word has length 29 [2021-05-22 02:07:15,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:15,238 INFO L482 AbstractCegarLoop]: Abstraction has 5085 states and 24157 transitions. [2021-05-22 02:07:15,238 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:15,238 INFO L276 IsEmpty]: Start isEmpty. Operand 5085 states and 24157 transitions. [2021-05-22 02:07:15,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:15,246 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:15,246 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:15,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1180 [2021-05-22 02:07:15,247 INFO L430 AbstractCegarLoop]: === Iteration 1182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:15,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:15,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1793736225, now seen corresponding path program 1177 times [2021-05-22 02:07:15,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:15,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843717251] [2021-05-22 02:07:15,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:15,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:15,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843717251] [2021-05-22 02:07:15,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843717251] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:15,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:15,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:15,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962599615] [2021-05-22 02:07:15,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:15,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:15,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:15,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:15,357 INFO L87 Difference]: Start difference. First operand 5085 states and 24157 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:15,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:15,460 INFO L93 Difference]: Finished difference Result 11369 states and 50846 transitions. [2021-05-22 02:07:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:15,460 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:15,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:15,487 INFO L225 Difference]: With dead ends: 11369 [2021-05-22 02:07:15,487 INFO L226 Difference]: Without dead ends: 10827 [2021-05-22 02:07:15,488 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:15,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10827 states. [2021-05-22 02:07:15,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10827 to 5225. [2021-05-22 02:07:15,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 4.739854517611026) internal successors, (24761), 5224 states have internal predecessors, (24761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:15,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 24761 transitions. [2021-05-22 02:07:15,723 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 24761 transitions. Word has length 29 [2021-05-22 02:07:15,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:15,724 INFO L482 AbstractCegarLoop]: Abstraction has 5225 states and 24761 transitions. [2021-05-22 02:07:15,724 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:15,724 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 24761 transitions. [2021-05-22 02:07:15,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:15,732 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:15,732 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:15,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1181 [2021-05-22 02:07:15,732 INFO L430 AbstractCegarLoop]: === Iteration 1183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:15,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:15,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1586928259, now seen corresponding path program 1178 times [2021-05-22 02:07:15,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:15,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012461420] [2021-05-22 02:07:15,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:15,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:15,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012461420] [2021-05-22 02:07:15,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012461420] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:15,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:15,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:15,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165380821] [2021-05-22 02:07:15,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:15,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:15,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:15,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:15,843 INFO L87 Difference]: Start difference. First operand 5225 states and 24761 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:15,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:15,932 INFO L93 Difference]: Finished difference Result 11242 states and 50239 transitions. [2021-05-22 02:07:15,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:15,932 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:15,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:15,959 INFO L225 Difference]: With dead ends: 11242 [2021-05-22 02:07:15,959 INFO L226 Difference]: Without dead ends: 10747 [2021-05-22 02:07:15,959 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:16,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10747 states. [2021-05-22 02:07:16,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10747 to 5145. [2021-05-22 02:07:16,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.749805598755832) internal successors, (24433), 5144 states have internal predecessors, (24433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:16,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24433 transitions. [2021-05-22 02:07:16,194 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24433 transitions. Word has length 29 [2021-05-22 02:07:16,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:16,194 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24433 transitions. [2021-05-22 02:07:16,194 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:16,194 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24433 transitions. [2021-05-22 02:07:16,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:16,202 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:16,202 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:16,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1182 [2021-05-22 02:07:16,202 INFO L430 AbstractCegarLoop]: === Iteration 1184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:16,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:16,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1312834179, now seen corresponding path program 1179 times [2021-05-22 02:07:16,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:16,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326202328] [2021-05-22 02:07:16,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:16,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:16,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326202328] [2021-05-22 02:07:16,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326202328] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:16,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:16,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:16,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86261516] [2021-05-22 02:07:16,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:16,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:16,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:16,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:16,314 INFO L87 Difference]: Start difference. First operand 5145 states and 24433 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:16,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:16,404 INFO L93 Difference]: Finished difference Result 11459 states and 51217 transitions. [2021-05-22 02:07:16,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:16,404 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:16,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:16,432 INFO L225 Difference]: With dead ends: 11459 [2021-05-22 02:07:16,432 INFO L226 Difference]: Without dead ends: 10917 [2021-05-22 02:07:16,432 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:16,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10917 states. [2021-05-22 02:07:16,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10917 to 5255. [2021-05-22 02:07:16,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5255 states, 5254 states have (on average 4.727445755614769) internal successors, (24838), 5254 states have internal predecessors, (24838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:16,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 24838 transitions. [2021-05-22 02:07:16,674 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 24838 transitions. Word has length 29 [2021-05-22 02:07:16,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:16,674 INFO L482 AbstractCegarLoop]: Abstraction has 5255 states and 24838 transitions. [2021-05-22 02:07:16,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:16,674 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 24838 transitions. [2021-05-22 02:07:16,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:16,683 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:16,683 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:16,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1183 [2021-05-22 02:07:16,683 INFO L430 AbstractCegarLoop]: === Iteration 1185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:16,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:16,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1663282685, now seen corresponding path program 1180 times [2021-05-22 02:07:16,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:16,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469632165] [2021-05-22 02:07:16,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:16,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:16,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469632165] [2021-05-22 02:07:16,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469632165] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:16,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:16,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:16,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550801425] [2021-05-22 02:07:16,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:16,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:16,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:16,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:16,785 INFO L87 Difference]: Start difference. First operand 5255 states and 24838 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:16,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:16,890 INFO L93 Difference]: Finished difference Result 11392 states and 50844 transitions. [2021-05-22 02:07:16,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:16,890 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:16,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:16,918 INFO L225 Difference]: With dead ends: 11392 [2021-05-22 02:07:16,918 INFO L226 Difference]: Without dead ends: 10807 [2021-05-22 02:07:16,918 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:17,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10807 states. [2021-05-22 02:07:17,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10807 to 5145. [2021-05-22 02:07:17,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.742029548989113) internal successors, (24393), 5144 states have internal predecessors, (24393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:17,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24393 transitions. [2021-05-22 02:07:17,156 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24393 transitions. Word has length 29 [2021-05-22 02:07:17,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:17,157 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24393 transitions. [2021-05-22 02:07:17,157 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:17,157 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24393 transitions. [2021-05-22 02:07:17,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:17,165 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:17,165 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:17,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1184 [2021-05-22 02:07:17,165 INFO L430 AbstractCegarLoop]: === Iteration 1186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:17,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:17,166 INFO L82 PathProgramCache]: Analyzing trace with hash -280089115, now seen corresponding path program 1181 times [2021-05-22 02:07:17,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:17,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306928703] [2021-05-22 02:07:17,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:17,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:17,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:17,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306928703] [2021-05-22 02:07:17,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306928703] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:17,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:17,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:17,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937558923] [2021-05-22 02:07:17,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:17,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:17,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:17,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:17,280 INFO L87 Difference]: Start difference. First operand 5145 states and 24393 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:17,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:17,374 INFO L93 Difference]: Finished difference Result 11143 states and 49832 transitions. [2021-05-22 02:07:17,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:17,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:17,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:17,401 INFO L225 Difference]: With dead ends: 11143 [2021-05-22 02:07:17,401 INFO L226 Difference]: Without dead ends: 10728 [2021-05-22 02:07:17,401 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:17,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10728 states. [2021-05-22 02:07:17,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10728 to 5193. [2021-05-22 02:07:17,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5193 states, 5192 states have (on average 4.7320878274268106) internal successors, (24569), 5192 states have internal predecessors, (24569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:17,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 24569 transitions. [2021-05-22 02:07:17,636 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 24569 transitions. Word has length 29 [2021-05-22 02:07:17,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:17,636 INFO L482 AbstractCegarLoop]: Abstraction has 5193 states and 24569 transitions. [2021-05-22 02:07:17,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:17,636 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 24569 transitions. [2021-05-22 02:07:17,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:17,644 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:17,644 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:17,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1185 [2021-05-22 02:07:17,645 INFO L430 AbstractCegarLoop]: === Iteration 1187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:17,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:17,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1126886077, now seen corresponding path program 1182 times [2021-05-22 02:07:17,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:17,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990048139] [2021-05-22 02:07:17,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:17,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:17,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990048139] [2021-05-22 02:07:17,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990048139] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:17,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:17,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:17,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231085488] [2021-05-22 02:07:17,758 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:17,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:17,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:17,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:17,758 INFO L87 Difference]: Start difference. First operand 5193 states and 24569 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:17,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:17,865 INFO L93 Difference]: Finished difference Result 11203 states and 50048 transitions. [2021-05-22 02:07:17,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:17,865 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:17,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:17,892 INFO L225 Difference]: With dead ends: 11203 [2021-05-22 02:07:17,892 INFO L226 Difference]: Without dead ends: 10640 [2021-05-22 02:07:17,892 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:18,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10640 states. [2021-05-22 02:07:18,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10640 to 5105. [2021-05-22 02:07:18,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.750979623824452) internal successors, (24249), 5104 states have internal predecessors, (24249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:18,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24249 transitions. [2021-05-22 02:07:18,125 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24249 transitions. Word has length 29 [2021-05-22 02:07:18,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:18,125 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24249 transitions. [2021-05-22 02:07:18,125 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:18,125 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24249 transitions. [2021-05-22 02:07:18,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:18,133 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:18,134 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:18,134 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1186 [2021-05-22 02:07:18,134 INFO L430 AbstractCegarLoop]: === Iteration 1188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:18,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:18,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1100113533, now seen corresponding path program 1183 times [2021-05-22 02:07:18,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:18,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605040322] [2021-05-22 02:07:18,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:18,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:18,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:18,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605040322] [2021-05-22 02:07:18,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605040322] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:18,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:18,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:18,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332212839] [2021-05-22 02:07:18,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:18,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:18,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:18,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:18,244 INFO L87 Difference]: Start difference. First operand 5105 states and 24249 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:18,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:18,334 INFO L93 Difference]: Finished difference Result 11271 states and 50395 transitions. [2021-05-22 02:07:18,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:18,334 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:18,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:18,361 INFO L225 Difference]: With dead ends: 11271 [2021-05-22 02:07:18,361 INFO L226 Difference]: Without dead ends: 10729 [2021-05-22 02:07:18,362 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:18,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10729 states. [2021-05-22 02:07:18,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10729 to 5225. [2021-05-22 02:07:18,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 4.736026033690658) internal successors, (24741), 5224 states have internal predecessors, (24741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:18,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 24741 transitions. [2021-05-22 02:07:18,597 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 24741 transitions. Word has length 29 [2021-05-22 02:07:18,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:18,598 INFO L482 AbstractCegarLoop]: Abstraction has 5225 states and 24741 transitions. [2021-05-22 02:07:18,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:18,598 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 24741 transitions. [2021-05-22 02:07:18,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:18,606 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:18,606 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:18,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1187 [2021-05-22 02:07:18,606 INFO L430 AbstractCegarLoop]: === Iteration 1189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:18,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:18,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1306921499, now seen corresponding path program 1184 times [2021-05-22 02:07:18,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:18,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73756960] [2021-05-22 02:07:18,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:18,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:18,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:18,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73756960] [2021-05-22 02:07:18,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73756960] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:18,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:18,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:18,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153333460] [2021-05-22 02:07:18,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:18,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:18,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:18,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:18,719 INFO L87 Difference]: Start difference. First operand 5225 states and 24741 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:18,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:18,808 INFO L93 Difference]: Finished difference Result 11144 states and 49788 transitions. [2021-05-22 02:07:18,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:18,809 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:18,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:18,835 INFO L225 Difference]: With dead ends: 11144 [2021-05-22 02:07:18,836 INFO L226 Difference]: Without dead ends: 10649 [2021-05-22 02:07:18,836 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:18,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10649 states. [2021-05-22 02:07:19,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10649 to 5145. [2021-05-22 02:07:19,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.745917573872473) internal successors, (24413), 5144 states have internal predecessors, (24413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:19,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24413 transitions. [2021-05-22 02:07:19,068 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24413 transitions. Word has length 29 [2021-05-22 02:07:19,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:19,069 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24413 transitions. [2021-05-22 02:07:19,069 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:19,069 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24413 transitions. [2021-05-22 02:07:19,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:19,077 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:19,077 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:19,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1188 [2021-05-22 02:07:19,077 INFO L430 AbstractCegarLoop]: === Iteration 1190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:19,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:19,077 INFO L82 PathProgramCache]: Analyzing trace with hash -710151805, now seen corresponding path program 1185 times [2021-05-22 02:07:19,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:19,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333947792] [2021-05-22 02:07:19,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:19,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:19,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333947792] [2021-05-22 02:07:19,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333947792] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:19,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:19,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:19,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646074397] [2021-05-22 02:07:19,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:19,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:19,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:19,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:19,189 INFO L87 Difference]: Start difference. First operand 5145 states and 24413 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:19,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:19,289 INFO L93 Difference]: Finished difference Result 11120 states and 49776 transitions. [2021-05-22 02:07:19,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:19,289 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:19,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:19,317 INFO L225 Difference]: With dead ends: 11120 [2021-05-22 02:07:19,317 INFO L226 Difference]: Without dead ends: 10578 [2021-05-22 02:07:19,317 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:19,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10578 states. [2021-05-22 02:07:19,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10578 to 5249. [2021-05-22 02:07:19,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5249 states, 5248 states have (on average 4.725800304878049) internal successors, (24801), 5248 states have internal predecessors, (24801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:19,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5249 states to 5249 states and 24801 transitions. [2021-05-22 02:07:19,559 INFO L78 Accepts]: Start accepts. Automaton has 5249 states and 24801 transitions. Word has length 29 [2021-05-22 02:07:19,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:19,559 INFO L482 AbstractCegarLoop]: Abstraction has 5249 states and 24801 transitions. [2021-05-22 02:07:19,559 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:19,559 INFO L276 IsEmpty]: Start isEmpty. Operand 5249 states and 24801 transitions. [2021-05-22 02:07:19,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:19,568 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:19,568 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:19,568 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1189 [2021-05-22 02:07:19,568 INFO L430 AbstractCegarLoop]: === Iteration 1191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:19,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:19,568 INFO L82 PathProgramCache]: Analyzing trace with hash -210640637, now seen corresponding path program 1186 times [2021-05-22 02:07:19,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:19,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014781303] [2021-05-22 02:07:19,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:19,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:19,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014781303] [2021-05-22 02:07:19,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014781303] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:19,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:19,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:19,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316468434] [2021-05-22 02:07:19,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:19,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:19,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:19,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:19,682 INFO L87 Difference]: Start difference. First operand 5249 states and 24801 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:19,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:19,787 INFO L93 Difference]: Finished difference Result 10721 states and 48184 transitions. [2021-05-22 02:07:19,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:19,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:19,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:19,813 INFO L225 Difference]: With dead ends: 10721 [2021-05-22 02:07:19,813 INFO L226 Difference]: Without dead ends: 10154 [2021-05-22 02:07:19,814 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:19,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10154 states. [2021-05-22 02:07:20,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10154 to 5145. [2021-05-22 02:07:20,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.738141524105754) internal successors, (24373), 5144 states have internal predecessors, (24373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:20,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24373 transitions. [2021-05-22 02:07:20,042 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24373 transitions. Word has length 29 [2021-05-22 02:07:20,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:20,042 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24373 transitions. [2021-05-22 02:07:20,042 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:20,042 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24373 transitions. [2021-05-22 02:07:20,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:20,050 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:20,050 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:20,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1190 [2021-05-22 02:07:20,051 INFO L430 AbstractCegarLoop]: === Iteration 1192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:20,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:20,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1991892197, now seen corresponding path program 1187 times [2021-05-22 02:07:20,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:20,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951901761] [2021-05-22 02:07:20,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:20,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:20,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951901761] [2021-05-22 02:07:20,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951901761] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:20,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:20,155 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:20,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304277595] [2021-05-22 02:07:20,155 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:20,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:20,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:20,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:20,156 INFO L87 Difference]: Start difference. First operand 5145 states and 24373 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:20,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:20,249 INFO L93 Difference]: Finished difference Result 10937 states and 48941 transitions. [2021-05-22 02:07:20,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:20,250 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:20,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:20,276 INFO L225 Difference]: With dead ends: 10937 [2021-05-22 02:07:20,276 INFO L226 Difference]: Without dead ends: 10522 [2021-05-22 02:07:20,276 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 111.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:20,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10522 states. [2021-05-22 02:07:20,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10522 to 5193. [2021-05-22 02:07:20,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5193 states, 5192 states have (on average 4.728235747303544) internal successors, (24549), 5192 states have internal predecessors, (24549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:20,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 24549 transitions. [2021-05-22 02:07:20,510 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 24549 transitions. Word has length 29 [2021-05-22 02:07:20,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:20,510 INFO L482 AbstractCegarLoop]: Abstraction has 5193 states and 24549 transitions. [2021-05-22 02:07:20,510 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:20,510 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 24549 transitions. [2021-05-22 02:07:20,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:20,519 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:20,519 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:20,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1191 [2021-05-22 02:07:20,519 INFO L430 AbstractCegarLoop]: === Iteration 1193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:20,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:20,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1393470141, now seen corresponding path program 1188 times [2021-05-22 02:07:20,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:20,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084549026] [2021-05-22 02:07:20,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:20,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:20,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084549026] [2021-05-22 02:07:20,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084549026] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:20,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:20,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:20,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192550760] [2021-05-22 02:07:20,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:20,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:20,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:20,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:20,625 INFO L87 Difference]: Start difference. First operand 5193 states and 24549 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:20,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:20,745 INFO L93 Difference]: Finished difference Result 10665 states and 47932 transitions. [2021-05-22 02:07:20,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:20,745 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:20,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:20,771 INFO L225 Difference]: With dead ends: 10665 [2021-05-22 02:07:20,771 INFO L226 Difference]: Without dead ends: 10114 [2021-05-22 02:07:20,771 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:20,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10114 states. [2021-05-22 02:07:20,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10114 to 5105. [2021-05-22 02:07:20,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.747061128526646) internal successors, (24229), 5104 states have internal predecessors, (24229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:21,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24229 transitions. [2021-05-22 02:07:21,001 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24229 transitions. Word has length 29 [2021-05-22 02:07:21,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:21,001 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24229 transitions. [2021-05-22 02:07:21,001 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:21,001 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24229 transitions. [2021-05-22 02:07:21,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:21,009 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:21,009 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:21,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1192 [2021-05-22 02:07:21,009 INFO L430 AbstractCegarLoop]: === Iteration 1194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:21,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:21,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1889499803, now seen corresponding path program 1189 times [2021-05-22 02:07:21,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:21,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500442797] [2021-05-22 02:07:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:21,106 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:21,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500442797] [2021-05-22 02:07:21,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500442797] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:21,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:21,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:21,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499012094] [2021-05-22 02:07:21,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:21,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:21,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:21,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:21,106 INFO L87 Difference]: Start difference. First operand 5105 states and 24229 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:21,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:21,201 INFO L93 Difference]: Finished difference Result 11457 states and 51242 transitions. [2021-05-22 02:07:21,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:21,201 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:21,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:21,229 INFO L225 Difference]: With dead ends: 11457 [2021-05-22 02:07:21,229 INFO L226 Difference]: Without dead ends: 10915 [2021-05-22 02:07:21,229 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 103.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:21,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10915 states. [2021-05-22 02:07:21,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10915 to 5267. [2021-05-22 02:07:21,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5267 states, 5266 states have (on average 4.729586023547284) internal successors, (24906), 5266 states have internal predecessors, (24906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:21,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5267 states to 5267 states and 24906 transitions. [2021-05-22 02:07:21,471 INFO L78 Accepts]: Start accepts. Automaton has 5267 states and 24906 transitions. Word has length 29 [2021-05-22 02:07:21,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:21,471 INFO L482 AbstractCegarLoop]: Abstraction has 5267 states and 24906 transitions. [2021-05-22 02:07:21,471 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:21,472 INFO L276 IsEmpty]: Start isEmpty. Operand 5267 states and 24906 transitions. [2021-05-22 02:07:21,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:21,480 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:21,480 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:21,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1193 [2021-05-22 02:07:21,480 INFO L430 AbstractCegarLoop]: === Iteration 1195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:21,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:21,480 INFO L82 PathProgramCache]: Analyzing trace with hash -570649371, now seen corresponding path program 1190 times [2021-05-22 02:07:21,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:21,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189311250] [2021-05-22 02:07:21,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:21,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:21,578 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:21,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189311250] [2021-05-22 02:07:21,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189311250] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:21,578 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:21,578 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:21,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975142120] [2021-05-22 02:07:21,579 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:21,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:21,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:21,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:21,579 INFO L87 Difference]: Start difference. First operand 5267 states and 24906 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:21,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:21,683 INFO L93 Difference]: Finished difference Result 11390 states and 50869 transitions. [2021-05-22 02:07:21,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:21,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:21,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:21,710 INFO L225 Difference]: With dead ends: 11390 [2021-05-22 02:07:21,710 INFO L226 Difference]: Without dead ends: 10805 [2021-05-22 02:07:21,711 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:21,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10805 states. [2021-05-22 02:07:21,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10805 to 5157. [2021-05-22 02:07:21,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 4.741854150504267) internal successors, (24449), 5156 states have internal predecessors, (24449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:21,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 24449 transitions. [2021-05-22 02:07:21,988 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 24449 transitions. Word has length 29 [2021-05-22 02:07:21,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:21,988 INFO L482 AbstractCegarLoop]: Abstraction has 5157 states and 24449 transitions. [2021-05-22 02:07:21,988 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:21,988 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 24449 transitions. [2021-05-22 02:07:21,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:21,996 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:21,996 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:21,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1194 [2021-05-22 02:07:21,996 INFO L430 AbstractCegarLoop]: === Iteration 1196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:21,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:21,997 INFO L82 PathProgramCache]: Analyzing trace with hash 372454851, now seen corresponding path program 1191 times [2021-05-22 02:07:21,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:21,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196976184] [2021-05-22 02:07:21,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:22,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:22,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196976184] [2021-05-22 02:07:22,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196976184] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:22,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:22,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:22,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238266055] [2021-05-22 02:07:22,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:22,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:22,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:22,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:22,102 INFO L87 Difference]: Start difference. First operand 5157 states and 24449 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:22,197 INFO L93 Difference]: Finished difference Result 11216 states and 50200 transitions. [2021-05-22 02:07:22,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:22,197 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:22,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:22,224 INFO L225 Difference]: With dead ends: 11216 [2021-05-22 02:07:22,224 INFO L226 Difference]: Without dead ends: 10674 [2021-05-22 02:07:22,224 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 111.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:22,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10674 states. [2021-05-22 02:07:22,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10674 to 5261. [2021-05-22 02:07:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 4.721863117870722) internal successors, (24837), 5260 states have internal predecessors, (24837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 24837 transitions. [2021-05-22 02:07:22,461 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 24837 transitions. Word has length 29 [2021-05-22 02:07:22,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:22,461 INFO L482 AbstractCegarLoop]: Abstraction has 5261 states and 24837 transitions. [2021-05-22 02:07:22,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 24837 transitions. [2021-05-22 02:07:22,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:22,470 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:22,470 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:22,470 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1195 [2021-05-22 02:07:22,470 INFO L430 AbstractCegarLoop]: === Iteration 1197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:22,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:22,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1498961125, now seen corresponding path program 1192 times [2021-05-22 02:07:22,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:22,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645800333] [2021-05-22 02:07:22,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:22,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:22,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:22,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645800333] [2021-05-22 02:07:22,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645800333] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:22,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:22,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:22,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070445851] [2021-05-22 02:07:22,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:22,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:22,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:22,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:22,578 INFO L87 Difference]: Start difference. First operand 5261 states and 24837 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:22,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:22,686 INFO L93 Difference]: Finished difference Result 10817 states and 48608 transitions. [2021-05-22 02:07:22,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:22,686 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:22,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:22,712 INFO L225 Difference]: With dead ends: 10817 [2021-05-22 02:07:22,713 INFO L226 Difference]: Without dead ends: 10250 [2021-05-22 02:07:22,713 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:22,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10250 states. [2021-05-22 02:07:22,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10250 to 5157. [2021-05-22 02:07:22,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 5156 states have (on average 4.7317688130333595) internal successors, (24397), 5156 states have internal predecessors, (24397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:22,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 24397 transitions. [2021-05-22 02:07:22,952 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 24397 transitions. Word has length 29 [2021-05-22 02:07:22,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:22,953 INFO L482 AbstractCegarLoop]: Abstraction has 5157 states and 24397 transitions. [2021-05-22 02:07:22,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:22,953 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 24397 transitions. [2021-05-22 02:07:22,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:22,961 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:22,962 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:22,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1196 [2021-05-22 02:07:22,962 INFO L430 AbstractCegarLoop]: === Iteration 1198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:22,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:22,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1576754075, now seen corresponding path program 1193 times [2021-05-22 02:07:22,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:22,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337341301] [2021-05-22 02:07:22,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:23,058 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:23,058 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337341301] [2021-05-22 02:07:23,058 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337341301] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:23,058 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:23,058 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:23,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887798753] [2021-05-22 02:07:23,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:23,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:23,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:23,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:23,058 INFO L87 Difference]: Start difference. First operand 5157 states and 24397 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:23,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:23,171 INFO L93 Difference]: Finished difference Result 11117 states and 49741 transitions. [2021-05-22 02:07:23,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:23,172 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:23,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:23,198 INFO L225 Difference]: With dead ends: 11117 [2021-05-22 02:07:23,198 INFO L226 Difference]: Without dead ends: 10642 [2021-05-22 02:07:23,198 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:23,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10642 states. [2021-05-22 02:07:23,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10642 to 5229. [2021-05-22 02:07:23,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5229 states, 5228 states have (on average 4.719395562356541) internal successors, (24673), 5228 states have internal predecessors, (24673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:23,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5229 states to 5229 states and 24673 transitions. [2021-05-22 02:07:23,432 INFO L78 Accepts]: Start accepts. Automaton has 5229 states and 24673 transitions. Word has length 29 [2021-05-22 02:07:23,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:23,432 INFO L482 AbstractCegarLoop]: Abstraction has 5229 states and 24673 transitions. [2021-05-22 02:07:23,432 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:23,432 INFO L276 IsEmpty]: Start isEmpty. Operand 5229 states and 24673 transitions. [2021-05-22 02:07:23,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:23,440 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:23,440 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:23,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1197 [2021-05-22 02:07:23,441 INFO L430 AbstractCegarLoop]: === Iteration 1199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:23,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:23,441 INFO L82 PathProgramCache]: Analyzing trace with hash 602133571, now seen corresponding path program 1194 times [2021-05-22 02:07:23,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:23,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383799025] [2021-05-22 02:07:23,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:23,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:23,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:23,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383799025] [2021-05-22 02:07:23,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383799025] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:23,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:23,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:23,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940061439] [2021-05-22 02:07:23,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:23,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:23,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:23,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:23,535 INFO L87 Difference]: Start difference. First operand 5229 states and 24673 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:23,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:23,642 INFO L93 Difference]: Finished difference Result 10785 states and 48444 transitions. [2021-05-22 02:07:23,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:23,642 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:23,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:23,668 INFO L225 Difference]: With dead ends: 10785 [2021-05-22 02:07:23,668 INFO L226 Difference]: Without dead ends: 10198 [2021-05-22 02:07:23,668 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:23,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10198 states. [2021-05-22 02:07:23,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10198 to 5105. [2021-05-22 02:07:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.74314263322884) internal successors, (24209), 5104 states have internal predecessors, (24209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:23,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24209 transitions. [2021-05-22 02:07:23,895 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24209 transitions. Word has length 29 [2021-05-22 02:07:23,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:23,895 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24209 transitions. [2021-05-22 02:07:23,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:23,895 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24209 transitions. [2021-05-22 02:07:23,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:23,903 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:23,903 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:23,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1198 [2021-05-22 02:07:23,903 INFO L430 AbstractCegarLoop]: === Iteration 1200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:23,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:23,904 INFO L82 PathProgramCache]: Analyzing trace with hash 195575751, now seen corresponding path program 1195 times [2021-05-22 02:07:23,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:23,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41955361] [2021-05-22 02:07:23,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:24,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:24,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41955361] [2021-05-22 02:07:24,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41955361] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:24,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:24,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:24,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845829444] [2021-05-22 02:07:24,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:24,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:24,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:24,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:24,009 INFO L87 Difference]: Start difference. First operand 5105 states and 24209 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:24,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:24,104 INFO L93 Difference]: Finished difference Result 10930 states and 48934 transitions. [2021-05-22 02:07:24,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:24,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:24,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:24,130 INFO L225 Difference]: With dead ends: 10930 [2021-05-22 02:07:24,130 INFO L226 Difference]: Without dead ends: 10515 [2021-05-22 02:07:24,130 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 111.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:24,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10515 states. [2021-05-22 02:07:24,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10515 to 5177. [2021-05-22 02:07:24,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5177 states, 5176 states have (on average 4.735123647604327) internal successors, (24509), 5176 states have internal predecessors, (24509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:24,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5177 states to 5177 states and 24509 transitions. [2021-05-22 02:07:24,361 INFO L78 Accepts]: Start accepts. Automaton has 5177 states and 24509 transitions. Word has length 29 [2021-05-22 02:07:24,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:24,362 INFO L482 AbstractCegarLoop]: Abstraction has 5177 states and 24509 transitions. [2021-05-22 02:07:24,362 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:24,362 INFO L276 IsEmpty]: Start isEmpty. Operand 5177 states and 24509 transitions. [2021-05-22 02:07:24,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:24,370 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:24,370 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:24,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1199 [2021-05-22 02:07:24,370 INFO L430 AbstractCegarLoop]: === Iteration 1201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:24,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:24,370 INFO L82 PathProgramCache]: Analyzing trace with hash -651221211, now seen corresponding path program 1196 times [2021-05-22 02:07:24,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:24,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027637254] [2021-05-22 02:07:24,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:24,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:24,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:24,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027637254] [2021-05-22 02:07:24,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027637254] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:24,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:24,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:24,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448273130] [2021-05-22 02:07:24,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:24,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:24,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:24,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:24,475 INFO L87 Difference]: Start difference. First operand 5177 states and 24509 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:24,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:24,592 INFO L93 Difference]: Finished difference Result 10990 states and 49150 transitions. [2021-05-22 02:07:24,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:24,593 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:24,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:24,619 INFO L225 Difference]: With dead ends: 10990 [2021-05-22 02:07:24,619 INFO L226 Difference]: Without dead ends: 10467 [2021-05-22 02:07:24,619 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:24,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10467 states. [2021-05-22 02:07:24,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10467 to 5129. [2021-05-22 02:07:24,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.7404446177847115) internal successors, (24309), 5128 states have internal predecessors, (24309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:24,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24309 transitions. [2021-05-22 02:07:24,855 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24309 transitions. Word has length 29 [2021-05-22 02:07:24,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:24,855 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24309 transitions. [2021-05-22 02:07:24,855 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:24,855 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24309 transitions. [2021-05-22 02:07:24,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:24,864 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:24,864 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:24,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1200 [2021-05-22 02:07:24,864 INFO L430 AbstractCegarLoop]: === Iteration 1202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:24,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:24,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1837436891, now seen corresponding path program 1197 times [2021-05-22 02:07:24,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:24,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43841255] [2021-05-22 02:07:24,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:24,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:24,960 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:24,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43841255] [2021-05-22 02:07:24,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43841255] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:24,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:24,960 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:24,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369666457] [2021-05-22 02:07:24,960 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:24,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:24,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:24,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:24,960 INFO L87 Difference]: Start difference. First operand 5129 states and 24309 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:25,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:25,056 INFO L93 Difference]: Finished difference Result 10822 states and 48470 transitions. [2021-05-22 02:07:25,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:25,057 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:25,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:25,083 INFO L225 Difference]: With dead ends: 10822 [2021-05-22 02:07:25,083 INFO L226 Difference]: Without dead ends: 10407 [2021-05-22 02:07:25,084 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 103.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:25,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10407 states. [2021-05-22 02:07:25,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10407 to 5177. [2021-05-22 02:07:25,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5177 states, 5176 states have (on average 4.73048686244204) internal successors, (24485), 5176 states have internal predecessors, (24485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:25,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5177 states to 5177 states and 24485 transitions. [2021-05-22 02:07:25,314 INFO L78 Accepts]: Start accepts. Automaton has 5177 states and 24485 transitions. Word has length 29 [2021-05-22 02:07:25,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:25,315 INFO L482 AbstractCegarLoop]: Abstraction has 5177 states and 24485 transitions. [2021-05-22 02:07:25,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 5177 states and 24485 transitions. [2021-05-22 02:07:25,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:25,323 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:25,323 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:25,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1201 [2021-05-22 02:07:25,323 INFO L430 AbstractCegarLoop]: === Iteration 1203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:25,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:25,324 INFO L82 PathProgramCache]: Analyzing trace with hash -300836827, now seen corresponding path program 1198 times [2021-05-22 02:07:25,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:25,324 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031670150] [2021-05-22 02:07:25,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:25,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:25,418 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:25,418 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031670150] [2021-05-22 02:07:25,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031670150] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:25,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:25,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:25,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724854833] [2021-05-22 02:07:25,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:25,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:25,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:25,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:25,418 INFO L87 Difference]: Start difference. First operand 5177 states and 24485 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:25,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:25,532 INFO L93 Difference]: Finished difference Result 10550 states and 47461 transitions. [2021-05-22 02:07:25,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:25,533 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:25,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:25,558 INFO L225 Difference]: With dead ends: 10550 [2021-05-22 02:07:25,559 INFO L226 Difference]: Without dead ends: 10039 [2021-05-22 02:07:25,559 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:25,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10039 states. [2021-05-22 02:07:25,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10039 to 5129. [2021-05-22 02:07:25,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.735764430577223) internal successors, (24285), 5128 states have internal predecessors, (24285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:25,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24285 transitions. [2021-05-22 02:07:25,786 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24285 transitions. Word has length 29 [2021-05-22 02:07:25,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:25,786 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24285 transitions. [2021-05-22 02:07:25,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:25,786 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24285 transitions. [2021-05-22 02:07:25,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:25,794 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:25,794 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:25,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1202 [2021-05-22 02:07:25,795 INFO L430 AbstractCegarLoop]: === Iteration 1204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:25,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:25,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1600782339, now seen corresponding path program 1199 times [2021-05-22 02:07:25,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:25,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770265836] [2021-05-22 02:07:25,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:25,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:25,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770265836] [2021-05-22 02:07:25,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770265836] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:25,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:25,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:25,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85065898] [2021-05-22 02:07:25,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:25,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:25,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:25,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:25,889 INFO L87 Difference]: Start difference. First operand 5129 states and 24285 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:26,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:26,010 INFO L93 Difference]: Finished difference Result 10906 states and 48834 transitions. [2021-05-22 02:07:26,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:26,010 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:26,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:26,037 INFO L225 Difference]: With dead ends: 10906 [2021-05-22 02:07:26,038 INFO L226 Difference]: Without dead ends: 10431 [2021-05-22 02:07:26,038 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:26,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10431 states. [2021-05-22 02:07:26,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10431 to 5201. [2021-05-22 02:07:26,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 4.7232692307692306) internal successors, (24561), 5200 states have internal predecessors, (24561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:26,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 24561 transitions. [2021-05-22 02:07:26,269 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 24561 transitions. Word has length 29 [2021-05-22 02:07:26,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:26,269 INFO L482 AbstractCegarLoop]: Abstraction has 5201 states and 24561 transitions. [2021-05-22 02:07:26,270 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:26,270 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 24561 transitions. [2021-05-22 02:07:26,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:26,278 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:26,278 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:26,278 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1203 [2021-05-22 02:07:26,278 INFO L430 AbstractCegarLoop]: === Iteration 1205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:26,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:26,278 INFO L82 PathProgramCache]: Analyzing trace with hash 426822629, now seen corresponding path program 1200 times [2021-05-22 02:07:26,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:26,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794164272] [2021-05-22 02:07:26,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:26,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:26,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794164272] [2021-05-22 02:07:26,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794164272] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:26,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:26,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:26,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145889474] [2021-05-22 02:07:26,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:26,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:26,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:26,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:26,375 INFO L87 Difference]: Start difference. First operand 5201 states and 24561 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:26,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:26,499 INFO L93 Difference]: Finished difference Result 10574 states and 47537 transitions. [2021-05-22 02:07:26,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:26,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:26,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:26,525 INFO L225 Difference]: With dead ends: 10574 [2021-05-22 02:07:26,525 INFO L226 Difference]: Without dead ends: 9987 [2021-05-22 02:07:26,525 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:26,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9987 states. [2021-05-22 02:07:26,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9987 to 5077. [2021-05-22 02:07:26,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5077 states, 5076 states have (on average 4.754334121355398) internal successors, (24133), 5076 states have internal predecessors, (24133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5077 states to 5077 states and 24133 transitions. [2021-05-22 02:07:26,765 INFO L78 Accepts]: Start accepts. Automaton has 5077 states and 24133 transitions. Word has length 29 [2021-05-22 02:07:26,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:26,765 INFO L482 AbstractCegarLoop]: Abstraction has 5077 states and 24133 transitions. [2021-05-22 02:07:26,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:26,765 INFO L276 IsEmpty]: Start isEmpty. Operand 5077 states and 24133 transitions. [2021-05-22 02:07:26,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:26,774 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:26,774 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:26,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1204 [2021-05-22 02:07:26,774 INFO L430 AbstractCegarLoop]: === Iteration 1206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:26,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:26,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1747416165, now seen corresponding path program 1201 times [2021-05-22 02:07:26,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:26,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573494238] [2021-05-22 02:07:26,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:26,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:26,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573494238] [2021-05-22 02:07:26,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573494238] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:26,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:26,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:26,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206276737] [2021-05-22 02:07:26,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:26,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:26,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:26,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:26,893 INFO L87 Difference]: Start difference. First operand 5077 states and 24133 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:27,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:27,018 INFO L93 Difference]: Finished difference Result 10248 states and 45808 transitions. [2021-05-22 02:07:27,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:27,019 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:27,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:27,044 INFO L225 Difference]: With dead ends: 10248 [2021-05-22 02:07:27,045 INFO L226 Difference]: Without dead ends: 9833 [2021-05-22 02:07:27,045 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:27,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9833 states. [2021-05-22 02:07:27,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9833 to 5153. [2021-05-22 02:07:27,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.74708850931677) internal successors, (24457), 5152 states have internal predecessors, (24457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:27,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24457 transitions. [2021-05-22 02:07:27,273 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24457 transitions. Word has length 29 [2021-05-22 02:07:27,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:27,273 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24457 transitions. [2021-05-22 02:07:27,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:27,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24457 transitions. [2021-05-22 02:07:27,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:27,282 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:27,282 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:27,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1205 [2021-05-22 02:07:27,282 INFO L430 AbstractCegarLoop]: === Iteration 1207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:27,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:27,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1830888185, now seen corresponding path program 1202 times [2021-05-22 02:07:27,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:27,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807423940] [2021-05-22 02:07:27,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:27,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:27,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807423940] [2021-05-22 02:07:27,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807423940] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:27,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:27,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:27,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923211965] [2021-05-22 02:07:27,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:27,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:27,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:27,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:27,403 INFO L87 Difference]: Start difference. First operand 5153 states and 24457 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:27,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:27,507 INFO L93 Difference]: Finished difference Result 10310 states and 46029 transitions. [2021-05-22 02:07:27,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:27,508 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:27,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:27,533 INFO L225 Difference]: With dead ends: 10310 [2021-05-22 02:07:27,533 INFO L226 Difference]: Without dead ends: 9785 [2021-05-22 02:07:27,533 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:27,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9785 states. [2021-05-22 02:07:27,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9785 to 5105. [2021-05-22 02:07:27,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.754114420062696) internal successors, (24265), 5104 states have internal predecessors, (24265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:27,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24265 transitions. [2021-05-22 02:07:27,760 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24265 transitions. Word has length 29 [2021-05-22 02:07:27,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:27,761 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24265 transitions. [2021-05-22 02:07:27,761 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:27,761 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24265 transitions. [2021-05-22 02:07:27,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:27,769 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:27,769 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:27,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1206 [2021-05-22 02:07:27,769 INFO L430 AbstractCegarLoop]: === Iteration 1208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:27,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:27,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1266514119, now seen corresponding path program 1203 times [2021-05-22 02:07:27,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:27,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300121275] [2021-05-22 02:07:27,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:27,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:27,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:27,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300121275] [2021-05-22 02:07:27,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300121275] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:27,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:27,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:27,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708855730] [2021-05-22 02:07:27,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:27,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:27,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:27,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:27,880 INFO L87 Difference]: Start difference. First operand 5105 states and 24265 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:27,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:27,990 INFO L93 Difference]: Finished difference Result 10170 states and 45443 transitions. [2021-05-22 02:07:27,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:27,990 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:27,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:28,015 INFO L225 Difference]: With dead ends: 10170 [2021-05-22 02:07:28,016 INFO L226 Difference]: Without dead ends: 9755 [2021-05-22 02:07:28,016 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:28,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9755 states. [2021-05-22 02:07:28,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9755 to 5137. [2021-05-22 02:07:28,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.746300623052959) internal successors, (24377), 5136 states have internal predecessors, (24377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:28,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24377 transitions. [2021-05-22 02:07:28,246 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24377 transitions. Word has length 29 [2021-05-22 02:07:28,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:28,246 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24377 transitions. [2021-05-22 02:07:28,246 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:28,246 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24377 transitions. [2021-05-22 02:07:28,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:28,254 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:28,254 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:28,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1207 [2021-05-22 02:07:28,254 INFO L430 AbstractCegarLoop]: === Iteration 1209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:28,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:28,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1677922115, now seen corresponding path program 1204 times [2021-05-22 02:07:28,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:28,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521478081] [2021-05-22 02:07:28,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:28,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:28,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:28,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521478081] [2021-05-22 02:07:28,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521478081] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:28,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:28,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:28,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436532491] [2021-05-22 02:07:28,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:28,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:28,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:28,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:28,367 INFO L87 Difference]: Start difference. First operand 5137 states and 24377 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:28,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:28,458 INFO L93 Difference]: Finished difference Result 10170 states and 45411 transitions. [2021-05-22 02:07:28,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:28,458 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:28,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:28,483 INFO L225 Difference]: With dead ends: 10170 [2021-05-22 02:07:28,483 INFO L226 Difference]: Without dead ends: 9723 [2021-05-22 02:07:28,483 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:28,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9723 states. [2021-05-22 02:07:28,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9723 to 5105. [2021-05-22 02:07:28,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.750979623824452) internal successors, (24249), 5104 states have internal predecessors, (24249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:28,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24249 transitions. [2021-05-22 02:07:28,709 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24249 transitions. Word has length 29 [2021-05-22 02:07:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:28,709 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24249 transitions. [2021-05-22 02:07:28,709 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:28,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24249 transitions. [2021-05-22 02:07:28,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:28,718 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:28,718 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:28,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1208 [2021-05-22 02:07:28,718 INFO L430 AbstractCegarLoop]: === Iteration 1210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:28,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:28,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1813617603, now seen corresponding path program 1205 times [2021-05-22 02:07:28,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:28,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106150396] [2021-05-22 02:07:28,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:28,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:28,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106150396] [2021-05-22 02:07:28,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106150396] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:28,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:28,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:28,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784415964] [2021-05-22 02:07:28,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:28,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:28,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:28,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:28,839 INFO L87 Difference]: Start difference. First operand 5105 states and 24249 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:28,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:28,945 INFO L93 Difference]: Finished difference Result 10310 states and 46045 transitions. [2021-05-22 02:07:28,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:28,945 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:28,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:28,970 INFO L225 Difference]: With dead ends: 10310 [2021-05-22 02:07:28,970 INFO L226 Difference]: Without dead ends: 9833 [2021-05-22 02:07:28,970 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:29,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9833 states. [2021-05-22 02:07:29,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9833 to 5153. [2021-05-22 02:07:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.740877329192546) internal successors, (24425), 5152 states have internal predecessors, (24425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:29,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24425 transitions. [2021-05-22 02:07:29,197 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24425 transitions. Word has length 29 [2021-05-22 02:07:29,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:29,197 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24425 transitions. [2021-05-22 02:07:29,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:29,197 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24425 transitions. [2021-05-22 02:07:29,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:29,205 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:29,206 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:29,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1209 [2021-05-22 02:07:29,206 INFO L430 AbstractCegarLoop]: === Iteration 1211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:29,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:29,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1400287067, now seen corresponding path program 1206 times [2021-05-22 02:07:29,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:29,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326793174] [2021-05-22 02:07:29,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:29,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:29,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:29,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326793174] [2021-05-22 02:07:29,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326793174] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:29,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:29,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:29,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109678750] [2021-05-22 02:07:29,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:29,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:29,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:29,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:29,326 INFO L87 Difference]: Start difference. First operand 5153 states and 24425 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:29,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:29,422 INFO L93 Difference]: Finished difference Result 10248 states and 45728 transitions. [2021-05-22 02:07:29,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:29,422 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:29,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:29,446 INFO L225 Difference]: With dead ends: 10248 [2021-05-22 02:07:29,447 INFO L226 Difference]: Without dead ends: 9769 [2021-05-22 02:07:29,447 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:29,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9769 states. [2021-05-22 02:07:29,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9769 to 5089. [2021-05-22 02:07:29,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 4.754913522012578) internal successors, (24193), 5088 states have internal predecessors, (24193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:29,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 24193 transitions. [2021-05-22 02:07:29,671 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 24193 transitions. Word has length 29 [2021-05-22 02:07:29,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:29,671 INFO L482 AbstractCegarLoop]: Abstraction has 5089 states and 24193 transitions. [2021-05-22 02:07:29,671 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:29,671 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 24193 transitions. [2021-05-22 02:07:29,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:29,679 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:29,679 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:29,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1210 [2021-05-22 02:07:29,679 INFO L430 AbstractCegarLoop]: === Iteration 1212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:29,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:29,679 INFO L82 PathProgramCache]: Analyzing trace with hash -837949369, now seen corresponding path program 1207 times [2021-05-22 02:07:29,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:29,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457707535] [2021-05-22 02:07:29,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:29,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:29,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457707535] [2021-05-22 02:07:29,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457707535] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:29,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:29,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:29,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138861028] [2021-05-22 02:07:29,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:29,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:29,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:29,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:29,802 INFO L87 Difference]: Start difference. First operand 5089 states and 24193 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:29,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:29,907 INFO L93 Difference]: Finished difference Result 10362 states and 46335 transitions. [2021-05-22 02:07:29,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:29,907 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:29,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:29,932 INFO L225 Difference]: With dead ends: 10362 [2021-05-22 02:07:29,932 INFO L226 Difference]: Without dead ends: 9947 [2021-05-22 02:07:29,932 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:30,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9947 states. [2021-05-22 02:07:30,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9947 to 5161. [2021-05-22 02:07:30,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.7467054263565895) internal successors, (24493), 5160 states have internal predecessors, (24493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:30,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24493 transitions. [2021-05-22 02:07:30,158 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24493 transitions. Word has length 29 [2021-05-22 02:07:30,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:30,158 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24493 transitions. [2021-05-22 02:07:30,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:30,158 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24493 transitions. [2021-05-22 02:07:30,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:30,166 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:30,166 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:30,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1211 [2021-05-22 02:07:30,166 INFO L430 AbstractCegarLoop]: === Iteration 1213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:30,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:30,166 INFO L82 PathProgramCache]: Analyzing trace with hash -121286423, now seen corresponding path program 1208 times [2021-05-22 02:07:30,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:30,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053585526] [2021-05-22 02:07:30,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:30,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:30,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:30,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053585526] [2021-05-22 02:07:30,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053585526] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:30,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:30,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:30,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912716895] [2021-05-22 02:07:30,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:30,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:30,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:30,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:30,289 INFO L87 Difference]: Start difference. First operand 5161 states and 24493 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:30,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:30,394 INFO L93 Difference]: Finished difference Result 10424 states and 46556 transitions. [2021-05-22 02:07:30,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:30,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:30,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:30,420 INFO L225 Difference]: With dead ends: 10424 [2021-05-22 02:07:30,421 INFO L226 Difference]: Without dead ends: 9899 [2021-05-22 02:07:30,421 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:30,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9899 states. [2021-05-22 02:07:30,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9899 to 5113. [2021-05-22 02:07:30,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.752151799687011) internal successors, (24293), 5112 states have internal predecessors, (24293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:30,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24293 transitions. [2021-05-22 02:07:30,645 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24293 transitions. Word has length 29 [2021-05-22 02:07:30,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:30,645 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24293 transitions. [2021-05-22 02:07:30,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:30,645 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24293 transitions. [2021-05-22 02:07:30,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:30,654 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:30,654 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:30,654 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1212 [2021-05-22 02:07:30,654 INFO L430 AbstractCegarLoop]: === Iteration 1214 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:30,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:30,654 INFO L82 PathProgramCache]: Analyzing trace with hash 255021127, now seen corresponding path program 1209 times [2021-05-22 02:07:30,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:30,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901264397] [2021-05-22 02:07:30,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:30,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:30,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:30,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901264397] [2021-05-22 02:07:30,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901264397] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:30,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:30,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:30,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975244791] [2021-05-22 02:07:30,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:30,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:30,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:30,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:30,782 INFO L87 Difference]: Start difference. First operand 5113 states and 24293 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:30,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:30,893 INFO L93 Difference]: Finished difference Result 10360 states and 46306 transitions. [2021-05-22 02:07:30,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:30,893 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:30,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:30,918 INFO L225 Difference]: With dead ends: 10360 [2021-05-22 02:07:30,919 INFO L226 Difference]: Without dead ends: 9945 [2021-05-22 02:07:30,919 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 150.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:31,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9945 states. [2021-05-22 02:07:31,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9945 to 5161. [2021-05-22 02:07:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.742054263565891) internal successors, (24469), 5160 states have internal predecessors, (24469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:31,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24469 transitions. [2021-05-22 02:07:31,145 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24469 transitions. Word has length 29 [2021-05-22 02:07:31,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:31,145 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24469 transitions. [2021-05-22 02:07:31,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:31,145 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24469 transitions. [2021-05-22 02:07:31,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:31,153 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:31,153 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:31,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1213 [2021-05-22 02:07:31,153 INFO L430 AbstractCegarLoop]: === Iteration 1215 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:31,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:31,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1284586503, now seen corresponding path program 1210 times [2021-05-22 02:07:31,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:31,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698782706] [2021-05-22 02:07:31,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:31,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:31,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:31,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698782706] [2021-05-22 02:07:31,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698782706] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:31,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:31,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:31,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67226770] [2021-05-22 02:07:31,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:31,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:31,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:31,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:31,279 INFO L87 Difference]: Start difference. First operand 5161 states and 24469 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:31,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:31,386 INFO L93 Difference]: Finished difference Result 10420 states and 46522 transitions. [2021-05-22 02:07:31,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:31,386 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:31,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:31,411 INFO L225 Difference]: With dead ends: 10420 [2021-05-22 02:07:31,412 INFO L226 Difference]: Without dead ends: 9897 [2021-05-22 02:07:31,412 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:31,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9897 states. [2021-05-22 02:07:31,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9897 to 5113. [2021-05-22 02:07:31,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.747456964006259) internal successors, (24269), 5112 states have internal predecessors, (24269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:31,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24269 transitions. [2021-05-22 02:07:31,637 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24269 transitions. Word has length 29 [2021-05-22 02:07:31,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:31,637 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24269 transitions. [2021-05-22 02:07:31,637 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:31,637 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24269 transitions. [2021-05-22 02:07:31,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:31,646 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:31,646 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:31,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1214 [2021-05-22 02:07:31,646 INFO L430 AbstractCegarLoop]: === Iteration 1216 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:31,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:31,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1458512937, now seen corresponding path program 1211 times [2021-05-22 02:07:31,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:31,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343621685] [2021-05-22 02:07:31,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:31,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:31,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343621685] [2021-05-22 02:07:31,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343621685] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:31,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:31,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:31,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884132562] [2021-05-22 02:07:31,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:31,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:31,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:31,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:31,761 INFO L87 Difference]: Start difference. First operand 5113 states and 24269 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:31,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:31,865 INFO L93 Difference]: Finished difference Result 10514 states and 46967 transitions. [2021-05-22 02:07:31,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:31,865 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:31,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:31,890 INFO L225 Difference]: With dead ends: 10514 [2021-05-22 02:07:31,890 INFO L226 Difference]: Without dead ends: 10037 [2021-05-22 02:07:31,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:32,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10037 states. [2021-05-22 02:07:32,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10037 to 5191. [2021-05-22 02:07:32,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.732562620423892) internal successors, (24562), 5190 states have internal predecessors, (24562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24562 transitions. [2021-05-22 02:07:32,154 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24562 transitions. Word has length 29 [2021-05-22 02:07:32,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:32,154 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24562 transitions. [2021-05-22 02:07:32,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:32,154 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24562 transitions. [2021-05-22 02:07:32,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:32,163 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:32,163 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:32,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1215 [2021-05-22 02:07:32,163 INFO L430 AbstractCegarLoop]: === Iteration 1217 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:32,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:32,163 INFO L82 PathProgramCache]: Analyzing trace with hash 66368391, now seen corresponding path program 1212 times [2021-05-22 02:07:32,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:32,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263057077] [2021-05-22 02:07:32,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:32,276 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:32,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263057077] [2021-05-22 02:07:32,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263057077] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:32,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:32,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:32,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820920278] [2021-05-22 02:07:32,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:32,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:32,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:32,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:32,276 INFO L87 Difference]: Start difference. First operand 5191 states and 24562 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:32,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:32,391 INFO L93 Difference]: Finished difference Result 10512 states and 46884 transitions. [2021-05-22 02:07:32,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:32,391 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:32,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:32,416 INFO L225 Difference]: With dead ends: 10512 [2021-05-22 02:07:32,416 INFO L226 Difference]: Without dead ends: 9935 [2021-05-22 02:07:32,416 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:32,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9935 states. [2021-05-22 02:07:32,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9935 to 5089. [2021-05-22 02:07:32,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 4.753341194968553) internal successors, (24185), 5088 states have internal predecessors, (24185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:32,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 24185 transitions. [2021-05-22 02:07:32,640 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 24185 transitions. Word has length 29 [2021-05-22 02:07:32,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:32,640 INFO L482 AbstractCegarLoop]: Abstraction has 5089 states and 24185 transitions. [2021-05-22 02:07:32,640 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:32,640 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 24185 transitions. [2021-05-22 02:07:32,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:32,648 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:32,648 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:32,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1216 [2021-05-22 02:07:32,648 INFO L430 AbstractCegarLoop]: === Iteration 1218 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:32,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:32,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1627335639, now seen corresponding path program 1213 times [2021-05-22 02:07:32,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:32,648 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290424095] [2021-05-22 02:07:32,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:32,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:32,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:32,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290424095] [2021-05-22 02:07:32,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290424095] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:32,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:32,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:32,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292899272] [2021-05-22 02:07:32,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:32,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:32,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:32,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:32,761 INFO L87 Difference]: Start difference. First operand 5089 states and 24185 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:32,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:32,881 INFO L93 Difference]: Finished difference Result 10168 states and 45438 transitions. [2021-05-22 02:07:32,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:32,882 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:32,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:32,907 INFO L225 Difference]: With dead ends: 10168 [2021-05-22 02:07:32,907 INFO L226 Difference]: Without dead ends: 9753 [2021-05-22 02:07:32,907 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:33,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9753 states. [2021-05-22 02:07:33,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9753 to 5137. [2021-05-22 02:07:33,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.746300623052959) internal successors, (24377), 5136 states have internal predecessors, (24377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:33,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24377 transitions. [2021-05-22 02:07:33,134 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24377 transitions. Word has length 29 [2021-05-22 02:07:33,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:33,134 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24377 transitions. [2021-05-22 02:07:33,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:33,134 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24377 transitions. [2021-05-22 02:07:33,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:33,142 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:33,142 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:33,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1217 [2021-05-22 02:07:33,143 INFO L430 AbstractCegarLoop]: === Iteration 1219 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:33,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:33,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1215927643, now seen corresponding path program 1214 times [2021-05-22 02:07:33,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:33,143 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488143391] [2021-05-22 02:07:33,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:33,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:33,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:33,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488143391] [2021-05-22 02:07:33,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488143391] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:33,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:33,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:33,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896686729] [2021-05-22 02:07:33,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:33,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:33,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:33,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:33,257 INFO L87 Difference]: Start difference. First operand 5137 states and 24377 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:33,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:33,349 INFO L93 Difference]: Finished difference Result 10168 states and 45406 transitions. [2021-05-22 02:07:33,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:33,349 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:33,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:33,374 INFO L225 Difference]: With dead ends: 10168 [2021-05-22 02:07:33,374 INFO L226 Difference]: Without dead ends: 9721 [2021-05-22 02:07:33,374 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:33,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9721 states. [2021-05-22 02:07:33,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9721 to 5105. [2021-05-22 02:07:33,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.750979623824452) internal successors, (24249), 5104 states have internal predecessors, (24249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:33,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24249 transitions. [2021-05-22 02:07:33,639 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24249 transitions. Word has length 29 [2021-05-22 02:07:33,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:33,640 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24249 transitions. [2021-05-22 02:07:33,640 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:33,640 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24249 transitions. [2021-05-22 02:07:33,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:33,650 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:33,650 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:33,650 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1218 [2021-05-22 02:07:33,650 INFO L430 AbstractCegarLoop]: === Iteration 1220 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:33,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:33,651 INFO L82 PathProgramCache]: Analyzing trace with hash 644570119, now seen corresponding path program 1215 times [2021-05-22 02:07:33,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:33,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907274841] [2021-05-22 02:07:33,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:33,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:33,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907274841] [2021-05-22 02:07:33,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907274841] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:33,815 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:33,815 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:33,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981995277] [2021-05-22 02:07:33,815 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:33,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:33,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:33,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:33,815 INFO L87 Difference]: Start difference. First operand 5105 states and 24249 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:33,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:33,922 INFO L93 Difference]: Finished difference Result 10244 states and 45766 transitions. [2021-05-22 02:07:33,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:33,922 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:33,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:33,948 INFO L225 Difference]: With dead ends: 10244 [2021-05-22 02:07:33,948 INFO L226 Difference]: Without dead ends: 9829 [2021-05-22 02:07:33,948 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 180.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:34,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9829 states. [2021-05-22 02:07:34,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9829 to 5153. [2021-05-22 02:07:34,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.740877329192546) internal successors, (24425), 5152 states have internal predecessors, (24425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:34,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24425 transitions. [2021-05-22 02:07:34,173 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24425 transitions. Word has length 29 [2021-05-22 02:07:34,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:34,173 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24425 transitions. [2021-05-22 02:07:34,173 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:34,173 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24425 transitions. [2021-05-22 02:07:34,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:34,182 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:34,182 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:34,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1219 [2021-05-22 02:07:34,182 INFO L430 AbstractCegarLoop]: === Iteration 1221 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:34,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:34,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1300779031, now seen corresponding path program 1216 times [2021-05-22 02:07:34,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:34,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753771159] [2021-05-22 02:07:34,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:34,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:34,307 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753771159] [2021-05-22 02:07:34,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753771159] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:34,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:34,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:34,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437425479] [2021-05-22 02:07:34,307 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:34,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:34,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:34,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:34,308 INFO L87 Difference]: Start difference. First operand 5153 states and 24425 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:34,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:34,417 INFO L93 Difference]: Finished difference Result 10304 states and 45982 transitions. [2021-05-22 02:07:34,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:34,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:34,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:34,442 INFO L225 Difference]: With dead ends: 10304 [2021-05-22 02:07:34,443 INFO L226 Difference]: Without dead ends: 9781 [2021-05-22 02:07:34,443 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:34,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9781 states. [2021-05-22 02:07:34,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9781 to 5105. [2021-05-22 02:07:34,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.747844827586207) internal successors, (24233), 5104 states have internal predecessors, (24233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:34,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24233 transitions. [2021-05-22 02:07:34,668 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24233 transitions. Word has length 29 [2021-05-22 02:07:34,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:34,668 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24233 transitions. [2021-05-22 02:07:34,668 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:34,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24233 transitions. [2021-05-22 02:07:34,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:34,677 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:34,677 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:34,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1220 [2021-05-22 02:07:34,677 INFO L430 AbstractCegarLoop]: === Iteration 1222 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:34,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:34,677 INFO L82 PathProgramCache]: Analyzing trace with hash 910355395, now seen corresponding path program 1217 times [2021-05-22 02:07:34,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:34,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814759693] [2021-05-22 02:07:34,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:34,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:34,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:34,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814759693] [2021-05-22 02:07:34,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814759693] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:34,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:34,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:34,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031014265] [2021-05-22 02:07:34,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:34,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:34,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:34,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:34,801 INFO L87 Difference]: Start difference. First operand 5105 states and 24233 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:34,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:34,886 INFO L93 Difference]: Finished difference Result 10244 states and 45750 transitions. [2021-05-22 02:07:34,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:34,886 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:34,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:34,911 INFO L225 Difference]: With dead ends: 10244 [2021-05-22 02:07:34,911 INFO L226 Difference]: Without dead ends: 9829 [2021-05-22 02:07:34,912 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:35,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9829 states. [2021-05-22 02:07:35,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9829 to 5153. [2021-05-22 02:07:35,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.737771739130435) internal successors, (24409), 5152 states have internal predecessors, (24409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:35,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24409 transitions. [2021-05-22 02:07:35,137 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24409 transitions. Word has length 29 [2021-05-22 02:07:35,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:35,138 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24409 transitions. [2021-05-22 02:07:35,138 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:35,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24409 transitions. [2021-05-22 02:07:35,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:35,146 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:35,146 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:35,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1221 [2021-05-22 02:07:35,146 INFO L430 AbstractCegarLoop]: === Iteration 1223 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:35,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:35,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1991418021, now seen corresponding path program 1218 times [2021-05-22 02:07:35,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:35,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716157173] [2021-05-22 02:07:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:35,269 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:35,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716157173] [2021-05-22 02:07:35,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716157173] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:35,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:35,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:35,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963223179] [2021-05-22 02:07:35,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:35,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:35,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:35,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:35,270 INFO L87 Difference]: Start difference. First operand 5153 states and 24409 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:35,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:35,376 INFO L93 Difference]: Finished difference Result 10304 states and 45966 transitions. [2021-05-22 02:07:35,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:35,377 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:35,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:35,402 INFO L225 Difference]: With dead ends: 10304 [2021-05-22 02:07:35,402 INFO L226 Difference]: Without dead ends: 9765 [2021-05-22 02:07:35,402 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:35,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9765 states. [2021-05-22 02:07:35,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9765 to 5089. [2021-05-22 02:07:35,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 4.751768867924528) internal successors, (24177), 5088 states have internal predecessors, (24177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:35,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 24177 transitions. [2021-05-22 02:07:35,634 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 24177 transitions. Word has length 29 [2021-05-22 02:07:35,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:35,634 INFO L482 AbstractCegarLoop]: Abstraction has 5089 states and 24177 transitions. [2021-05-22 02:07:35,635 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:35,635 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 24177 transitions. [2021-05-22 02:07:35,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:35,643 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:35,643 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:35,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1222 [2021-05-22 02:07:35,643 INFO L430 AbstractCegarLoop]: === Iteration 1224 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:35,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:35,643 INFO L82 PathProgramCache]: Analyzing trace with hash 768751683, now seen corresponding path program 1219 times [2021-05-22 02:07:35,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:35,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402094212] [2021-05-22 02:07:35,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:35,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:35,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402094212] [2021-05-22 02:07:35,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402094212] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:35,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:35,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:35,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189033821] [2021-05-22 02:07:35,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:35,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:35,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:35,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:35,761 INFO L87 Difference]: Start difference. First operand 5089 states and 24177 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:35,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:35,870 INFO L93 Difference]: Finished difference Result 10424 states and 46588 transitions. [2021-05-22 02:07:35,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:35,870 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:35,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:35,896 INFO L225 Difference]: With dead ends: 10424 [2021-05-22 02:07:35,896 INFO L226 Difference]: Without dead ends: 9947 [2021-05-22 02:07:35,896 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:36,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9947 states. [2021-05-22 02:07:36,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9947 to 5161. [2021-05-22 02:07:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.743604651162791) internal successors, (24477), 5160 states have internal predecessors, (24477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:36,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24477 transitions. [2021-05-22 02:07:36,132 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24477 transitions. Word has length 29 [2021-05-22 02:07:36,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:36,132 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24477 transitions. [2021-05-22 02:07:36,132 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:36,132 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24477 transitions. [2021-05-22 02:07:36,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:36,141 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:36,141 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:36,141 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1223 [2021-05-22 02:07:36,141 INFO L430 AbstractCegarLoop]: === Iteration 1225 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:36,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:36,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1849814309, now seen corresponding path program 1220 times [2021-05-22 02:07:36,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:36,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407148670] [2021-05-22 02:07:36,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:36,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:36,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407148670] [2021-05-22 02:07:36,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407148670] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:36,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:36,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:36,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535044765] [2021-05-22 02:07:36,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:36,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:36,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:36,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:36,261 INFO L87 Difference]: Start difference. First operand 5161 states and 24477 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:36,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:36,355 INFO L93 Difference]: Finished difference Result 10362 states and 46271 transitions. [2021-05-22 02:07:36,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:36,356 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:36,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:36,381 INFO L225 Difference]: With dead ends: 10362 [2021-05-22 02:07:36,381 INFO L226 Difference]: Without dead ends: 9899 [2021-05-22 02:07:36,381 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:36,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9899 states. [2021-05-22 02:07:36,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9899 to 5113. [2021-05-22 02:07:36,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.749021909233177) internal successors, (24277), 5112 states have internal predecessors, (24277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:36,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24277 transitions. [2021-05-22 02:07:36,608 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24277 transitions. Word has length 29 [2021-05-22 02:07:36,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:36,608 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24277 transitions. [2021-05-22 02:07:36,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:36,608 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24277 transitions. [2021-05-22 02:07:36,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:36,616 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:36,616 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:36,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1224 [2021-05-22 02:07:36,616 INFO L430 AbstractCegarLoop]: === Iteration 1226 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:36,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:36,616 INFO L82 PathProgramCache]: Analyzing trace with hash 287849637, now seen corresponding path program 1221 times [2021-05-22 02:07:36,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:36,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617339762] [2021-05-22 02:07:36,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:36,728 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:36,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617339762] [2021-05-22 02:07:36,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617339762] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:36,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:36,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:36,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364342281] [2021-05-22 02:07:36,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:36,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:36,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:36,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:36,728 INFO L87 Difference]: Start difference. First operand 5113 states and 24277 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:36,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:36,841 INFO L93 Difference]: Finished difference Result 10514 states and 46975 transitions. [2021-05-22 02:07:36,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:36,841 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:36,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:36,868 INFO L225 Difference]: With dead ends: 10514 [2021-05-22 02:07:36,868 INFO L226 Difference]: Without dead ends: 10037 [2021-05-22 02:07:36,868 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:36,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10037 states. [2021-05-22 02:07:37,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10037 to 5191. [2021-05-22 02:07:37,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.734104046242774) internal successors, (24570), 5190 states have internal predecessors, (24570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:37,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24570 transitions. [2021-05-22 02:07:37,109 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24570 transitions. Word has length 29 [2021-05-22 02:07:37,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:37,109 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24570 transitions. [2021-05-22 02:07:37,109 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:37,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24570 transitions. [2021-05-22 02:07:37,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:37,118 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:37,118 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:37,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1225 [2021-05-22 02:07:37,118 INFO L430 AbstractCegarLoop]: === Iteration 1227 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:37,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:37,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1400396635, now seen corresponding path program 1222 times [2021-05-22 02:07:37,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:37,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067327915] [2021-05-22 02:07:37,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:37,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:37,229 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:37,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067327915] [2021-05-22 02:07:37,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067327915] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:37,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:37,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:37,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891431248] [2021-05-22 02:07:37,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:37,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:37,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:37,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:37,230 INFO L87 Difference]: Start difference. First operand 5191 states and 24570 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:37,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:37,348 INFO L93 Difference]: Finished difference Result 10512 states and 46892 transitions. [2021-05-22 02:07:37,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:37,348 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:37,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:37,374 INFO L225 Difference]: With dead ends: 10512 [2021-05-22 02:07:37,375 INFO L226 Difference]: Without dead ends: 9959 [2021-05-22 02:07:37,375 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:37,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9959 states. [2021-05-22 02:07:37,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9959 to 5113. [2021-05-22 02:07:37,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.744327073552426) internal successors, (24253), 5112 states have internal predecessors, (24253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:37,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24253 transitions. [2021-05-22 02:07:37,610 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24253 transitions. Word has length 29 [2021-05-22 02:07:37,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:37,610 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24253 transitions. [2021-05-22 02:07:37,610 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:37,610 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24253 transitions. [2021-05-22 02:07:37,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:37,619 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:37,619 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:37,619 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1226 [2021-05-22 02:07:37,619 INFO L430 AbstractCegarLoop]: === Iteration 1228 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:37,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:37,619 INFO L82 PathProgramCache]: Analyzing trace with hash 675854599, now seen corresponding path program 1223 times [2021-05-22 02:07:37,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:37,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503516166] [2021-05-22 02:07:37,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:37,741 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:37,741 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503516166] [2021-05-22 02:07:37,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503516166] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:37,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:37,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:37,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424840172] [2021-05-22 02:07:37,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:37,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:37,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:37,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:37,742 INFO L87 Difference]: Start difference. First operand 5113 states and 24253 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:37,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:37,832 INFO L93 Difference]: Finished difference Result 10360 states and 46266 transitions. [2021-05-22 02:07:37,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:37,832 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:37,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:37,858 INFO L225 Difference]: With dead ends: 10360 [2021-05-22 02:07:37,858 INFO L226 Difference]: Without dead ends: 9945 [2021-05-22 02:07:37,858 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:37,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9945 states. [2021-05-22 02:07:38,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9945 to 5161. [2021-05-22 02:07:38,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.734302325581395) internal successors, (24429), 5160 states have internal predecessors, (24429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:38,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24429 transitions. [2021-05-22 02:07:38,092 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24429 transitions. Word has length 29 [2021-05-22 02:07:38,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:38,093 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24429 transitions. [2021-05-22 02:07:38,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:38,093 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24429 transitions. [2021-05-22 02:07:38,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:38,101 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:38,101 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:38,101 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1227 [2021-05-22 02:07:38,101 INFO L430 AbstractCegarLoop]: === Iteration 1229 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:38,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:38,102 INFO L82 PathProgramCache]: Analyzing trace with hash -170942363, now seen corresponding path program 1224 times [2021-05-22 02:07:38,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:38,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685322796] [2021-05-22 02:07:38,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:38,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:38,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685322796] [2021-05-22 02:07:38,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685322796] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:38,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:38,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:38,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871861448] [2021-05-22 02:07:38,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:38,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:38,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:38,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:38,223 INFO L87 Difference]: Start difference. First operand 5161 states and 24429 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:38,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:38,342 INFO L93 Difference]: Finished difference Result 10420 states and 46482 transitions. [2021-05-22 02:07:38,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:38,343 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:38,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:38,368 INFO L225 Difference]: With dead ends: 10420 [2021-05-22 02:07:38,369 INFO L226 Difference]: Without dead ends: 9865 [2021-05-22 02:07:38,369 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:38,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9865 states. [2021-05-22 02:07:38,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9865 to 5081. [2021-05-22 02:07:38,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5081 states, 5080 states have (on average 4.754527559055118) internal successors, (24153), 5080 states have internal predecessors, (24153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:38,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5081 states to 5081 states and 24153 transitions. [2021-05-22 02:07:38,599 INFO L78 Accepts]: Start accepts. Automaton has 5081 states and 24153 transitions. Word has length 29 [2021-05-22 02:07:38,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:38,599 INFO L482 AbstractCegarLoop]: Abstraction has 5081 states and 24153 transitions. [2021-05-22 02:07:38,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:38,599 INFO L276 IsEmpty]: Start isEmpty. Operand 5081 states and 24153 transitions. [2021-05-22 02:07:38,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:38,608 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:38,608 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:38,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1228 [2021-05-22 02:07:38,608 INFO L430 AbstractCegarLoop]: === Iteration 1230 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:38,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:38,608 INFO L82 PathProgramCache]: Analyzing trace with hash -398360761, now seen corresponding path program 1225 times [2021-05-22 02:07:38,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:38,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2448843] [2021-05-22 02:07:38,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:38,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:38,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2448843] [2021-05-22 02:07:38,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2448843] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:38,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:38,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:38,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829678191] [2021-05-22 02:07:38,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:38,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:38,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:38,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:38,728 INFO L87 Difference]: Start difference. First operand 5081 states and 24153 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:38,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:38,851 INFO L93 Difference]: Finished difference Result 10214 states and 45661 transitions. [2021-05-22 02:07:38,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:38,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:38,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:38,876 INFO L225 Difference]: With dead ends: 10214 [2021-05-22 02:07:38,877 INFO L226 Difference]: Without dead ends: 9799 [2021-05-22 02:07:38,877 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:38,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9799 states. [2021-05-22 02:07:39,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9799 to 5153. [2021-05-22 02:07:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.746312111801243) internal successors, (24453), 5152 states have internal predecessors, (24453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:39,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24453 transitions. [2021-05-22 02:07:39,109 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24453 transitions. Word has length 29 [2021-05-22 02:07:39,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:39,110 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24453 transitions. [2021-05-22 02:07:39,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:39,110 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24453 transitions. [2021-05-22 02:07:39,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:39,118 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:39,118 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:39,118 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1229 [2021-05-22 02:07:39,119 INFO L430 AbstractCegarLoop]: === Iteration 1231 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:39,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:39,119 INFO L82 PathProgramCache]: Analyzing trace with hash 318302185, now seen corresponding path program 1226 times [2021-05-22 02:07:39,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:39,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762798063] [2021-05-22 02:07:39,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:39,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:39,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762798063] [2021-05-22 02:07:39,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762798063] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:39,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:39,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:39,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124166744] [2021-05-22 02:07:39,239 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:39,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:39,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:39,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:39,240 INFO L87 Difference]: Start difference. First operand 5153 states and 24453 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:39,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:39,362 INFO L93 Difference]: Finished difference Result 10276 states and 45882 transitions. [2021-05-22 02:07:39,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:39,363 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:39,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:39,387 INFO L225 Difference]: With dead ends: 10276 [2021-05-22 02:07:39,387 INFO L226 Difference]: Without dead ends: 9751 [2021-05-22 02:07:39,387 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:39,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9751 states. [2021-05-22 02:07:39,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9751 to 5105. [2021-05-22 02:07:39,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.753330721003135) internal successors, (24261), 5104 states have internal predecessors, (24261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:39,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24261 transitions. [2021-05-22 02:07:39,614 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24261 transitions. Word has length 29 [2021-05-22 02:07:39,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:39,614 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24261 transitions. [2021-05-22 02:07:39,614 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:39,614 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24261 transitions. [2021-05-22 02:07:39,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:39,622 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:39,622 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:39,622 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1230 [2021-05-22 02:07:39,622 INFO L430 AbstractCegarLoop]: === Iteration 1232 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:39,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:39,623 INFO L82 PathProgramCache]: Analyzing trace with hash -879262807, now seen corresponding path program 1227 times [2021-05-22 02:07:39,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:39,623 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337800763] [2021-05-22 02:07:39,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:39,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:39,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:39,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337800763] [2021-05-22 02:07:39,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337800763] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:39,731 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:39,731 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:39,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375686949] [2021-05-22 02:07:39,731 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:39,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:39,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:39,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:39,731 INFO L87 Difference]: Start difference. First operand 5105 states and 24261 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:39,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:39,854 INFO L93 Difference]: Finished difference Result 10136 states and 45296 transitions. [2021-05-22 02:07:39,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:39,855 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:39,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:39,879 INFO L225 Difference]: With dead ends: 10136 [2021-05-22 02:07:39,879 INFO L226 Difference]: Without dead ends: 9721 [2021-05-22 02:07:39,879 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:40,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9721 states. [2021-05-22 02:07:40,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9721 to 5137. [2021-05-22 02:07:40,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.745521806853582) internal successors, (24373), 5136 states have internal predecessors, (24373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:40,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24373 transitions. [2021-05-22 02:07:40,105 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24373 transitions. Word has length 29 [2021-05-22 02:07:40,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:40,106 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24373 transitions. [2021-05-22 02:07:40,106 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:40,106 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24373 transitions. [2021-05-22 02:07:40,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:40,114 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:40,114 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:40,114 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1231 [2021-05-22 02:07:40,114 INFO L430 AbstractCegarLoop]: === Iteration 1233 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:40,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:40,114 INFO L82 PathProgramCache]: Analyzing trace with hash -467854811, now seen corresponding path program 1228 times [2021-05-22 02:07:40,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:40,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288524094] [2021-05-22 02:07:40,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:40,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:40,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:40,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288524094] [2021-05-22 02:07:40,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288524094] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:40,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:40,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:40,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868959686] [2021-05-22 02:07:40,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:40,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:40,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:40,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:40,227 INFO L87 Difference]: Start difference. First operand 5137 states and 24373 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:40,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:40,318 INFO L93 Difference]: Finished difference Result 10136 states and 45264 transitions. [2021-05-22 02:07:40,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:40,318 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:40,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:40,342 INFO L225 Difference]: With dead ends: 10136 [2021-05-22 02:07:40,342 INFO L226 Difference]: Without dead ends: 9689 [2021-05-22 02:07:40,343 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:40,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9689 states. [2021-05-22 02:07:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9689 to 5105. [2021-05-22 02:07:40,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.75019592476489) internal successors, (24245), 5104 states have internal predecessors, (24245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:40,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24245 transitions. [2021-05-22 02:07:40,568 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24245 transitions. Word has length 29 [2021-05-22 02:07:40,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:40,568 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24245 transitions. [2021-05-22 02:07:40,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:40,568 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24245 transitions. [2021-05-22 02:07:40,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:40,576 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:40,576 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:40,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1232 [2021-05-22 02:07:40,576 INFO L430 AbstractCegarLoop]: === Iteration 1234 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:40,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:40,577 INFO L82 PathProgramCache]: Analyzing trace with hash -332159323, now seen corresponding path program 1229 times [2021-05-22 02:07:40,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:40,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555518678] [2021-05-22 02:07:40,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:40,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:40,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555518678] [2021-05-22 02:07:40,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555518678] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:40,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:40,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:40,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054475482] [2021-05-22 02:07:40,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:40,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:40,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:40,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:40,697 INFO L87 Difference]: Start difference. First operand 5105 states and 24245 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:40,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:40,799 INFO L93 Difference]: Finished difference Result 10276 states and 45898 transitions. [2021-05-22 02:07:40,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:40,800 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:40,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:40,824 INFO L225 Difference]: With dead ends: 10276 [2021-05-22 02:07:40,824 INFO L226 Difference]: Without dead ends: 9799 [2021-05-22 02:07:40,824 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:40,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9799 states. [2021-05-22 02:07:41,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9799 to 5153. [2021-05-22 02:07:41,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.740100931677019) internal successors, (24421), 5152 states have internal predecessors, (24421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:41,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24421 transitions. [2021-05-22 02:07:41,052 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24421 transitions. Word has length 29 [2021-05-22 02:07:41,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:41,052 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24421 transitions. [2021-05-22 02:07:41,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:41,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24421 transitions. [2021-05-22 02:07:41,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:41,060 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:41,060 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:41,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1233 [2021-05-22 02:07:41,061 INFO L430 AbstractCegarLoop]: === Iteration 1235 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:41,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:41,061 INFO L82 PathProgramCache]: Analyzing trace with hash 748903303, now seen corresponding path program 1230 times [2021-05-22 02:07:41,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:41,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268750902] [2021-05-22 02:07:41,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:41,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:41,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268750902] [2021-05-22 02:07:41,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268750902] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:41,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:41,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:41,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132828723] [2021-05-22 02:07:41,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:41,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:41,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:41,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:41,181 INFO L87 Difference]: Start difference. First operand 5153 states and 24421 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:41,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:41,270 INFO L93 Difference]: Finished difference Result 10214 states and 45581 transitions. [2021-05-22 02:07:41,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:41,270 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:41,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:41,295 INFO L225 Difference]: With dead ends: 10214 [2021-05-22 02:07:41,295 INFO L226 Difference]: Without dead ends: 9735 [2021-05-22 02:07:41,295 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:41,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9735 states. [2021-05-22 02:07:41,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9735 to 5089. [2021-05-22 02:07:41,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 4.754127358490566) internal successors, (24189), 5088 states have internal predecessors, (24189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 24189 transitions. [2021-05-22 02:07:41,521 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 24189 transitions. Word has length 29 [2021-05-22 02:07:41,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:41,521 INFO L482 AbstractCegarLoop]: Abstraction has 5089 states and 24189 transitions. [2021-05-22 02:07:41,521 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:41,522 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 24189 transitions. [2021-05-22 02:07:41,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:41,530 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:41,530 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:41,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1234 [2021-05-22 02:07:41,530 INFO L430 AbstractCegarLoop]: === Iteration 1236 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:41,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:41,530 INFO L82 PathProgramCache]: Analyzing trace with hash 692705095, now seen corresponding path program 1231 times [2021-05-22 02:07:41,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:41,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048298774] [2021-05-22 02:07:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:41,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:41,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:41,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048298774] [2021-05-22 02:07:41,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048298774] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:41,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:41,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:41,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124156868] [2021-05-22 02:07:41,649 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:41,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:41,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:41,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:41,650 INFO L87 Difference]: Start difference. First operand 5089 states and 24189 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:41,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:41,755 INFO L93 Difference]: Finished difference Result 10262 states and 45901 transitions. [2021-05-22 02:07:41,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:41,755 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:41,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:41,780 INFO L225 Difference]: With dead ends: 10262 [2021-05-22 02:07:41,780 INFO L226 Difference]: Without dead ends: 9847 [2021-05-22 02:07:41,780 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:41,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9847 states. [2021-05-22 02:07:41,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9847 to 5161. [2021-05-22 02:07:41,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.745930232558139) internal successors, (24489), 5160 states have internal predecessors, (24489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:42,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24489 transitions. [2021-05-22 02:07:42,006 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24489 transitions. Word has length 29 [2021-05-22 02:07:42,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:42,006 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24489 transitions. [2021-05-22 02:07:42,006 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:42,006 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24489 transitions. [2021-05-22 02:07:42,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:42,015 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:42,015 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:42,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1235 [2021-05-22 02:07:42,015 INFO L430 AbstractCegarLoop]: === Iteration 1237 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:42,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:42,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1409368041, now seen corresponding path program 1232 times [2021-05-22 02:07:42,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:42,015 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116615153] [2021-05-22 02:07:42,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:42,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:42,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:42,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116615153] [2021-05-22 02:07:42,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116615153] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:42,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:42,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:42,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891822324] [2021-05-22 02:07:42,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:42,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:42,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:42,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:42,136 INFO L87 Difference]: Start difference. First operand 5161 states and 24489 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:42,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:42,246 INFO L93 Difference]: Finished difference Result 10324 states and 46122 transitions. [2021-05-22 02:07:42,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:42,247 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:42,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:42,271 INFO L225 Difference]: With dead ends: 10324 [2021-05-22 02:07:42,271 INFO L226 Difference]: Without dead ends: 9799 [2021-05-22 02:07:42,272 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:42,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9799 states. [2021-05-22 02:07:42,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9799 to 5113. [2021-05-22 02:07:42,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.751369327073553) internal successors, (24289), 5112 states have internal predecessors, (24289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:42,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24289 transitions. [2021-05-22 02:07:42,540 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24289 transitions. Word has length 29 [2021-05-22 02:07:42,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:42,541 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24289 transitions. [2021-05-22 02:07:42,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:42,541 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24289 transitions. [2021-05-22 02:07:42,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:42,549 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:42,549 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:42,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1236 [2021-05-22 02:07:42,549 INFO L430 AbstractCegarLoop]: === Iteration 1238 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:42,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:42,549 INFO L82 PathProgramCache]: Analyzing trace with hash 379658055, now seen corresponding path program 1233 times [2021-05-22 02:07:42,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:42,550 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002439890] [2021-05-22 02:07:42,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:42,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:42,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:42,658 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002439890] [2021-05-22 02:07:42,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002439890] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:42,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:42,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:42,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249967386] [2021-05-22 02:07:42,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:42,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:42,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:42,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:42,658 INFO L87 Difference]: Start difference. First operand 5113 states and 24289 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:42,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:42,764 INFO L93 Difference]: Finished difference Result 10152 states and 45432 transitions. [2021-05-22 02:07:42,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:42,764 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:42,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:42,789 INFO L225 Difference]: With dead ends: 10152 [2021-05-22 02:07:42,789 INFO L226 Difference]: Without dead ends: 9737 [2021-05-22 02:07:42,789 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:42,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9737 states. [2021-05-22 02:07:42,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9737 to 5161. [2021-05-22 02:07:43,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.741279069767442) internal successors, (24465), 5160 states have internal predecessors, (24465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:43,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24465 transitions. [2021-05-22 02:07:43,015 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24465 transitions. Word has length 29 [2021-05-22 02:07:43,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:43,015 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24465 transitions. [2021-05-22 02:07:43,015 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:43,015 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24465 transitions. [2021-05-22 02:07:43,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:43,023 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:43,023 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:43,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1237 [2021-05-22 02:07:43,024 INFO L430 AbstractCegarLoop]: === Iteration 1239 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:43,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:43,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1934281479, now seen corresponding path program 1234 times [2021-05-22 02:07:43,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:43,024 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036995179] [2021-05-22 02:07:43,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:43,133 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:43,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036995179] [2021-05-22 02:07:43,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036995179] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:43,133 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:43,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:43,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236746802] [2021-05-22 02:07:43,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:43,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:43,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:43,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:43,134 INFO L87 Difference]: Start difference. First operand 5161 states and 24465 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:43,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:43,241 INFO L93 Difference]: Finished difference Result 9880 states and 44423 transitions. [2021-05-22 02:07:43,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:43,241 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:43,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:43,266 INFO L225 Difference]: With dead ends: 9880 [2021-05-22 02:07:43,266 INFO L226 Difference]: Without dead ends: 9369 [2021-05-22 02:07:43,266 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:43,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9369 states. [2021-05-22 02:07:43,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9369 to 5113. [2021-05-22 02:07:43,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.746674491392802) internal successors, (24265), 5112 states have internal predecessors, (24265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:43,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24265 transitions. [2021-05-22 02:07:43,494 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24265 transitions. Word has length 29 [2021-05-22 02:07:43,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:43,494 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24265 transitions. [2021-05-22 02:07:43,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:43,494 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24265 transitions. [2021-05-22 02:07:43,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:43,503 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:43,503 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:43,503 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1238 [2021-05-22 02:07:43,503 INFO L430 AbstractCegarLoop]: === Iteration 1240 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:43,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:43,503 INFO L82 PathProgramCache]: Analyzing trace with hash 763810601, now seen corresponding path program 1235 times [2021-05-22 02:07:43,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:43,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338009790] [2021-05-22 02:07:43,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:43,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:43,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:43,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338009790] [2021-05-22 02:07:43,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338009790] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:43,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:43,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:43,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225896618] [2021-05-22 02:07:43,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:43,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:43,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:43,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:43,622 INFO L87 Difference]: Start difference. First operand 5113 states and 24265 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:43,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:43,729 INFO L93 Difference]: Finished difference Result 10238 states and 45801 transitions. [2021-05-22 02:07:43,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:43,729 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:43,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:43,755 INFO L225 Difference]: With dead ends: 10238 [2021-05-22 02:07:43,755 INFO L226 Difference]: Without dead ends: 9761 [2021-05-22 02:07:43,756 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:43,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9761 states. [2021-05-22 02:07:43,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9761 to 5185. [2021-05-22 02:07:43,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.733989197530864) internal successors, (24541), 5184 states have internal predecessors, (24541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24541 transitions. [2021-05-22 02:07:43,991 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24541 transitions. Word has length 29 [2021-05-22 02:07:43,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:43,991 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24541 transitions. [2021-05-22 02:07:43,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:43,991 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24541 transitions. [2021-05-22 02:07:44,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:44,000 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:44,000 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:44,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1239 [2021-05-22 02:07:44,000 INFO L430 AbstractCegarLoop]: === Iteration 1241 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:44,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:44,000 INFO L82 PathProgramCache]: Analyzing trace with hash 674050951, now seen corresponding path program 1236 times [2021-05-22 02:07:44,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:44,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075738002] [2021-05-22 02:07:44,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:44,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:44,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075738002] [2021-05-22 02:07:44,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075738002] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:44,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:44,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:44,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397294863] [2021-05-22 02:07:44,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:44,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:44,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:44,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:44,119 INFO L87 Difference]: Start difference. First operand 5185 states and 24541 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:44,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:44,222 INFO L93 Difference]: Finished difference Result 9904 states and 44499 transitions. [2021-05-22 02:07:44,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:44,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:44,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:44,245 INFO L225 Difference]: With dead ends: 9904 [2021-05-22 02:07:44,246 INFO L226 Difference]: Without dead ends: 9345 [2021-05-22 02:07:44,246 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:44,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9345 states. [2021-05-22 02:07:44,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9345 to 5089. [2021-05-22 02:07:44,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 4.752555031446541) internal successors, (24181), 5088 states have internal predecessors, (24181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:44,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 24181 transitions. [2021-05-22 02:07:44,465 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 24181 transitions. Word has length 29 [2021-05-22 02:07:44,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:44,465 INFO L482 AbstractCegarLoop]: Abstraction has 5089 states and 24181 transitions. [2021-05-22 02:07:44,465 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:44,465 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 24181 transitions. [2021-05-22 02:07:44,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:44,473 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:44,473 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:44,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1240 [2021-05-22 02:07:44,473 INFO L430 AbstractCegarLoop]: === Iteration 1242 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:44,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:44,473 INFO L82 PathProgramCache]: Analyzing trace with hash -96681175, now seen corresponding path program 1237 times [2021-05-22 02:07:44,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:44,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305078225] [2021-05-22 02:07:44,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:44,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:44,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305078225] [2021-05-22 02:07:44,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305078225] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:44,577 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:44,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:44,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061161277] [2021-05-22 02:07:44,577 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:44,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:44,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:44,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:44,577 INFO L87 Difference]: Start difference. First operand 5089 states and 24181 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:44,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:44,697 INFO L93 Difference]: Finished difference Result 10090 states and 45107 transitions. [2021-05-22 02:07:44,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:44,697 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:44,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:44,721 INFO L225 Difference]: With dead ends: 10090 [2021-05-22 02:07:44,722 INFO L226 Difference]: Without dead ends: 9675 [2021-05-22 02:07:44,722 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:44,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9675 states. [2021-05-22 02:07:44,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9675 to 5137. [2021-05-22 02:07:44,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.745521806853582) internal successors, (24373), 5136 states have internal predecessors, (24373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:44,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24373 transitions. [2021-05-22 02:07:44,949 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24373 transitions. Word has length 29 [2021-05-22 02:07:44,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:44,949 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24373 transitions. [2021-05-22 02:07:44,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:44,949 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24373 transitions. [2021-05-22 02:07:44,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:44,957 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:44,957 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:44,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1241 [2021-05-22 02:07:44,957 INFO L430 AbstractCegarLoop]: === Iteration 1243 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:44,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:44,958 INFO L82 PathProgramCache]: Analyzing trace with hash 314726821, now seen corresponding path program 1238 times [2021-05-22 02:07:44,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:44,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331354928] [2021-05-22 02:07:44,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:45,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:45,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:45,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331354928] [2021-05-22 02:07:45,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331354928] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:45,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:45,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:45,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104463893] [2021-05-22 02:07:45,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:45,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:45,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:45,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:45,063 INFO L87 Difference]: Start difference. First operand 5137 states and 24373 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:45,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:45,155 INFO L93 Difference]: Finished difference Result 10090 states and 45075 transitions. [2021-05-22 02:07:45,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:45,155 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:45,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:45,178 INFO L225 Difference]: With dead ends: 10090 [2021-05-22 02:07:45,178 INFO L226 Difference]: Without dead ends: 9643 [2021-05-22 02:07:45,179 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:45,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9643 states. [2021-05-22 02:07:45,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9643 to 5105. [2021-05-22 02:07:45,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.75019592476489) internal successors, (24245), 5104 states have internal predecessors, (24245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:45,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24245 transitions. [2021-05-22 02:07:45,398 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24245 transitions. Word has length 29 [2021-05-22 02:07:45,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:45,398 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24245 transitions. [2021-05-22 02:07:45,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:45,399 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24245 transitions. [2021-05-22 02:07:45,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:45,407 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:45,407 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:45,407 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1242 [2021-05-22 02:07:45,407 INFO L430 AbstractCegarLoop]: === Iteration 1244 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:45,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:45,407 INFO L82 PathProgramCache]: Analyzing trace with hash -2139644921, now seen corresponding path program 1239 times [2021-05-22 02:07:45,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:45,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741006055] [2021-05-22 02:07:45,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:45,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:45,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:45,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741006055] [2021-05-22 02:07:45,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741006055] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:45,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:45,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:45,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860808227] [2021-05-22 02:07:45,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:45,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:45,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:45,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:45,508 INFO L87 Difference]: Start difference. First operand 5105 states and 24245 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:45,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:45,617 INFO L93 Difference]: Finished difference Result 10058 states and 44995 transitions. [2021-05-22 02:07:45,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:45,617 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:45,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:45,641 INFO L225 Difference]: With dead ends: 10058 [2021-05-22 02:07:45,642 INFO L226 Difference]: Without dead ends: 9643 [2021-05-22 02:07:45,642 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:45,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9643 states. [2021-05-22 02:07:45,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9643 to 5153. [2021-05-22 02:07:45,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.740100931677019) internal successors, (24421), 5152 states have internal predecessors, (24421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:45,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24421 transitions. [2021-05-22 02:07:45,871 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24421 transitions. Word has length 29 [2021-05-22 02:07:45,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:45,871 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24421 transitions. [2021-05-22 02:07:45,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:45,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24421 transitions. [2021-05-22 02:07:45,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:45,880 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:45,880 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:45,880 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1243 [2021-05-22 02:07:45,880 INFO L430 AbstractCegarLoop]: === Iteration 1245 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:45,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:45,880 INFO L82 PathProgramCache]: Analyzing trace with hash -651084055, now seen corresponding path program 1240 times [2021-05-22 02:07:45,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:45,880 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187611036] [2021-05-22 02:07:45,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:45,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:45,982 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:45,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187611036] [2021-05-22 02:07:45,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187611036] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:45,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:45,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:45,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049825075] [2021-05-22 02:07:45,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:45,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:45,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:45,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:45,983 INFO L87 Difference]: Start difference. First operand 5153 states and 24421 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:46,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:46,091 INFO L93 Difference]: Finished difference Result 9786 states and 43986 transitions. [2021-05-22 02:07:46,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:46,091 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:46,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:46,115 INFO L225 Difference]: With dead ends: 9786 [2021-05-22 02:07:46,116 INFO L226 Difference]: Without dead ends: 9275 [2021-05-22 02:07:46,116 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:46,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9275 states. [2021-05-22 02:07:46,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9275 to 5105. [2021-05-22 02:07:46,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.747061128526646) internal successors, (24229), 5104 states have internal predecessors, (24229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:46,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24229 transitions. [2021-05-22 02:07:46,346 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24229 transitions. Word has length 29 [2021-05-22 02:07:46,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:46,346 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24229 transitions. [2021-05-22 02:07:46,346 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:46,346 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24229 transitions. [2021-05-22 02:07:46,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:46,354 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:46,354 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:46,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1244 [2021-05-22 02:07:46,354 INFO L430 AbstractCegarLoop]: === Iteration 1246 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:46,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:46,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1503573053, now seen corresponding path program 1241 times [2021-05-22 02:07:46,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:46,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480516824] [2021-05-22 02:07:46,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:46,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:46,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480516824] [2021-05-22 02:07:46,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480516824] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:46,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:46,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:46,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300687694] [2021-05-22 02:07:46,459 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:46,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:46,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:46,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:46,460 INFO L87 Difference]: Start difference. First operand 5105 states and 24229 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:46,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:46,558 INFO L93 Difference]: Finished difference Result 10058 states and 44979 transitions. [2021-05-22 02:07:46,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:46,558 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:46,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:46,584 INFO L225 Difference]: With dead ends: 10058 [2021-05-22 02:07:46,584 INFO L226 Difference]: Without dead ends: 9643 [2021-05-22 02:07:46,584 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 111.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:46,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9643 states. [2021-05-22 02:07:46,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9643 to 5153. [2021-05-22 02:07:46,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.736995341614906) internal successors, (24405), 5152 states have internal predecessors, (24405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:46,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24405 transitions. [2021-05-22 02:07:46,810 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24405 transitions. Word has length 29 [2021-05-22 02:07:46,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:46,810 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24405 transitions. [2021-05-22 02:07:46,810 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:46,810 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24405 transitions. [2021-05-22 02:07:46,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:46,818 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:46,818 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:46,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1245 [2021-05-22 02:07:46,818 INFO L430 AbstractCegarLoop]: === Iteration 1247 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:46,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:46,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1296715685, now seen corresponding path program 1242 times [2021-05-22 02:07:46,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:46,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672485215] [2021-05-22 02:07:46,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:46,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:46,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:46,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672485215] [2021-05-22 02:07:46,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672485215] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:46,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:46,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:46,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026281485] [2021-05-22 02:07:46,922 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:46,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:46,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:46,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:46,922 INFO L87 Difference]: Start difference. First operand 5153 states and 24405 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:47,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:47,033 INFO L93 Difference]: Finished difference Result 9786 states and 43970 transitions. [2021-05-22 02:07:47,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:47,033 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:47,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:47,059 INFO L225 Difference]: With dead ends: 9786 [2021-05-22 02:07:47,059 INFO L226 Difference]: Without dead ends: 9259 [2021-05-22 02:07:47,059 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:47,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9259 states. [2021-05-22 02:07:47,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9259 to 5089. [2021-05-22 02:07:47,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 4.7509827044025155) internal successors, (24173), 5088 states have internal predecessors, (24173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:47,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 24173 transitions. [2021-05-22 02:07:47,285 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 24173 transitions. Word has length 29 [2021-05-22 02:07:47,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:47,285 INFO L482 AbstractCegarLoop]: Abstraction has 5089 states and 24173 transitions. [2021-05-22 02:07:47,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:47,285 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 24173 transitions. [2021-05-22 02:07:47,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:47,293 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:47,293 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:47,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1246 [2021-05-22 02:07:47,294 INFO L430 AbstractCegarLoop]: === Iteration 1248 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:47,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:47,294 INFO L82 PathProgramCache]: Analyzing trace with hash -2015463357, now seen corresponding path program 1243 times [2021-05-22 02:07:47,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:47,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706375651] [2021-05-22 02:07:47,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:47,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:47,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706375651] [2021-05-22 02:07:47,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706375651] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:47,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:47,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:47,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548378131] [2021-05-22 02:07:47,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:47,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:47,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:47,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:47,413 INFO L87 Difference]: Start difference. First operand 5089 states and 24173 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:47,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:47,518 INFO L93 Difference]: Finished difference Result 10324 states and 46154 transitions. [2021-05-22 02:07:47,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:47,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:47,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:47,543 INFO L225 Difference]: With dead ends: 10324 [2021-05-22 02:07:47,543 INFO L226 Difference]: Without dead ends: 9847 [2021-05-22 02:07:47,543 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:47,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9847 states. [2021-05-22 02:07:47,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9847 to 5161. [2021-05-22 02:07:47,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.7428294573643415) internal successors, (24473), 5160 states have internal predecessors, (24473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:47,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24473 transitions. [2021-05-22 02:07:47,774 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24473 transitions. Word has length 29 [2021-05-22 02:07:47,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:47,774 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24473 transitions. [2021-05-22 02:07:47,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:47,774 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24473 transitions. [2021-05-22 02:07:47,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:47,784 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:47,784 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:47,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1247 [2021-05-22 02:07:47,784 INFO L430 AbstractCegarLoop]: === Iteration 1249 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:47,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:47,784 INFO L82 PathProgramCache]: Analyzing trace with hash -934400731, now seen corresponding path program 1244 times [2021-05-22 02:07:47,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:47,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654220264] [2021-05-22 02:07:47,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:47,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:47,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654220264] [2021-05-22 02:07:47,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654220264] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:47,901 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:47,901 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:47,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973520758] [2021-05-22 02:07:47,901 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:47,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:47,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:47,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:47,902 INFO L87 Difference]: Start difference. First operand 5161 states and 24473 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:47,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:47,995 INFO L93 Difference]: Finished difference Result 10262 states and 45837 transitions. [2021-05-22 02:07:47,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:47,995 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:47,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:48,021 INFO L225 Difference]: With dead ends: 10262 [2021-05-22 02:07:48,021 INFO L226 Difference]: Without dead ends: 9799 [2021-05-22 02:07:48,021 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:48,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9799 states. [2021-05-22 02:07:48,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9799 to 5113. [2021-05-22 02:07:48,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.748239436619718) internal successors, (24273), 5112 states have internal predecessors, (24273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:48,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24273 transitions. [2021-05-22 02:07:48,234 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24273 transitions. Word has length 29 [2021-05-22 02:07:48,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:48,234 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24273 transitions. [2021-05-22 02:07:48,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:48,235 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24273 transitions. [2021-05-22 02:07:48,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:48,242 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:48,242 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:48,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1248 [2021-05-22 02:07:48,242 INFO L430 AbstractCegarLoop]: === Iteration 1250 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:48,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:48,243 INFO L82 PathProgramCache]: Analyzing trace with hash 412486565, now seen corresponding path program 1245 times [2021-05-22 02:07:48,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:48,243 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222445385] [2021-05-22 02:07:48,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:48,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:48,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:48,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222445385] [2021-05-22 02:07:48,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222445385] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:48,360 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:48,360 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:48,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972455737] [2021-05-22 02:07:48,360 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:48,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:48,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:48,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:48,360 INFO L87 Difference]: Start difference. First operand 5113 states and 24273 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:48,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:48,468 INFO L93 Difference]: Finished difference Result 10238 states and 45809 transitions. [2021-05-22 02:07:48,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:48,469 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:48,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:48,494 INFO L225 Difference]: With dead ends: 10238 [2021-05-22 02:07:48,494 INFO L226 Difference]: Without dead ends: 9761 [2021-05-22 02:07:48,494 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:48,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9761 states. [2021-05-22 02:07:48,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9761 to 5185. [2021-05-22 02:07:48,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.735532407407407) internal successors, (24549), 5184 states have internal predecessors, (24549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:48,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24549 transitions. [2021-05-22 02:07:48,722 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24549 transitions. Word has length 29 [2021-05-22 02:07:48,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:48,722 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24549 transitions. [2021-05-22 02:07:48,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:48,722 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24549 transitions. [2021-05-22 02:07:48,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:48,731 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:48,731 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:48,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1249 [2021-05-22 02:07:48,731 INFO L430 AbstractCegarLoop]: === Iteration 1251 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:48,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:48,731 INFO L82 PathProgramCache]: Analyzing trace with hash -2095098971, now seen corresponding path program 1246 times [2021-05-22 02:07:48,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:48,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735686684] [2021-05-22 02:07:48,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:48,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:48,851 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:48,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735686684] [2021-05-22 02:07:48,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735686684] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:48,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:48,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:48,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189946929] [2021-05-22 02:07:48,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:48,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:48,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:48,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:48,852 INFO L87 Difference]: Start difference. First operand 5185 states and 24549 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:48,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:48,954 INFO L93 Difference]: Finished difference Result 9904 states and 44507 transitions. [2021-05-22 02:07:48,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:48,954 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:48,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:48,978 INFO L225 Difference]: With dead ends: 9904 [2021-05-22 02:07:48,978 INFO L226 Difference]: Without dead ends: 9369 [2021-05-22 02:07:48,978 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:49,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9369 states. [2021-05-22 02:07:49,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9369 to 5113. [2021-05-22 02:07:49,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.743544600938967) internal successors, (24249), 5112 states have internal predecessors, (24249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:49,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24249 transitions. [2021-05-22 02:07:49,195 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24249 transitions. Word has length 29 [2021-05-22 02:07:49,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:49,195 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24249 transitions. [2021-05-22 02:07:49,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:49,196 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24249 transitions. [2021-05-22 02:07:49,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:49,203 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:49,203 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:49,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1250 [2021-05-22 02:07:49,204 INFO L430 AbstractCegarLoop]: === Iteration 1252 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:49,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:49,204 INFO L82 PathProgramCache]: Analyzing trace with hash 800491527, now seen corresponding path program 1247 times [2021-05-22 02:07:49,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:49,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866752957] [2021-05-22 02:07:49,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:49,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:49,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866752957] [2021-05-22 02:07:49,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866752957] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:49,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:49,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:49,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893691919] [2021-05-22 02:07:49,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:49,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:49,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:49,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:49,314 INFO L87 Difference]: Start difference. First operand 5113 states and 24249 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:49,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:49,407 INFO L93 Difference]: Finished difference Result 10152 states and 45392 transitions. [2021-05-22 02:07:49,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:49,407 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:49,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:49,432 INFO L225 Difference]: With dead ends: 10152 [2021-05-22 02:07:49,432 INFO L226 Difference]: Without dead ends: 9737 [2021-05-22 02:07:49,432 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:49,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9737 states. [2021-05-22 02:07:49,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9737 to 5161. [2021-05-22 02:07:49,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.733527131782946) internal successors, (24425), 5160 states have internal predecessors, (24425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:49,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24425 transitions. [2021-05-22 02:07:49,654 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24425 transitions. Word has length 29 [2021-05-22 02:07:49,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:49,654 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24425 transitions. [2021-05-22 02:07:49,654 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:49,654 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24425 transitions. [2021-05-22 02:07:49,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:49,663 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:49,663 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:49,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1251 [2021-05-22 02:07:49,663 INFO L430 AbstractCegarLoop]: === Iteration 1253 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:49,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:49,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1710096485, now seen corresponding path program 1248 times [2021-05-22 02:07:49,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:49,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720114593] [2021-05-22 02:07:49,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:49,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:49,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:49,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720114593] [2021-05-22 02:07:49,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720114593] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:49,772 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:49,772 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:49,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971041484] [2021-05-22 02:07:49,772 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:49,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:49,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:49,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:49,772 INFO L87 Difference]: Start difference. First operand 5161 states and 24425 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:49,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:49,881 INFO L93 Difference]: Finished difference Result 9880 states and 44383 transitions. [2021-05-22 02:07:49,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:49,882 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:49,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:49,905 INFO L225 Difference]: With dead ends: 9880 [2021-05-22 02:07:49,905 INFO L226 Difference]: Without dead ends: 9337 [2021-05-22 02:07:49,905 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:50,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9337 states. [2021-05-22 02:07:50,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9337 to 5081. [2021-05-22 02:07:50,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5081 states, 5080 states have (on average 4.753740157480315) internal successors, (24149), 5080 states have internal predecessors, (24149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:50,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5081 states to 5081 states and 24149 transitions. [2021-05-22 02:07:50,124 INFO L78 Accepts]: Start accepts. Automaton has 5081 states and 24149 transitions. Word has length 29 [2021-05-22 02:07:50,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:50,124 INFO L482 AbstractCegarLoop]: Abstraction has 5081 states and 24149 transitions. [2021-05-22 02:07:50,124 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:50,124 INFO L276 IsEmpty]: Start isEmpty. Operand 5081 states and 24149 transitions. [2021-05-22 02:07:50,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:50,132 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:50,132 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:50,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1252 [2021-05-22 02:07:50,132 INFO L430 AbstractCegarLoop]: === Iteration 1254 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:50,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:50,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1210645161, now seen corresponding path program 1249 times [2021-05-22 02:07:50,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:50,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078448373] [2021-05-22 02:07:50,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:50,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:50,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:50,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078448373] [2021-05-22 02:07:50,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078448373] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:50,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:50,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:50,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755521556] [2021-05-22 02:07:50,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:50,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:50,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:50,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:50,245 INFO L87 Difference]: Start difference. First operand 5081 states and 24149 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:50,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:50,353 INFO L93 Difference]: Finished difference Result 10482 states and 46943 transitions. [2021-05-22 02:07:50,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:50,353 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:50,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:50,378 INFO L225 Difference]: With dead ends: 10482 [2021-05-22 02:07:50,379 INFO L226 Difference]: Without dead ends: 10067 [2021-05-22 02:07:50,379 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:50,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10067 states. [2021-05-22 02:07:50,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10067 to 5165. [2021-05-22 02:07:50,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.747676219984508) internal successors, (24517), 5164 states have internal predecessors, (24517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:50,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24517 transitions. [2021-05-22 02:07:50,605 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24517 transitions. Word has length 29 [2021-05-22 02:07:50,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:50,605 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24517 transitions. [2021-05-22 02:07:50,605 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:50,605 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24517 transitions. [2021-05-22 02:07:50,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:50,613 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:50,613 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:50,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1253 [2021-05-22 02:07:50,613 INFO L430 AbstractCegarLoop]: === Iteration 1255 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:50,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:50,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1927308107, now seen corresponding path program 1250 times [2021-05-22 02:07:50,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:50,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701756997] [2021-05-22 02:07:50,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:50,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:50,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:50,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701756997] [2021-05-22 02:07:50,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701756997] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:50,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:50,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:50,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902668439] [2021-05-22 02:07:50,727 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:50,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:50,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:50,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:50,727 INFO L87 Difference]: Start difference. First operand 5165 states and 24517 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:50,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:50,835 INFO L93 Difference]: Finished difference Result 10544 states and 47164 transitions. [2021-05-22 02:07:50,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:50,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:50,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:50,860 INFO L225 Difference]: With dead ends: 10544 [2021-05-22 02:07:50,860 INFO L226 Difference]: Without dead ends: 10019 [2021-05-22 02:07:50,860 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:50,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10019 states. [2021-05-22 02:07:51,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10019 to 5117. [2021-05-22 02:07:51,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.75312744331509) internal successors, (24317), 5116 states have internal predecessors, (24317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:51,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24317 transitions. [2021-05-22 02:07:51,084 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24317 transitions. Word has length 29 [2021-05-22 02:07:51,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:51,084 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24317 transitions. [2021-05-22 02:07:51,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:51,084 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24317 transitions. [2021-05-22 02:07:51,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:51,092 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:51,092 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:51,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1254 [2021-05-22 02:07:51,092 INFO L430 AbstractCegarLoop]: === Iteration 1256 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:51,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:51,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1991351639, now seen corresponding path program 1251 times [2021-05-22 02:07:51,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:51,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137873919] [2021-05-22 02:07:51,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:51,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:51,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:51,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137873919] [2021-05-22 02:07:51,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137873919] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:51,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:51,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:51,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147350652] [2021-05-22 02:07:51,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:51,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:51,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:51,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:51,208 INFO L87 Difference]: Start difference. First operand 5117 states and 24317 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:51,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:51,328 INFO L93 Difference]: Finished difference Result 10480 states and 46914 transitions. [2021-05-22 02:07:51,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:51,329 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:51,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:51,354 INFO L225 Difference]: With dead ends: 10480 [2021-05-22 02:07:51,355 INFO L226 Difference]: Without dead ends: 10065 [2021-05-22 02:07:51,355 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:51,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10065 states. [2021-05-22 02:07:51,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10065 to 5165. [2021-05-22 02:07:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.7430286599535245) internal successors, (24493), 5164 states have internal predecessors, (24493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:51,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24493 transitions. [2021-05-22 02:07:51,576 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24493 transitions. Word has length 29 [2021-05-22 02:07:51,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:51,576 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24493 transitions. [2021-05-22 02:07:51,576 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:51,576 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24493 transitions. [2021-05-22 02:07:51,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:51,584 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:51,584 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:51,584 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1255 [2021-05-22 02:07:51,584 INFO L430 AbstractCegarLoop]: === Iteration 1257 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:51,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:51,584 INFO L82 PathProgramCache]: Analyzing trace with hash -961786263, now seen corresponding path program 1252 times [2021-05-22 02:07:51,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:51,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957198963] [2021-05-22 02:07:51,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:51,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:51,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:51,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957198963] [2021-05-22 02:07:51,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957198963] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:51,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:51,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:51,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516244968] [2021-05-22 02:07:51,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:51,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:51,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:51,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:51,701 INFO L87 Difference]: Start difference. First operand 5165 states and 24493 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:51,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:51,823 INFO L93 Difference]: Finished difference Result 10540 states and 47130 transitions. [2021-05-22 02:07:51,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:51,823 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:51,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:51,849 INFO L225 Difference]: With dead ends: 10540 [2021-05-22 02:07:51,849 INFO L226 Difference]: Without dead ends: 10017 [2021-05-22 02:07:51,849 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:51,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10017 states. [2021-05-22 02:07:52,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10017 to 5117. [2021-05-22 02:07:52,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.748436278342455) internal successors, (24293), 5116 states have internal predecessors, (24293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:52,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24293 transitions. [2021-05-22 02:07:52,074 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24293 transitions. Word has length 29 [2021-05-22 02:07:52,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:52,074 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24293 transitions. [2021-05-22 02:07:52,074 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:52,074 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24293 transitions. [2021-05-22 02:07:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:52,082 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:52,082 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:52,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1256 [2021-05-22 02:07:52,082 INFO L430 AbstractCegarLoop]: === Iteration 1258 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:52,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:52,082 INFO L82 PathProgramCache]: Analyzing trace with hash -787859829, now seen corresponding path program 1253 times [2021-05-22 02:07:52,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:52,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190397695] [2021-05-22 02:07:52,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:52,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:52,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:52,188 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190397695] [2021-05-22 02:07:52,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190397695] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:52,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:52,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:52,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579422848] [2021-05-22 02:07:52,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:52,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:52,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:52,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:52,189 INFO L87 Difference]: Start difference. First operand 5117 states and 24293 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:52,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:52,289 INFO L93 Difference]: Finished difference Result 10634 states and 47575 transitions. [2021-05-22 02:07:52,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:52,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:52,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:52,316 INFO L225 Difference]: With dead ends: 10634 [2021-05-22 02:07:52,317 INFO L226 Difference]: Without dead ends: 10157 [2021-05-22 02:07:52,317 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:52,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10157 states. [2021-05-22 02:07:52,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10157 to 5195. [2021-05-22 02:07:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.7335386984982675) internal successors, (24586), 5194 states have internal predecessors, (24586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:52,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24586 transitions. [2021-05-22 02:07:52,621 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24586 transitions. Word has length 29 [2021-05-22 02:07:52,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:52,621 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24586 transitions. [2021-05-22 02:07:52,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:52,621 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24586 transitions. [2021-05-22 02:07:52,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:52,629 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:52,629 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:52,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1257 [2021-05-22 02:07:52,630 INFO L430 AbstractCegarLoop]: === Iteration 1259 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:52,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:52,630 INFO L82 PathProgramCache]: Analyzing trace with hash 2114962921, now seen corresponding path program 1254 times [2021-05-22 02:07:52,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:52,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909807321] [2021-05-22 02:07:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:52,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:52,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:52,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909807321] [2021-05-22 02:07:52,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909807321] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:52,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:52,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:52,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924831923] [2021-05-22 02:07:52,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:52,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:52,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:52,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:52,733 INFO L87 Difference]: Start difference. First operand 5195 states and 24586 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:52,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:52,832 INFO L93 Difference]: Finished difference Result 10632 states and 47492 transitions. [2021-05-22 02:07:52,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:52,832 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:52,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:52,857 INFO L225 Difference]: With dead ends: 10632 [2021-05-22 02:07:52,857 INFO L226 Difference]: Without dead ends: 10055 [2021-05-22 02:07:52,857 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:52,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10055 states. [2021-05-22 02:07:53,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10055 to 5093. [2021-05-22 02:07:53,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 5092 states have (on average 4.753534956794972) internal successors, (24205), 5092 states have internal predecessors, (24205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:53,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 24205 transitions. [2021-05-22 02:07:53,064 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 24205 transitions. Word has length 29 [2021-05-22 02:07:53,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:53,064 INFO L482 AbstractCegarLoop]: Abstraction has 5093 states and 24205 transitions. [2021-05-22 02:07:53,064 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:53,064 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 24205 transitions. [2021-05-22 02:07:53,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:53,072 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:53,072 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:53,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1258 [2021-05-22 02:07:53,072 INFO L430 AbstractCegarLoop]: === Iteration 1260 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:53,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:53,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1695615879, now seen corresponding path program 1255 times [2021-05-22 02:07:53,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:53,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430286683] [2021-05-22 02:07:53,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:53,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:53,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:53,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430286683] [2021-05-22 02:07:53,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430286683] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:53,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:53,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:53,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702668731] [2021-05-22 02:07:53,183 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:53,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:53,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:53,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:53,184 INFO L87 Difference]: Start difference. First operand 5093 states and 24205 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:53,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:53,286 INFO L93 Difference]: Finished difference Result 10416 states and 46644 transitions. [2021-05-22 02:07:53,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:53,287 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:53,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:53,311 INFO L225 Difference]: With dead ends: 10416 [2021-05-22 02:07:53,311 INFO L226 Difference]: Without dead ends: 10001 [2021-05-22 02:07:53,312 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:53,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10001 states. [2021-05-22 02:07:53,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10001 to 5165. [2021-05-22 02:07:53,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.745352439969016) internal successors, (24505), 5164 states have internal predecessors, (24505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:53,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24505 transitions. [2021-05-22 02:07:53,539 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24505 transitions. Word has length 29 [2021-05-22 02:07:53,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:53,539 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24505 transitions. [2021-05-22 02:07:53,539 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:53,539 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24505 transitions. [2021-05-22 02:07:53,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:53,548 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:53,548 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:53,548 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1259 [2021-05-22 02:07:53,548 INFO L430 AbstractCegarLoop]: === Iteration 1261 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:53,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:53,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1882688471, now seen corresponding path program 1256 times [2021-05-22 02:07:53,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:53,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061218193] [2021-05-22 02:07:53,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:53,659 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:53,659 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061218193] [2021-05-22 02:07:53,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061218193] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:53,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:53,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:53,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345693103] [2021-05-22 02:07:53,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:53,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:53,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:53,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:53,659 INFO L87 Difference]: Start difference. First operand 5165 states and 24505 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:53,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:53,760 INFO L93 Difference]: Finished difference Result 10478 states and 46865 transitions. [2021-05-22 02:07:53,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:53,760 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:53,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:53,784 INFO L225 Difference]: With dead ends: 10478 [2021-05-22 02:07:53,784 INFO L226 Difference]: Without dead ends: 9953 [2021-05-22 02:07:53,784 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:53,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9953 states. [2021-05-22 02:07:53,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9953 to 5117. [2021-05-22 02:07:54,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.750781860828773) internal successors, (24305), 5116 states have internal predecessors, (24305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:54,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24305 transitions. [2021-05-22 02:07:54,015 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24305 transitions. Word has length 29 [2021-05-22 02:07:54,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:54,016 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24305 transitions. [2021-05-22 02:07:54,016 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:54,016 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24305 transitions. [2021-05-22 02:07:54,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:54,024 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:54,024 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:54,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1260 [2021-05-22 02:07:54,024 INFO L430 AbstractCegarLoop]: === Iteration 1262 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:54,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:54,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1665523031, now seen corresponding path program 1257 times [2021-05-22 02:07:54,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:54,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087601045] [2021-05-22 02:07:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:54,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:54,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087601045] [2021-05-22 02:07:54,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087601045] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:54,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:54,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:54,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430190045] [2021-05-22 02:07:54,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:54,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:54,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:54,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:54,127 INFO L87 Difference]: Start difference. First operand 5117 states and 24305 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:54,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:54,232 INFO L93 Difference]: Finished difference Result 10306 states and 46175 transitions. [2021-05-22 02:07:54,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:54,233 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:54,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:54,259 INFO L225 Difference]: With dead ends: 10306 [2021-05-22 02:07:54,259 INFO L226 Difference]: Without dead ends: 9891 [2021-05-22 02:07:54,259 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:54,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9891 states. [2021-05-22 02:07:54,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9891 to 5165. [2021-05-22 02:07:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.740704879938033) internal successors, (24481), 5164 states have internal predecessors, (24481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:54,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24481 transitions. [2021-05-22 02:07:54,488 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24481 transitions. Word has length 29 [2021-05-22 02:07:54,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:54,488 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24481 transitions. [2021-05-22 02:07:54,488 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:54,488 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24481 transitions. [2021-05-22 02:07:54,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:54,497 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:54,497 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:54,497 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1261 [2021-05-22 02:07:54,497 INFO L430 AbstractCegarLoop]: === Iteration 1263 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:54,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:54,497 INFO L82 PathProgramCache]: Analyzing trace with hash -110899607, now seen corresponding path program 1258 times [2021-05-22 02:07:54,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:54,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826663120] [2021-05-22 02:07:54,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:54,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:54,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:54,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826663120] [2021-05-22 02:07:54,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826663120] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:54,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:54,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:54,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743464594] [2021-05-22 02:07:54,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:54,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:54,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:54,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:54,600 INFO L87 Difference]: Start difference. First operand 5165 states and 24481 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:54,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:54,711 INFO L93 Difference]: Finished difference Result 10034 states and 45166 transitions. [2021-05-22 02:07:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:54,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:54,736 INFO L225 Difference]: With dead ends: 10034 [2021-05-22 02:07:54,736 INFO L226 Difference]: Without dead ends: 9523 [2021-05-22 02:07:54,736 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:54,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9523 states. [2021-05-22 02:07:54,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9523 to 5117. [2021-05-22 02:07:54,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.746090695856138) internal successors, (24281), 5116 states have internal predecessors, (24281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:54,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24281 transitions. [2021-05-22 02:07:54,956 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24281 transitions. Word has length 29 [2021-05-22 02:07:54,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:54,956 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24281 transitions. [2021-05-22 02:07:54,956 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:54,956 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24281 transitions. [2021-05-22 02:07:54,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:54,964 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:54,964 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:54,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1262 [2021-05-22 02:07:54,964 INFO L430 AbstractCegarLoop]: === Iteration 1264 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:54,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:54,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1281370485, now seen corresponding path program 1259 times [2021-05-22 02:07:54,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:54,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682433623] [2021-05-22 02:07:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:55,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:55,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:55,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682433623] [2021-05-22 02:07:55,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682433623] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:55,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:55,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:55,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263774484] [2021-05-22 02:07:55,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:55,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:55,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:55,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:55,078 INFO L87 Difference]: Start difference. First operand 5117 states and 24281 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:55,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:55,184 INFO L93 Difference]: Finished difference Result 10392 states and 46544 transitions. [2021-05-22 02:07:55,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:55,184 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:55,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:55,209 INFO L225 Difference]: With dead ends: 10392 [2021-05-22 02:07:55,209 INFO L226 Difference]: Without dead ends: 9915 [2021-05-22 02:07:55,210 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:55,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9915 states. [2021-05-22 02:07:55,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9915 to 5189. [2021-05-22 02:07:55,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 4.733423284502699) internal successors, (24557), 5188 states have internal predecessors, (24557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:55,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 24557 transitions. [2021-05-22 02:07:55,440 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 24557 transitions. Word has length 29 [2021-05-22 02:07:55,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:55,440 INFO L482 AbstractCegarLoop]: Abstraction has 5189 states and 24557 transitions. [2021-05-22 02:07:55,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:55,440 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 24557 transitions. [2021-05-22 02:07:55,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:55,449 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:55,449 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:55,449 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1263 [2021-05-22 02:07:55,449 INFO L430 AbstractCegarLoop]: === Iteration 1265 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:55,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:55,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1371130135, now seen corresponding path program 1260 times [2021-05-22 02:07:55,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:55,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451616264] [2021-05-22 02:07:55,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:55,563 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:55,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451616264] [2021-05-22 02:07:55,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451616264] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:55,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:55,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:55,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915048018] [2021-05-22 02:07:55,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:55,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:55,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:55,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:55,564 INFO L87 Difference]: Start difference. First operand 5189 states and 24557 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:55,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:55,668 INFO L93 Difference]: Finished difference Result 10058 states and 45242 transitions. [2021-05-22 02:07:55,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:55,668 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:55,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:55,691 INFO L225 Difference]: With dead ends: 10058 [2021-05-22 02:07:55,691 INFO L226 Difference]: Without dead ends: 9499 [2021-05-22 02:07:55,691 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:55,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9499 states. [2021-05-22 02:07:55,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9499 to 5093. [2021-05-22 02:07:55,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 5092 states have (on average 4.751178318931657) internal successors, (24193), 5092 states have internal predecessors, (24193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 24193 transitions. [2021-05-22 02:07:55,912 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 24193 transitions. Word has length 29 [2021-05-22 02:07:55,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:55,913 INFO L482 AbstractCegarLoop]: Abstraction has 5093 states and 24193 transitions. [2021-05-22 02:07:55,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:55,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 24193 transitions. [2021-05-22 02:07:55,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:55,921 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:55,921 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:55,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1264 [2021-05-22 02:07:55,921 INFO L430 AbstractCegarLoop]: === Iteration 1266 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:55,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:55,921 INFO L82 PathProgramCache]: Analyzing trace with hash 2113120937, now seen corresponding path program 1261 times [2021-05-22 02:07:55,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:55,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208039710] [2021-05-22 02:07:55,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:56,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:56,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208039710] [2021-05-22 02:07:56,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208039710] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:56,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:56,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:56,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978742866] [2021-05-22 02:07:56,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:56,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:56,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:56,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:56,027 INFO L87 Difference]: Start difference. First operand 5093 states and 24193 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:56,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:56,131 INFO L93 Difference]: Finished difference Result 10412 states and 46622 transitions. [2021-05-22 02:07:56,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:56,131 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:56,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:56,157 INFO L225 Difference]: With dead ends: 10412 [2021-05-22 02:07:56,157 INFO L226 Difference]: Without dead ends: 9997 [2021-05-22 02:07:56,157 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:56,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9997 states. [2021-05-22 02:07:56,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9997 to 5165. [2021-05-22 02:07:56,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.7430286599535245) internal successors, (24493), 5164 states have internal predecessors, (24493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24493 transitions. [2021-05-22 02:07:56,383 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24493 transitions. Word has length 29 [2021-05-22 02:07:56,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:56,383 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24493 transitions. [2021-05-22 02:07:56,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:56,383 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24493 transitions. [2021-05-22 02:07:56,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:56,392 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:56,392 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:56,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1265 [2021-05-22 02:07:56,392 INFO L430 AbstractCegarLoop]: === Iteration 1267 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:56,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:56,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1152280983, now seen corresponding path program 1262 times [2021-05-22 02:07:56,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:56,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916020702] [2021-05-22 02:07:56,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:56,497 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:56,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916020702] [2021-05-22 02:07:56,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916020702] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:56,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:56,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:56,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231748563] [2021-05-22 02:07:56,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:56,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:56,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:56,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:56,498 INFO L87 Difference]: Start difference. First operand 5165 states and 24493 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:56,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:56,602 INFO L93 Difference]: Finished difference Result 10472 states and 46838 transitions. [2021-05-22 02:07:56,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:56,603 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:56,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:56,628 INFO L225 Difference]: With dead ends: 10472 [2021-05-22 02:07:56,628 INFO L226 Difference]: Without dead ends: 9949 [2021-05-22 02:07:56,629 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:56,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9949 states. [2021-05-22 02:07:56,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9949 to 5117. [2021-05-22 02:07:56,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.748436278342455) internal successors, (24293), 5116 states have internal predecessors, (24293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:56,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24293 transitions. [2021-05-22 02:07:56,858 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24293 transitions. Word has length 29 [2021-05-22 02:07:56,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:56,858 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24293 transitions. [2021-05-22 02:07:56,858 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:56,858 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24293 transitions. [2021-05-22 02:07:56,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:56,866 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:56,866 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:56,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1266 [2021-05-22 02:07:56,867 INFO L430 AbstractCegarLoop]: === Iteration 1268 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:56,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:56,867 INFO L82 PathProgramCache]: Analyzing trace with hash 80108295, now seen corresponding path program 1263 times [2021-05-22 02:07:56,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:56,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241505951] [2021-05-22 02:07:56,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:56,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:56,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241505951] [2021-05-22 02:07:56,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241505951] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:56,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:56,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:56,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916729878] [2021-05-22 02:07:56,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:56,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:56,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:56,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:56,961 INFO L87 Difference]: Start difference. First operand 5117 states and 24293 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:57,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:57,080 INFO L93 Difference]: Finished difference Result 10304 states and 46158 transitions. [2021-05-22 02:07:57,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:57,080 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:57,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:57,105 INFO L225 Difference]: With dead ends: 10304 [2021-05-22 02:07:57,105 INFO L226 Difference]: Without dead ends: 9889 [2021-05-22 02:07:57,105 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:57,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9889 states. [2021-05-22 02:07:57,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9889 to 5165. [2021-05-22 02:07:57,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.738381099922541) internal successors, (24469), 5164 states have internal predecessors, (24469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:57,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24469 transitions. [2021-05-22 02:07:57,318 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24469 transitions. Word has length 29 [2021-05-22 02:07:57,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:57,318 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24469 transitions. [2021-05-22 02:07:57,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:57,318 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24469 transitions. [2021-05-22 02:07:57,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:57,325 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:57,325 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:57,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1267 [2021-05-22 02:07:57,326 INFO L430 AbstractCegarLoop]: === Iteration 1269 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:57,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:57,326 INFO L82 PathProgramCache]: Analyzing trace with hash -2033240471, now seen corresponding path program 1264 times [2021-05-22 02:07:57,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:57,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667660747] [2021-05-22 02:07:57,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:57,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:57,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:57,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667660747] [2021-05-22 02:07:57,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667660747] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:57,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:57,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:57,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051625339] [2021-05-22 02:07:57,422 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:57,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:57,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:57,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:57,422 INFO L87 Difference]: Start difference. First operand 5165 states and 24469 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:57,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:57,532 INFO L93 Difference]: Finished difference Result 10032 states and 45149 transitions. [2021-05-22 02:07:57,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:57,532 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:57,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:57,557 INFO L225 Difference]: With dead ends: 10032 [2021-05-22 02:07:57,557 INFO L226 Difference]: Without dead ends: 9521 [2021-05-22 02:07:57,557 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:57,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9521 states. [2021-05-22 02:07:57,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9521 to 5117. [2021-05-22 02:07:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.74374511336982) internal successors, (24269), 5116 states have internal predecessors, (24269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:57,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24269 transitions. [2021-05-22 02:07:57,781 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24269 transitions. Word has length 29 [2021-05-22 02:07:57,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:57,781 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24269 transitions. [2021-05-22 02:07:57,781 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:57,781 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24269 transitions. [2021-05-22 02:07:57,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:57,789 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:57,789 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:57,790 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1268 [2021-05-22 02:07:57,790 INFO L430 AbstractCegarLoop]: === Iteration 1270 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:57,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:57,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1807789527, now seen corresponding path program 1265 times [2021-05-22 02:07:57,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:57,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769323766] [2021-05-22 02:07:57,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:57,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:57,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769323766] [2021-05-22 02:07:57,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769323766] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:57,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:57,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:57,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205026923] [2021-05-22 02:07:57,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:57,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:57,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:57,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:57,883 INFO L87 Difference]: Start difference. First operand 5117 states and 24269 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:57,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:57,993 INFO L93 Difference]: Finished difference Result 10388 states and 46522 transitions. [2021-05-22 02:07:57,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:57,994 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:57,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:58,020 INFO L225 Difference]: With dead ends: 10388 [2021-05-22 02:07:58,020 INFO L226 Difference]: Without dead ends: 9913 [2021-05-22 02:07:58,020 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:58,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9913 states. [2021-05-22 02:07:58,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9913 to 5189. [2021-05-22 02:07:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 4.7311102544333075) internal successors, (24545), 5188 states have internal predecessors, (24545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:58,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 24545 transitions. [2021-05-22 02:07:58,248 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 24545 transitions. Word has length 29 [2021-05-22 02:07:58,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:58,249 INFO L482 AbstractCegarLoop]: Abstraction has 5189 states and 24545 transitions. [2021-05-22 02:07:58,249 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:58,249 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 24545 transitions. [2021-05-22 02:07:58,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:58,257 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:58,257 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:58,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1269 [2021-05-22 02:07:58,257 INFO L430 AbstractCegarLoop]: === Iteration 1271 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:58,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:58,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1095033223, now seen corresponding path program 1266 times [2021-05-22 02:07:58,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:58,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198786655] [2021-05-22 02:07:58,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:58,352 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:58,352 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198786655] [2021-05-22 02:07:58,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198786655] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:58,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:58,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:58,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321882074] [2021-05-22 02:07:58,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:58,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:58,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:58,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:58,353 INFO L87 Difference]: Start difference. First operand 5189 states and 24545 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:58,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:58,458 INFO L93 Difference]: Finished difference Result 10056 states and 45225 transitions. [2021-05-22 02:07:58,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:58,458 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:58,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:58,482 INFO L225 Difference]: With dead ends: 10056 [2021-05-22 02:07:58,482 INFO L226 Difference]: Without dead ends: 9497 [2021-05-22 02:07:58,482 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:58,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9497 states. [2021-05-22 02:07:58,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9497 to 5093. [2021-05-22 02:07:58,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 5092 states have (on average 4.748821681068343) internal successors, (24181), 5092 states have internal predecessors, (24181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:58,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 24181 transitions. [2021-05-22 02:07:58,705 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 24181 transitions. Word has length 29 [2021-05-22 02:07:58,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:58,705 INFO L482 AbstractCegarLoop]: Abstraction has 5093 states and 24181 transitions. [2021-05-22 02:07:58,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:58,706 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 24181 transitions. [2021-05-22 02:07:58,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:58,714 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:58,714 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:58,714 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1270 [2021-05-22 02:07:58,714 INFO L430 AbstractCegarLoop]: === Iteration 1272 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:58,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:58,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1601698251, now seen corresponding path program 1267 times [2021-05-22 02:07:58,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:58,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856736495] [2021-05-22 02:07:58,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:58,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:58,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:58,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856736495] [2021-05-22 02:07:58,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856736495] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:58,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:58,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:58,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204516335] [2021-05-22 02:07:58,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:58,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:58,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:58,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:58,808 INFO L87 Difference]: Start difference. First operand 5093 states and 24181 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:58,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:58,911 INFO L93 Difference]: Finished difference Result 10664 states and 47756 transitions. [2021-05-22 02:07:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:58,911 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:58,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:58,938 INFO L225 Difference]: With dead ends: 10664 [2021-05-22 02:07:58,939 INFO L226 Difference]: Without dead ends: 10187 [2021-05-22 02:07:58,939 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:59,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10187 states. [2021-05-22 02:07:59,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10187 to 5207. [2021-05-22 02:07:59,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5207 states, 5206 states have (on average 4.737994621590473) internal successors, (24666), 5206 states have internal predecessors, (24666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:59,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5207 states to 5207 states and 24666 transitions. [2021-05-22 02:07:59,171 INFO L78 Accepts]: Start accepts. Automaton has 5207 states and 24666 transitions. Word has length 29 [2021-05-22 02:07:59,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:59,171 INFO L482 AbstractCegarLoop]: Abstraction has 5207 states and 24666 transitions. [2021-05-22 02:07:59,171 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:59,171 INFO L276 IsEmpty]: Start isEmpty. Operand 5207 states and 24666 transitions. [2021-05-22 02:07:59,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:59,180 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:59,180 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:59,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1271 [2021-05-22 02:07:59,180 INFO L430 AbstractCegarLoop]: === Iteration 1273 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:59,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:59,180 INFO L82 PathProgramCache]: Analyzing trace with hash 209553705, now seen corresponding path program 1268 times [2021-05-22 02:07:59,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:59,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180061475] [2021-05-22 02:07:59,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:59,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:59,274 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180061475] [2021-05-22 02:07:59,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180061475] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:59,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:59,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:59,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613590761] [2021-05-22 02:07:59,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:59,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:59,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:59,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:59,275 INFO L87 Difference]: Start difference. First operand 5207 states and 24666 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:59,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:59,385 INFO L93 Difference]: Finished difference Result 10662 states and 47673 transitions. [2021-05-22 02:07:59,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:59,385 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:59,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:59,411 INFO L225 Difference]: With dead ends: 10662 [2021-05-22 02:07:59,412 INFO L226 Difference]: Without dead ends: 10109 [2021-05-22 02:07:59,412 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:07:59,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10109 states. [2021-05-22 02:07:59,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10109 to 5129. [2021-05-22 02:07:59,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.745904836193448) internal successors, (24337), 5128 states have internal predecessors, (24337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:59,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24337 transitions. [2021-05-22 02:07:59,644 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24337 transitions. Word has length 29 [2021-05-22 02:07:59,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:07:59,644 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24337 transitions. [2021-05-22 02:07:59,644 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:59,644 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24337 transitions. [2021-05-22 02:07:59,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:07:59,653 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:07:59,653 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:07:59,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1272 [2021-05-22 02:07:59,653 INFO L430 AbstractCegarLoop]: === Iteration 1274 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:07:59,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:07:59,653 INFO L82 PathProgramCache]: Analyzing trace with hash -514381399, now seen corresponding path program 1269 times [2021-05-22 02:07:59,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:07:59,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453878619] [2021-05-22 02:07:59,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:07:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:07:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:07:59,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:07:59,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453878619] [2021-05-22 02:07:59,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453878619] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:07:59,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:07:59,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:07:59,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848076481] [2021-05-22 02:07:59,759 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:07:59,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:07:59,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:07:59,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:07:59,760 INFO L87 Difference]: Start difference. First operand 5129 states and 24337 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:07:59,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:07:59,868 INFO L93 Difference]: Finished difference Result 10488 states and 46988 transitions. [2021-05-22 02:07:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:07:59,868 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:07:59,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:07:59,894 INFO L225 Difference]: With dead ends: 10488 [2021-05-22 02:07:59,894 INFO L226 Difference]: Without dead ends: 10011 [2021-05-22 02:07:59,894 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:00,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10011 states. [2021-05-22 02:08:00,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10011 to 5201. [2021-05-22 02:08:00,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 4.73326923076923) internal successors, (24613), 5200 states have internal predecessors, (24613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 24613 transitions. [2021-05-22 02:08:00,120 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 24613 transitions. Word has length 29 [2021-05-22 02:08:00,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:00,120 INFO L482 AbstractCegarLoop]: Abstraction has 5201 states and 24613 transitions. [2021-05-22 02:08:00,120 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:00,120 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 24613 transitions. [2021-05-22 02:08:00,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:00,129 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:00,129 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:00,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1273 [2021-05-22 02:08:00,129 INFO L430 AbstractCegarLoop]: === Iteration 1275 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:00,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:00,129 INFO L82 PathProgramCache]: Analyzing trace with hash 692599337, now seen corresponding path program 1270 times [2021-05-22 02:08:00,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:00,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102399235] [2021-05-22 02:08:00,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:00,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:00,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:00,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102399235] [2021-05-22 02:08:00,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102399235] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:00,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:00,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:00,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842447147] [2021-05-22 02:08:00,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:00,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:00,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:00,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:00,235 INFO L87 Difference]: Start difference. First operand 5201 states and 24613 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:00,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:00,341 INFO L93 Difference]: Finished difference Result 10154 states and 45686 transitions. [2021-05-22 02:08:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:00,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:00,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:00,366 INFO L225 Difference]: With dead ends: 10154 [2021-05-22 02:08:00,366 INFO L226 Difference]: Without dead ends: 9619 [2021-05-22 02:08:00,366 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:00,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9619 states. [2021-05-22 02:08:00,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9619 to 5129. [2021-05-22 02:08:00,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.738884555382215) internal successors, (24301), 5128 states have internal predecessors, (24301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:00,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24301 transitions. [2021-05-22 02:08:00,594 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24301 transitions. Word has length 29 [2021-05-22 02:08:00,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:00,594 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24301 transitions. [2021-05-22 02:08:00,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:00,594 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24301 transitions. [2021-05-22 02:08:00,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:00,603 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:00,603 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:00,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1274 [2021-05-22 02:08:00,603 INFO L430 AbstractCegarLoop]: === Iteration 1276 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:00,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:00,603 INFO L82 PathProgramCache]: Analyzing trace with hash -150124025, now seen corresponding path program 1271 times [2021-05-22 02:08:00,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:00,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807433311] [2021-05-22 02:08:00,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:00,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:00,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807433311] [2021-05-22 02:08:00,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807433311] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:00,699 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:00,699 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:00,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828635861] [2021-05-22 02:08:00,699 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:00,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:00,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:00,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:00,699 INFO L87 Difference]: Start difference. First operand 5129 states and 24301 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:00,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:00,809 INFO L93 Difference]: Finished difference Result 10486 states and 46947 transitions. [2021-05-22 02:08:00,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:00,810 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:00,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:00,834 INFO L225 Difference]: With dead ends: 10486 [2021-05-22 02:08:00,835 INFO L226 Difference]: Without dead ends: 10011 [2021-05-22 02:08:00,835 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:00,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10011 states. [2021-05-22 02:08:01,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10011 to 5201. [2021-05-22 02:08:01,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 4.726346153846154) internal successors, (24577), 5200 states have internal predecessors, (24577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:01,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 24577 transitions. [2021-05-22 02:08:01,059 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 24577 transitions. Word has length 29 [2021-05-22 02:08:01,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:01,059 INFO L482 AbstractCegarLoop]: Abstraction has 5201 states and 24577 transitions. [2021-05-22 02:08:01,060 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:01,060 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 24577 transitions. [2021-05-22 02:08:01,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:01,068 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:01,068 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:01,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1275 [2021-05-22 02:08:01,068 INFO L430 AbstractCegarLoop]: === Iteration 1277 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:01,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:01,068 INFO L82 PathProgramCache]: Analyzing trace with hash -356931991, now seen corresponding path program 1272 times [2021-05-22 02:08:01,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:01,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275433792] [2021-05-22 02:08:01,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:01,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:01,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:01,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275433792] [2021-05-22 02:08:01,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275433792] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:01,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:01,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:01,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042848727] [2021-05-22 02:08:01,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:01,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:01,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:01,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:01,162 INFO L87 Difference]: Start difference. First operand 5201 states and 24577 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:01,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:01,273 INFO L93 Difference]: Finished difference Result 10154 states and 45650 transitions. [2021-05-22 02:08:01,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:01,273 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:01,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:01,297 INFO L225 Difference]: With dead ends: 10154 [2021-05-22 02:08:01,297 INFO L226 Difference]: Without dead ends: 9571 [2021-05-22 02:08:01,297 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:01,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9571 states. [2021-05-22 02:08:01,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9571 to 5081. [2021-05-22 02:08:01,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5081 states, 5080 states have (on average 4.752952755905512) internal successors, (24145), 5080 states have internal predecessors, (24145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:01,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5081 states to 5081 states and 24145 transitions. [2021-05-22 02:08:01,525 INFO L78 Accepts]: Start accepts. Automaton has 5081 states and 24145 transitions. Word has length 29 [2021-05-22 02:08:01,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:01,525 INFO L482 AbstractCegarLoop]: Abstraction has 5081 states and 24145 transitions. [2021-05-22 02:08:01,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:01,525 INFO L276 IsEmpty]: Start isEmpty. Operand 5081 states and 24145 transitions. [2021-05-22 02:08:01,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:01,534 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:01,534 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:01,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1276 [2021-05-22 02:08:01,534 INFO L430 AbstractCegarLoop]: === Iteration 1278 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:01,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:01,534 INFO L82 PathProgramCache]: Analyzing trace with hash 320663051, now seen corresponding path program 1273 times [2021-05-22 02:08:01,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:01,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141014181] [2021-05-22 02:08:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:01,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:01,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:01,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141014181] [2021-05-22 02:08:01,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141014181] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:01,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:01,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:01,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105022544] [2021-05-22 02:08:01,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:01,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:01,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:01,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:01,644 INFO L87 Difference]: Start difference. First operand 5081 states and 24145 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:01,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:01,752 INFO L93 Difference]: Finished difference Result 10132 states and 45294 transitions. [2021-05-22 02:08:01,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:01,752 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:01,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:01,778 INFO L225 Difference]: With dead ends: 10132 [2021-05-22 02:08:01,778 INFO L226 Difference]: Without dead ends: 9717 [2021-05-22 02:08:01,778 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:01,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9717 states. [2021-05-22 02:08:01,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9717 to 5137. [2021-05-22 02:08:01,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.747079439252336) internal successors, (24381), 5136 states have internal predecessors, (24381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:02,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24381 transitions. [2021-05-22 02:08:02,007 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24381 transitions. Word has length 29 [2021-05-22 02:08:02,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:02,008 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24381 transitions. [2021-05-22 02:08:02,008 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:02,008 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24381 transitions. [2021-05-22 02:08:02,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:02,016 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:02,016 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:02,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1277 [2021-05-22 02:08:02,016 INFO L430 AbstractCegarLoop]: === Iteration 1279 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:02,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:02,017 INFO L82 PathProgramCache]: Analyzing trace with hash 732071047, now seen corresponding path program 1274 times [2021-05-22 02:08:02,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:02,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707123089] [2021-05-22 02:08:02,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:02,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:02,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:02,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707123089] [2021-05-22 02:08:02,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707123089] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:02,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:02,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:02,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525760670] [2021-05-22 02:08:02,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:02,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:02,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:02,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:02,127 INFO L87 Difference]: Start difference. First operand 5137 states and 24381 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:02,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:02,227 INFO L93 Difference]: Finished difference Result 10132 states and 45262 transitions. [2021-05-22 02:08:02,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:02,227 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:02,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:02,251 INFO L225 Difference]: With dead ends: 10132 [2021-05-22 02:08:02,251 INFO L226 Difference]: Without dead ends: 9685 [2021-05-22 02:08:02,252 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:02,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9685 states. [2021-05-22 02:08:02,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9685 to 5105. [2021-05-22 02:08:02,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.751763322884012) internal successors, (24253), 5104 states have internal predecessors, (24253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:02,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24253 transitions. [2021-05-22 02:08:02,477 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24253 transitions. Word has length 29 [2021-05-22 02:08:02,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:02,477 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24253 transitions. [2021-05-22 02:08:02,477 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:02,477 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24253 transitions. [2021-05-22 02:08:02,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:02,486 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:02,486 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:02,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1278 [2021-05-22 02:08:02,486 INFO L430 AbstractCegarLoop]: === Iteration 1280 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:02,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:02,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1702398487, now seen corresponding path program 1275 times [2021-05-22 02:08:02,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:02,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066109213] [2021-05-22 02:08:02,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:02,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:02,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:02,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066109213] [2021-05-22 02:08:02,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066109213] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:02,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:02,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:02,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205437136] [2021-05-22 02:08:02,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:02,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:02,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:02,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:02,609 INFO L87 Difference]: Start difference. First operand 5105 states and 24253 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:02,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:02,746 INFO L93 Difference]: Finished difference Result 10208 states and 45622 transitions. [2021-05-22 02:08:02,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:02,747 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:02,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:02,771 INFO L225 Difference]: With dead ends: 10208 [2021-05-22 02:08:02,772 INFO L226 Difference]: Without dead ends: 9793 [2021-05-22 02:08:02,772 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 173.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:02,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9793 states. [2021-05-22 02:08:02,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9793 to 5153. [2021-05-22 02:08:02,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.7416537267080745) internal successors, (24429), 5152 states have internal predecessors, (24429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:02,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24429 transitions. [2021-05-22 02:08:02,998 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24429 transitions. Word has length 29 [2021-05-22 02:08:02,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:02,998 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24429 transitions. [2021-05-22 02:08:02,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:02,998 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24429 transitions. [2021-05-22 02:08:03,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:03,007 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:03,007 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:03,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1279 [2021-05-22 02:08:03,007 INFO L430 AbstractCegarLoop]: === Iteration 1281 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:03,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:03,007 INFO L82 PathProgramCache]: Analyzing trace with hash 647219659, now seen corresponding path program 1276 times [2021-05-22 02:08:03,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:03,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053954631] [2021-05-22 02:08:03,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:03,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:03,126 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:03,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053954631] [2021-05-22 02:08:03,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053954631] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:03,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:03,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:03,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172585870] [2021-05-22 02:08:03,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:03,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:03,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:03,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:03,126 INFO L87 Difference]: Start difference. First operand 5153 states and 24429 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:03,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:03,240 INFO L93 Difference]: Finished difference Result 10268 states and 45838 transitions. [2021-05-22 02:08:03,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:03,240 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:03,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:03,266 INFO L225 Difference]: With dead ends: 10268 [2021-05-22 02:08:03,266 INFO L226 Difference]: Without dead ends: 9745 [2021-05-22 02:08:03,266 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:03,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9745 states. [2021-05-22 02:08:03,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9745 to 5105. [2021-05-22 02:08:03,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.748628526645768) internal successors, (24237), 5104 states have internal predecessors, (24237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:03,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24237 transitions. [2021-05-22 02:08:03,499 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24237 transitions. Word has length 29 [2021-05-22 02:08:03,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:03,499 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24237 transitions. [2021-05-22 02:08:03,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:03,499 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24237 transitions. [2021-05-22 02:08:03,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:03,507 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:03,507 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:03,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1280 [2021-05-22 02:08:03,508 INFO L430 AbstractCegarLoop]: === Iteration 1282 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:03,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:03,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1436613211, now seen corresponding path program 1277 times [2021-05-22 02:08:03,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:03,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251987671] [2021-05-22 02:08:03,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:03,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:03,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:03,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251987671] [2021-05-22 02:08:03,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251987671] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:03,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:03,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:03,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744443971] [2021-05-22 02:08:03,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:03,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:03,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:03,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:03,622 INFO L87 Difference]: Start difference. First operand 5105 states and 24237 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:03,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:03,726 INFO L93 Difference]: Finished difference Result 10208 states and 45606 transitions. [2021-05-22 02:08:03,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:03,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:03,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:03,751 INFO L225 Difference]: With dead ends: 10208 [2021-05-22 02:08:03,752 INFO L226 Difference]: Without dead ends: 9793 [2021-05-22 02:08:03,752 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:03,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9793 states. [2021-05-22 02:08:03,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9793 to 5153. [2021-05-22 02:08:03,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.738548136645963) internal successors, (24413), 5152 states have internal predecessors, (24413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:03,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24413 transitions. [2021-05-22 02:08:03,977 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24413 transitions. Word has length 29 [2021-05-22 02:08:03,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:03,978 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24413 transitions. [2021-05-22 02:08:03,978 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24413 transitions. [2021-05-22 02:08:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:03,986 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:03,986 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:03,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1281 [2021-05-22 02:08:03,986 INFO L430 AbstractCegarLoop]: === Iteration 1283 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:03,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:03,986 INFO L82 PathProgramCache]: Analyzing trace with hash -355550585, now seen corresponding path program 1278 times [2021-05-22 02:08:03,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:03,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212569196] [2021-05-22 02:08:03,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:04,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:04,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:04,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212569196] [2021-05-22 02:08:04,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212569196] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:04,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:04,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:04,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323637641] [2021-05-22 02:08:04,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:04,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:04,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:04,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:04,099 INFO L87 Difference]: Start difference. First operand 5153 states and 24413 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:04,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:04,216 INFO L93 Difference]: Finished difference Result 10268 states and 45822 transitions. [2021-05-22 02:08:04,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:04,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:04,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:04,240 INFO L225 Difference]: With dead ends: 10268 [2021-05-22 02:08:04,240 INFO L226 Difference]: Without dead ends: 9729 [2021-05-22 02:08:04,240 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:04,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9729 states. [2021-05-22 02:08:04,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9729 to 5089. [2021-05-22 02:08:04,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 4.752555031446541) internal successors, (24181), 5088 states have internal predecessors, (24181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:04,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 24181 transitions. [2021-05-22 02:08:04,464 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 24181 transitions. Word has length 29 [2021-05-22 02:08:04,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:04,464 INFO L482 AbstractCegarLoop]: Abstraction has 5089 states and 24181 transitions. [2021-05-22 02:08:04,464 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:04,464 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 24181 transitions. [2021-05-22 02:08:04,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:04,472 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:04,472 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:04,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1282 [2021-05-22 02:08:04,472 INFO L430 AbstractCegarLoop]: === Iteration 1284 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:04,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:04,472 INFO L82 PathProgramCache]: Analyzing trace with hash 805633769, now seen corresponding path program 1279 times [2021-05-22 02:08:04,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:04,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613852084] [2021-05-22 02:08:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:04,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:04,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:04,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613852084] [2021-05-22 02:08:04,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613852084] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:04,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:04,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:04,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782184401] [2021-05-22 02:08:04,571 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:04,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:04,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:04,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:04,571 INFO L87 Difference]: Start difference. First operand 5089 states and 24181 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:04,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:04,672 INFO L93 Difference]: Finished difference Result 10088 states and 45102 transitions. [2021-05-22 02:08:04,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:04,672 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:04,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:04,695 INFO L225 Difference]: With dead ends: 10088 [2021-05-22 02:08:04,695 INFO L226 Difference]: Without dead ends: 9673 [2021-05-22 02:08:04,695 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:04,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9673 states. [2021-05-22 02:08:04,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9673 to 5137. [2021-05-22 02:08:04,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.745521806853582) internal successors, (24373), 5136 states have internal predecessors, (24373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:04,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24373 transitions. [2021-05-22 02:08:04,910 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24373 transitions. Word has length 29 [2021-05-22 02:08:04,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:04,910 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24373 transitions. [2021-05-22 02:08:04,910 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:04,910 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24373 transitions. [2021-05-22 02:08:04,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:04,918 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:04,918 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:04,918 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1283 [2021-05-22 02:08:04,918 INFO L430 AbstractCegarLoop]: === Iteration 1285 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:04,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:04,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1217041765, now seen corresponding path program 1280 times [2021-05-22 02:08:04,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:04,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711220851] [2021-05-22 02:08:04,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:05,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:05,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:05,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711220851] [2021-05-22 02:08:05,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711220851] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:05,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:05,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:05,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046237872] [2021-05-22 02:08:05,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:05,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:05,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:05,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:05,015 INFO L87 Difference]: Start difference. First operand 5137 states and 24373 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:05,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:05,098 INFO L93 Difference]: Finished difference Result 10088 states and 45070 transitions. [2021-05-22 02:08:05,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:05,098 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:05,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:05,121 INFO L225 Difference]: With dead ends: 10088 [2021-05-22 02:08:05,122 INFO L226 Difference]: Without dead ends: 9641 [2021-05-22 02:08:05,122 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 103.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:05,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9641 states. [2021-05-22 02:08:05,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9641 to 5105. [2021-05-22 02:08:05,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.75019592476489) internal successors, (24245), 5104 states have internal predecessors, (24245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:05,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24245 transitions. [2021-05-22 02:08:05,341 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24245 transitions. Word has length 29 [2021-05-22 02:08:05,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:05,341 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24245 transitions. [2021-05-22 02:08:05,341 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:05,341 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24245 transitions. [2021-05-22 02:08:05,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:05,349 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:05,349 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:05,349 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1284 [2021-05-22 02:08:05,349 INFO L430 AbstractCegarLoop]: === Iteration 1286 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:05,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:05,349 INFO L82 PathProgramCache]: Analyzing trace with hash 9545449, now seen corresponding path program 1281 times [2021-05-22 02:08:05,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:05,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682995498] [2021-05-22 02:08:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:05,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:05,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682995498] [2021-05-22 02:08:05,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682995498] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:05,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:05,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:05,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174014704] [2021-05-22 02:08:05,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:05,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:05,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:05,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:05,447 INFO L87 Difference]: Start difference. First operand 5105 states and 24245 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:05,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:05,549 INFO L93 Difference]: Finished difference Result 10056 states and 44990 transitions. [2021-05-22 02:08:05,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:05,549 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:05,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:05,573 INFO L225 Difference]: With dead ends: 10056 [2021-05-22 02:08:05,574 INFO L226 Difference]: Without dead ends: 9641 [2021-05-22 02:08:05,574 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:05,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9641 states. [2021-05-22 02:08:05,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9641 to 5153. [2021-05-22 02:08:05,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.740100931677019) internal successors, (24421), 5152 states have internal predecessors, (24421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:05,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24421 transitions. [2021-05-22 02:08:05,803 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24421 transitions. Word has length 29 [2021-05-22 02:08:05,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:05,803 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24421 transitions. [2021-05-22 02:08:05,804 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:05,804 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24421 transitions. [2021-05-22 02:08:05,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:05,812 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:05,812 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:05,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1285 [2021-05-22 02:08:05,813 INFO L430 AbstractCegarLoop]: === Iteration 1287 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:05,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:05,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1498106315, now seen corresponding path program 1282 times [2021-05-22 02:08:05,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:05,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333414491] [2021-05-22 02:08:05,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:05,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:05,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:05,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333414491] [2021-05-22 02:08:05,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333414491] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:05,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:05,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:05,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092629764] [2021-05-22 02:08:05,908 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:05,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:05,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:05,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:05,908 INFO L87 Difference]: Start difference. First operand 5153 states and 24421 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:06,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:06,018 INFO L93 Difference]: Finished difference Result 9784 states and 43981 transitions. [2021-05-22 02:08:06,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:06,018 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:06,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:06,042 INFO L225 Difference]: With dead ends: 9784 [2021-05-22 02:08:06,042 INFO L226 Difference]: Without dead ends: 9273 [2021-05-22 02:08:06,042 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:06,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9273 states. [2021-05-22 02:08:06,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9273 to 5105. [2021-05-22 02:08:06,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.747061128526646) internal successors, (24229), 5104 states have internal predecessors, (24229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:06,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24229 transitions. [2021-05-22 02:08:06,268 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24229 transitions. Word has length 29 [2021-05-22 02:08:06,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:06,268 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24229 transitions. [2021-05-22 02:08:06,268 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:06,268 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24229 transitions. [2021-05-22 02:08:06,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:06,276 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:06,277 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:06,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1286 [2021-05-22 02:08:06,277 INFO L430 AbstractCegarLoop]: === Iteration 1288 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:06,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:06,277 INFO L82 PathProgramCache]: Analyzing trace with hash 645617317, now seen corresponding path program 1283 times [2021-05-22 02:08:06,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:06,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991763471] [2021-05-22 02:08:06,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:06,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:06,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991763471] [2021-05-22 02:08:06,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991763471] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:06,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:06,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:06,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241849277] [2021-05-22 02:08:06,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:06,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:06,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:06,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:06,374 INFO L87 Difference]: Start difference. First operand 5105 states and 24229 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:06,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:06,461 INFO L93 Difference]: Finished difference Result 10056 states and 44974 transitions. [2021-05-22 02:08:06,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:06,462 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:06,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:06,486 INFO L225 Difference]: With dead ends: 10056 [2021-05-22 02:08:06,487 INFO L226 Difference]: Without dead ends: 9641 [2021-05-22 02:08:06,487 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 103.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:06,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9641 states. [2021-05-22 02:08:06,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9641 to 5153. [2021-05-22 02:08:06,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.736995341614906) internal successors, (24405), 5152 states have internal predecessors, (24405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:06,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24405 transitions. [2021-05-22 02:08:06,712 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24405 transitions. Word has length 29 [2021-05-22 02:08:06,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:06,712 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24405 transitions. [2021-05-22 02:08:06,712 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:06,712 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24405 transitions. [2021-05-22 02:08:06,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:06,721 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:06,721 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:06,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1287 [2021-05-22 02:08:06,721 INFO L430 AbstractCegarLoop]: === Iteration 1289 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:06,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:06,721 INFO L82 PathProgramCache]: Analyzing trace with hash -849061241, now seen corresponding path program 1284 times [2021-05-22 02:08:06,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:06,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672813329] [2021-05-22 02:08:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:06,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:06,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:06,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672813329] [2021-05-22 02:08:06,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672813329] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:06,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:06,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:06,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346619225] [2021-05-22 02:08:06,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:06,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:06,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:06,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:06,819 INFO L87 Difference]: Start difference. First operand 5153 states and 24405 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:06,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:06,919 INFO L93 Difference]: Finished difference Result 9784 states and 43965 transitions. [2021-05-22 02:08:06,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:06,919 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:06,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:06,943 INFO L225 Difference]: With dead ends: 9784 [2021-05-22 02:08:06,943 INFO L226 Difference]: Without dead ends: 9257 [2021-05-22 02:08:06,943 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:07,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9257 states. [2021-05-22 02:08:07,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9257 to 5089. [2021-05-22 02:08:07,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 4.7509827044025155) internal successors, (24173), 5088 states have internal predecessors, (24173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:07,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 24173 transitions. [2021-05-22 02:08:07,160 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 24173 transitions. Word has length 29 [2021-05-22 02:08:07,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:07,160 INFO L482 AbstractCegarLoop]: Abstraction has 5089 states and 24173 transitions. [2021-05-22 02:08:07,160 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:07,161 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 24173 transitions. [2021-05-22 02:08:07,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:07,168 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:07,169 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:07,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1288 [2021-05-22 02:08:07,169 INFO L430 AbstractCegarLoop]: === Iteration 1290 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:07,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:07,169 INFO L82 PathProgramCache]: Analyzing trace with hash 2104463175, now seen corresponding path program 1285 times [2021-05-22 02:08:07,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:07,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148582893] [2021-05-22 02:08:07,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:07,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:07,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148582893] [2021-05-22 02:08:07,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148582893] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:07,277 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:07,277 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:07,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878584219] [2021-05-22 02:08:07,277 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:07,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:07,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:07,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:07,278 INFO L87 Difference]: Start difference. First operand 5089 states and 24173 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:07,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:07,386 INFO L93 Difference]: Finished difference Result 10256 states and 45870 transitions. [2021-05-22 02:08:07,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:07,386 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:07,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:07,412 INFO L225 Difference]: With dead ends: 10256 [2021-05-22 02:08:07,412 INFO L226 Difference]: Without dead ends: 9841 [2021-05-22 02:08:07,412 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:07,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9841 states. [2021-05-22 02:08:07,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9841 to 5161. [2021-05-22 02:08:07,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.7428294573643415) internal successors, (24473), 5160 states have internal predecessors, (24473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:07,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24473 transitions. [2021-05-22 02:08:07,648 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24473 transitions. Word has length 29 [2021-05-22 02:08:07,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:07,648 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24473 transitions. [2021-05-22 02:08:07,649 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:07,649 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24473 transitions. [2021-05-22 02:08:07,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:07,658 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:07,658 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:07,658 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1289 [2021-05-22 02:08:07,658 INFO L430 AbstractCegarLoop]: === Iteration 1291 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:07,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:07,658 INFO L82 PathProgramCache]: Analyzing trace with hash 159114025, now seen corresponding path program 1286 times [2021-05-22 02:08:07,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:07,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637276706] [2021-05-22 02:08:07,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:07,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:07,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637276706] [2021-05-22 02:08:07,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637276706] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:07,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:07,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:07,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461135194] [2021-05-22 02:08:07,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:07,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:07,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:07,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:07,768 INFO L87 Difference]: Start difference. First operand 5161 states and 24473 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:07,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:07,874 INFO L93 Difference]: Finished difference Result 10316 states and 46086 transitions. [2021-05-22 02:08:07,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:07,874 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:07,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:07,899 INFO L225 Difference]: With dead ends: 10316 [2021-05-22 02:08:07,899 INFO L226 Difference]: Without dead ends: 9793 [2021-05-22 02:08:07,899 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:08,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9793 states. [2021-05-22 02:08:08,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9793 to 5113. [2021-05-22 02:08:08,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.748239436619718) internal successors, (24273), 5112 states have internal predecessors, (24273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:08,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24273 transitions. [2021-05-22 02:08:08,133 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24273 transitions. Word has length 29 [2021-05-22 02:08:08,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:08,133 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24273 transitions. [2021-05-22 02:08:08,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:08,133 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24273 transitions. [2021-05-22 02:08:08,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:08,142 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:08,142 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:08,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1290 [2021-05-22 02:08:08,142 INFO L430 AbstractCegarLoop]: === Iteration 1292 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:08,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:08,142 INFO L82 PathProgramCache]: Analyzing trace with hash -789386583, now seen corresponding path program 1287 times [2021-05-22 02:08:08,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:08,142 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017447815] [2021-05-22 02:08:08,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:08,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:08,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:08,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017447815] [2021-05-22 02:08:08,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017447815] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:08,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:08,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:08,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644011893] [2021-05-22 02:08:08,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:08,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:08,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:08,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:08,240 INFO L87 Difference]: Start difference. First operand 5113 states and 24273 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:08,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:08,341 INFO L93 Difference]: Finished difference Result 10148 states and 45406 transitions. [2021-05-22 02:08:08,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:08,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:08,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:08,367 INFO L225 Difference]: With dead ends: 10148 [2021-05-22 02:08:08,367 INFO L226 Difference]: Without dead ends: 9733 [2021-05-22 02:08:08,367 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:08,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9733 states. [2021-05-22 02:08:08,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9733 to 5161. [2021-05-22 02:08:08,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.738178294573643) internal successors, (24449), 5160 states have internal predecessors, (24449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24449 transitions. [2021-05-22 02:08:08,598 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24449 transitions. Word has length 29 [2021-05-22 02:08:08,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:08,598 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24449 transitions. [2021-05-22 02:08:08,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:08,598 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24449 transitions. [2021-05-22 02:08:08,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:08,606 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:08,606 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:08,606 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1291 [2021-05-22 02:08:08,606 INFO L430 AbstractCegarLoop]: === Iteration 1293 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:08,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:08,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1338813911, now seen corresponding path program 1288 times [2021-05-22 02:08:08,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:08,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539864894] [2021-05-22 02:08:08,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:08,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:08,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:08,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539864894] [2021-05-22 02:08:08,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539864894] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:08,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:08,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:08,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484574162] [2021-05-22 02:08:08,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:08,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:08,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:08,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:08,701 INFO L87 Difference]: Start difference. First operand 5161 states and 24449 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:08,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:08,807 INFO L93 Difference]: Finished difference Result 9876 states and 44397 transitions. [2021-05-22 02:08:08,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:08,808 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:08,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:08,832 INFO L225 Difference]: With dead ends: 9876 [2021-05-22 02:08:08,832 INFO L226 Difference]: Without dead ends: 9365 [2021-05-22 02:08:08,832 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:08,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9365 states. [2021-05-22 02:08:09,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9365 to 5113. [2021-05-22 02:08:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.743544600938967) internal successors, (24249), 5112 states have internal predecessors, (24249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24249 transitions. [2021-05-22 02:08:09,059 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24249 transitions. Word has length 29 [2021-05-22 02:08:09,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:09,059 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24249 transitions. [2021-05-22 02:08:09,059 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:09,059 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24249 transitions. [2021-05-22 02:08:09,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:09,067 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:09,067 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:09,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1292 [2021-05-22 02:08:09,067 INFO L430 AbstractCegarLoop]: === Iteration 1294 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:09,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:09,068 INFO L82 PathProgramCache]: Analyzing trace with hash 441996683, now seen corresponding path program 1289 times [2021-05-22 02:08:09,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:09,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011463655] [2021-05-22 02:08:09,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:09,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:09,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:09,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011463655] [2021-05-22 02:08:09,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011463655] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:09,165 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:09,165 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:09,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346382810] [2021-05-22 02:08:09,165 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:09,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:09,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:09,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:09,165 INFO L87 Difference]: Start difference. First operand 5113 states and 24249 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:09,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:09,275 INFO L93 Difference]: Finished difference Result 10232 states and 45770 transitions. [2021-05-22 02:08:09,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:09,275 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:09,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:09,299 INFO L225 Difference]: With dead ends: 10232 [2021-05-22 02:08:09,300 INFO L226 Difference]: Without dead ends: 9757 [2021-05-22 02:08:09,300 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:09,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9757 states. [2021-05-22 02:08:09,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9757 to 5185. [2021-05-22 02:08:09,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.730902777777778) internal successors, (24525), 5184 states have internal predecessors, (24525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24525 transitions. [2021-05-22 02:08:09,523 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24525 transitions. Word has length 29 [2021-05-22 02:08:09,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:09,524 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24525 transitions. [2021-05-22 02:08:09,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24525 transitions. [2021-05-22 02:08:09,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:09,532 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:09,532 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:09,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1293 [2021-05-22 02:08:09,532 INFO L430 AbstractCegarLoop]: === Iteration 1295 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:09,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:09,532 INFO L82 PathProgramCache]: Analyzing trace with hash -950147863, now seen corresponding path program 1290 times [2021-05-22 02:08:09,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:09,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925816861] [2021-05-22 02:08:09,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:09,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:09,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925816861] [2021-05-22 02:08:09,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925816861] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:09,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:09,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:09,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176924436] [2021-05-22 02:08:09,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:09,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:09,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:09,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:09,626 INFO L87 Difference]: Start difference. First operand 5185 states and 24525 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:09,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:09,734 INFO L93 Difference]: Finished difference Result 9900 states and 44473 transitions. [2021-05-22 02:08:09,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:09,734 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:09,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:09,759 INFO L225 Difference]: With dead ends: 9900 [2021-05-22 02:08:09,759 INFO L226 Difference]: Without dead ends: 9341 [2021-05-22 02:08:09,759 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:09,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9341 states. [2021-05-22 02:08:09,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9341 to 5089. [2021-05-22 02:08:09,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 4.74941037735849) internal successors, (24165), 5088 states have internal predecessors, (24165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:09,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 24165 transitions. [2021-05-22 02:08:09,975 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 24165 transitions. Word has length 29 [2021-05-22 02:08:09,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:09,975 INFO L482 AbstractCegarLoop]: Abstraction has 5089 states and 24165 transitions. [2021-05-22 02:08:09,975 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:09,975 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 24165 transitions. [2021-05-22 02:08:09,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:09,983 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:09,983 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:09,983 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1294 [2021-05-22 02:08:09,984 INFO L430 AbstractCegarLoop]: === Iteration 1296 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:09,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:09,984 INFO L82 PathProgramCache]: Analyzing trace with hash -771102653, now seen corresponding path program 1291 times [2021-05-22 02:08:09,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:09,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979097699] [2021-05-22 02:08:09,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:10,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:10,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979097699] [2021-05-22 02:08:10,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979097699] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:10,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:10,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:10,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609559341] [2021-05-22 02:08:10,091 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:10,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:10,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:10,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:10,091 INFO L87 Difference]: Start difference. First operand 5089 states and 24165 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:10,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:10,185 INFO L93 Difference]: Finished difference Result 10256 states and 45862 transitions. [2021-05-22 02:08:10,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:10,191 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:10,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:10,218 INFO L225 Difference]: With dead ends: 10256 [2021-05-22 02:08:10,218 INFO L226 Difference]: Without dead ends: 9841 [2021-05-22 02:08:10,218 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:10,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9841 states. [2021-05-22 02:08:10,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9841 to 5161. [2021-05-22 02:08:10,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.741279069767442) internal successors, (24465), 5160 states have internal predecessors, (24465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:10,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24465 transitions. [2021-05-22 02:08:10,437 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24465 transitions. Word has length 29 [2021-05-22 02:08:10,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:10,437 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24465 transitions. [2021-05-22 02:08:10,437 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:10,437 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24465 transitions. [2021-05-22 02:08:10,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:10,446 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:10,446 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:10,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1295 [2021-05-22 02:08:10,446 INFO L430 AbstractCegarLoop]: === Iteration 1297 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:10,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:10,446 INFO L82 PathProgramCache]: Analyzing trace with hash 309959973, now seen corresponding path program 1292 times [2021-05-22 02:08:10,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:10,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014542641] [2021-05-22 02:08:10,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:10,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:10,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:10,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014542641] [2021-05-22 02:08:10,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014542641] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:10,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:10,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:10,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137536587] [2021-05-22 02:08:10,552 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:10,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:10,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:10,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:10,552 INFO L87 Difference]: Start difference. First operand 5161 states and 24465 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:10,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:10,661 INFO L93 Difference]: Finished difference Result 10316 states and 46078 transitions. [2021-05-22 02:08:10,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:10,662 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:10,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:10,687 INFO L225 Difference]: With dead ends: 10316 [2021-05-22 02:08:10,687 INFO L226 Difference]: Without dead ends: 9793 [2021-05-22 02:08:10,687 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:10,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9793 states. [2021-05-22 02:08:10,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9793 to 5113. [2021-05-22 02:08:10,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.746674491392802) internal successors, (24265), 5112 states have internal predecessors, (24265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:10,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24265 transitions. [2021-05-22 02:08:10,917 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24265 transitions. Word has length 29 [2021-05-22 02:08:10,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:10,917 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24265 transitions. [2021-05-22 02:08:10,917 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:10,917 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24265 transitions. [2021-05-22 02:08:10,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:10,926 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:10,926 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:10,926 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1296 [2021-05-22 02:08:10,926 INFO L430 AbstractCegarLoop]: === Iteration 1298 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:10,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:10,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1945062363, now seen corresponding path program 1293 times [2021-05-22 02:08:10,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:10,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038697818] [2021-05-22 02:08:10,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:11,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:11,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038697818] [2021-05-22 02:08:11,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038697818] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:11,021 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:11,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:11,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186661951] [2021-05-22 02:08:11,021 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:11,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:11,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:11,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:11,022 INFO L87 Difference]: Start difference. First operand 5113 states and 24265 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:11,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:11,112 INFO L93 Difference]: Finished difference Result 10148 states and 45398 transitions. [2021-05-22 02:08:11,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:11,113 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:11,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:11,138 INFO L225 Difference]: With dead ends: 10148 [2021-05-22 02:08:11,138 INFO L226 Difference]: Without dead ends: 9733 [2021-05-22 02:08:11,138 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 102.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:11,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9733 states. [2021-05-22 02:08:11,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9733 to 5161. [2021-05-22 02:08:11,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.736627906976744) internal successors, (24441), 5160 states have internal predecessors, (24441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:11,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24441 transitions. [2021-05-22 02:08:11,362 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24441 transitions. Word has length 29 [2021-05-22 02:08:11,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:11,362 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24441 transitions. [2021-05-22 02:08:11,362 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:11,362 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24441 transitions. [2021-05-22 02:08:11,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:11,370 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:11,370 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:11,371 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1297 [2021-05-22 02:08:11,371 INFO L430 AbstractCegarLoop]: === Iteration 1299 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:11,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:11,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1895494619, now seen corresponding path program 1294 times [2021-05-22 02:08:11,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:11,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599617014] [2021-05-22 02:08:11,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:11,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:11,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:11,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599617014] [2021-05-22 02:08:11,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599617014] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:11,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:11,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:11,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677699113] [2021-05-22 02:08:11,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:11,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:11,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:11,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:11,469 INFO L87 Difference]: Start difference. First operand 5161 states and 24441 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:11,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:11,570 INFO L93 Difference]: Finished difference Result 9876 states and 44389 transitions. [2021-05-22 02:08:11,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:11,571 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:11,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:11,593 INFO L225 Difference]: With dead ends: 9876 [2021-05-22 02:08:11,593 INFO L226 Difference]: Without dead ends: 9365 [2021-05-22 02:08:11,593 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:11,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9365 states. [2021-05-22 02:08:11,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9365 to 5113. [2021-05-22 02:08:11,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.74197965571205) internal successors, (24241), 5112 states have internal predecessors, (24241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:11,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24241 transitions. [2021-05-22 02:08:11,816 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24241 transitions. Word has length 29 [2021-05-22 02:08:11,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:11,816 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24241 transitions. [2021-05-22 02:08:11,816 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:11,816 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24241 transitions. [2021-05-22 02:08:11,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:11,824 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:11,824 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:11,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1298 [2021-05-22 02:08:11,824 INFO L430 AbstractCegarLoop]: === Iteration 1300 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:11,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:11,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1557057401, now seen corresponding path program 1295 times [2021-05-22 02:08:11,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:11,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312537340] [2021-05-22 02:08:11,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:11,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:11,920 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:11,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312537340] [2021-05-22 02:08:11,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312537340] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:11,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:11,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:11,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804821053] [2021-05-22 02:08:11,920 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:11,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:11,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:11,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:11,920 INFO L87 Difference]: Start difference. First operand 5113 states and 24241 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:12,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:12,028 INFO L93 Difference]: Finished difference Result 10232 states and 45762 transitions. [2021-05-22 02:08:12,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:12,028 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:12,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:12,052 INFO L225 Difference]: With dead ends: 10232 [2021-05-22 02:08:12,053 INFO L226 Difference]: Without dead ends: 9757 [2021-05-22 02:08:12,053 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:12,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9757 states. [2021-05-22 02:08:12,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9757 to 5185. [2021-05-22 02:08:12,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.729359567901234) internal successors, (24517), 5184 states have internal predecessors, (24517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24517 transitions. [2021-05-22 02:08:12,286 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24517 transitions. Word has length 29 [2021-05-22 02:08:12,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:12,286 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24517 transitions. [2021-05-22 02:08:12,286 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:12,286 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24517 transitions. [2021-05-22 02:08:12,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:12,295 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:12,295 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:12,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1299 [2021-05-22 02:08:12,295 INFO L430 AbstractCegarLoop]: === Iteration 1301 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:12,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:12,296 INFO L82 PathProgramCache]: Analyzing trace with hash 621830245, now seen corresponding path program 1296 times [2021-05-22 02:08:12,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:12,296 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190851939] [2021-05-22 02:08:12,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:12,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:12,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:12,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190851939] [2021-05-22 02:08:12,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190851939] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:12,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:12,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:12,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561159102] [2021-05-22 02:08:12,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:12,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:12,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:12,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:12,394 INFO L87 Difference]: Start difference. First operand 5185 states and 24517 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:12,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:12,513 INFO L93 Difference]: Finished difference Result 9900 states and 44465 transitions. [2021-05-22 02:08:12,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:12,514 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:12,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:12,539 INFO L225 Difference]: With dead ends: 9900 [2021-05-22 02:08:12,539 INFO L226 Difference]: Without dead ends: 9333 [2021-05-22 02:08:12,539 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:12,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9333 states. [2021-05-22 02:08:12,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9333 to 5081. [2021-05-22 02:08:12,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5081 states, 5080 states have (on average 4.7521653543307085) internal successors, (24141), 5080 states have internal predecessors, (24141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:12,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5081 states to 5081 states and 24141 transitions. [2021-05-22 02:08:12,763 INFO L78 Accepts]: Start accepts. Automaton has 5081 states and 24141 transitions. Word has length 29 [2021-05-22 02:08:12,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:12,764 INFO L482 AbstractCegarLoop]: Abstraction has 5081 states and 24141 transitions. [2021-05-22 02:08:12,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:12,764 INFO L276 IsEmpty]: Start isEmpty. Operand 5081 states and 24141 transitions. [2021-05-22 02:08:12,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:12,825 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:12,825 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:12,825 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1300 [2021-05-22 02:08:12,825 INFO L430 AbstractCegarLoop]: === Iteration 1302 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:12,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:12,826 INFO L82 PathProgramCache]: Analyzing trace with hash -472394557, now seen corresponding path program 1297 times [2021-05-22 02:08:12,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:12,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031614171] [2021-05-22 02:08:12,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:12,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:12,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031614171] [2021-05-22 02:08:12,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031614171] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:12,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:12,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:12,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787351522] [2021-05-22 02:08:12,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:12,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:12,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:12,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:12,936 INFO L87 Difference]: Start difference. First operand 5081 states and 24141 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:13,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:13,056 INFO L93 Difference]: Finished difference Result 10544 states and 47204 transitions. [2021-05-22 02:08:13,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:13,056 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:13,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:13,084 INFO L225 Difference]: With dead ends: 10544 [2021-05-22 02:08:13,084 INFO L226 Difference]: Without dead ends: 10067 [2021-05-22 02:08:13,084 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:13,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10067 states. [2021-05-22 02:08:13,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10067 to 5165. [2021-05-22 02:08:13,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.746127033307514) internal successors, (24509), 5164 states have internal predecessors, (24509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:13,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24509 transitions. [2021-05-22 02:08:13,320 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24509 transitions. Word has length 29 [2021-05-22 02:08:13,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:13,320 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24509 transitions. [2021-05-22 02:08:13,320 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:13,320 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24509 transitions. [2021-05-22 02:08:13,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:13,329 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:13,329 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:13,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1301 [2021-05-22 02:08:13,329 INFO L430 AbstractCegarLoop]: === Iteration 1303 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:13,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:13,329 INFO L82 PathProgramCache]: Analyzing trace with hash 608668069, now seen corresponding path program 1298 times [2021-05-22 02:08:13,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:13,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708545078] [2021-05-22 02:08:13,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:13,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:13,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:13,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708545078] [2021-05-22 02:08:13,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708545078] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:13,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:13,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:13,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198878722] [2021-05-22 02:08:13,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:13,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:13,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:13,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:13,439 INFO L87 Difference]: Start difference. First operand 5165 states and 24509 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:13,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:13,538 INFO L93 Difference]: Finished difference Result 10482 states and 46887 transitions. [2021-05-22 02:08:13,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:13,538 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:13,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:13,566 INFO L225 Difference]: With dead ends: 10482 [2021-05-22 02:08:13,566 INFO L226 Difference]: Without dead ends: 10019 [2021-05-22 02:08:13,566 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:13,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10019 states. [2021-05-22 02:08:13,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10019 to 5117. [2021-05-22 02:08:13,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.751563721657545) internal successors, (24309), 5116 states have internal predecessors, (24309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:13,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24309 transitions. [2021-05-22 02:08:13,806 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24309 transitions. Word has length 29 [2021-05-22 02:08:13,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:13,806 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24309 transitions. [2021-05-22 02:08:13,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:13,807 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24309 transitions. [2021-05-22 02:08:13,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:13,815 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:13,815 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:13,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1302 [2021-05-22 02:08:13,816 INFO L430 AbstractCegarLoop]: === Iteration 1304 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:13,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:13,816 INFO L82 PathProgramCache]: Analyzing trace with hash -953296603, now seen corresponding path program 1299 times [2021-05-22 02:08:13,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:13,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686543870] [2021-05-22 02:08:13,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:13,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:13,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686543870] [2021-05-22 02:08:13,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686543870] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:13,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:13,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:13,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918737557] [2021-05-22 02:08:13,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:13,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:13,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:13,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:13,918 INFO L87 Difference]: Start difference. First operand 5117 states and 24309 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:14,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:14,021 INFO L93 Difference]: Finished difference Result 10634 states and 47591 transitions. [2021-05-22 02:08:14,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:14,021 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:14,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:14,048 INFO L225 Difference]: With dead ends: 10634 [2021-05-22 02:08:14,049 INFO L226 Difference]: Without dead ends: 10157 [2021-05-22 02:08:14,049 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:14,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10157 states. [2021-05-22 02:08:14,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10157 to 5195. [2021-05-22 02:08:14,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.736619175972276) internal successors, (24602), 5194 states have internal predecessors, (24602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:14,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24602 transitions. [2021-05-22 02:08:14,286 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24602 transitions. Word has length 29 [2021-05-22 02:08:14,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:14,286 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24602 transitions. [2021-05-22 02:08:14,286 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:14,287 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24602 transitions. [2021-05-22 02:08:14,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:14,295 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:14,295 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:14,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1303 [2021-05-22 02:08:14,295 INFO L430 AbstractCegarLoop]: === Iteration 1305 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:14,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:14,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1653424421, now seen corresponding path program 1300 times [2021-05-22 02:08:14,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:14,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974024248] [2021-05-22 02:08:14,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:14,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:14,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974024248] [2021-05-22 02:08:14,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974024248] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:14,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:14,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:14,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656122876] [2021-05-22 02:08:14,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:14,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:14,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:14,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:14,398 INFO L87 Difference]: Start difference. First operand 5195 states and 24602 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:14,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:14,512 INFO L93 Difference]: Finished difference Result 10632 states and 47508 transitions. [2021-05-22 02:08:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:14,513 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:14,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:14,539 INFO L225 Difference]: With dead ends: 10632 [2021-05-22 02:08:14,539 INFO L226 Difference]: Without dead ends: 10079 [2021-05-22 02:08:14,540 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:14,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10079 states. [2021-05-22 02:08:14,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10079 to 5117. [2021-05-22 02:08:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.74687255668491) internal successors, (24285), 5116 states have internal predecessors, (24285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:14,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24285 transitions. [2021-05-22 02:08:14,775 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24285 transitions. Word has length 29 [2021-05-22 02:08:14,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:14,775 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24285 transitions. [2021-05-22 02:08:14,775 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:14,775 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24285 transitions. [2021-05-22 02:08:14,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:14,783 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:14,783 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:14,783 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1304 [2021-05-22 02:08:14,784 INFO L430 AbstractCegarLoop]: === Iteration 1306 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:14,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:14,784 INFO L82 PathProgramCache]: Analyzing trace with hash -565291641, now seen corresponding path program 1301 times [2021-05-22 02:08:14,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:14,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518518761] [2021-05-22 02:08:14,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:14,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:14,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:14,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518518761] [2021-05-22 02:08:14,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518518761] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:14,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:14,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:14,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586970465] [2021-05-22 02:08:14,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:14,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:14,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:14,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:14,898 INFO L87 Difference]: Start difference. First operand 5117 states and 24285 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:15,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:15,003 INFO L93 Difference]: Finished difference Result 10480 states and 46882 transitions. [2021-05-22 02:08:15,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:15,003 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:15,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:15,030 INFO L225 Difference]: With dead ends: 10480 [2021-05-22 02:08:15,030 INFO L226 Difference]: Without dead ends: 10065 [2021-05-22 02:08:15,030 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:15,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10065 states. [2021-05-22 02:08:15,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10065 to 5165. [2021-05-22 02:08:15,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.736831913245546) internal successors, (24461), 5164 states have internal predecessors, (24461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:15,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24461 transitions. [2021-05-22 02:08:15,257 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24461 transitions. Word has length 29 [2021-05-22 02:08:15,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:15,258 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24461 transitions. [2021-05-22 02:08:15,258 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:15,258 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24461 transitions. [2021-05-22 02:08:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:15,266 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:15,266 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:15,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1305 [2021-05-22 02:08:15,266 INFO L430 AbstractCegarLoop]: === Iteration 1307 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:15,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:15,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1412088603, now seen corresponding path program 1302 times [2021-05-22 02:08:15,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:15,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816630338] [2021-05-22 02:08:15,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:15,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:15,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:15,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816630338] [2021-05-22 02:08:15,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816630338] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:15,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:15,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:15,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891390684] [2021-05-22 02:08:15,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:15,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:15,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:15,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:15,379 INFO L87 Difference]: Start difference. First operand 5165 states and 24461 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:15,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:15,499 INFO L93 Difference]: Finished difference Result 10540 states and 47098 transitions. [2021-05-22 02:08:15,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:15,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:15,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:15,526 INFO L225 Difference]: With dead ends: 10540 [2021-05-22 02:08:15,526 INFO L226 Difference]: Without dead ends: 9993 [2021-05-22 02:08:15,526 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:15,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9993 states. [2021-05-22 02:08:15,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9993 to 5093. [2021-05-22 02:08:15,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 5092 states have (on average 4.751963864886096) internal successors, (24197), 5092 states have internal predecessors, (24197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:15,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 24197 transitions. [2021-05-22 02:08:15,760 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 24197 transitions. Word has length 29 [2021-05-22 02:08:15,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:15,760 INFO L482 AbstractCegarLoop]: Abstraction has 5093 states and 24197 transitions. [2021-05-22 02:08:15,760 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:15,760 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 24197 transitions. [2021-05-22 02:08:15,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:15,768 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:15,768 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:15,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1306 [2021-05-22 02:08:15,769 INFO L430 AbstractCegarLoop]: === Iteration 1308 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:15,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:15,769 INFO L82 PathProgramCache]: Analyzing trace with hash 928722981, now seen corresponding path program 1303 times [2021-05-22 02:08:15,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:15,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203768618] [2021-05-22 02:08:15,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:15,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:15,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203768618] [2021-05-22 02:08:15,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203768618] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:15,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:15,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:15,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272901399] [2021-05-22 02:08:15,878 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:15,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:15,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:15,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:15,879 INFO L87 Difference]: Start difference. First operand 5093 states and 24197 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:15,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:15,995 INFO L93 Difference]: Finished difference Result 10478 states and 46905 transitions. [2021-05-22 02:08:15,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:15,995 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:15,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:16,020 INFO L225 Difference]: With dead ends: 10478 [2021-05-22 02:08:16,020 INFO L226 Difference]: Without dead ends: 10001 [2021-05-22 02:08:16,020 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:16,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10001 states. [2021-05-22 02:08:16,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10001 to 5165. [2021-05-22 02:08:16,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.743803253292022) internal successors, (24497), 5164 states have internal predecessors, (24497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:16,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24497 transitions. [2021-05-22 02:08:16,253 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24497 transitions. Word has length 29 [2021-05-22 02:08:16,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:16,254 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24497 transitions. [2021-05-22 02:08:16,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:16,254 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24497 transitions. [2021-05-22 02:08:16,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:16,262 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:16,262 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:16,262 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1307 [2021-05-22 02:08:16,262 INFO L430 AbstractCegarLoop]: === Iteration 1309 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:16,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:16,262 INFO L82 PathProgramCache]: Analyzing trace with hash 2009785607, now seen corresponding path program 1304 times [2021-05-22 02:08:16,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:16,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50814519] [2021-05-22 02:08:16,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:16,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:16,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:16,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50814519] [2021-05-22 02:08:16,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50814519] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:16,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:16,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:16,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093112895] [2021-05-22 02:08:16,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:16,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:16,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:16,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:16,375 INFO L87 Difference]: Start difference. First operand 5165 states and 24497 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:16,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:16,466 INFO L93 Difference]: Finished difference Result 10416 states and 46588 transitions. [2021-05-22 02:08:16,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:16,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:16,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:16,493 INFO L225 Difference]: With dead ends: 10416 [2021-05-22 02:08:16,493 INFO L226 Difference]: Without dead ends: 9953 [2021-05-22 02:08:16,493 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:16,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9953 states. [2021-05-22 02:08:16,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9953 to 5117. [2021-05-22 02:08:16,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.749218139171227) internal successors, (24297), 5116 states have internal predecessors, (24297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:16,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24297 transitions. [2021-05-22 02:08:16,718 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24297 transitions. Word has length 29 [2021-05-22 02:08:16,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:16,719 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24297 transitions. [2021-05-22 02:08:16,719 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:16,719 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24297 transitions. [2021-05-22 02:08:16,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:16,727 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:16,727 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:16,727 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1308 [2021-05-22 02:08:16,727 INFO L430 AbstractCegarLoop]: === Iteration 1310 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:16,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:16,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1318684709, now seen corresponding path program 1305 times [2021-05-22 02:08:16,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:16,727 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67969181] [2021-05-22 02:08:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:16,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:16,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67969181] [2021-05-22 02:08:16,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67969181] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:16,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:16,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:16,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680211912] [2021-05-22 02:08:16,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:16,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:16,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:16,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:16,841 INFO L87 Difference]: Start difference. First operand 5117 states and 24297 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:16,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:16,944 INFO L93 Difference]: Finished difference Result 10392 states and 46560 transitions. [2021-05-22 02:08:16,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:16,944 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:16,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:16,970 INFO L225 Difference]: With dead ends: 10392 [2021-05-22 02:08:16,970 INFO L226 Difference]: Without dead ends: 9915 [2021-05-22 02:08:16,970 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:17,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9915 states. [2021-05-22 02:08:17,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9915 to 5189. [2021-05-22 02:08:17,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 4.73650732459522) internal successors, (24573), 5188 states have internal predecessors, (24573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:17,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 24573 transitions. [2021-05-22 02:08:17,199 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 24573 transitions. Word has length 29 [2021-05-22 02:08:17,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:17,199 INFO L482 AbstractCegarLoop]: Abstraction has 5189 states and 24573 transitions. [2021-05-22 02:08:17,199 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:17,199 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 24573 transitions. [2021-05-22 02:08:17,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:17,208 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:17,208 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:17,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1309 [2021-05-22 02:08:17,208 INFO L430 AbstractCegarLoop]: === Iteration 1311 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:17,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:17,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1188900827, now seen corresponding path program 1306 times [2021-05-22 02:08:17,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:17,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322526515] [2021-05-22 02:08:17,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:17,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:17,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322526515] [2021-05-22 02:08:17,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322526515] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:17,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:17,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:17,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979846825] [2021-05-22 02:08:17,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:17,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:17,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:17,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:17,323 INFO L87 Difference]: Start difference. First operand 5189 states and 24573 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:17,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:17,423 INFO L93 Difference]: Finished difference Result 10058 states and 45258 transitions. [2021-05-22 02:08:17,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:17,423 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:17,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:17,446 INFO L225 Difference]: With dead ends: 10058 [2021-05-22 02:08:17,446 INFO L226 Difference]: Without dead ends: 9523 [2021-05-22 02:08:17,446 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:17,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9523 states. [2021-05-22 02:08:17,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9523 to 5117. [2021-05-22 02:08:17,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.7445269741985925) internal successors, (24273), 5116 states have internal predecessors, (24273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:17,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24273 transitions. [2021-05-22 02:08:17,674 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24273 transitions. Word has length 29 [2021-05-22 02:08:17,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:17,674 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24273 transitions. [2021-05-22 02:08:17,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:17,674 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24273 transitions. [2021-05-22 02:08:17,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:17,682 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:17,682 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:17,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1310 [2021-05-22 02:08:17,682 INFO L430 AbstractCegarLoop]: === Iteration 1312 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:17,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:17,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1706689671, now seen corresponding path program 1307 times [2021-05-22 02:08:17,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:17,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756527118] [2021-05-22 02:08:17,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:17,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:17,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756527118] [2021-05-22 02:08:17,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756527118] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:17,784 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:17,784 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:17,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899171024] [2021-05-22 02:08:17,784 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:17,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:17,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:17,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:17,785 INFO L87 Difference]: Start difference. First operand 5117 states and 24273 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:17,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:17,872 INFO L93 Difference]: Finished difference Result 10306 states and 46143 transitions. [2021-05-22 02:08:17,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:17,872 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:17,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:17,898 INFO L225 Difference]: With dead ends: 10306 [2021-05-22 02:08:17,899 INFO L226 Difference]: Without dead ends: 9891 [2021-05-22 02:08:17,899 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:18,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9891 states. [2021-05-22 02:08:18,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9891 to 5165. [2021-05-22 02:08:18,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.7345081332300545) internal successors, (24449), 5164 states have internal predecessors, (24449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:18,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24449 transitions. [2021-05-22 02:08:18,123 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24449 transitions. Word has length 29 [2021-05-22 02:08:18,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:18,124 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24449 transitions. [2021-05-22 02:08:18,124 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:18,124 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24449 transitions. [2021-05-22 02:08:18,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:18,132 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:18,132 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:18,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1311 [2021-05-22 02:08:18,132 INFO L430 AbstractCegarLoop]: === Iteration 1313 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:18,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:18,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1678672667, now seen corresponding path program 1308 times [2021-05-22 02:08:18,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:18,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326261868] [2021-05-22 02:08:18,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:18,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:18,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326261868] [2021-05-22 02:08:18,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326261868] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:18,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:18,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:18,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778582583] [2021-05-22 02:08:18,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:18,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:18,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:18,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:18,235 INFO L87 Difference]: Start difference. First operand 5165 states and 24449 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:18,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:18,336 INFO L93 Difference]: Finished difference Result 10034 states and 45134 transitions. [2021-05-22 02:08:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:18,336 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:18,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:18,361 INFO L225 Difference]: With dead ends: 10034 [2021-05-22 02:08:18,361 INFO L226 Difference]: Without dead ends: 9499 [2021-05-22 02:08:18,361 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:18,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9499 states. [2021-05-22 02:08:18,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9499 to 5093. [2021-05-22 02:08:18,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 5092 states have (on average 4.749607227022781) internal successors, (24185), 5092 states have internal predecessors, (24185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:18,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 24185 transitions. [2021-05-22 02:08:18,583 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 24185 transitions. Word has length 29 [2021-05-22 02:08:18,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:18,584 INFO L482 AbstractCegarLoop]: Abstraction has 5093 states and 24185 transitions. [2021-05-22 02:08:18,584 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:18,584 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 24185 transitions. [2021-05-22 02:08:18,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:18,592 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:18,592 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:18,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1312 [2021-05-22 02:08:18,592 INFO L430 AbstractCegarLoop]: === Iteration 1314 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:18,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:18,593 INFO L82 PathProgramCache]: Analyzing trace with hash 139336711, now seen corresponding path program 1309 times [2021-05-22 02:08:18,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:18,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440809701] [2021-05-22 02:08:18,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:18,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:18,688 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:18,688 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440809701] [2021-05-22 02:08:18,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440809701] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:18,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:18,689 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:18,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591669479] [2021-05-22 02:08:18,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:18,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:18,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:18,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:18,689 INFO L87 Difference]: Start difference. First operand 5093 states and 24185 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:18,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:18,807 INFO L93 Difference]: Finished difference Result 10664 states and 47760 transitions. [2021-05-22 02:08:18,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:18,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:18,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:18,833 INFO L225 Difference]: With dead ends: 10664 [2021-05-22 02:08:18,833 INFO L226 Difference]: Without dead ends: 10187 [2021-05-22 02:08:18,833 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:18,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10187 states. [2021-05-22 02:08:19,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10187 to 5207. [2021-05-22 02:08:19,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5207 states, 5206 states have (on average 4.738762965808682) internal successors, (24670), 5206 states have internal predecessors, (24670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:19,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5207 states to 5207 states and 24670 transitions. [2021-05-22 02:08:19,064 INFO L78 Accepts]: Start accepts. Automaton has 5207 states and 24670 transitions. Word has length 29 [2021-05-22 02:08:19,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:19,065 INFO L482 AbstractCegarLoop]: Abstraction has 5207 states and 24670 transitions. [2021-05-22 02:08:19,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:19,065 INFO L276 IsEmpty]: Start isEmpty. Operand 5207 states and 24670 transitions. [2021-05-22 02:08:19,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:19,073 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:19,073 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:19,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1313 [2021-05-22 02:08:19,074 INFO L430 AbstractCegarLoop]: === Iteration 1315 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:19,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:19,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1548909561, now seen corresponding path program 1310 times [2021-05-22 02:08:19,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:19,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182675805] [2021-05-22 02:08:19,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:19,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:19,168 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:19,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182675805] [2021-05-22 02:08:19,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182675805] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:19,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:19,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:19,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804804288] [2021-05-22 02:08:19,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:19,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:19,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:19,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:19,169 INFO L87 Difference]: Start difference. First operand 5207 states and 24670 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:19,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:19,281 INFO L93 Difference]: Finished difference Result 10662 states and 47677 transitions. [2021-05-22 02:08:19,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:19,281 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:19,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:19,306 INFO L225 Difference]: With dead ends: 10662 [2021-05-22 02:08:19,307 INFO L226 Difference]: Without dead ends: 10109 [2021-05-22 02:08:19,307 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:19,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10109 states. [2021-05-22 02:08:19,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10109 to 5129. [2021-05-22 02:08:19,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.746684867394696) internal successors, (24341), 5128 states have internal predecessors, (24341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:19,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24341 transitions. [2021-05-22 02:08:19,531 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24341 transitions. Word has length 29 [2021-05-22 02:08:19,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:19,531 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24341 transitions. [2021-05-22 02:08:19,531 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:19,531 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24341 transitions. [2021-05-22 02:08:19,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:19,539 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:19,539 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:19,539 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1314 [2021-05-22 02:08:19,540 INFO L430 AbstractCegarLoop]: === Iteration 1316 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:19,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:19,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1893675931, now seen corresponding path program 1311 times [2021-05-22 02:08:19,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:19,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860375956] [2021-05-22 02:08:19,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:19,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:19,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:19,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860375956] [2021-05-22 02:08:19,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860375956] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:19,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:19,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:19,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032984810] [2021-05-22 02:08:19,647 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:19,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:19,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:19,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:19,648 INFO L87 Difference]: Start difference. First operand 5129 states and 24341 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:19,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:19,748 INFO L93 Difference]: Finished difference Result 10488 states and 46992 transitions. [2021-05-22 02:08:19,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:19,748 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:19,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:19,772 INFO L225 Difference]: With dead ends: 10488 [2021-05-22 02:08:19,772 INFO L226 Difference]: Without dead ends: 10011 [2021-05-22 02:08:19,772 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:19,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10011 states. [2021-05-22 02:08:19,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10011 to 5201. [2021-05-22 02:08:19,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 4.734038461538462) internal successors, (24617), 5200 states have internal predecessors, (24617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:19,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 24617 transitions. [2021-05-22 02:08:19,996 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 24617 transitions. Word has length 29 [2021-05-22 02:08:19,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:19,997 INFO L482 AbstractCegarLoop]: Abstraction has 5201 states and 24617 transitions. [2021-05-22 02:08:19,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:19,997 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 24617 transitions. [2021-05-22 02:08:20,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:20,005 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:20,005 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:20,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1315 [2021-05-22 02:08:20,005 INFO L430 AbstractCegarLoop]: === Iteration 1317 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:20,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:20,005 INFO L82 PathProgramCache]: Analyzing trace with hash 520700935, now seen corresponding path program 1312 times [2021-05-22 02:08:20,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:20,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533260450] [2021-05-22 02:08:20,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:20,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:20,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:20,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533260450] [2021-05-22 02:08:20,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533260450] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:20,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:20,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:20,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994288010] [2021-05-22 02:08:20,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:20,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:20,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:20,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:20,109 INFO L87 Difference]: Start difference. First operand 5201 states and 24617 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:20,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:20,213 INFO L93 Difference]: Finished difference Result 10154 states and 45690 transitions. [2021-05-22 02:08:20,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:20,213 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:20,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:20,238 INFO L225 Difference]: With dead ends: 10154 [2021-05-22 02:08:20,239 INFO L226 Difference]: Without dead ends: 9619 [2021-05-22 02:08:20,239 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:20,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9619 states. [2021-05-22 02:08:20,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9619 to 5129. [2021-05-22 02:08:20,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.739664586583463) internal successors, (24305), 5128 states have internal predecessors, (24305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:20,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24305 transitions. [2021-05-22 02:08:20,461 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24305 transitions. Word has length 29 [2021-05-22 02:08:20,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:20,461 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24305 transitions. [2021-05-22 02:08:20,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:20,461 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24305 transitions. [2021-05-22 02:08:20,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:20,470 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:20,470 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:20,470 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1316 [2021-05-22 02:08:20,470 INFO L430 AbstractCegarLoop]: === Iteration 1318 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:20,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:20,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1861956601, now seen corresponding path program 1313 times [2021-05-22 02:08:20,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:20,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533448511] [2021-05-22 02:08:20,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:20,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:20,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:20,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533448511] [2021-05-22 02:08:20,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533448511] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:20,567 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:20,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:20,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920999366] [2021-05-22 02:08:20,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:20,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:20,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:20,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:20,568 INFO L87 Difference]: Start difference. First operand 5129 states and 24305 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:20,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:20,677 INFO L93 Difference]: Finished difference Result 10486 states and 46951 transitions. [2021-05-22 02:08:20,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:20,677 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:20,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:20,702 INFO L225 Difference]: With dead ends: 10486 [2021-05-22 02:08:20,702 INFO L226 Difference]: Without dead ends: 10011 [2021-05-22 02:08:20,702 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:20,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10011 states. [2021-05-22 02:08:20,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10011 to 5201. [2021-05-22 02:08:20,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 4.727115384615384) internal successors, (24581), 5200 states have internal predecessors, (24581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:20,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 24581 transitions. [2021-05-22 02:08:20,926 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 24581 transitions. Word has length 29 [2021-05-22 02:08:20,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:20,926 INFO L482 AbstractCegarLoop]: Abstraction has 5201 states and 24581 transitions. [2021-05-22 02:08:20,926 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:20,926 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 24581 transitions. [2021-05-22 02:08:20,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:20,934 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:20,934 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:20,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1317 [2021-05-22 02:08:20,935 INFO L430 AbstractCegarLoop]: === Iteration 1319 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:20,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:20,935 INFO L82 PathProgramCache]: Analyzing trace with hash 316931045, now seen corresponding path program 1314 times [2021-05-22 02:08:20,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:20,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079285827] [2021-05-22 02:08:20,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:21,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:21,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079285827] [2021-05-22 02:08:21,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079285827] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:21,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:21,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:21,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057182523] [2021-05-22 02:08:21,029 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:21,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:21,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:21,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:21,029 INFO L87 Difference]: Start difference. First operand 5201 states and 24581 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:21,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:21,140 INFO L93 Difference]: Finished difference Result 10154 states and 45654 transitions. [2021-05-22 02:08:21,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:21,140 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:21,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:21,165 INFO L225 Difference]: With dead ends: 10154 [2021-05-22 02:08:21,166 INFO L226 Difference]: Without dead ends: 9583 [2021-05-22 02:08:21,166 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:21,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9583 states. [2021-05-22 02:08:21,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9583 to 5093. [2021-05-22 02:08:21,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 5092 states have (on average 4.747250589159465) internal successors, (24173), 5092 states have internal predecessors, (24173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:21,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 24173 transitions. [2021-05-22 02:08:21,393 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 24173 transitions. Word has length 29 [2021-05-22 02:08:21,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:21,393 INFO L482 AbstractCegarLoop]: Abstraction has 5093 states and 24173 transitions. [2021-05-22 02:08:21,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:21,393 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 24173 transitions. [2021-05-22 02:08:21,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:21,401 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:21,401 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:21,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1318 [2021-05-22 02:08:21,401 INFO L430 AbstractCegarLoop]: === Iteration 1320 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:21,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:21,401 INFO L82 PathProgramCache]: Analyzing trace with hash 218857449, now seen corresponding path program 1315 times [2021-05-22 02:08:21,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:21,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522241704] [2021-05-22 02:08:21,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:21,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:21,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:21,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522241704] [2021-05-22 02:08:21,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522241704] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:21,508 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:21,508 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:21,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002839215] [2021-05-22 02:08:21,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:21,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:21,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:21,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:21,508 INFO L87 Difference]: Start difference. First operand 5093 states and 24173 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:21,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:21,613 INFO L93 Difference]: Finished difference Result 10412 states and 46602 transitions. [2021-05-22 02:08:21,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:21,613 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:21,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:21,636 INFO L225 Difference]: With dead ends: 10412 [2021-05-22 02:08:21,636 INFO L226 Difference]: Without dead ends: 9997 [2021-05-22 02:08:21,636 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:21,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9997 states. [2021-05-22 02:08:21,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9997 to 5165. [2021-05-22 02:08:21,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.739155693261038) internal successors, (24473), 5164 states have internal predecessors, (24473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:21,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24473 transitions. [2021-05-22 02:08:21,861 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24473 transitions. Word has length 29 [2021-05-22 02:08:21,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:21,861 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24473 transitions. [2021-05-22 02:08:21,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:21,861 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24473 transitions. [2021-05-22 02:08:21,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:21,869 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:21,869 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:21,869 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1319 [2021-05-22 02:08:21,869 INFO L430 AbstractCegarLoop]: === Iteration 1321 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:21,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:21,870 INFO L82 PathProgramCache]: Analyzing trace with hash -627939513, now seen corresponding path program 1316 times [2021-05-22 02:08:21,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:21,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112388953] [2021-05-22 02:08:21,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:21,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:21,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112388953] [2021-05-22 02:08:21,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112388953] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:21,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:21,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:21,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319851048] [2021-05-22 02:08:21,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:21,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:21,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:21,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:21,976 INFO L87 Difference]: Start difference. First operand 5165 states and 24473 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:22,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:22,091 INFO L93 Difference]: Finished difference Result 10472 states and 46818 transitions. [2021-05-22 02:08:22,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:22,091 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:22,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:22,117 INFO L225 Difference]: With dead ends: 10472 [2021-05-22 02:08:22,117 INFO L226 Difference]: Without dead ends: 9949 [2021-05-22 02:08:22,117 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:22,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9949 states. [2021-05-22 02:08:22,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9949 to 5117. [2021-05-22 02:08:22,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.7445269741985925) internal successors, (24273), 5116 states have internal predecessors, (24273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:22,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24273 transitions. [2021-05-22 02:08:22,344 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24273 transitions. Word has length 29 [2021-05-22 02:08:22,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:22,344 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24273 transitions. [2021-05-22 02:08:22,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:22,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24273 transitions. [2021-05-22 02:08:22,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:22,352 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:22,352 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:22,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1320 [2021-05-22 02:08:22,352 INFO L430 AbstractCegarLoop]: === Iteration 1322 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:22,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:22,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1814155193, now seen corresponding path program 1317 times [2021-05-22 02:08:22,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:22,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916897183] [2021-05-22 02:08:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:22,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:22,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:22,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916897183] [2021-05-22 02:08:22,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916897183] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:22,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:22,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:22,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612107803] [2021-05-22 02:08:22,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:22,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:22,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:22,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:22,450 INFO L87 Difference]: Start difference. First operand 5117 states and 24273 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:22,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:22,544 INFO L93 Difference]: Finished difference Result 10304 states and 46138 transitions. [2021-05-22 02:08:22,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:22,545 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:22,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:22,571 INFO L225 Difference]: With dead ends: 10304 [2021-05-22 02:08:22,571 INFO L226 Difference]: Without dead ends: 9889 [2021-05-22 02:08:22,571 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 105.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:22,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9889 states. [2021-05-22 02:08:22,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9889 to 5165. [2021-05-22 02:08:22,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5165 states, 5164 states have (on average 4.7345081332300545) internal successors, (24449), 5164 states have internal predecessors, (24449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:22,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5165 states to 5165 states and 24449 transitions. [2021-05-22 02:08:22,793 INFO L78 Accepts]: Start accepts. Automaton has 5165 states and 24449 transitions. Word has length 29 [2021-05-22 02:08:22,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:22,793 INFO L482 AbstractCegarLoop]: Abstraction has 5165 states and 24449 transitions. [2021-05-22 02:08:22,793 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:22,793 INFO L276 IsEmpty]: Start isEmpty. Operand 5165 states and 24449 transitions. [2021-05-22 02:08:22,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:22,801 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:22,801 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:22,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1321 [2021-05-22 02:08:22,801 INFO L430 AbstractCegarLoop]: === Iteration 1323 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:22,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:22,802 INFO L82 PathProgramCache]: Analyzing trace with hash -277555129, now seen corresponding path program 1318 times [2021-05-22 02:08:22,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:22,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534018630] [2021-05-22 02:08:22,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:22,896 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:22,896 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534018630] [2021-05-22 02:08:22,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534018630] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:22,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:22,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:22,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927008981] [2021-05-22 02:08:22,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:22,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:22,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:22,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:22,897 INFO L87 Difference]: Start difference. First operand 5165 states and 24449 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:23,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:23,038 INFO L93 Difference]: Finished difference Result 10032 states and 45129 transitions. [2021-05-22 02:08:23,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:23,039 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:23,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:23,063 INFO L225 Difference]: With dead ends: 10032 [2021-05-22 02:08:23,063 INFO L226 Difference]: Without dead ends: 9521 [2021-05-22 02:08:23,063 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:23,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9521 states. [2021-05-22 02:08:23,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9521 to 5117. [2021-05-22 02:08:23,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5117 states, 5116 states have (on average 4.739835809225958) internal successors, (24249), 5116 states have internal predecessors, (24249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:23,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 24249 transitions. [2021-05-22 02:08:23,279 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 24249 transitions. Word has length 29 [2021-05-22 02:08:23,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:23,279 INFO L482 AbstractCegarLoop]: Abstraction has 5117 states and 24249 transitions. [2021-05-22 02:08:23,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:23,279 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 24249 transitions. [2021-05-22 02:08:23,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:23,288 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:23,288 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:23,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1322 [2021-05-22 02:08:23,288 INFO L430 AbstractCegarLoop]: === Iteration 1324 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:23,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:23,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1624064037, now seen corresponding path program 1319 times [2021-05-22 02:08:23,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:23,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921102573] [2021-05-22 02:08:23,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:23,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:23,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:23,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921102573] [2021-05-22 02:08:23,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921102573] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:23,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:23,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:23,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988933267] [2021-05-22 02:08:23,384 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:23,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:23,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:23,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:23,384 INFO L87 Difference]: Start difference. First operand 5117 states and 24249 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:23,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:23,488 INFO L93 Difference]: Finished difference Result 10388 states and 46502 transitions. [2021-05-22 02:08:23,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:23,488 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:23,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:23,513 INFO L225 Difference]: With dead ends: 10388 [2021-05-22 02:08:23,513 INFO L226 Difference]: Without dead ends: 9913 [2021-05-22 02:08:23,514 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:23,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9913 states. [2021-05-22 02:08:23,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9913 to 5189. [2021-05-22 02:08:23,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 4.727255204317657) internal successors, (24525), 5188 states have internal predecessors, (24525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:23,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 24525 transitions. [2021-05-22 02:08:23,746 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 24525 transitions. Word has length 29 [2021-05-22 02:08:23,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:23,747 INFO L482 AbstractCegarLoop]: Abstraction has 5189 states and 24525 transitions. [2021-05-22 02:08:23,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:23,747 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 24525 transitions. [2021-05-22 02:08:23,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:23,755 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:23,755 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:23,755 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1323 [2021-05-22 02:08:23,756 INFO L430 AbstractCegarLoop]: === Iteration 1325 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:23,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:23,756 INFO L82 PathProgramCache]: Analyzing trace with hash 450104327, now seen corresponding path program 1320 times [2021-05-22 02:08:23,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:23,756 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756309704] [2021-05-22 02:08:23,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:23,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:23,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:23,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756309704] [2021-05-22 02:08:23,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756309704] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:23,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:23,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:23,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227192528] [2021-05-22 02:08:23,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:23,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:23,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:23,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:23,850 INFO L87 Difference]: Start difference. First operand 5189 states and 24525 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:23,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:23,966 INFO L93 Difference]: Finished difference Result 10056 states and 45205 transitions. [2021-05-22 02:08:23,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:23,967 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:23,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:23,994 INFO L225 Difference]: With dead ends: 10056 [2021-05-22 02:08:23,994 INFO L226 Difference]: Without dead ends: 9481 [2021-05-22 02:08:23,994 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:24,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9481 states. [2021-05-22 02:08:24,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9481 to 5077. [2021-05-22 02:08:24,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5077 states, 5076 states have (on average 4.753940110323089) internal successors, (24131), 5076 states have internal predecessors, (24131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:24,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5077 states to 5077 states and 24131 transitions. [2021-05-22 02:08:24,228 INFO L78 Accepts]: Start accepts. Automaton has 5077 states and 24131 transitions. Word has length 29 [2021-05-22 02:08:24,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:24,228 INFO L482 AbstractCegarLoop]: Abstraction has 5077 states and 24131 transitions. [2021-05-22 02:08:24,228 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:24,228 INFO L276 IsEmpty]: Start isEmpty. Operand 5077 states and 24131 transitions. [2021-05-22 02:08:24,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:24,236 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:24,236 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:24,236 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1324 [2021-05-22 02:08:24,236 INFO L430 AbstractCegarLoop]: === Iteration 1326 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:24,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:24,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1093914079, now seen corresponding path program 1321 times [2021-05-22 02:08:24,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:24,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826380406] [2021-05-22 02:08:24,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:24,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:24,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826380406] [2021-05-22 02:08:24,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826380406] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:24,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:24,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:24,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583984364] [2021-05-22 02:08:24,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:24,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:24,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:24,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:24,345 INFO L87 Difference]: Start difference. First operand 5077 states and 24131 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:24,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:24,450 INFO L93 Difference]: Finished difference Result 12081 states and 53951 transitions. [2021-05-22 02:08:24,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:24,450 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:24,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:24,481 INFO L225 Difference]: With dead ends: 12081 [2021-05-22 02:08:24,481 INFO L226 Difference]: Without dead ends: 11539 [2021-05-22 02:08:24,481 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:24,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11539 states. [2021-05-22 02:08:24,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11539 to 5330. [2021-05-22 02:08:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 5329 states have (on average 4.727153312066053) internal successors, (25191), 5329 states have internal predecessors, (25191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:24,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 25191 transitions. [2021-05-22 02:08:24,733 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 25191 transitions. Word has length 29 [2021-05-22 02:08:24,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:24,733 INFO L482 AbstractCegarLoop]: Abstraction has 5330 states and 25191 transitions. [2021-05-22 02:08:24,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:24,734 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 25191 transitions. [2021-05-22 02:08:24,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:24,743 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:24,743 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:24,743 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1325 [2021-05-22 02:08:24,743 INFO L430 AbstractCegarLoop]: === Iteration 1327 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:24,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:24,743 INFO L82 PathProgramCache]: Analyzing trace with hash -12851453, now seen corresponding path program 1322 times [2021-05-22 02:08:24,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:24,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027336563] [2021-05-22 02:08:24,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:24,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:24,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027336563] [2021-05-22 02:08:24,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027336563] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:24,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:24,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:24,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862600017] [2021-05-22 02:08:24,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:24,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:24,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:24,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:24,850 INFO L87 Difference]: Start difference. First operand 5330 states and 25191 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:24,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:24,966 INFO L93 Difference]: Finished difference Result 12016 states and 53582 transitions. [2021-05-22 02:08:24,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:24,967 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:24,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:24,994 INFO L225 Difference]: With dead ends: 12016 [2021-05-22 02:08:24,995 INFO L226 Difference]: Without dead ends: 11396 [2021-05-22 02:08:24,995 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:25,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11396 states. [2021-05-22 02:08:25,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11396 to 5187. [2021-05-22 02:08:25,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.746625530273814) internal successors, (24616), 5186 states have internal predecessors, (24616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:25,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24616 transitions. [2021-05-22 02:08:25,240 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24616 transitions. Word has length 29 [2021-05-22 02:08:25,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:25,241 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24616 transitions. [2021-05-22 02:08:25,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:25,241 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24616 transitions. [2021-05-22 02:08:25,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:25,249 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:25,249 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:25,249 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1326 [2021-05-22 02:08:25,249 INFO L430 AbstractCegarLoop]: === Iteration 1328 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:25,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:25,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1574816125, now seen corresponding path program 1323 times [2021-05-22 02:08:25,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:25,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074360777] [2021-05-22 02:08:25,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:25,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:25,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074360777] [2021-05-22 02:08:25,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074360777] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:25,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:25,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:25,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926107351] [2021-05-22 02:08:25,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:25,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:25,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:25,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:25,365 INFO L87 Difference]: Start difference. First operand 5187 states and 24616 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:25,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:25,464 INFO L93 Difference]: Finished difference Result 11956 states and 53364 transitions. [2021-05-22 02:08:25,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:25,464 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:25,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:25,494 INFO L225 Difference]: With dead ends: 11956 [2021-05-22 02:08:25,495 INFO L226 Difference]: Without dead ends: 11414 [2021-05-22 02:08:25,495 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:25,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11414 states. [2021-05-22 02:08:25,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11414 to 5267. [2021-05-22 02:08:25,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5267 states, 5266 states have (on average 4.729206228636536) internal successors, (24904), 5266 states have internal predecessors, (24904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:25,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5267 states to 5267 states and 24904 transitions. [2021-05-22 02:08:25,739 INFO L78 Accepts]: Start accepts. Automaton has 5267 states and 24904 transitions. Word has length 29 [2021-05-22 02:08:25,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:25,740 INFO L482 AbstractCegarLoop]: Abstraction has 5267 states and 24904 transitions. [2021-05-22 02:08:25,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:25,740 INFO L276 IsEmpty]: Start isEmpty. Operand 5267 states and 24904 transitions. [2021-05-22 02:08:25,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:25,749 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:25,749 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:25,749 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1327 [2021-05-22 02:08:25,749 INFO L430 AbstractCegarLoop]: === Iteration 1329 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:25,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:25,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1031904899, now seen corresponding path program 1324 times [2021-05-22 02:08:25,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:25,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166939599] [2021-05-22 02:08:25,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:25,863 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:25,863 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166939599] [2021-05-22 02:08:25,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166939599] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:25,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:25,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:25,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208185536] [2021-05-22 02:08:25,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:25,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:25,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:25,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:25,864 INFO L87 Difference]: Start difference. First operand 5267 states and 24904 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:25,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:25,962 INFO L93 Difference]: Finished difference Result 11829 states and 52757 transitions. [2021-05-22 02:08:25,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:25,962 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:25,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:25,992 INFO L225 Difference]: With dead ends: 11829 [2021-05-22 02:08:25,992 INFO L226 Difference]: Without dead ends: 11334 [2021-05-22 02:08:25,993 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:26,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11334 states. [2021-05-22 02:08:26,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11334 to 5187. [2021-05-22 02:08:26,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.738912456613961) internal successors, (24576), 5186 states have internal predecessors, (24576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:26,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24576 transitions. [2021-05-22 02:08:26,233 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24576 transitions. Word has length 29 [2021-05-22 02:08:26,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:26,233 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24576 transitions. [2021-05-22 02:08:26,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:26,233 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24576 transitions. [2021-05-22 02:08:26,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:26,242 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:26,242 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:26,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1328 [2021-05-22 02:08:26,242 INFO L430 AbstractCegarLoop]: === Iteration 1330 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:26,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:26,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1186811163, now seen corresponding path program 1325 times [2021-05-22 02:08:26,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:26,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614320108] [2021-05-22 02:08:26,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:26,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:26,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614320108] [2021-05-22 02:08:26,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614320108] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:26,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:26,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:26,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884307345] [2021-05-22 02:08:26,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:26,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:26,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:26,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:26,358 INFO L87 Difference]: Start difference. First operand 5187 states and 24576 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:26,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:26,471 INFO L93 Difference]: Finished difference Result 11794 states and 52664 transitions. [2021-05-22 02:08:26,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:26,471 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:26,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:26,501 INFO L225 Difference]: With dead ends: 11794 [2021-05-22 02:08:26,502 INFO L226 Difference]: Without dead ends: 11317 [2021-05-22 02:08:26,502 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:26,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11317 states. [2021-05-22 02:08:26,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11317 to 5235. [2021-05-22 02:08:26,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5235 states, 5234 states have (on average 4.729079098204051) internal successors, (24752), 5234 states have internal predecessors, (24752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:26,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5235 states to 5235 states and 24752 transitions. [2021-05-22 02:08:26,736 INFO L78 Accepts]: Start accepts. Automaton has 5235 states and 24752 transitions. Word has length 29 [2021-05-22 02:08:26,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:26,736 INFO L482 AbstractCegarLoop]: Abstraction has 5235 states and 24752 transitions. [2021-05-22 02:08:26,736 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:26,736 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 24752 transitions. [2021-05-22 02:08:26,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:26,744 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:26,744 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:26,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1329 [2021-05-22 02:08:26,744 INFO L430 AbstractCegarLoop]: === Iteration 1331 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:26,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:26,744 INFO L82 PathProgramCache]: Analyzing trace with hash -2033608125, now seen corresponding path program 1326 times [2021-05-22 02:08:26,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:26,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610630099] [2021-05-22 02:08:26,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:26,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:26,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610630099] [2021-05-22 02:08:26,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610630099] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:26,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:26,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:26,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603779725] [2021-05-22 02:08:26,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:26,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:26,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:26,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:26,859 INFO L87 Difference]: Start difference. First operand 5235 states and 24752 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:26,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:26,961 INFO L93 Difference]: Finished difference Result 11732 states and 52347 transitions. [2021-05-22 02:08:26,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:26,962 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:26,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:26,989 INFO L225 Difference]: With dead ends: 11732 [2021-05-22 02:08:26,989 INFO L226 Difference]: Without dead ends: 11213 [2021-05-22 02:08:26,989 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:27,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11213 states. [2021-05-22 02:08:27,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11213 to 5131. [2021-05-22 02:08:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.751656920077973) internal successors, (24376), 5130 states have internal predecessors, (24376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24376 transitions. [2021-05-22 02:08:27,229 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24376 transitions. Word has length 29 [2021-05-22 02:08:27,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:27,229 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24376 transitions. [2021-05-22 02:08:27,229 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:27,230 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24376 transitions. [2021-05-22 02:08:27,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:27,237 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:27,237 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:27,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1330 [2021-05-22 02:08:27,238 INFO L430 AbstractCegarLoop]: === Iteration 1332 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:27,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:27,238 INFO L82 PathProgramCache]: Analyzing trace with hash 615687683, now seen corresponding path program 1327 times [2021-05-22 02:08:27,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:27,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943859624] [2021-05-22 02:08:27,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:27,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:27,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943859624] [2021-05-22 02:08:27,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943859624] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:27,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:27,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:27,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810812278] [2021-05-22 02:08:27,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:27,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:27,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:27,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:27,342 INFO L87 Difference]: Start difference. First operand 5131 states and 24376 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:27,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:27,450 INFO L93 Difference]: Finished difference Result 12232 states and 54610 transitions. [2021-05-22 02:08:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:27,451 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:27,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:27,481 INFO L225 Difference]: With dead ends: 12232 [2021-05-22 02:08:27,482 INFO L226 Difference]: Without dead ends: 11690 [2021-05-22 02:08:27,482 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 110.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:27,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11690 states. [2021-05-22 02:08:27,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11690 to 5361. [2021-05-22 02:08:27,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5361 states, 5360 states have (on average 4.71865671641791) internal successors, (25292), 5360 states have internal predecessors, (25292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:27,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5361 states to 5361 states and 25292 transitions. [2021-05-22 02:08:27,729 INFO L78 Accepts]: Start accepts. Automaton has 5361 states and 25292 transitions. Word has length 29 [2021-05-22 02:08:27,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:27,729 INFO L482 AbstractCegarLoop]: Abstraction has 5361 states and 25292 transitions. [2021-05-22 02:08:27,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:27,729 INFO L276 IsEmpty]: Start isEmpty. Operand 5361 states and 25292 transitions. [2021-05-22 02:08:27,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:27,738 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:27,738 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:27,738 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1331 [2021-05-22 02:08:27,738 INFO L430 AbstractCegarLoop]: === Iteration 1333 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:27,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:27,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1696750309, now seen corresponding path program 1328 times [2021-05-22 02:08:27,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:27,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851320291] [2021-05-22 02:08:27,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:27,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:27,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851320291] [2021-05-22 02:08:27,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851320291] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:27,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:27,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:27,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330575352] [2021-05-22 02:08:27,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:27,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:27,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:27,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:27,840 INFO L87 Difference]: Start difference. First operand 5361 states and 25292 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:27,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:27,949 INFO L93 Difference]: Finished difference Result 12167 states and 54241 transitions. [2021-05-22 02:08:27,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:27,949 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:27,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:27,978 INFO L225 Difference]: With dead ends: 12167 [2021-05-22 02:08:27,978 INFO L226 Difference]: Without dead ends: 11547 [2021-05-22 02:08:27,978 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:28,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11547 states. [2021-05-22 02:08:28,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11547 to 5218. [2021-05-22 02:08:28,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5218 states, 5217 states have (on average 4.734905117883842) internal successors, (24702), 5217 states have internal predecessors, (24702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:28,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5218 states to 5218 states and 24702 transitions. [2021-05-22 02:08:28,221 INFO L78 Accepts]: Start accepts. Automaton has 5218 states and 24702 transitions. Word has length 29 [2021-05-22 02:08:28,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:28,221 INFO L482 AbstractCegarLoop]: Abstraction has 5218 states and 24702 transitions. [2021-05-22 02:08:28,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:28,221 INFO L276 IsEmpty]: Start isEmpty. Operand 5218 states and 24702 transitions. [2021-05-22 02:08:28,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:28,229 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:28,229 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:28,229 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1332 [2021-05-22 02:08:28,229 INFO L430 AbstractCegarLoop]: === Iteration 1334 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:28,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:28,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1708658179, now seen corresponding path program 1329 times [2021-05-22 02:08:28,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:28,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268300235] [2021-05-22 02:08:28,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:28,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:28,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:28,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268300235] [2021-05-22 02:08:28,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268300235] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:28,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:28,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:28,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808475410] [2021-05-22 02:08:28,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:28,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:28,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:28,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:28,334 INFO L87 Difference]: Start difference. First operand 5218 states and 24702 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:28,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:28,427 INFO L93 Difference]: Finished difference Result 12197 states and 54419 transitions. [2021-05-22 02:08:28,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:28,427 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:28,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:28,458 INFO L225 Difference]: With dead ends: 12197 [2021-05-22 02:08:28,459 INFO L226 Difference]: Without dead ends: 11655 [2021-05-22 02:08:28,459 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:28,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11655 states. [2021-05-22 02:08:28,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11655 to 5328. [2021-05-22 02:08:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5328 states, 5327 states have (on average 4.7131593767599025) internal successors, (25107), 5327 states have internal predecessors, (25107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:28,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 25107 transitions. [2021-05-22 02:08:28,710 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 25107 transitions. Word has length 29 [2021-05-22 02:08:28,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:28,710 INFO L482 AbstractCegarLoop]: Abstraction has 5328 states and 25107 transitions. [2021-05-22 02:08:28,710 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:28,710 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 25107 transitions. [2021-05-22 02:08:28,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:28,718 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:28,719 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:28,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1333 [2021-05-22 02:08:28,719 INFO L430 AbstractCegarLoop]: === Iteration 1335 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:28,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:28,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1758225923, now seen corresponding path program 1330 times [2021-05-22 02:08:28,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:28,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690256889] [2021-05-22 02:08:28,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:28,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:28,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:28,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690256889] [2021-05-22 02:08:28,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690256889] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:28,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:28,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:28,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233832095] [2021-05-22 02:08:28,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:28,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:28,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:28,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:28,820 INFO L87 Difference]: Start difference. First operand 5328 states and 25107 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:28,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:28,924 INFO L93 Difference]: Finished difference Result 12130 states and 54046 transitions. [2021-05-22 02:08:28,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:28,925 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:28,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:28,953 INFO L225 Difference]: With dead ends: 12130 [2021-05-22 02:08:28,953 INFO L226 Difference]: Without dead ends: 11545 [2021-05-22 02:08:28,954 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:29,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11545 states. [2021-05-22 02:08:29,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11545 to 5218. [2021-05-22 02:08:29,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5218 states, 5217 states have (on average 4.724362660532873) internal successors, (24647), 5217 states have internal predecessors, (24647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:29,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5218 states to 5218 states and 24647 transitions. [2021-05-22 02:08:29,184 INFO L78 Accepts]: Start accepts. Automaton has 5218 states and 24647 transitions. Word has length 29 [2021-05-22 02:08:29,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:29,184 INFO L482 AbstractCegarLoop]: Abstraction has 5218 states and 24647 transitions. [2021-05-22 02:08:29,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:29,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5218 states and 24647 transitions. [2021-05-22 02:08:29,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:29,192 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:29,192 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:29,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1334 [2021-05-22 02:08:29,192 INFO L430 AbstractCegarLoop]: === Iteration 1336 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:29,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:29,192 INFO L82 PathProgramCache]: Analyzing trace with hash 2096663141, now seen corresponding path program 1331 times [2021-05-22 02:08:29,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:29,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726146667] [2021-05-22 02:08:29,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:29,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:29,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726146667] [2021-05-22 02:08:29,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726146667] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:29,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:29,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:29,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888495985] [2021-05-22 02:08:29,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:29,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:29,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:29,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:29,295 INFO L87 Difference]: Start difference. First operand 5218 states and 24647 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:29,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:29,402 INFO L93 Difference]: Finished difference Result 12035 states and 53704 transitions. [2021-05-22 02:08:29,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:29,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:29,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:29,431 INFO L225 Difference]: With dead ends: 12035 [2021-05-22 02:08:29,431 INFO L226 Difference]: Without dead ends: 11558 [2021-05-22 02:08:29,431 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:29,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11558 states. [2021-05-22 02:08:29,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11558 to 5296. [2021-05-22 02:08:29,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5296 states, 5295 states have (on average 4.710103871576959) internal successors, (24940), 5295 states have internal predecessors, (24940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:29,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5296 states to 5296 states and 24940 transitions. [2021-05-22 02:08:29,675 INFO L78 Accepts]: Start accepts. Automaton has 5296 states and 24940 transitions. Word has length 29 [2021-05-22 02:08:29,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:29,675 INFO L482 AbstractCegarLoop]: Abstraction has 5296 states and 24940 transitions. [2021-05-22 02:08:29,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:29,675 INFO L276 IsEmpty]: Start isEmpty. Operand 5296 states and 24940 transitions. [2021-05-22 02:08:29,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:29,684 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:29,684 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:29,684 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1335 [2021-05-22 02:08:29,684 INFO L430 AbstractCegarLoop]: === Iteration 1337 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:29,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:29,684 INFO L82 PathProgramCache]: Analyzing trace with hash -19416509, now seen corresponding path program 1332 times [2021-05-22 02:08:29,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:29,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195204749] [2021-05-22 02:08:29,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:29,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:29,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195204749] [2021-05-22 02:08:29,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195204749] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:29,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:29,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:29,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634774003] [2021-05-22 02:08:29,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:29,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:29,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:29,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:29,787 INFO L87 Difference]: Start difference. First operand 5296 states and 24940 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:29,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:29,894 INFO L93 Difference]: Finished difference Result 12033 states and 53621 transitions. [2021-05-22 02:08:29,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:29,895 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:29,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:29,923 INFO L225 Difference]: With dead ends: 12033 [2021-05-22 02:08:29,923 INFO L226 Difference]: Without dead ends: 11393 [2021-05-22 02:08:29,923 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:30,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11393 states. [2021-05-22 02:08:30,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11393 to 5131. [2021-05-22 02:08:30,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.744639376218323) internal successors, (24340), 5130 states have internal predecessors, (24340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:30,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24340 transitions. [2021-05-22 02:08:30,173 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24340 transitions. Word has length 29 [2021-05-22 02:08:30,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:30,173 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24340 transitions. [2021-05-22 02:08:30,173 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:30,173 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24340 transitions. [2021-05-22 02:08:30,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:30,182 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:30,182 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:30,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1336 [2021-05-22 02:08:30,182 INFO L430 AbstractCegarLoop]: === Iteration 1338 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:30,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:30,182 INFO L82 PathProgramCache]: Analyzing trace with hash -173698587, now seen corresponding path program 1333 times [2021-05-22 02:08:30,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:30,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943631749] [2021-05-22 02:08:30,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:30,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:30,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943631749] [2021-05-22 02:08:30,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943631749] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:30,299 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:30,299 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:30,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967424518] [2021-05-22 02:08:30,300 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:30,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:30,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:30,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:30,300 INFO L87 Difference]: Start difference. First operand 5131 states and 24340 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:30,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:30,395 INFO L93 Difference]: Finished difference Result 11905 states and 53172 transitions. [2021-05-22 02:08:30,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:30,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:30,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:30,423 INFO L225 Difference]: With dead ends: 11905 [2021-05-22 02:08:30,423 INFO L226 Difference]: Without dead ends: 11363 [2021-05-22 02:08:30,423 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:30,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11363 states. [2021-05-22 02:08:30,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11363 to 5251. [2021-05-22 02:08:30,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 4.729904761904762) internal successors, (24832), 5250 states have internal predecessors, (24832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:30,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 24832 transitions. [2021-05-22 02:08:30,670 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 24832 transitions. Word has length 29 [2021-05-22 02:08:30,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:30,670 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 24832 transitions. [2021-05-22 02:08:30,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:30,670 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 24832 transitions. [2021-05-22 02:08:30,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:30,679 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:30,679 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:30,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1337 [2021-05-22 02:08:30,679 INFO L430 AbstractCegarLoop]: === Iteration 1339 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:30,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:30,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1861944859, now seen corresponding path program 1334 times [2021-05-22 02:08:30,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:30,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691137654] [2021-05-22 02:08:30,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:30,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:30,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691137654] [2021-05-22 02:08:30,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691137654] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:30,797 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:30,797 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:30,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875012068] [2021-05-22 02:08:30,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:30,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:30,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:30,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:30,797 INFO L87 Difference]: Start difference. First operand 5251 states and 24832 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:30,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:30,886 INFO L93 Difference]: Finished difference Result 11778 states and 52565 transitions. [2021-05-22 02:08:30,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:30,887 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:30,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:30,915 INFO L225 Difference]: With dead ends: 11778 [2021-05-22 02:08:30,915 INFO L226 Difference]: Without dead ends: 11283 [2021-05-22 02:08:30,915 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:31,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11283 states. [2021-05-22 02:08:31,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11283 to 5171. [2021-05-22 02:08:31,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.739651837524178) internal successors, (24504), 5170 states have internal predecessors, (24504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:31,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24504 transitions. [2021-05-22 02:08:31,156 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24504 transitions. Word has length 29 [2021-05-22 02:08:31,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:31,156 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24504 transitions. [2021-05-22 02:08:31,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:31,156 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24504 transitions. [2021-05-22 02:08:31,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:31,165 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:31,165 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:31,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1338 [2021-05-22 02:08:31,165 INFO L430 AbstractCegarLoop]: === Iteration 1340 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:31,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:31,165 INFO L82 PathProgramCache]: Analyzing trace with hash 2098207171, now seen corresponding path program 1335 times [2021-05-22 02:08:31,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:31,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333915191] [2021-05-22 02:08:31,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:31,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:31,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:31,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333915191] [2021-05-22 02:08:31,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333915191] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:31,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:31,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:31,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473716970] [2021-05-22 02:08:31,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:31,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:31,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:31,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:31,274 INFO L87 Difference]: Start difference. First operand 5171 states and 24504 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:31,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:31,365 INFO L93 Difference]: Finished difference Result 11995 states and 53543 transitions. [2021-05-22 02:08:31,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:31,365 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:31,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:31,393 INFO L225 Difference]: With dead ends: 11995 [2021-05-22 02:08:31,394 INFO L226 Difference]: Without dead ends: 11453 [2021-05-22 02:08:31,394 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:31,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11453 states. [2021-05-22 02:08:31,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11453 to 5281. [2021-05-22 02:08:31,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 5280 states have (on average 4.7176136363636365) internal successors, (24909), 5280 states have internal predecessors, (24909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:31,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 24909 transitions. [2021-05-22 02:08:31,640 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 24909 transitions. Word has length 29 [2021-05-22 02:08:31,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:31,640 INFO L482 AbstractCegarLoop]: Abstraction has 5281 states and 24909 transitions. [2021-05-22 02:08:31,640 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:31,640 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 24909 transitions. [2021-05-22 02:08:31,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:31,649 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:31,649 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:31,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1339 [2021-05-22 02:08:31,649 INFO L430 AbstractCegarLoop]: === Iteration 1341 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:31,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:31,649 INFO L82 PathProgramCache]: Analyzing trace with hash -827139611, now seen corresponding path program 1336 times [2021-05-22 02:08:31,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:31,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607945627] [2021-05-22 02:08:31,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:31,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:31,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607945627] [2021-05-22 02:08:31,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607945627] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:31,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:31,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:31,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128080330] [2021-05-22 02:08:31,759 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:31,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:31,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:31,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:31,759 INFO L87 Difference]: Start difference. First operand 5281 states and 24909 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:31,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:31,870 INFO L93 Difference]: Finished difference Result 11928 states and 53170 transitions. [2021-05-22 02:08:31,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:31,871 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:31,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:31,899 INFO L225 Difference]: With dead ends: 11928 [2021-05-22 02:08:31,899 INFO L226 Difference]: Without dead ends: 11343 [2021-05-22 02:08:31,899 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:32,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11343 states. [2021-05-22 02:08:32,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11343 to 5171. [2021-05-22 02:08:32,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5171 states, 5170 states have (on average 4.731914893617021) internal successors, (24464), 5170 states have internal predecessors, (24464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:32,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5171 states to 5171 states and 24464 transitions. [2021-05-22 02:08:32,146 INFO L78 Accepts]: Start accepts. Automaton has 5171 states and 24464 transitions. Word has length 29 [2021-05-22 02:08:32,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:32,146 INFO L482 AbstractCegarLoop]: Abstraction has 5171 states and 24464 transitions. [2021-05-22 02:08:32,146 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:32,146 INFO L276 IsEmpty]: Start isEmpty. Operand 5171 states and 24464 transitions. [2021-05-22 02:08:32,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:32,155 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:32,155 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:32,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1340 [2021-05-22 02:08:32,155 INFO L430 AbstractCegarLoop]: === Iteration 1342 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:32,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:32,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1471983131, now seen corresponding path program 1337 times [2021-05-22 02:08:32,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:32,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107025853] [2021-05-22 02:08:32,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:32,276 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:32,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107025853] [2021-05-22 02:08:32,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107025853] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:32,276 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:32,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:32,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667546874] [2021-05-22 02:08:32,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:32,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:32,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:32,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:32,277 INFO L87 Difference]: Start difference. First operand 5171 states and 24464 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:32,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:32,367 INFO L93 Difference]: Finished difference Result 11679 states and 52158 transitions. [2021-05-22 02:08:32,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:32,367 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:32,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:32,395 INFO L225 Difference]: With dead ends: 11679 [2021-05-22 02:08:32,395 INFO L226 Difference]: Without dead ends: 11264 [2021-05-22 02:08:32,395 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11264 states. [2021-05-22 02:08:32,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11264 to 5219. [2021-05-22 02:08:32,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5219 states, 5218 states have (on average 4.722115753162131) internal successors, (24640), 5218 states have internal predecessors, (24640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:32,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 24640 transitions. [2021-05-22 02:08:32,642 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 24640 transitions. Word has length 29 [2021-05-22 02:08:32,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:32,642 INFO L482 AbstractCegarLoop]: Abstraction has 5219 states and 24640 transitions. [2021-05-22 02:08:32,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:32,642 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 24640 transitions. [2021-05-22 02:08:32,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:32,651 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:32,651 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:32,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1341 [2021-05-22 02:08:32,651 INFO L430 AbstractCegarLoop]: === Iteration 1343 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:32,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:32,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1976187203, now seen corresponding path program 1338 times [2021-05-22 02:08:32,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:32,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421653895] [2021-05-22 02:08:32,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:32,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:32,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:32,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421653895] [2021-05-22 02:08:32,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421653895] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:32,772 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:32,772 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:32,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215598199] [2021-05-22 02:08:32,772 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:32,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:32,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:32,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:32,772 INFO L87 Difference]: Start difference. First operand 5219 states and 24640 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:32,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:32,893 INFO L93 Difference]: Finished difference Result 11739 states and 52374 transitions. [2021-05-22 02:08:32,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:32,893 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:32,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:32,923 INFO L225 Difference]: With dead ends: 11739 [2021-05-22 02:08:32,923 INFO L226 Difference]: Without dead ends: 11176 [2021-05-22 02:08:32,923 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:33,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11176 states. [2021-05-22 02:08:33,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11176 to 5131. [2021-05-22 02:08:33,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.7407407407407405) internal successors, (24320), 5130 states have internal predecessors, (24320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:33,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24320 transitions. [2021-05-22 02:08:33,218 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24320 transitions. Word has length 29 [2021-05-22 02:08:33,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:33,218 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24320 transitions. [2021-05-22 02:08:33,218 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:33,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24320 transitions. [2021-05-22 02:08:33,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:33,228 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:33,228 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:33,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1342 [2021-05-22 02:08:33,228 INFO L430 AbstractCegarLoop]: === Iteration 1344 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:33,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:33,228 INFO L82 PathProgramCache]: Analyzing trace with hash -94177849, now seen corresponding path program 1339 times [2021-05-22 02:08:33,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:33,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573656749] [2021-05-22 02:08:33,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:33,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:33,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573656749] [2021-05-22 02:08:33,359 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573656749] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:33,359 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:33,359 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:33,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762893562] [2021-05-22 02:08:33,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:33,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:33,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:33,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:33,359 INFO L87 Difference]: Start difference. First operand 5131 states and 24320 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:33,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:33,475 INFO L93 Difference]: Finished difference Result 11598 states and 51866 transitions. [2021-05-22 02:08:33,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:33,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:33,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:33,505 INFO L225 Difference]: With dead ends: 11598 [2021-05-22 02:08:33,506 INFO L226 Difference]: Without dead ends: 11121 [2021-05-22 02:08:33,506 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:33,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11121 states. [2021-05-22 02:08:33,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11121 to 5203. [2021-05-22 02:08:33,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.73279507881584) internal successors, (24620), 5202 states have internal predecessors, (24620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:33,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24620 transitions. [2021-05-22 02:08:33,753 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24620 transitions. Word has length 29 [2021-05-22 02:08:33,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:33,753 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24620 transitions. [2021-05-22 02:08:33,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:33,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24620 transitions. [2021-05-22 02:08:33,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:33,764 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:33,764 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:33,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1343 [2021-05-22 02:08:33,765 INFO L430 AbstractCegarLoop]: === Iteration 1345 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:33,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:33,765 INFO L82 PathProgramCache]: Analyzing trace with hash -940974811, now seen corresponding path program 1340 times [2021-05-22 02:08:33,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:33,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405733519] [2021-05-22 02:08:33,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:33,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:33,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405733519] [2021-05-22 02:08:33,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405733519] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:33,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:33,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:33,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150430108] [2021-05-22 02:08:33,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:33,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:33,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:33,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:33,882 INFO L87 Difference]: Start difference. First operand 5203 states and 24620 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:33,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:33,978 INFO L93 Difference]: Finished difference Result 11536 states and 51549 transitions. [2021-05-22 02:08:33,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:33,978 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:33,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:34,007 INFO L225 Difference]: With dead ends: 11536 [2021-05-22 02:08:34,007 INFO L226 Difference]: Without dead ends: 11073 [2021-05-22 02:08:34,007 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:34,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11073 states. [2021-05-22 02:08:34,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11073 to 5155. [2021-05-22 02:08:34,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.738067520372526) internal successors, (24420), 5154 states have internal predecessors, (24420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:34,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24420 transitions. [2021-05-22 02:08:34,254 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24420 transitions. Word has length 29 [2021-05-22 02:08:34,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:34,254 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24420 transitions. [2021-05-22 02:08:34,254 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:34,254 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24420 transitions. [2021-05-22 02:08:34,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:34,264 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:34,264 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:34,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1344 [2021-05-22 02:08:34,264 INFO L430 AbstractCegarLoop]: === Iteration 1346 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:34,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:34,264 INFO L82 PathProgramCache]: Analyzing trace with hash -2117239387, now seen corresponding path program 1341 times [2021-05-22 02:08:34,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:34,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28904517] [2021-05-22 02:08:34,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:34,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:34,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:34,373 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28904517] [2021-05-22 02:08:34,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28904517] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:34,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:34,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:34,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588178308] [2021-05-22 02:08:34,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:34,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:34,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:34,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:34,373 INFO L87 Difference]: Start difference. First operand 5155 states and 24420 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:34,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:34,476 INFO L93 Difference]: Finished difference Result 11688 states and 52253 transitions. [2021-05-22 02:08:34,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:34,476 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:34,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:34,505 INFO L225 Difference]: With dead ends: 11688 [2021-05-22 02:08:34,505 INFO L226 Difference]: Without dead ends: 11211 [2021-05-22 02:08:34,505 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:34,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11211 states. [2021-05-22 02:08:34,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11211 to 5233. [2021-05-22 02:08:34,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 4.7234327217125385) internal successors, (24713), 5232 states have internal predecessors, (24713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:34,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 24713 transitions. [2021-05-22 02:08:34,751 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 24713 transitions. Word has length 29 [2021-05-22 02:08:34,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:34,751 INFO L482 AbstractCegarLoop]: Abstraction has 5233 states and 24713 transitions. [2021-05-22 02:08:34,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:34,751 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 24713 transitions. [2021-05-22 02:08:34,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:34,760 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:34,760 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:34,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1345 [2021-05-22 02:08:34,760 INFO L430 AbstractCegarLoop]: === Iteration 1347 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:34,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:34,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1381701029, now seen corresponding path program 1342 times [2021-05-22 02:08:34,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:34,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169410559] [2021-05-22 02:08:34,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:34,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:34,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169410559] [2021-05-22 02:08:34,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169410559] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:34,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:34,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:34,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999833048] [2021-05-22 02:08:34,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:34,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:34,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:34,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:34,867 INFO L87 Difference]: Start difference. First operand 5233 states and 24713 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:34,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:34,981 INFO L93 Difference]: Finished difference Result 11686 states and 52170 transitions. [2021-05-22 02:08:34,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:34,982 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:34,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:35,011 INFO L225 Difference]: With dead ends: 11686 [2021-05-22 02:08:35,011 INFO L226 Difference]: Without dead ends: 11133 [2021-05-22 02:08:35,011 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:35,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11133 states. [2021-05-22 02:08:35,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11133 to 5155. [2021-05-22 02:08:35,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.733410942956927) internal successors, (24396), 5154 states have internal predecessors, (24396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:35,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24396 transitions. [2021-05-22 02:08:35,252 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24396 transitions. Word has length 29 [2021-05-22 02:08:35,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:35,252 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24396 transitions. [2021-05-22 02:08:35,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:35,252 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24396 transitions. [2021-05-22 02:08:35,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:35,260 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:35,260 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:35,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1346 [2021-05-22 02:08:35,261 INFO L430 AbstractCegarLoop]: === Iteration 1348 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:35,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:35,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1320979843, now seen corresponding path program 1343 times [2021-05-22 02:08:35,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:35,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097556682] [2021-05-22 02:08:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:35,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:35,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:35,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097556682] [2021-05-22 02:08:35,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097556682] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:35,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:35,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:35,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735148026] [2021-05-22 02:08:35,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:35,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:35,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:35,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:35,381 INFO L87 Difference]: Start difference. First operand 5155 states and 24396 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:35,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:35,469 INFO L93 Difference]: Finished difference Result 11534 states and 51544 transitions. [2021-05-22 02:08:35,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:35,469 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:35,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:35,498 INFO L225 Difference]: With dead ends: 11534 [2021-05-22 02:08:35,498 INFO L226 Difference]: Without dead ends: 11119 [2021-05-22 02:08:35,498 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:35,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11119 states. [2021-05-22 02:08:35,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11119 to 5203. [2021-05-22 02:08:35,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.723567858515955) internal successors, (24572), 5202 states have internal predecessors, (24572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:35,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24572 transitions. [2021-05-22 02:08:35,740 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24572 transitions. Word has length 29 [2021-05-22 02:08:35,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:35,740 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24572 transitions. [2021-05-22 02:08:35,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:35,740 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24572 transitions. [2021-05-22 02:08:35,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:35,748 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:35,748 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:35,749 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1347 [2021-05-22 02:08:35,749 INFO L430 AbstractCegarLoop]: === Iteration 1349 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:35,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:35,749 INFO L82 PathProgramCache]: Analyzing trace with hash 840077797, now seen corresponding path program 1344 times [2021-05-22 02:08:35,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:35,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642909478] [2021-05-22 02:08:35,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:35,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:35,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642909478] [2021-05-22 02:08:35,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642909478] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:35,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:35,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:35,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166287765] [2021-05-22 02:08:35,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:35,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:35,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:35,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:35,865 INFO L87 Difference]: Start difference. First operand 5203 states and 24572 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:35,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:35,976 INFO L93 Difference]: Finished difference Result 11594 states and 51760 transitions. [2021-05-22 02:08:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:35,976 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:35,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:36,004 INFO L225 Difference]: With dead ends: 11594 [2021-05-22 02:08:36,004 INFO L226 Difference]: Without dead ends: 11011 [2021-05-22 02:08:36,004 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11011 states. [2021-05-22 02:08:36,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11011 to 5095. [2021-05-22 02:08:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5095 states, 5094 states have (on average 4.752650176678445) internal successors, (24210), 5094 states have internal predecessors, (24210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:36,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 24210 transitions. [2021-05-22 02:08:36,245 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 24210 transitions. Word has length 29 [2021-05-22 02:08:36,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:36,245 INFO L482 AbstractCegarLoop]: Abstraction has 5095 states and 24210 transitions. [2021-05-22 02:08:36,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:36,245 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 24210 transitions. [2021-05-22 02:08:36,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:36,253 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:36,254 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:36,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1348 [2021-05-22 02:08:36,254 INFO L430 AbstractCegarLoop]: === Iteration 1350 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:36,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:36,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1055276291, now seen corresponding path program 1345 times [2021-05-22 02:08:36,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:36,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10634709] [2021-05-22 02:08:36,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:36,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:36,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:36,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10634709] [2021-05-22 02:08:36,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10634709] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:36,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:36,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:36,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587735214] [2021-05-22 02:08:36,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:36,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:36,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:36,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:36,364 INFO L87 Difference]: Start difference. First operand 5095 states and 24210 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:36,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:36,455 INFO L93 Difference]: Finished difference Result 11974 states and 53490 transitions. [2021-05-22 02:08:36,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:36,456 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:36,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:36,483 INFO L225 Difference]: With dead ends: 11974 [2021-05-22 02:08:36,484 INFO L226 Difference]: Without dead ends: 11432 [2021-05-22 02:08:36,484 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:36,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11432 states. [2021-05-22 02:08:36,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11432 to 5322. [2021-05-22 02:08:36,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5322 states, 5321 states have (on average 4.725615485810938) internal successors, (25145), 5321 states have internal predecessors, (25145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:36,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5322 states to 5322 states and 25145 transitions. [2021-05-22 02:08:36,741 INFO L78 Accepts]: Start accepts. Automaton has 5322 states and 25145 transitions. Word has length 29 [2021-05-22 02:08:36,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:36,741 INFO L482 AbstractCegarLoop]: Abstraction has 5322 states and 25145 transitions. [2021-05-22 02:08:36,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:36,742 INFO L276 IsEmpty]: Start isEmpty. Operand 5322 states and 25145 transitions. [2021-05-22 02:08:36,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:36,752 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:36,752 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:36,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1349 [2021-05-22 02:08:36,752 INFO L430 AbstractCegarLoop]: === Iteration 1351 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:36,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:36,752 INFO L82 PathProgramCache]: Analyzing trace with hash 2136338917, now seen corresponding path program 1346 times [2021-05-22 02:08:36,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:36,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671916621] [2021-05-22 02:08:36,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:36,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:36,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:36,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671916621] [2021-05-22 02:08:36,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671916621] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:36,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:36,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:36,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787191957] [2021-05-22 02:08:36,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:36,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:36,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:36,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:36,862 INFO L87 Difference]: Start difference. First operand 5322 states and 25145 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:36,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:36,976 INFO L93 Difference]: Finished difference Result 11909 states and 53121 transitions. [2021-05-22 02:08:36,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:36,976 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:36,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:37,004 INFO L225 Difference]: With dead ends: 11909 [2021-05-22 02:08:37,004 INFO L226 Difference]: Without dead ends: 11289 [2021-05-22 02:08:37,004 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:37,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11289 states. [2021-05-22 02:08:37,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11289 to 5179. [2021-05-22 02:08:37,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.745075318655852) internal successors, (24570), 5178 states have internal predecessors, (24570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24570 transitions. [2021-05-22 02:08:37,245 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24570 transitions. Word has length 29 [2021-05-22 02:08:37,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:37,245 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24570 transitions. [2021-05-22 02:08:37,246 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:37,246 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24570 transitions. [2021-05-22 02:08:37,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:37,254 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:37,254 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:37,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1350 [2021-05-22 02:08:37,254 INFO L430 AbstractCegarLoop]: === Iteration 1352 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:37,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:37,255 INFO L82 PathProgramCache]: Analyzing trace with hash 574374245, now seen corresponding path program 1347 times [2021-05-22 02:08:37,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:37,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686961603] [2021-05-22 02:08:37,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:37,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:37,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686961603] [2021-05-22 02:08:37,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686961603] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:37,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:37,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:37,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272135590] [2021-05-22 02:08:37,372 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:37,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:37,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:37,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:37,372 INFO L87 Difference]: Start difference. First operand 5179 states and 24570 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:37,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:37,475 INFO L93 Difference]: Finished difference Result 11849 states and 52903 transitions. [2021-05-22 02:08:37,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:37,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:37,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:37,505 INFO L225 Difference]: With dead ends: 11849 [2021-05-22 02:08:37,505 INFO L226 Difference]: Without dead ends: 11307 [2021-05-22 02:08:37,505 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:37,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11307 states. [2021-05-22 02:08:37,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11307 to 5259. [2021-05-22 02:08:37,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5259 states, 5258 states have (on average 4.7276531000380375) internal successors, (24858), 5258 states have internal predecessors, (24858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:37,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5259 states to 5259 states and 24858 transitions. [2021-05-22 02:08:37,761 INFO L78 Accepts]: Start accepts. Automaton has 5259 states and 24858 transitions. Word has length 29 [2021-05-22 02:08:37,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:37,761 INFO L482 AbstractCegarLoop]: Abstraction has 5259 states and 24858 transitions. [2021-05-22 02:08:37,761 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:37,762 INFO L276 IsEmpty]: Start isEmpty. Operand 5259 states and 24858 transitions. [2021-05-22 02:08:37,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:37,771 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:37,771 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:37,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1351 [2021-05-22 02:08:37,771 INFO L430 AbstractCegarLoop]: === Iteration 1353 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:37,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:37,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1113872027, now seen corresponding path program 1348 times [2021-05-22 02:08:37,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:37,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592824586] [2021-05-22 02:08:37,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:37,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:37,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592824586] [2021-05-22 02:08:37,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592824586] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:37,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:37,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:37,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337117310] [2021-05-22 02:08:37,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:37,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:37,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:37,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:37,889 INFO L87 Difference]: Start difference. First operand 5259 states and 24858 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:37,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:37,994 INFO L93 Difference]: Finished difference Result 11722 states and 52296 transitions. [2021-05-22 02:08:37,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:37,994 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:37,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:38,024 INFO L225 Difference]: With dead ends: 11722 [2021-05-22 02:08:38,024 INFO L226 Difference]: Without dead ends: 11227 [2021-05-22 02:08:38,024 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:38,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11227 states. [2021-05-22 02:08:38,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11227 to 5179. [2021-05-22 02:08:38,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.73735032831209) internal successors, (24530), 5178 states have internal predecessors, (24530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:38,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24530 transitions. [2021-05-22 02:08:38,280 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24530 transitions. Word has length 29 [2021-05-22 02:08:38,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:38,280 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24530 transitions. [2021-05-22 02:08:38,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:38,280 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24530 transitions. [2021-05-22 02:08:38,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:38,289 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:38,289 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:38,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1352 [2021-05-22 02:08:38,289 INFO L430 AbstractCegarLoop]: === Iteration 1354 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:38,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:38,289 INFO L82 PathProgramCache]: Analyzing trace with hash 962379207, now seen corresponding path program 1349 times [2021-05-22 02:08:38,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:38,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502781846] [2021-05-22 02:08:38,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:38,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:38,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:38,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502781846] [2021-05-22 02:08:38,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502781846] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:38,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:38,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:38,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978019702] [2021-05-22 02:08:38,407 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:38,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:38,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:38,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:38,407 INFO L87 Difference]: Start difference. First operand 5179 states and 24530 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:38,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:38,516 INFO L93 Difference]: Finished difference Result 11687 states and 52203 transitions. [2021-05-22 02:08:38,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:38,516 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:38,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:38,545 INFO L225 Difference]: With dead ends: 11687 [2021-05-22 02:08:38,545 INFO L226 Difference]: Without dead ends: 11210 [2021-05-22 02:08:38,545 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:38,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11210 states. [2021-05-22 02:08:38,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11210 to 5227. [2021-05-22 02:08:38,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5227 states, 5226 states have (on average 4.727516264829697) internal successors, (24706), 5226 states have internal predecessors, (24706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:38,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5227 states to 5227 states and 24706 transitions. [2021-05-22 02:08:38,792 INFO L78 Accepts]: Start accepts. Automaton has 5227 states and 24706 transitions. Word has length 29 [2021-05-22 02:08:38,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:38,792 INFO L482 AbstractCegarLoop]: Abstraction has 5227 states and 24706 transitions. [2021-05-22 02:08:38,792 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:38,792 INFO L276 IsEmpty]: Start isEmpty. Operand 5227 states and 24706 transitions. [2021-05-22 02:08:38,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:38,801 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:38,801 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:38,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1353 [2021-05-22 02:08:38,801 INFO L430 AbstractCegarLoop]: === Iteration 1355 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:38,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:38,801 INFO L82 PathProgramCache]: Analyzing trace with hash 115582245, now seen corresponding path program 1350 times [2021-05-22 02:08:38,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:38,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279491934] [2021-05-22 02:08:38,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:38,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:38,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279491934] [2021-05-22 02:08:38,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279491934] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:38,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:38,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:38,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963221765] [2021-05-22 02:08:38,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:38,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:38,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:38,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:38,919 INFO L87 Difference]: Start difference. First operand 5227 states and 24706 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:39,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:39,033 INFO L93 Difference]: Finished difference Result 11625 states and 51886 transitions. [2021-05-22 02:08:39,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:39,033 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:39,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:39,062 INFO L225 Difference]: With dead ends: 11625 [2021-05-22 02:08:39,062 INFO L226 Difference]: Without dead ends: 11106 [2021-05-22 02:08:39,062 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:39,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11106 states. [2021-05-22 02:08:39,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11106 to 5123. [2021-05-22 02:08:39,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5123 states, 5122 states have (on average 4.750097618117922) internal successors, (24330), 5122 states have internal predecessors, (24330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:39,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 24330 transitions. [2021-05-22 02:08:39,309 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 24330 transitions. Word has length 29 [2021-05-22 02:08:39,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:39,309 INFO L482 AbstractCegarLoop]: Abstraction has 5123 states and 24330 transitions. [2021-05-22 02:08:39,310 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:39,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 24330 transitions. [2021-05-22 02:08:39,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:39,318 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:39,318 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:39,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1354 [2021-05-22 02:08:39,318 INFO L430 AbstractCegarLoop]: === Iteration 1356 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:39,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:39,319 INFO L82 PathProgramCache]: Analyzing trace with hash 2146342147, now seen corresponding path program 1351 times [2021-05-22 02:08:39,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:39,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742189493] [2021-05-22 02:08:39,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:39,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:39,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742189493] [2021-05-22 02:08:39,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742189493] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:39,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:39,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:39,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652305163] [2021-05-22 02:08:39,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:39,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:39,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:39,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:39,432 INFO L87 Difference]: Start difference. First operand 5123 states and 24330 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:39,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:39,535 INFO L93 Difference]: Finished difference Result 11939 states and 53372 transitions. [2021-05-22 02:08:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:39,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:39,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:39,563 INFO L225 Difference]: With dead ends: 11939 [2021-05-22 02:08:39,563 INFO L226 Difference]: Without dead ends: 11397 [2021-05-22 02:08:39,563 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:39,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11397 states. [2021-05-22 02:08:39,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11397 to 5334. [2021-05-22 02:08:39,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5334 states, 5333 states have (on average 4.722482655165948) internal successors, (25185), 5333 states have internal predecessors, (25185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:39,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5334 states to 5334 states and 25185 transitions. [2021-05-22 02:08:39,814 INFO L78 Accepts]: Start accepts. Automaton has 5334 states and 25185 transitions. Word has length 29 [2021-05-22 02:08:39,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:39,814 INFO L482 AbstractCegarLoop]: Abstraction has 5334 states and 25185 transitions. [2021-05-22 02:08:39,814 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:39,814 INFO L276 IsEmpty]: Start isEmpty. Operand 5334 states and 25185 transitions. [2021-05-22 02:08:39,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:39,823 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:39,823 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:39,823 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1355 [2021-05-22 02:08:39,824 INFO L430 AbstractCegarLoop]: === Iteration 1357 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:39,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:39,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1067562523, now seen corresponding path program 1352 times [2021-05-22 02:08:39,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:39,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492513715] [2021-05-22 02:08:39,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:39,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:39,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492513715] [2021-05-22 02:08:39,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492513715] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:39,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:39,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:39,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088689107] [2021-05-22 02:08:39,935 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:39,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:39,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:39,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:39,935 INFO L87 Difference]: Start difference. First operand 5334 states and 25185 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:40,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:40,054 INFO L93 Difference]: Finished difference Result 11874 states and 53003 transitions. [2021-05-22 02:08:40,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:40,055 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:40,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:40,083 INFO L225 Difference]: With dead ends: 11874 [2021-05-22 02:08:40,083 INFO L226 Difference]: Without dead ends: 11254 [2021-05-22 02:08:40,083 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:40,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11254 states. [2021-05-22 02:08:40,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11254 to 5191. [2021-05-22 02:08:40,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.739499036608863) internal successors, (24598), 5190 states have internal predecessors, (24598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:40,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24598 transitions. [2021-05-22 02:08:40,331 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24598 transitions. Word has length 29 [2021-05-22 02:08:40,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:40,331 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24598 transitions. [2021-05-22 02:08:40,331 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:40,331 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24598 transitions. [2021-05-22 02:08:40,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:40,340 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:40,340 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:40,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1356 [2021-05-22 02:08:40,340 INFO L430 AbstractCegarLoop]: === Iteration 1358 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:40,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:40,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1833295107, now seen corresponding path program 1353 times [2021-05-22 02:08:40,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:40,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849740334] [2021-05-22 02:08:40,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:40,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:40,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849740334] [2021-05-22 02:08:40,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849740334] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:40,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:40,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:40,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699284475] [2021-05-22 02:08:40,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:40,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:40,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:40,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:40,465 INFO L87 Difference]: Start difference. First operand 5191 states and 24598 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:40,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:40,556 INFO L93 Difference]: Finished difference Result 11663 states and 52194 transitions. [2021-05-22 02:08:40,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:40,556 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:40,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:40,585 INFO L225 Difference]: With dead ends: 11663 [2021-05-22 02:08:40,585 INFO L226 Difference]: Without dead ends: 11121 [2021-05-22 02:08:40,585 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:40,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11121 states. [2021-05-22 02:08:40,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11121 to 5295. [2021-05-22 02:08:40,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5295 states, 5294 states have (on average 4.719682659614658) internal successors, (24986), 5294 states have internal predecessors, (24986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:40,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 24986 transitions. [2021-05-22 02:08:40,828 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 24986 transitions. Word has length 29 [2021-05-22 02:08:40,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:40,828 INFO L482 AbstractCegarLoop]: Abstraction has 5295 states and 24986 transitions. [2021-05-22 02:08:40,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:40,828 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 24986 transitions. [2021-05-22 02:08:40,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:40,837 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:40,837 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:40,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1357 [2021-05-22 02:08:40,837 INFO L430 AbstractCegarLoop]: === Iteration 1359 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:40,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:40,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1063523587, now seen corresponding path program 1354 times [2021-05-22 02:08:40,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:40,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335441063] [2021-05-22 02:08:40,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:40,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:40,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:40,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335441063] [2021-05-22 02:08:40,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335441063] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:40,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:40,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:40,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412654410] [2021-05-22 02:08:40,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:40,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:40,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:40,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:40,962 INFO L87 Difference]: Start difference. First operand 5295 states and 24986 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:41,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:41,074 INFO L93 Difference]: Finished difference Result 11264 states and 50602 transitions. [2021-05-22 02:08:41,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:41,074 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:41,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:41,102 INFO L225 Difference]: With dead ends: 11264 [2021-05-22 02:08:41,102 INFO L226 Difference]: Without dead ends: 10697 [2021-05-22 02:08:41,102 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:41,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10697 states. [2021-05-22 02:08:41,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10697 to 5191. [2021-05-22 02:08:41,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 5190 states have (on average 4.729479768786127) internal successors, (24546), 5190 states have internal predecessors, (24546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:41,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 24546 transitions. [2021-05-22 02:08:41,344 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 24546 transitions. Word has length 29 [2021-05-22 02:08:41,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:41,344 INFO L482 AbstractCegarLoop]: Abstraction has 5191 states and 24546 transitions. [2021-05-22 02:08:41,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:41,345 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 24546 transitions. [2021-05-22 02:08:41,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:41,353 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:41,353 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:41,353 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1358 [2021-05-22 02:08:41,353 INFO L430 AbstractCegarLoop]: === Iteration 1360 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:41,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:41,354 INFO L82 PathProgramCache]: Analyzing trace with hash -2073667227, now seen corresponding path program 1355 times [2021-05-22 02:08:41,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:41,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401757429] [2021-05-22 02:08:41,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:41,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:41,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:41,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401757429] [2021-05-22 02:08:41,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401757429] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:41,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:41,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:41,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341851828] [2021-05-22 02:08:41,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:41,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:41,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:41,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:41,475 INFO L87 Difference]: Start difference. First operand 5191 states and 24546 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:41,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:41,578 INFO L93 Difference]: Finished difference Result 11566 states and 51740 transitions. [2021-05-22 02:08:41,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:41,578 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:41,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:41,607 INFO L225 Difference]: With dead ends: 11566 [2021-05-22 02:08:41,607 INFO L226 Difference]: Without dead ends: 11089 [2021-05-22 02:08:41,607 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:41,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11089 states. [2021-05-22 02:08:41,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11089 to 5263. [2021-05-22 02:08:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 5262 states have (on average 4.717217787913341) internal successors, (24822), 5262 states have internal predecessors, (24822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:41,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 24822 transitions. [2021-05-22 02:08:41,852 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 24822 transitions. Word has length 29 [2021-05-22 02:08:41,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:41,853 INFO L482 AbstractCegarLoop]: Abstraction has 5263 states and 24822 transitions. [2021-05-22 02:08:41,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:41,853 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 24822 transitions. [2021-05-22 02:08:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:41,861 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:41,861 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:41,862 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1359 [2021-05-22 02:08:41,862 INFO L430 AbstractCegarLoop]: === Iteration 1361 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:41,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:41,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1861622339, now seen corresponding path program 1356 times [2021-05-22 02:08:41,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:41,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406412594] [2021-05-22 02:08:41,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:41,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:41,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406412594] [2021-05-22 02:08:41,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406412594] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:41,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:41,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:41,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441135235] [2021-05-22 02:08:41,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:41,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:41,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:41,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:41,984 INFO L87 Difference]: Start difference. First operand 5263 states and 24822 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:42,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:42,096 INFO L93 Difference]: Finished difference Result 11232 states and 50438 transitions. [2021-05-22 02:08:42,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:42,096 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:42,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:42,124 INFO L225 Difference]: With dead ends: 11232 [2021-05-22 02:08:42,124 INFO L226 Difference]: Without dead ends: 10629 [2021-05-22 02:08:42,124 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:42,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10629 states. [2021-05-22 02:08:42,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10629 to 5123. [2021-05-22 02:08:42,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5123 states, 5122 states have (on average 4.744631003514252) internal successors, (24302), 5122 states have internal predecessors, (24302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:42,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 24302 transitions. [2021-05-22 02:08:42,366 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 24302 transitions. Word has length 29 [2021-05-22 02:08:42,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:42,366 INFO L482 AbstractCegarLoop]: Abstraction has 5123 states and 24302 transitions. [2021-05-22 02:08:42,366 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:42,366 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 24302 transitions. [2021-05-22 02:08:42,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:42,375 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:42,375 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:42,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1360 [2021-05-22 02:08:42,375 INFO L430 AbstractCegarLoop]: === Iteration 1362 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:42,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:42,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1356955877, now seen corresponding path program 1357 times [2021-05-22 02:08:42,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:42,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940567008] [2021-05-22 02:08:42,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:42,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:42,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:42,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940567008] [2021-05-22 02:08:42,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940567008] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:42,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:42,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:42,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55924568] [2021-05-22 02:08:42,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:42,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:42,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:42,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:42,497 INFO L87 Difference]: Start difference. First operand 5123 states and 24302 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:42,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:42,600 INFO L93 Difference]: Finished difference Result 11700 states and 52288 transitions. [2021-05-22 02:08:42,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:42,601 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:42,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:42,629 INFO L225 Difference]: With dead ends: 11700 [2021-05-22 02:08:42,629 INFO L226 Difference]: Without dead ends: 11158 [2021-05-22 02:08:42,629 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:42,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11158 states. [2021-05-22 02:08:42,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11158 to 5243. [2021-05-22 02:08:42,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 5242 states have (on average 4.7298740938573065) internal successors, (24794), 5242 states have internal predecessors, (24794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:42,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 24794 transitions. [2021-05-22 02:08:42,873 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 24794 transitions. Word has length 29 [2021-05-22 02:08:42,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:42,873 INFO L482 AbstractCegarLoop]: Abstraction has 5243 states and 24794 transitions. [2021-05-22 02:08:42,873 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:42,873 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 24794 transitions. [2021-05-22 02:08:42,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:42,882 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:42,882 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:42,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1361 [2021-05-22 02:08:42,882 INFO L430 AbstractCegarLoop]: === Iteration 1363 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:42,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:42,882 INFO L82 PathProgramCache]: Analyzing trace with hash -331290395, now seen corresponding path program 1358 times [2021-05-22 02:08:42,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:42,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99362864] [2021-05-22 02:08:42,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:43,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:43,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:43,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99362864] [2021-05-22 02:08:43,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99362864] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:43,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:43,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:43,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944034451] [2021-05-22 02:08:43,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:43,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:43,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:43,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:43,004 INFO L87 Difference]: Start difference. First operand 5243 states and 24794 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:43,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:43,097 INFO L93 Difference]: Finished difference Result 11573 states and 51681 transitions. [2021-05-22 02:08:43,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:43,097 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:43,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:43,126 INFO L225 Difference]: With dead ends: 11573 [2021-05-22 02:08:43,126 INFO L226 Difference]: Without dead ends: 11078 [2021-05-22 02:08:43,126 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:43,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11078 states. [2021-05-22 02:08:43,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11078 to 5163. [2021-05-22 02:08:43,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 4.739635800077489) internal successors, (24466), 5162 states have internal predecessors, (24466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:43,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 24466 transitions. [2021-05-22 02:08:43,425 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 24466 transitions. Word has length 29 [2021-05-22 02:08:43,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:43,425 INFO L482 AbstractCegarLoop]: Abstraction has 5163 states and 24466 transitions. [2021-05-22 02:08:43,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:43,425 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 24466 transitions. [2021-05-22 02:08:43,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:43,433 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:43,433 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:43,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1362 [2021-05-22 02:08:43,433 INFO L430 AbstractCegarLoop]: === Iteration 1364 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:43,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:43,434 INFO L82 PathProgramCache]: Analyzing trace with hash -686007869, now seen corresponding path program 1359 times [2021-05-22 02:08:43,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:43,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994397203] [2021-05-22 02:08:43,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:43,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:43,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:43,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994397203] [2021-05-22 02:08:43,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994397203] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:43,559 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:43,559 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:43,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928485095] [2021-05-22 02:08:43,559 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:43,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:43,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:43,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:43,560 INFO L87 Difference]: Start difference. First operand 5163 states and 24466 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:43,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:43,652 INFO L93 Difference]: Finished difference Result 11549 states and 51669 transitions. [2021-05-22 02:08:43,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:43,652 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:43,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:43,681 INFO L225 Difference]: With dead ends: 11549 [2021-05-22 02:08:43,681 INFO L226 Difference]: Without dead ends: 11007 [2021-05-22 02:08:43,681 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:43,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11007 states. [2021-05-22 02:08:43,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11007 to 5267. [2021-05-22 02:08:43,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5267 states, 5266 states have (on average 4.719711355867831) internal successors, (24854), 5266 states have internal predecessors, (24854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:43,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5267 states to 5267 states and 24854 transitions. [2021-05-22 02:08:43,927 INFO L78 Accepts]: Start accepts. Automaton has 5267 states and 24854 transitions. Word has length 29 [2021-05-22 02:08:43,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:43,928 INFO L482 AbstractCegarLoop]: Abstraction has 5267 states and 24854 transitions. [2021-05-22 02:08:43,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:43,928 INFO L276 IsEmpty]: Start isEmpty. Operand 5267 states and 24854 transitions. [2021-05-22 02:08:43,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:43,937 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:43,937 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:43,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1363 [2021-05-22 02:08:43,937 INFO L430 AbstractCegarLoop]: === Iteration 1365 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:43,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:43,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1521841947, now seen corresponding path program 1360 times [2021-05-22 02:08:43,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:43,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474618551] [2021-05-22 02:08:43,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:44,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:44,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:44,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474618551] [2021-05-22 02:08:44,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474618551] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:44,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:44,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:44,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246168184] [2021-05-22 02:08:44,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:44,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:44,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:44,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:44,061 INFO L87 Difference]: Start difference. First operand 5267 states and 24854 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:44,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:44,168 INFO L93 Difference]: Finished difference Result 11150 states and 50077 transitions. [2021-05-22 02:08:44,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:44,168 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:44,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:44,195 INFO L225 Difference]: With dead ends: 11150 [2021-05-22 02:08:44,196 INFO L226 Difference]: Without dead ends: 10583 [2021-05-22 02:08:44,196 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:44,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10583 states. [2021-05-22 02:08:44,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10583 to 5163. [2021-05-22 02:08:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5163 states, 5162 states have (on average 4.731886865555986) internal successors, (24426), 5162 states have internal predecessors, (24426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:44,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5163 states to 5163 states and 24426 transitions. [2021-05-22 02:08:44,440 INFO L78 Accepts]: Start accepts. Automaton has 5163 states and 24426 transitions. Word has length 29 [2021-05-22 02:08:44,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:44,440 INFO L482 AbstractCegarLoop]: Abstraction has 5163 states and 24426 transitions. [2021-05-22 02:08:44,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:44,440 INFO L276 IsEmpty]: Start isEmpty. Operand 5163 states and 24426 transitions. [2021-05-22 02:08:44,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:44,450 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:44,450 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:44,450 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1364 [2021-05-22 02:08:44,450 INFO L430 AbstractCegarLoop]: === Iteration 1366 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:44,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:44,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1347346203, now seen corresponding path program 1361 times [2021-05-22 02:08:44,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:44,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757463834] [2021-05-22 02:08:44,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:44,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:44,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757463834] [2021-05-22 02:08:44,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757463834] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:44,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:44,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:44,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554734695] [2021-05-22 02:08:44,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:44,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:44,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:44,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:44,566 INFO L87 Difference]: Start difference. First operand 5163 states and 24426 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:44,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:44,658 INFO L93 Difference]: Finished difference Result 11366 states and 50834 transitions. [2021-05-22 02:08:44,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:44,658 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:44,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:44,686 INFO L225 Difference]: With dead ends: 11366 [2021-05-22 02:08:44,686 INFO L226 Difference]: Without dead ends: 10951 [2021-05-22 02:08:44,686 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:44,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10951 states. [2021-05-22 02:08:44,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10951 to 5211. [2021-05-22 02:08:44,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5211 states, 5210 states have (on average 4.722072936660268) internal successors, (24602), 5210 states have internal predecessors, (24602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:44,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5211 states to 5211 states and 24602 transitions. [2021-05-22 02:08:44,926 INFO L78 Accepts]: Start accepts. Automaton has 5211 states and 24602 transitions. Word has length 29 [2021-05-22 02:08:44,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:44,926 INFO L482 AbstractCegarLoop]: Abstraction has 5211 states and 24602 transitions. [2021-05-22 02:08:44,926 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:44,926 INFO L276 IsEmpty]: Start isEmpty. Operand 5211 states and 24602 transitions. [2021-05-22 02:08:44,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:44,935 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:44,935 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:44,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1365 [2021-05-22 02:08:44,935 INFO L430 AbstractCegarLoop]: === Iteration 1367 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:44,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:44,936 INFO L82 PathProgramCache]: Analyzing trace with hash -437741245, now seen corresponding path program 1362 times [2021-05-22 02:08:44,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:44,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435339170] [2021-05-22 02:08:44,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:45,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:45,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:45,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435339170] [2021-05-22 02:08:45,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435339170] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:45,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:45,046 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:45,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568782900] [2021-05-22 02:08:45,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:45,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:45,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:45,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:45,046 INFO L87 Difference]: Start difference. First operand 5211 states and 24602 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:45,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:45,165 INFO L93 Difference]: Finished difference Result 11094 states and 49825 transitions. [2021-05-22 02:08:45,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:45,165 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:45,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:45,192 INFO L225 Difference]: With dead ends: 11094 [2021-05-22 02:08:45,192 INFO L226 Difference]: Without dead ends: 10543 [2021-05-22 02:08:45,192 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:45,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10543 states. [2021-05-22 02:08:45,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10543 to 5123. [2021-05-22 02:08:45,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5123 states, 5122 states have (on average 4.740726278797345) internal successors, (24282), 5122 states have internal predecessors, (24282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:45,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 24282 transitions. [2021-05-22 02:08:45,431 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 24282 transitions. Word has length 29 [2021-05-22 02:08:45,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:45,431 INFO L482 AbstractCegarLoop]: Abstraction has 5123 states and 24282 transitions. [2021-05-22 02:08:45,431 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:45,431 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 24282 transitions. [2021-05-22 02:08:45,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:45,440 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:45,440 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:45,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1366 [2021-05-22 02:08:45,440 INFO L430 AbstractCegarLoop]: === Iteration 1368 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:45,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:45,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1436476615, now seen corresponding path program 1363 times [2021-05-22 02:08:45,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:45,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433529502] [2021-05-22 02:08:45,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:45,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:45,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:45,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433529502] [2021-05-22 02:08:45,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433529502] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:45,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:45,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:45,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545451242] [2021-05-22 02:08:45,556 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:45,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:45,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:45,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:45,556 INFO L87 Difference]: Start difference. First operand 5123 states and 24282 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:45,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:45,670 INFO L93 Difference]: Finished difference Result 11425 states and 51126 transitions. [2021-05-22 02:08:45,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:45,670 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:45,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:45,698 INFO L225 Difference]: With dead ends: 11425 [2021-05-22 02:08:45,699 INFO L226 Difference]: Without dead ends: 10948 [2021-05-22 02:08:45,699 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:45,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10948 states. [2021-05-22 02:08:45,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10948 to 5195. [2021-05-22 02:08:45,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.732768579129765) internal successors, (24582), 5194 states have internal predecessors, (24582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24582 transitions. [2021-05-22 02:08:45,932 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24582 transitions. Word has length 29 [2021-05-22 02:08:45,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:45,932 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24582 transitions. [2021-05-22 02:08:45,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:45,932 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24582 transitions. [2021-05-22 02:08:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:45,941 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:45,941 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:45,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1367 [2021-05-22 02:08:45,941 INFO L430 AbstractCegarLoop]: === Iteration 1369 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:45,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:45,941 INFO L82 PathProgramCache]: Analyzing trace with hash 589679653, now seen corresponding path program 1364 times [2021-05-22 02:08:45,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:45,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116799277] [2021-05-22 02:08:45,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:46,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:46,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:46,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116799277] [2021-05-22 02:08:46,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116799277] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:46,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:46,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:46,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614392621] [2021-05-22 02:08:46,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:46,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:46,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:46,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:46,060 INFO L87 Difference]: Start difference. First operand 5195 states and 24582 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:46,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:46,154 INFO L93 Difference]: Finished difference Result 11363 states and 50809 transitions. [2021-05-22 02:08:46,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:46,154 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:46,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:46,182 INFO L225 Difference]: With dead ends: 11363 [2021-05-22 02:08:46,182 INFO L226 Difference]: Without dead ends: 10900 [2021-05-22 02:08:46,182 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:46,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10900 states. [2021-05-22 02:08:46,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10900 to 5147. [2021-05-22 02:08:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5147 states, 5146 states have (on average 4.7380489700738435) internal successors, (24382), 5146 states have internal predecessors, (24382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:46,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5147 states to 5147 states and 24382 transitions. [2021-05-22 02:08:46,419 INFO L78 Accepts]: Start accepts. Automaton has 5147 states and 24382 transitions. Word has length 29 [2021-05-22 02:08:46,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:46,420 INFO L482 AbstractCegarLoop]: Abstraction has 5147 states and 24382 transitions. [2021-05-22 02:08:46,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:46,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5147 states and 24382 transitions. [2021-05-22 02:08:46,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:46,428 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:46,428 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:46,428 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1368 [2021-05-22 02:08:46,428 INFO L430 AbstractCegarLoop]: === Iteration 1370 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:46,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:46,428 INFO L82 PathProgramCache]: Analyzing trace with hash -606487131, now seen corresponding path program 1365 times [2021-05-22 02:08:46,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:46,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631588396] [2021-05-22 02:08:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:46,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:46,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:46,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631588396] [2021-05-22 02:08:46,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631588396] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:46,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:46,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:46,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755445310] [2021-05-22 02:08:46,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:46,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:46,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:46,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:46,550 INFO L87 Difference]: Start difference. First operand 5147 states and 24382 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:46,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:46,655 INFO L93 Difference]: Finished difference Result 11339 states and 50781 transitions. [2021-05-22 02:08:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:46,656 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:46,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:46,683 INFO L225 Difference]: With dead ends: 11339 [2021-05-22 02:08:46,683 INFO L226 Difference]: Without dead ends: 10862 [2021-05-22 02:08:46,683 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:46,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10862 states. [2021-05-22 02:08:46,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10862 to 5219. [2021-05-22 02:08:46,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5219 states, 5218 states have (on average 4.725565350709084) internal successors, (24658), 5218 states have internal predecessors, (24658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:46,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 24658 transitions. [2021-05-22 02:08:46,920 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 24658 transitions. Word has length 29 [2021-05-22 02:08:46,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:46,920 INFO L482 AbstractCegarLoop]: Abstraction has 5219 states and 24658 transitions. [2021-05-22 02:08:46,920 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:46,920 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 24658 transitions. [2021-05-22 02:08:46,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:46,929 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:46,929 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:46,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1369 [2021-05-22 02:08:46,929 INFO L430 AbstractCegarLoop]: === Iteration 1371 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:46,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:46,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1032227419, now seen corresponding path program 1366 times [2021-05-22 02:08:46,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:46,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894274727] [2021-05-22 02:08:46,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:47,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:47,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894274727] [2021-05-22 02:08:47,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894274727] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:47,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:47,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:47,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638591599] [2021-05-22 02:08:47,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:47,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:47,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:47,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:47,049 INFO L87 Difference]: Start difference. First operand 5219 states and 24658 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:47,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:47,153 INFO L93 Difference]: Finished difference Result 11005 states and 49479 transitions. [2021-05-22 02:08:47,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:47,153 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:47,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:47,180 INFO L225 Difference]: With dead ends: 11005 [2021-05-22 02:08:47,180 INFO L226 Difference]: Without dead ends: 10470 [2021-05-22 02:08:47,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:47,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10470 states. [2021-05-22 02:08:47,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10470 to 5147. [2021-05-22 02:08:47,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5147 states, 5146 states have (on average 4.733385153517295) internal successors, (24358), 5146 states have internal predecessors, (24358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:47,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5147 states to 5147 states and 24358 transitions. [2021-05-22 02:08:47,420 INFO L78 Accepts]: Start accepts. Automaton has 5147 states and 24358 transitions. Word has length 29 [2021-05-22 02:08:47,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:47,420 INFO L482 AbstractCegarLoop]: Abstraction has 5147 states and 24358 transitions. [2021-05-22 02:08:47,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:47,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5147 states and 24358 transitions. [2021-05-22 02:08:47,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:47,429 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:47,429 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:47,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1370 [2021-05-22 02:08:47,429 INFO L430 AbstractCegarLoop]: === Iteration 1372 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:47,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:47,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1463235197, now seen corresponding path program 1367 times [2021-05-22 02:08:47,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:47,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112867815] [2021-05-22 02:08:47,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:47,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:47,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:47,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112867815] [2021-05-22 02:08:47,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112867815] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:47,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:47,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:47,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735936120] [2021-05-22 02:08:47,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:47,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:47,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:47,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:47,541 INFO L87 Difference]: Start difference. First operand 5147 states and 24358 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:47,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:47,634 INFO L93 Difference]: Finished difference Result 11253 states and 50364 transitions. [2021-05-22 02:08:47,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:47,634 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:47,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:47,662 INFO L225 Difference]: With dead ends: 11253 [2021-05-22 02:08:47,662 INFO L226 Difference]: Without dead ends: 10838 [2021-05-22 02:08:47,662 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:47,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10838 states. [2021-05-22 02:08:47,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10838 to 5195. [2021-05-22 02:08:47,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.72352714670774) internal successors, (24534), 5194 states have internal predecessors, (24534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24534 transitions. [2021-05-22 02:08:47,907 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24534 transitions. Word has length 29 [2021-05-22 02:08:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:47,907 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24534 transitions. [2021-05-22 02:08:47,907 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:47,907 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24534 transitions. [2021-05-22 02:08:47,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:47,916 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:47,916 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:47,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1371 [2021-05-22 02:08:47,916 INFO L430 AbstractCegarLoop]: === Iteration 1373 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:47,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:47,917 INFO L82 PathProgramCache]: Analyzing trace with hash 964714725, now seen corresponding path program 1368 times [2021-05-22 02:08:47,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:47,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693848781] [2021-05-22 02:08:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:48,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:48,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693848781] [2021-05-22 02:08:48,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693848781] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:48,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:48,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:48,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008282249] [2021-05-22 02:08:48,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:48,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:48,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:48,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:48,028 INFO L87 Difference]: Start difference. First operand 5195 states and 24534 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:48,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:48,150 INFO L93 Difference]: Finished difference Result 10981 states and 49355 transitions. [2021-05-22 02:08:48,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:48,150 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:48,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:48,179 INFO L225 Difference]: With dead ends: 10981 [2021-05-22 02:08:48,179 INFO L226 Difference]: Without dead ends: 10418 [2021-05-22 02:08:48,179 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:48,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10418 states. [2021-05-22 02:08:48,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10418 to 5095. [2021-05-22 02:08:48,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5095 states, 5094 states have (on average 4.749901845308206) internal successors, (24196), 5094 states have internal predecessors, (24196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:48,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 24196 transitions. [2021-05-22 02:08:48,416 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 24196 transitions. Word has length 29 [2021-05-22 02:08:48,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:48,416 INFO L482 AbstractCegarLoop]: Abstraction has 5095 states and 24196 transitions. [2021-05-22 02:08:48,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:48,416 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 24196 transitions. [2021-05-22 02:08:48,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:48,425 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:48,425 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:48,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1372 [2021-05-22 02:08:48,425 INFO L430 AbstractCegarLoop]: === Iteration 1374 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:48,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:48,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1630685083, now seen corresponding path program 1369 times [2021-05-22 02:08:48,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:48,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634987173] [2021-05-22 02:08:48,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:48,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:48,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:48,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634987173] [2021-05-22 02:08:48,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634987173] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:48,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:48,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:48,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2708728] [2021-05-22 02:08:48,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:48,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:48,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:48,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:48,525 INFO L87 Difference]: Start difference. First operand 5095 states and 24196 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:48,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:48,622 INFO L93 Difference]: Finished difference Result 12307 states and 55046 transitions. [2021-05-22 02:08:48,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:48,623 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:48,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:48,653 INFO L225 Difference]: With dead ends: 12307 [2021-05-22 02:08:48,653 INFO L226 Difference]: Without dead ends: 11765 [2021-05-22 02:08:48,653 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 105.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:48,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11765 states. [2021-05-22 02:08:48,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11765 to 5367. [2021-05-22 02:08:48,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5367 states, 5366 states have (on average 4.719530376444279) internal successors, (25325), 5366 states have internal predecessors, (25325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5367 states to 5367 states and 25325 transitions. [2021-05-22 02:08:48,898 INFO L78 Accepts]: Start accepts. Automaton has 5367 states and 25325 transitions. Word has length 29 [2021-05-22 02:08:48,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:48,898 INFO L482 AbstractCegarLoop]: Abstraction has 5367 states and 25325 transitions. [2021-05-22 02:08:48,898 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:48,898 INFO L276 IsEmpty]: Start isEmpty. Operand 5367 states and 25325 transitions. [2021-05-22 02:08:48,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:48,907 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:48,907 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:48,907 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1373 [2021-05-22 02:08:48,907 INFO L430 AbstractCegarLoop]: === Iteration 1375 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:48,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:48,907 INFO L82 PathProgramCache]: Analyzing trace with hash -549622457, now seen corresponding path program 1370 times [2021-05-22 02:08:48,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:48,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440140087] [2021-05-22 02:08:48,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:49,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:49,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440140087] [2021-05-22 02:08:49,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440140087] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:49,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:49,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:49,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518153485] [2021-05-22 02:08:49,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:49,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:49,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:49,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:49,007 INFO L87 Difference]: Start difference. First operand 5367 states and 25325 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:49,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:49,120 INFO L93 Difference]: Finished difference Result 12242 states and 54677 transitions. [2021-05-22 02:08:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:49,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:49,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:49,150 INFO L225 Difference]: With dead ends: 12242 [2021-05-22 02:08:49,150 INFO L226 Difference]: Without dead ends: 11622 [2021-05-22 02:08:49,150 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:49,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11622 states. [2021-05-22 02:08:49,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11622 to 5224. [2021-05-22 02:08:49,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5224 states, 5223 states have (on average 4.735784032165422) internal successors, (24735), 5223 states have internal predecessors, (24735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:49,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5224 states to 5224 states and 24735 transitions. [2021-05-22 02:08:49,399 INFO L78 Accepts]: Start accepts. Automaton has 5224 states and 24735 transitions. Word has length 29 [2021-05-22 02:08:49,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:49,399 INFO L482 AbstractCegarLoop]: Abstraction has 5224 states and 24735 transitions. [2021-05-22 02:08:49,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:49,399 INFO L276 IsEmpty]: Start isEmpty. Operand 5224 states and 24735 transitions. [2021-05-22 02:08:49,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:49,408 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:49,408 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:49,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1374 [2021-05-22 02:08:49,408 INFO L430 AbstractCegarLoop]: === Iteration 1376 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:49,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:49,408 INFO L82 PathProgramCache]: Analyzing trace with hash -537714587, now seen corresponding path program 1371 times [2021-05-22 02:08:49,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:49,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200430524] [2021-05-22 02:08:49,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:49,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:49,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200430524] [2021-05-22 02:08:49,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200430524] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:49,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:49,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:49,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679743744] [2021-05-22 02:08:49,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:49,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:49,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:49,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:49,512 INFO L87 Difference]: Start difference. First operand 5224 states and 24735 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:49,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:49,618 INFO L93 Difference]: Finished difference Result 12272 states and 54855 transitions. [2021-05-22 02:08:49,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:49,618 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:49,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:49,649 INFO L225 Difference]: With dead ends: 12272 [2021-05-22 02:08:49,649 INFO L226 Difference]: Without dead ends: 11730 [2021-05-22 02:08:49,649 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 106.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:49,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11730 states. [2021-05-22 02:08:49,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11730 to 5334. [2021-05-22 02:08:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5334 states, 5333 states have (on average 4.714044627789237) internal successors, (25140), 5333 states have internal predecessors, (25140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5334 states to 5334 states and 25140 transitions. [2021-05-22 02:08:49,894 INFO L78 Accepts]: Start accepts. Automaton has 5334 states and 25140 transitions. Word has length 29 [2021-05-22 02:08:49,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:49,894 INFO L482 AbstractCegarLoop]: Abstraction has 5334 states and 25140 transitions. [2021-05-22 02:08:49,894 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:49,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5334 states and 25140 transitions. [2021-05-22 02:08:49,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:49,903 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:49,903 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:49,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1375 [2021-05-22 02:08:49,903 INFO L430 AbstractCegarLoop]: === Iteration 1377 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:49,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:49,903 INFO L82 PathProgramCache]: Analyzing trace with hash -488146843, now seen corresponding path program 1372 times [2021-05-22 02:08:49,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:49,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827279599] [2021-05-22 02:08:49,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:50,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:50,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:50,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827279599] [2021-05-22 02:08:50,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827279599] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:50,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:50,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:50,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284888004] [2021-05-22 02:08:50,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:50,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:50,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:50,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:50,002 INFO L87 Difference]: Start difference. First operand 5334 states and 25140 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:50,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:50,131 INFO L93 Difference]: Finished difference Result 12205 states and 54482 transitions. [2021-05-22 02:08:50,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:50,131 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:50,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:50,161 INFO L225 Difference]: With dead ends: 12205 [2021-05-22 02:08:50,162 INFO L226 Difference]: Without dead ends: 11620 [2021-05-22 02:08:50,162 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:50,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11620 states. [2021-05-22 02:08:50,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11620 to 5224. [2021-05-22 02:08:50,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5224 states, 5223 states have (on average 4.725253685621291) internal successors, (24680), 5223 states have internal predecessors, (24680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:50,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5224 states to 5224 states and 24680 transitions. [2021-05-22 02:08:50,404 INFO L78 Accepts]: Start accepts. Automaton has 5224 states and 24680 transitions. Word has length 29 [2021-05-22 02:08:50,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:50,405 INFO L482 AbstractCegarLoop]: Abstraction has 5224 states and 24680 transitions. [2021-05-22 02:08:50,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:50,405 INFO L276 IsEmpty]: Start isEmpty. Operand 5224 states and 24680 transitions. [2021-05-22 02:08:50,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:50,413 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:50,413 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:50,413 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1376 [2021-05-22 02:08:50,414 INFO L430 AbstractCegarLoop]: === Iteration 1378 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:50,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:50,414 INFO L82 PathProgramCache]: Analyzing trace with hash -149709625, now seen corresponding path program 1373 times [2021-05-22 02:08:50,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:50,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255808294] [2021-05-22 02:08:50,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:50,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:50,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:50,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255808294] [2021-05-22 02:08:50,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255808294] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:50,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:50,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:50,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794419576] [2021-05-22 02:08:50,514 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:50,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:50,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:50,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:50,514 INFO L87 Difference]: Start difference. First operand 5224 states and 24680 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:50,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:50,629 INFO L93 Difference]: Finished difference Result 12110 states and 54140 transitions. [2021-05-22 02:08:50,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:50,629 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:50,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:50,659 INFO L225 Difference]: With dead ends: 12110 [2021-05-22 02:08:50,659 INFO L226 Difference]: Without dead ends: 11633 [2021-05-22 02:08:50,659 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:50,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11633 states. [2021-05-22 02:08:50,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11633 to 5302. [2021-05-22 02:08:50,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5302 states, 5301 states have (on average 4.710997924919827) internal successors, (24973), 5301 states have internal predecessors, (24973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:50,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5302 states to 5302 states and 24973 transitions. [2021-05-22 02:08:50,903 INFO L78 Accepts]: Start accepts. Automaton has 5302 states and 24973 transitions. Word has length 29 [2021-05-22 02:08:50,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:50,903 INFO L482 AbstractCegarLoop]: Abstraction has 5302 states and 24973 transitions. [2021-05-22 02:08:50,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:50,903 INFO L276 IsEmpty]: Start isEmpty. Operand 5302 states and 24973 transitions. [2021-05-22 02:08:50,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:50,912 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:50,912 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:50,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1377 [2021-05-22 02:08:50,912 INFO L430 AbstractCegarLoop]: === Iteration 1379 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:50,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:50,912 INFO L82 PathProgramCache]: Analyzing trace with hash 2029178021, now seen corresponding path program 1374 times [2021-05-22 02:08:50,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:50,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470510917] [2021-05-22 02:08:50,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:51,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:51,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:51,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470510917] [2021-05-22 02:08:51,011 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470510917] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:51,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:51,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:51,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658266652] [2021-05-22 02:08:51,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:51,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:51,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:51,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:51,011 INFO L87 Difference]: Start difference. First operand 5302 states and 24973 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:51,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:51,130 INFO L93 Difference]: Finished difference Result 12108 states and 54057 transitions. [2021-05-22 02:08:51,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:51,130 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:51,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:51,160 INFO L225 Difference]: With dead ends: 12108 [2021-05-22 02:08:51,160 INFO L226 Difference]: Without dead ends: 11468 [2021-05-22 02:08:51,160 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:51,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11468 states. [2021-05-22 02:08:51,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11468 to 5137. [2021-05-22 02:08:51,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.744353582554517) internal successors, (24367), 5136 states have internal predecessors, (24367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:51,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24367 transitions. [2021-05-22 02:08:51,399 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24367 transitions. Word has length 29 [2021-05-22 02:08:51,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:51,399 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24367 transitions. [2021-05-22 02:08:51,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:51,399 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24367 transitions. [2021-05-22 02:08:51,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:51,408 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:51,408 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:51,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1378 [2021-05-22 02:08:51,408 INFO L430 AbstractCegarLoop]: === Iteration 1380 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:51,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:51,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1145714365, now seen corresponding path program 1375 times [2021-05-22 02:08:51,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:51,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554793126] [2021-05-22 02:08:51,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:51,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:51,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:51,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554793126] [2021-05-22 02:08:51,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554793126] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:51,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:51,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:51,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901785132] [2021-05-22 02:08:51,516 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:51,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:51,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:51,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:51,516 INFO L87 Difference]: Start difference. First operand 5137 states and 24367 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:51,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:51,624 INFO L93 Difference]: Finished difference Result 12121 states and 54227 transitions. [2021-05-22 02:08:51,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:51,625 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:51,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:51,654 INFO L225 Difference]: With dead ends: 12121 [2021-05-22 02:08:51,654 INFO L226 Difference]: Without dead ends: 11579 [2021-05-22 02:08:51,654 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:51,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11579 states. [2021-05-22 02:08:51,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11579 to 5348. [2021-05-22 02:08:51,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5348 states, 5347 states have (on average 4.717037591172621) internal successors, (25222), 5347 states have internal predecessors, (25222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:51,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5348 states to 5348 states and 25222 transitions. [2021-05-22 02:08:51,898 INFO L78 Accepts]: Start accepts. Automaton has 5348 states and 25222 transitions. Word has length 29 [2021-05-22 02:08:51,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:51,899 INFO L482 AbstractCegarLoop]: Abstraction has 5348 states and 25222 transitions. [2021-05-22 02:08:51,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:51,899 INFO L276 IsEmpty]: Start isEmpty. Operand 5348 states and 25222 transitions. [2021-05-22 02:08:51,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:51,907 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:51,907 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:51,907 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1379 [2021-05-22 02:08:51,907 INFO L430 AbstractCegarLoop]: === Iteration 1381 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:51,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:51,908 INFO L82 PathProgramCache]: Analyzing trace with hash -64651739, now seen corresponding path program 1376 times [2021-05-22 02:08:51,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:51,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412345040] [2021-05-22 02:08:51,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:52,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:52,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412345040] [2021-05-22 02:08:52,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412345040] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:52,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:52,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:52,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471121512] [2021-05-22 02:08:52,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:52,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:52,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:52,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:52,015 INFO L87 Difference]: Start difference. First operand 5348 states and 25222 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:52,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:52,120 INFO L93 Difference]: Finished difference Result 12056 states and 53858 transitions. [2021-05-22 02:08:52,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:52,121 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:52,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:52,149 INFO L225 Difference]: With dead ends: 12056 [2021-05-22 02:08:52,149 INFO L226 Difference]: Without dead ends: 11436 [2021-05-22 02:08:52,149 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:52,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11436 states. [2021-05-22 02:08:52,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11436 to 5205. [2021-05-22 02:08:52,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5205 states, 5204 states have (on average 4.733858570330515) internal successors, (24635), 5204 states have internal predecessors, (24635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:52,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5205 states to 5205 states and 24635 transitions. [2021-05-22 02:08:52,390 INFO L78 Accepts]: Start accepts. Automaton has 5205 states and 24635 transitions. Word has length 29 [2021-05-22 02:08:52,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:52,390 INFO L482 AbstractCegarLoop]: Abstraction has 5205 states and 24635 transitions. [2021-05-22 02:08:52,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:52,390 INFO L276 IsEmpty]: Start isEmpty. Operand 5205 states and 24635 transitions. [2021-05-22 02:08:52,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:52,398 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:52,398 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:52,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1380 [2021-05-22 02:08:52,399 INFO L430 AbstractCegarLoop]: === Iteration 1382 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:52,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:52,399 INFO L82 PathProgramCache]: Analyzing trace with hash -211885979, now seen corresponding path program 1377 times [2021-05-22 02:08:52,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:52,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761916986] [2021-05-22 02:08:52,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:52,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:52,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:52,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761916986] [2021-05-22 02:08:52,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761916986] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:52,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:52,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:52,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643508323] [2021-05-22 02:08:52,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:52,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:52,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:52,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:52,519 INFO L87 Difference]: Start difference. First operand 5205 states and 24635 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:52,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:52,613 INFO L93 Difference]: Finished difference Result 11845 states and 53049 transitions. [2021-05-22 02:08:52,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:52,614 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:52,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:52,641 INFO L225 Difference]: With dead ends: 11845 [2021-05-22 02:08:52,641 INFO L226 Difference]: Without dead ends: 11303 [2021-05-22 02:08:52,642 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:52,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11303 states. [2021-05-22 02:08:52,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11303 to 5309. [2021-05-22 02:08:52,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5309 states, 5308 states have (on average 4.714204973624717) internal successors, (25023), 5308 states have internal predecessors, (25023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:52,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5309 states to 5309 states and 25023 transitions. [2021-05-22 02:08:52,892 INFO L78 Accepts]: Start accepts. Automaton has 5309 states and 25023 transitions. Word has length 29 [2021-05-22 02:08:52,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:52,892 INFO L482 AbstractCegarLoop]: Abstraction has 5309 states and 25023 transitions. [2021-05-22 02:08:52,892 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:52,892 INFO L276 IsEmpty]: Start isEmpty. Operand 5309 states and 25023 transitions. [2021-05-22 02:08:52,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:52,901 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:52,901 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:52,901 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1381 [2021-05-22 02:08:52,901 INFO L430 AbstractCegarLoop]: === Iteration 1383 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:52,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:52,901 INFO L82 PathProgramCache]: Analyzing trace with hash -981657499, now seen corresponding path program 1378 times [2021-05-22 02:08:52,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:52,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073714801] [2021-05-22 02:08:52,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:53,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:53,020 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:53,020 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073714801] [2021-05-22 02:08:53,020 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073714801] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:53,020 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:53,020 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:53,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878228674] [2021-05-22 02:08:53,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:53,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:53,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:53,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:53,020 INFO L87 Difference]: Start difference. First operand 5309 states and 25023 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:53,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:53,130 INFO L93 Difference]: Finished difference Result 11446 states and 51457 transitions. [2021-05-22 02:08:53,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:53,130 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:53,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:53,160 INFO L225 Difference]: With dead ends: 11446 [2021-05-22 02:08:53,160 INFO L226 Difference]: Without dead ends: 10879 [2021-05-22 02:08:53,160 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:53,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10879 states. [2021-05-22 02:08:53,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10879 to 5205. [2021-05-22 02:08:53,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5205 states, 5204 states have (on average 4.723866256725596) internal successors, (24583), 5204 states have internal predecessors, (24583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:53,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5205 states to 5205 states and 24583 transitions. [2021-05-22 02:08:53,398 INFO L78 Accepts]: Start accepts. Automaton has 5205 states and 24583 transitions. Word has length 29 [2021-05-22 02:08:53,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:53,398 INFO L482 AbstractCegarLoop]: Abstraction has 5205 states and 24583 transitions. [2021-05-22 02:08:53,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:53,398 INFO L276 IsEmpty]: Start isEmpty. Operand 5205 states and 24583 transitions. [2021-05-22 02:08:53,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:53,406 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:53,406 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:53,406 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1382 [2021-05-22 02:08:53,406 INFO L430 AbstractCegarLoop]: === Iteration 1384 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:53,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:53,407 INFO L82 PathProgramCache]: Analyzing trace with hash 176118983, now seen corresponding path program 1379 times [2021-05-22 02:08:53,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:53,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66329290] [2021-05-22 02:08:53,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:53,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:53,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:53,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66329290] [2021-05-22 02:08:53,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66329290] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:53,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:53,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:53,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311145803] [2021-05-22 02:08:53,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:53,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:53,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:53,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:53,573 INFO L87 Difference]: Start difference. First operand 5205 states and 24583 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:53,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:53,678 INFO L93 Difference]: Finished difference Result 11748 states and 52595 transitions. [2021-05-22 02:08:53,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:53,678 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:53,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:53,706 INFO L225 Difference]: With dead ends: 11748 [2021-05-22 02:08:53,706 INFO L226 Difference]: Without dead ends: 11271 [2021-05-22 02:08:53,706 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 188.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:53,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11271 states. [2021-05-22 02:08:53,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11271 to 5277. [2021-05-22 02:08:53,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5277 states, 5276 states have (on average 4.711713419257013) internal successors, (24859), 5276 states have internal predecessors, (24859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:53,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 24859 transitions. [2021-05-22 02:08:53,943 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 24859 transitions. Word has length 29 [2021-05-22 02:08:53,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:53,943 INFO L482 AbstractCegarLoop]: Abstraction has 5277 states and 24859 transitions. [2021-05-22 02:08:53,943 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:53,943 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 24859 transitions. [2021-05-22 02:08:53,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:53,952 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:53,952 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:53,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1383 [2021-05-22 02:08:53,952 INFO L430 AbstractCegarLoop]: === Iteration 1385 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:53,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:53,952 INFO L82 PathProgramCache]: Analyzing trace with hash -183558747, now seen corresponding path program 1380 times [2021-05-22 02:08:53,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:53,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411015093] [2021-05-22 02:08:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:54,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:54,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411015093] [2021-05-22 02:08:54,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411015093] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:54,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:54,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:54,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099630508] [2021-05-22 02:08:54,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:54,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:54,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:54,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:54,066 INFO L87 Difference]: Start difference. First operand 5277 states and 24859 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:54,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:54,179 INFO L93 Difference]: Finished difference Result 11414 states and 51293 transitions. [2021-05-22 02:08:54,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:54,179 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:54,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:54,207 INFO L225 Difference]: With dead ends: 11414 [2021-05-22 02:08:54,207 INFO L226 Difference]: Without dead ends: 10811 [2021-05-22 02:08:54,208 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:54,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10811 states. [2021-05-22 02:08:54,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10811 to 5137. [2021-05-22 02:08:54,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.737733644859813) internal successors, (24333), 5136 states have internal predecessors, (24333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:54,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24333 transitions. [2021-05-22 02:08:54,443 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24333 transitions. Word has length 29 [2021-05-22 02:08:54,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:54,443 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24333 transitions. [2021-05-22 02:08:54,443 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:54,444 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24333 transitions. [2021-05-22 02:08:54,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:54,452 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:54,452 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:54,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1384 [2021-05-22 02:08:54,452 INFO L430 AbstractCegarLoop]: === Iteration 1386 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:54,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:54,453 INFO L82 PathProgramCache]: Analyzing trace with hash -728209307, now seen corresponding path program 1381 times [2021-05-22 02:08:54,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:54,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584069282] [2021-05-22 02:08:54,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:54,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:54,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:54,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584069282] [2021-05-22 02:08:54,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584069282] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:54,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:54,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:54,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773006097] [2021-05-22 02:08:54,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:54,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:54,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:54,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:54,550 INFO L87 Difference]: Start difference. First operand 5137 states and 24333 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:54,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:54,647 INFO L93 Difference]: Finished difference Result 12068 states and 54004 transitions. [2021-05-22 02:08:54,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:54,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:54,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:54,677 INFO L225 Difference]: With dead ends: 12068 [2021-05-22 02:08:54,677 INFO L226 Difference]: Without dead ends: 11526 [2021-05-22 02:08:54,677 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 103.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:54,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11526 states. [2021-05-22 02:08:54,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11526 to 5299. [2021-05-22 02:08:54,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5299 states, 5298 states have (on average 4.720649301623254) internal successors, (25010), 5298 states have internal predecessors, (25010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:54,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5299 states to 5299 states and 25010 transitions. [2021-05-22 02:08:54,927 INFO L78 Accepts]: Start accepts. Automaton has 5299 states and 25010 transitions. Word has length 29 [2021-05-22 02:08:54,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:54,927 INFO L482 AbstractCegarLoop]: Abstraction has 5299 states and 25010 transitions. [2021-05-22 02:08:54,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:54,927 INFO L276 IsEmpty]: Start isEmpty. Operand 5299 states and 25010 transitions. [2021-05-22 02:08:54,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:54,936 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:54,936 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:54,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1385 [2021-05-22 02:08:54,936 INFO L430 AbstractCegarLoop]: === Iteration 1387 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:54,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:54,936 INFO L82 PathProgramCache]: Analyzing trace with hash -678641563, now seen corresponding path program 1382 times [2021-05-22 02:08:54,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:54,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012899639] [2021-05-22 02:08:54,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:55,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:55,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012899639] [2021-05-22 02:08:55,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012899639] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:55,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:55,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:55,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699448007] [2021-05-22 02:08:55,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:55,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:55,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:55,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:55,032 INFO L87 Difference]: Start difference. First operand 5299 states and 25010 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:55,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:55,140 INFO L93 Difference]: Finished difference Result 12001 states and 53631 transitions. [2021-05-22 02:08:55,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:55,140 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:55,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:55,171 INFO L225 Difference]: With dead ends: 12001 [2021-05-22 02:08:55,171 INFO L226 Difference]: Without dead ends: 11416 [2021-05-22 02:08:55,171 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:55,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11416 states. [2021-05-22 02:08:55,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11416 to 5189. [2021-05-22 02:08:55,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 4.732652274479568) internal successors, (24553), 5188 states have internal predecessors, (24553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:55,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 24553 transitions. [2021-05-22 02:08:55,420 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 24553 transitions. Word has length 29 [2021-05-22 02:08:55,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:55,420 INFO L482 AbstractCegarLoop]: Abstraction has 5189 states and 24553 transitions. [2021-05-22 02:08:55,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:55,421 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 24553 transitions. [2021-05-22 02:08:55,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:55,429 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:55,429 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:55,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1386 [2021-05-22 02:08:55,429 INFO L430 AbstractCegarLoop]: === Iteration 1388 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:55,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:55,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1533745347, now seen corresponding path program 1383 times [2021-05-22 02:08:55,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:55,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119848359] [2021-05-22 02:08:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:55,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:55,536 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:55,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119848359] [2021-05-22 02:08:55,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119848359] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:55,536 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:55,536 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:55,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026842987] [2021-05-22 02:08:55,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:55,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:55,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:55,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:55,536 INFO L87 Difference]: Start difference. First operand 5189 states and 24553 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:55,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:55,632 INFO L93 Difference]: Finished difference Result 11827 states and 52962 transitions. [2021-05-22 02:08:55,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:55,632 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:55,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:55,662 INFO L225 Difference]: With dead ends: 11827 [2021-05-22 02:08:55,662 INFO L226 Difference]: Without dead ends: 11285 [2021-05-22 02:08:55,662 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:55,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11285 states. [2021-05-22 02:08:55,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11285 to 5293. [2021-05-22 02:08:55,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5293 states, 5292 states have (on average 4.712962962962963) internal successors, (24941), 5292 states have internal predecessors, (24941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:55,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 24941 transitions. [2021-05-22 02:08:55,899 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 24941 transitions. Word has length 29 [2021-05-22 02:08:55,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:55,899 INFO L482 AbstractCegarLoop]: Abstraction has 5293 states and 24941 transitions. [2021-05-22 02:08:55,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:55,899 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 24941 transitions. [2021-05-22 02:08:55,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:55,908 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:55,908 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:55,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1387 [2021-05-22 02:08:55,908 INFO L430 AbstractCegarLoop]: === Iteration 1389 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:55,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:55,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1390968933, now seen corresponding path program 1384 times [2021-05-22 02:08:55,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:55,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12017740] [2021-05-22 02:08:55,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:56,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:56,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:56,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12017740] [2021-05-22 02:08:56,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12017740] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:56,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:56,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:56,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130753858] [2021-05-22 02:08:56,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:56,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:56,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:56,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:56,013 INFO L87 Difference]: Start difference. First operand 5293 states and 24941 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:56,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:56,122 INFO L93 Difference]: Finished difference Result 11428 states and 51370 transitions. [2021-05-22 02:08:56,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:56,122 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:56,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:56,150 INFO L225 Difference]: With dead ends: 11428 [2021-05-22 02:08:56,151 INFO L226 Difference]: Without dead ends: 10861 [2021-05-22 02:08:56,151 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:56,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10861 states. [2021-05-22 02:08:56,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10861 to 5189. [2021-05-22 02:08:56,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 4.722629144178875) internal successors, (24501), 5188 states have internal predecessors, (24501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:56,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 24501 transitions. [2021-05-22 02:08:56,392 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 24501 transitions. Word has length 29 [2021-05-22 02:08:56,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:56,392 INFO L482 AbstractCegarLoop]: Abstraction has 5189 states and 24501 transitions. [2021-05-22 02:08:56,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:56,392 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 24501 transitions. [2021-05-22 02:08:56,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:56,401 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:56,401 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:56,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1388 [2021-05-22 02:08:56,401 INFO L430 AbstractCegarLoop]: === Iteration 1390 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:56,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:56,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1694697371, now seen corresponding path program 1385 times [2021-05-22 02:08:56,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:56,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946335891] [2021-05-22 02:08:56,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:56,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:56,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946335891] [2021-05-22 02:08:56,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946335891] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:56,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:56,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:56,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608802378] [2021-05-22 02:08:56,496 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:56,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:56,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:56,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:56,496 INFO L87 Difference]: Start difference. First operand 5189 states and 24501 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:56,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:56,613 INFO L93 Difference]: Finished difference Result 11728 states and 52503 transitions. [2021-05-22 02:08:56,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:56,614 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:56,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:56,643 INFO L225 Difference]: With dead ends: 11728 [2021-05-22 02:08:56,643 INFO L226 Difference]: Without dead ends: 11253 [2021-05-22 02:08:56,644 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:56,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11253 states. [2021-05-22 02:08:56,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11253 to 5261. [2021-05-22 02:08:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 4.710456273764258) internal successors, (24777), 5260 states have internal predecessors, (24777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 24777 transitions. [2021-05-22 02:08:56,886 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 24777 transitions. Word has length 29 [2021-05-22 02:08:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:56,886 INFO L482 AbstractCegarLoop]: Abstraction has 5261 states and 24777 transitions. [2021-05-22 02:08:56,886 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 24777 transitions. [2021-05-22 02:08:56,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:56,894 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:56,894 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:56,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1389 [2021-05-22 02:08:56,894 INFO L430 AbstractCegarLoop]: === Iteration 1391 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:56,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:56,895 INFO L82 PathProgramCache]: Analyzing trace with hash 484190275, now seen corresponding path program 1386 times [2021-05-22 02:08:56,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:56,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50387091] [2021-05-22 02:08:56,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:56,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:56,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50387091] [2021-05-22 02:08:56,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50387091] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:56,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:56,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:56,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315142655] [2021-05-22 02:08:56,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:56,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:56,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:56,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:56,990 INFO L87 Difference]: Start difference. First operand 5261 states and 24777 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:57,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:57,104 INFO L93 Difference]: Finished difference Result 11396 states and 51206 transitions. [2021-05-22 02:08:57,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:57,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:57,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:57,132 INFO L225 Difference]: With dead ends: 11396 [2021-05-22 02:08:57,132 INFO L226 Difference]: Without dead ends: 10809 [2021-05-22 02:08:57,132 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:57,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10809 states. [2021-05-22 02:08:57,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10809 to 5137. [2021-05-22 02:08:57,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.732671339563863) internal successors, (24307), 5136 states have internal predecessors, (24307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:57,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24307 transitions. [2021-05-22 02:08:57,379 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24307 transitions. Word has length 29 [2021-05-22 02:08:57,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:57,379 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24307 transitions. [2021-05-22 02:08:57,379 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:57,379 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24307 transitions. [2021-05-22 02:08:57,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:57,388 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:57,388 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:57,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1390 [2021-05-22 02:08:57,388 INFO L430 AbstractCegarLoop]: === Iteration 1392 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:57,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:57,388 INFO L82 PathProgramCache]: Analyzing trace with hash -648688569, now seen corresponding path program 1387 times [2021-05-22 02:08:57,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:57,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385210770] [2021-05-22 02:08:57,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:57,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:57,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:57,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385210770] [2021-05-22 02:08:57,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385210770] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:57,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:57,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:57,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888388731] [2021-05-22 02:08:57,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:57,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:57,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:57,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:57,484 INFO L87 Difference]: Start difference. First operand 5137 states and 24307 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:57,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:57,595 INFO L93 Difference]: Finished difference Result 11793 states and 52836 transitions. [2021-05-22 02:08:57,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:57,596 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:57,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:57,625 INFO L225 Difference]: With dead ends: 11793 [2021-05-22 02:08:57,626 INFO L226 Difference]: Without dead ends: 11316 [2021-05-22 02:08:57,626 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:57,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11316 states. [2021-05-22 02:08:57,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11316 to 5251. [2021-05-22 02:08:57,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 4.722285714285714) internal successors, (24792), 5250 states have internal predecessors, (24792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:57,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 24792 transitions. [2021-05-22 02:08:57,867 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 24792 transitions. Word has length 29 [2021-05-22 02:08:57,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:57,867 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 24792 transitions. [2021-05-22 02:08:57,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:57,867 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 24792 transitions. [2021-05-22 02:08:57,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:57,875 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:57,875 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:57,875 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1391 [2021-05-22 02:08:57,875 INFO L430 AbstractCegarLoop]: === Iteration 1393 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:57,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:57,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1530199077, now seen corresponding path program 1388 times [2021-05-22 02:08:57,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:57,876 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485755550] [2021-05-22 02:08:57,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:57,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:57,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485755550] [2021-05-22 02:08:57,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485755550] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:57,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:57,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:57,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232784640] [2021-05-22 02:08:57,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:57,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:57,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:57,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:57,973 INFO L87 Difference]: Start difference. First operand 5251 states and 24792 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:58,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:58,083 INFO L93 Difference]: Finished difference Result 11791 states and 52753 transitions. [2021-05-22 02:08:58,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:58,083 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:58,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:58,113 INFO L225 Difference]: With dead ends: 11791 [2021-05-22 02:08:58,113 INFO L226 Difference]: Without dead ends: 11238 [2021-05-22 02:08:58,113 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:58,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11238 states. [2021-05-22 02:08:58,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11238 to 5173. [2021-05-22 02:08:58,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 4.729891724671307) internal successors, (24463), 5172 states have internal predecessors, (24463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:58,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 24463 transitions. [2021-05-22 02:08:58,360 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 24463 transitions. Word has length 29 [2021-05-22 02:08:58,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:58,360 INFO L482 AbstractCegarLoop]: Abstraction has 5173 states and 24463 transitions. [2021-05-22 02:08:58,360 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:58,360 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 24463 transitions. [2021-05-22 02:08:58,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:58,369 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:58,369 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:58,369 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1392 [2021-05-22 02:08:58,369 INFO L430 AbstractCegarLoop]: === Iteration 1394 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:58,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:58,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1613266085, now seen corresponding path program 1389 times [2021-05-22 02:08:58,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:58,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603428490] [2021-05-22 02:08:58,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:58,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:58,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603428490] [2021-05-22 02:08:58,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603428490] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:58,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:58,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:58,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922020450] [2021-05-22 02:08:58,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:58,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:58,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:58,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:58,477 INFO L87 Difference]: Start difference. First operand 5173 states and 24463 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:58,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:58,583 INFO L93 Difference]: Finished difference Result 11617 states and 52068 transitions. [2021-05-22 02:08:58,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:58,583 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:58,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:58,612 INFO L225 Difference]: With dead ends: 11617 [2021-05-22 02:08:58,612 INFO L226 Difference]: Without dead ends: 11140 [2021-05-22 02:08:58,612 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:58,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11140 states. [2021-05-22 02:08:58,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11140 to 5245. [2021-05-22 02:08:58,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 5244 states have (on average 4.717581998474447) internal successors, (24739), 5244 states have internal predecessors, (24739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:58,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 24739 transitions. [2021-05-22 02:08:58,857 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 24739 transitions. Word has length 29 [2021-05-22 02:08:58,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:58,857 INFO L482 AbstractCegarLoop]: Abstraction has 5245 states and 24739 transitions. [2021-05-22 02:08:58,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:58,857 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 24739 transitions. [2021-05-22 02:08:58,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:58,866 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:58,866 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:58,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1393 [2021-05-22 02:08:58,867 INFO L430 AbstractCegarLoop]: === Iteration 1395 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:58,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:58,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1880583461, now seen corresponding path program 1390 times [2021-05-22 02:08:58,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:58,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025535068] [2021-05-22 02:08:58,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:58,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:58,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:58,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025535068] [2021-05-22 02:08:58,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025535068] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:58,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:58,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:58,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993354114] [2021-05-22 02:08:58,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:58,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:58,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:58,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:58,973 INFO L87 Difference]: Start difference. First operand 5245 states and 24739 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:59,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:59,082 INFO L93 Difference]: Finished difference Result 11283 states and 50766 transitions. [2021-05-22 02:08:59,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:59,082 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:59,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:59,109 INFO L225 Difference]: With dead ends: 11283 [2021-05-22 02:08:59,110 INFO L226 Difference]: Without dead ends: 10748 [2021-05-22 02:08:59,110 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:59,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10748 states. [2021-05-22 02:08:59,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10748 to 5173. [2021-05-22 02:08:59,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5172 states have (on average 4.72293116782676) internal successors, (24427), 5172 states have internal predecessors, (24427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:59,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 24427 transitions. [2021-05-22 02:08:59,345 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 24427 transitions. Word has length 29 [2021-05-22 02:08:59,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:59,346 INFO L482 AbstractCegarLoop]: Abstraction has 5173 states and 24427 transitions. [2021-05-22 02:08:59,346 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:59,346 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 24427 transitions. [2021-05-22 02:08:59,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:59,354 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:59,354 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:59,354 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1394 [2021-05-22 02:08:59,354 INFO L430 AbstractCegarLoop]: === Iteration 1396 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:59,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:59,354 INFO L82 PathProgramCache]: Analyzing trace with hash -522715773, now seen corresponding path program 1391 times [2021-05-22 02:08:59,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:59,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599504427] [2021-05-22 02:08:59,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:59,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:59,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599504427] [2021-05-22 02:08:59,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599504427] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:59,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:59,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:59,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627996420] [2021-05-22 02:08:59,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:59,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:59,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:59,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:59,450 INFO L87 Difference]: Start difference. First operand 5173 states and 24427 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:59,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:08:59,558 INFO L93 Difference]: Finished difference Result 11615 states and 52027 transitions. [2021-05-22 02:08:59,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:08:59,558 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:08:59,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:08:59,586 INFO L225 Difference]: With dead ends: 11615 [2021-05-22 02:08:59,587 INFO L226 Difference]: Without dead ends: 11140 [2021-05-22 02:08:59,587 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:08:59,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11140 states. [2021-05-22 02:08:59,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11140 to 5245. [2021-05-22 02:08:59,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 5244 states have (on average 4.710717009916094) internal successors, (24703), 5244 states have internal predecessors, (24703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:59,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 24703 transitions. [2021-05-22 02:08:59,825 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 24703 transitions. Word has length 29 [2021-05-22 02:08:59,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:08:59,825 INFO L482 AbstractCegarLoop]: Abstraction has 5245 states and 24703 transitions. [2021-05-22 02:08:59,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:08:59,825 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 24703 transitions. [2021-05-22 02:08:59,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:08:59,833 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:08:59,833 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:08:59,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1395 [2021-05-22 02:08:59,834 INFO L430 AbstractCegarLoop]: === Iteration 1397 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:08:59,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:08:59,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1696675483, now seen corresponding path program 1392 times [2021-05-22 02:08:59,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:08:59,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563116073] [2021-05-22 02:08:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:08:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:08:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:08:59,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:08:59,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563116073] [2021-05-22 02:08:59,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563116073] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:08:59,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:08:59,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:08:59,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196915234] [2021-05-22 02:08:59,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:08:59,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:08:59,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:08:59,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:08:59,930 INFO L87 Difference]: Start difference. First operand 5245 states and 24703 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:00,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:00,048 INFO L93 Difference]: Finished difference Result 11283 states and 50730 transitions. [2021-05-22 02:09:00,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:00,048 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:00,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:00,076 INFO L225 Difference]: With dead ends: 11283 [2021-05-22 02:09:00,076 INFO L226 Difference]: Without dead ends: 10670 [2021-05-22 02:09:00,076 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:00,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10670 states. [2021-05-22 02:09:00,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10670 to 5095. [2021-05-22 02:09:00,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5095 states, 5094 states have (on average 4.746368276403612) internal successors, (24178), 5094 states have internal predecessors, (24178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:00,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 24178 transitions. [2021-05-22 02:09:00,310 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 24178 transitions. Word has length 29 [2021-05-22 02:09:00,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:00,310 INFO L482 AbstractCegarLoop]: Abstraction has 5095 states and 24178 transitions. [2021-05-22 02:09:00,310 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:00,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 24178 transitions. [2021-05-22 02:09:00,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:00,319 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:00,319 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:00,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1396 [2021-05-22 02:09:00,319 INFO L430 AbstractCegarLoop]: === Iteration 1398 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:00,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:00,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1774300103, now seen corresponding path program 1393 times [2021-05-22 02:09:00,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:00,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33269395] [2021-05-22 02:09:00,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:00,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:00,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:00,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33269395] [2021-05-22 02:09:00,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33269395] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:00,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:00,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:00,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347435791] [2021-05-22 02:09:00,431 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:00,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:00,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:00,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:00,431 INFO L87 Difference]: Start difference. First operand 5095 states and 24178 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:00,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:00,523 INFO L93 Difference]: Finished difference Result 11739 states and 52523 transitions. [2021-05-22 02:09:00,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:00,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:00,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:00,550 INFO L225 Difference]: With dead ends: 11739 [2021-05-22 02:09:00,550 INFO L226 Difference]: Without dead ends: 11197 [2021-05-22 02:09:00,550 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:00,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11197 states. [2021-05-22 02:09:00,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11197 to 5235. [2021-05-22 02:09:00,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5235 states, 5234 states have (on average 4.734810852120749) internal successors, (24782), 5234 states have internal predecessors, (24782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5235 states to 5235 states and 24782 transitions. [2021-05-22 02:09:00,790 INFO L78 Accepts]: Start accepts. Automaton has 5235 states and 24782 transitions. Word has length 29 [2021-05-22 02:09:00,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:00,791 INFO L482 AbstractCegarLoop]: Abstraction has 5235 states and 24782 transitions. [2021-05-22 02:09:00,791 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:00,791 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 24782 transitions. [2021-05-22 02:09:00,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:00,799 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:00,799 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:00,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1397 [2021-05-22 02:09:00,799 INFO L430 AbstractCegarLoop]: === Iteration 1399 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:00,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:00,799 INFO L82 PathProgramCache]: Analyzing trace with hash 86053831, now seen corresponding path program 1394 times [2021-05-22 02:09:00,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:00,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64220563] [2021-05-22 02:09:00,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:00,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:00,910 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:00,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64220563] [2021-05-22 02:09:00,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64220563] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:00,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:00,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:00,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947205257] [2021-05-22 02:09:00,911 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:00,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:00,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:00,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:00,911 INFO L87 Difference]: Start difference. First operand 5235 states and 24782 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:01,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:01,009 INFO L93 Difference]: Finished difference Result 11612 states and 51916 transitions. [2021-05-22 02:09:01,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:01,010 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:01,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:01,039 INFO L225 Difference]: With dead ends: 11612 [2021-05-22 02:09:01,039 INFO L226 Difference]: Without dead ends: 11117 [2021-05-22 02:09:01,039 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:01,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11117 states. [2021-05-22 02:09:01,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11117 to 5155. [2021-05-22 02:09:01,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.744664338377959) internal successors, (24454), 5154 states have internal predecessors, (24454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:01,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24454 transitions. [2021-05-22 02:09:01,275 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24454 transitions. Word has length 29 [2021-05-22 02:09:01,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:01,275 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24454 transitions. [2021-05-22 02:09:01,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:01,275 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24454 transitions. [2021-05-22 02:09:01,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:01,283 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:01,283 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:01,283 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1398 [2021-05-22 02:09:01,284 INFO L430 AbstractCegarLoop]: === Iteration 1400 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:01,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:01,284 INFO L82 PathProgramCache]: Analyzing trace with hash -248761435, now seen corresponding path program 1395 times [2021-05-22 02:09:01,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:01,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340100647] [2021-05-22 02:09:01,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:01,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:01,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:01,388 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340100647] [2021-05-22 02:09:01,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340100647] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:01,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:01,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:01,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913081002] [2021-05-22 02:09:01,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:01,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:01,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:01,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:01,388 INFO L87 Difference]: Start difference. First operand 5155 states and 24454 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:01,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:01,492 INFO L93 Difference]: Finished difference Result 11829 states and 52894 transitions. [2021-05-22 02:09:01,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:01,492 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:01,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:01,520 INFO L225 Difference]: With dead ends: 11829 [2021-05-22 02:09:01,520 INFO L226 Difference]: Without dead ends: 11287 [2021-05-22 02:09:01,520 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:01,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11287 states. [2021-05-22 02:09:01,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11287 to 5265. [2021-05-22 02:09:01,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5265 states, 5264 states have (on average 4.7224544072948325) internal successors, (24859), 5264 states have internal predecessors, (24859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:01,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5265 states to 5265 states and 24859 transitions. [2021-05-22 02:09:01,764 INFO L78 Accepts]: Start accepts. Automaton has 5265 states and 24859 transitions. Word has length 29 [2021-05-22 02:09:01,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:01,764 INFO L482 AbstractCegarLoop]: Abstraction has 5265 states and 24859 transitions. [2021-05-22 02:09:01,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:01,764 INFO L276 IsEmpty]: Start isEmpty. Operand 5265 states and 24859 transitions. [2021-05-22 02:09:01,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:01,772 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:01,772 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:01,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1399 [2021-05-22 02:09:01,773 INFO L430 AbstractCegarLoop]: === Iteration 1401 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:01,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:01,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1120859079, now seen corresponding path program 1396 times [2021-05-22 02:09:01,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:01,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66610847] [2021-05-22 02:09:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:01,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:01,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:01,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66610847] [2021-05-22 02:09:01,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66610847] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:01,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:01,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:01,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598116439] [2021-05-22 02:09:01,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:01,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:01,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:01,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:01,875 INFO L87 Difference]: Start difference. First operand 5265 states and 24859 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:01,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:01,993 INFO L93 Difference]: Finished difference Result 11762 states and 52521 transitions. [2021-05-22 02:09:01,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:01,994 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:01,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:02,021 INFO L225 Difference]: With dead ends: 11762 [2021-05-22 02:09:02,022 INFO L226 Difference]: Without dead ends: 11177 [2021-05-22 02:09:02,022 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:02,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11177 states. [2021-05-22 02:09:02,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11177 to 5155. [2021-05-22 02:09:02,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.736903376018626) internal successors, (24414), 5154 states have internal predecessors, (24414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:02,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24414 transitions. [2021-05-22 02:09:02,256 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24414 transitions. Word has length 29 [2021-05-22 02:09:02,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:02,256 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24414 transitions. [2021-05-22 02:09:02,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:02,256 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24414 transitions. [2021-05-22 02:09:02,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:02,264 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:02,264 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:02,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1400 [2021-05-22 02:09:02,264 INFO L430 AbstractCegarLoop]: === Iteration 1402 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:02,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:02,264 INFO L82 PathProgramCache]: Analyzing trace with hash 476015559, now seen corresponding path program 1397 times [2021-05-22 02:09:02,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:02,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504360750] [2021-05-22 02:09:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:02,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:02,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:02,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504360750] [2021-05-22 02:09:02,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504360750] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:02,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:02,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:02,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115757436] [2021-05-22 02:09:02,379 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:02,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:02,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:02,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:02,379 INFO L87 Difference]: Start difference. First operand 5155 states and 24414 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:02,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:02,488 INFO L93 Difference]: Finished difference Result 11513 states and 51509 transitions. [2021-05-22 02:09:02,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:02,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:02,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:02,516 INFO L225 Difference]: With dead ends: 11513 [2021-05-22 02:09:02,516 INFO L226 Difference]: Without dead ends: 11098 [2021-05-22 02:09:02,516 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:02,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11098 states. [2021-05-22 02:09:02,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11098 to 5203. [2021-05-22 02:09:02,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.727028066128412) internal successors, (24590), 5202 states have internal predecessors, (24590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:02,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24590 transitions. [2021-05-22 02:09:02,765 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24590 transitions. Word has length 29 [2021-05-22 02:09:02,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:02,765 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24590 transitions. [2021-05-22 02:09:02,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:02,765 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24590 transitions. [2021-05-22 02:09:02,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:02,774 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:02,774 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:02,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1401 [2021-05-22 02:09:02,774 INFO L430 AbstractCegarLoop]: === Iteration 1403 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:02,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:02,774 INFO L82 PathProgramCache]: Analyzing trace with hash -370781403, now seen corresponding path program 1398 times [2021-05-22 02:09:02,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:02,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694756359] [2021-05-22 02:09:02,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:02,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:02,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694756359] [2021-05-22 02:09:02,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694756359] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:02,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:02,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:02,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601417468] [2021-05-22 02:09:02,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:02,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:02,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:02,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:02,888 INFO L87 Difference]: Start difference. First operand 5203 states and 24590 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:03,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:03,018 INFO L93 Difference]: Finished difference Result 11573 states and 51725 transitions. [2021-05-22 02:09:03,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:03,018 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:03,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:03,047 INFO L225 Difference]: With dead ends: 11573 [2021-05-22 02:09:03,047 INFO L226 Difference]: Without dead ends: 11010 [2021-05-22 02:09:03,047 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:03,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11010 states. [2021-05-22 02:09:03,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11010 to 5115. [2021-05-22 02:09:03,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 4.745795854517012) internal successors, (24270), 5114 states have internal predecessors, (24270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:03,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 24270 transitions. [2021-05-22 02:09:03,283 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 24270 transitions. Word has length 29 [2021-05-22 02:09:03,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:03,283 INFO L482 AbstractCegarLoop]: Abstraction has 5115 states and 24270 transitions. [2021-05-22 02:09:03,283 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:03,283 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 24270 transitions. [2021-05-22 02:09:03,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:03,292 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:03,292 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:03,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1402 [2021-05-22 02:09:03,292 INFO L430 AbstractCegarLoop]: === Iteration 1404 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:03,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:03,292 INFO L82 PathProgramCache]: Analyzing trace with hash -2035696475, now seen corresponding path program 1399 times [2021-05-22 02:09:03,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:03,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864511594] [2021-05-22 02:09:03,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:03,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:03,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:03,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864511594] [2021-05-22 02:09:03,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864511594] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:03,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:03,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:03,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950270758] [2021-05-22 02:09:03,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:03,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:03,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:03,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:03,405 INFO L87 Difference]: Start difference. First operand 5115 states and 24270 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:03,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:03,517 INFO L93 Difference]: Finished difference Result 11641 states and 52072 transitions. [2021-05-22 02:09:03,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:03,517 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:03,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:03,599 INFO L225 Difference]: With dead ends: 11641 [2021-05-22 02:09:03,599 INFO L226 Difference]: Without dead ends: 11099 [2021-05-22 02:09:03,599 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:03,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11099 states. [2021-05-22 02:09:03,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11099 to 5235. [2021-05-22 02:09:03,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5235 states, 5234 states have (on average 4.73098968284295) internal successors, (24762), 5234 states have internal predecessors, (24762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5235 states to 5235 states and 24762 transitions. [2021-05-22 02:09:03,827 INFO L78 Accepts]: Start accepts. Automaton has 5235 states and 24762 transitions. Word has length 29 [2021-05-22 02:09:03,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:03,827 INFO L482 AbstractCegarLoop]: Abstraction has 5235 states and 24762 transitions. [2021-05-22 02:09:03,827 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:03,827 INFO L276 IsEmpty]: Start isEmpty. Operand 5235 states and 24762 transitions. [2021-05-22 02:09:03,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:03,836 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:03,836 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:03,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1403 [2021-05-22 02:09:03,836 INFO L430 AbstractCegarLoop]: === Iteration 1405 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:03,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:03,836 INFO L82 PathProgramCache]: Analyzing trace with hash 571024549, now seen corresponding path program 1400 times [2021-05-22 02:09:03,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:03,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037678111] [2021-05-22 02:09:03,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:03,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:03,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037678111] [2021-05-22 02:09:03,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037678111] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:03,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:03,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:03,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512309774] [2021-05-22 02:09:03,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:03,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:03,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:03,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:03,947 INFO L87 Difference]: Start difference. First operand 5235 states and 24762 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:04,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:04,039 INFO L93 Difference]: Finished difference Result 11514 states and 51465 transitions. [2021-05-22 02:09:04,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:04,039 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:04,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:04,068 INFO L225 Difference]: With dead ends: 11514 [2021-05-22 02:09:04,069 INFO L226 Difference]: Without dead ends: 11019 [2021-05-22 02:09:04,069 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:04,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11019 states. [2021-05-22 02:09:04,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11019 to 5155. [2021-05-22 02:09:04,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.740783857198292) internal successors, (24434), 5154 states have internal predecessors, (24434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:04,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24434 transitions. [2021-05-22 02:09:04,310 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24434 transitions. Word has length 29 [2021-05-22 02:09:04,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:04,311 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24434 transitions. [2021-05-22 02:09:04,311 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:04,311 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24434 transitions. [2021-05-22 02:09:04,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:04,319 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:04,319 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:04,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1404 [2021-05-22 02:09:04,319 INFO L430 AbstractCegarLoop]: === Iteration 1406 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:04,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:04,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1463182501, now seen corresponding path program 1401 times [2021-05-22 02:09:04,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:04,320 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059202674] [2021-05-22 02:09:04,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:04,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:04,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:04,433 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059202674] [2021-05-22 02:09:04,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059202674] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:04,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:04,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:04,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534372043] [2021-05-22 02:09:04,433 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:04,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:04,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:04,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:04,433 INFO L87 Difference]: Start difference. First operand 5155 states and 24434 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:04,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:04,526 INFO L93 Difference]: Finished difference Result 11490 states and 51453 transitions. [2021-05-22 02:09:04,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:04,526 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:04,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:04,556 INFO L225 Difference]: With dead ends: 11490 [2021-05-22 02:09:04,556 INFO L226 Difference]: Without dead ends: 10948 [2021-05-22 02:09:04,556 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:04,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10948 states. [2021-05-22 02:09:04,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10948 to 5259. [2021-05-22 02:09:04,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5259 states, 5258 states have (on average 4.7208063902624575) internal successors, (24822), 5258 states have internal predecessors, (24822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:04,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5259 states to 5259 states and 24822 transitions. [2021-05-22 02:09:04,797 INFO L78 Accepts]: Start accepts. Automaton has 5259 states and 24822 transitions. Word has length 29 [2021-05-22 02:09:04,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:04,797 INFO L482 AbstractCegarLoop]: Abstraction has 5259 states and 24822 transitions. [2021-05-22 02:09:04,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:04,797 INFO L276 IsEmpty]: Start isEmpty. Operand 5259 states and 24822 transitions. [2021-05-22 02:09:04,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:04,806 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:04,806 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:04,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1405 [2021-05-22 02:09:04,806 INFO L430 AbstractCegarLoop]: === Iteration 1407 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:04,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:04,806 INFO L82 PathProgramCache]: Analyzing trace with hash 627348423, now seen corresponding path program 1402 times [2021-05-22 02:09:04,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:04,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322532740] [2021-05-22 02:09:04,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:04,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:04,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322532740] [2021-05-22 02:09:04,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322532740] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:04,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:04,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:04,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149555914] [2021-05-22 02:09:04,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:04,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:04,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:04,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:04,916 INFO L87 Difference]: Start difference. First operand 5259 states and 24822 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:05,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:05,021 INFO L93 Difference]: Finished difference Result 11091 states and 49861 transitions. [2021-05-22 02:09:05,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:05,021 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:05,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:05,048 INFO L225 Difference]: With dead ends: 11091 [2021-05-22 02:09:05,048 INFO L226 Difference]: Without dead ends: 10524 [2021-05-22 02:09:05,048 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:05,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10524 states. [2021-05-22 02:09:05,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10524 to 5155. [2021-05-22 02:09:05,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5154 states have (on average 4.73302289483896) internal successors, (24394), 5154 states have internal predecessors, (24394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:05,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 24394 transitions. [2021-05-22 02:09:05,286 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 24394 transitions. Word has length 29 [2021-05-22 02:09:05,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:05,286 INFO L482 AbstractCegarLoop]: Abstraction has 5155 states and 24394 transitions. [2021-05-22 02:09:05,286 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:05,286 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 24394 transitions. [2021-05-22 02:09:05,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:05,295 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:05,295 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:05,295 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1406 [2021-05-22 02:09:05,295 INFO L430 AbstractCegarLoop]: === Iteration 1408 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:05,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:05,295 INFO L82 PathProgramCache]: Analyzing trace with hash 801844167, now seen corresponding path program 1403 times [2021-05-22 02:09:05,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:05,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643448254] [2021-05-22 02:09:05,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:05,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:05,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643448254] [2021-05-22 02:09:05,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643448254] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:05,398 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:05,398 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:05,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985655163] [2021-05-22 02:09:05,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:05,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:05,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:05,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:05,398 INFO L87 Difference]: Start difference. First operand 5155 states and 24394 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:05,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:05,498 INFO L93 Difference]: Finished difference Result 11307 states and 50618 transitions. [2021-05-22 02:09:05,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:05,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:05,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:05,529 INFO L225 Difference]: With dead ends: 11307 [2021-05-22 02:09:05,529 INFO L226 Difference]: Without dead ends: 10892 [2021-05-22 02:09:05,529 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 109.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:05,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10892 states. [2021-05-22 02:09:05,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10892 to 5203. [2021-05-22 02:09:05,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.72318339100346) internal successors, (24570), 5202 states have internal predecessors, (24570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24570 transitions. [2021-05-22 02:09:05,770 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24570 transitions. Word has length 29 [2021-05-22 02:09:05,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:05,770 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24570 transitions. [2021-05-22 02:09:05,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:05,770 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24570 transitions. [2021-05-22 02:09:05,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:05,779 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:05,779 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:05,779 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1407 [2021-05-22 02:09:05,779 INFO L430 AbstractCegarLoop]: === Iteration 1409 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:05,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:05,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1711449125, now seen corresponding path program 1404 times [2021-05-22 02:09:05,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:05,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063154633] [2021-05-22 02:09:05,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:05,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:05,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:05,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063154633] [2021-05-22 02:09:05,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063154633] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:05,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:05,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:05,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115488363] [2021-05-22 02:09:05,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:05,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:05,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:05,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:05,881 INFO L87 Difference]: Start difference. First operand 5203 states and 24570 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:05,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:05,988 INFO L93 Difference]: Finished difference Result 11035 states and 49609 transitions. [2021-05-22 02:09:05,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:05,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:05,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:06,015 INFO L225 Difference]: With dead ends: 11035 [2021-05-22 02:09:06,015 INFO L226 Difference]: Without dead ends: 10484 [2021-05-22 02:09:06,015 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:06,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10484 states. [2021-05-22 02:09:06,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10484 to 5115. [2021-05-22 02:09:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 4.741885021509582) internal successors, (24250), 5114 states have internal predecessors, (24250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:06,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 24250 transitions. [2021-05-22 02:09:06,252 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 24250 transitions. Word has length 29 [2021-05-22 02:09:06,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:06,252 INFO L482 AbstractCegarLoop]: Abstraction has 5115 states and 24250 transitions. [2021-05-22 02:09:06,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:06,252 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 24250 transitions. [2021-05-22 02:09:06,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:06,260 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:06,260 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:06,261 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1408 [2021-05-22 02:09:06,261 INFO L430 AbstractCegarLoop]: === Iteration 1410 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:06,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:06,261 INFO L82 PathProgramCache]: Analyzing trace with hash -736867069, now seen corresponding path program 1405 times [2021-05-22 02:09:06,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:06,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924509469] [2021-05-22 02:09:06,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:06,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:06,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924509469] [2021-05-22 02:09:06,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924509469] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:06,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:06,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:06,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317574163] [2021-05-22 02:09:06,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:06,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:06,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:06,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:06,357 INFO L87 Difference]: Start difference. First operand 5115 states and 24250 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:06,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:06,451 INFO L93 Difference]: Finished difference Result 11827 states and 52919 transitions. [2021-05-22 02:09:06,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:06,452 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:06,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:06,480 INFO L225 Difference]: With dead ends: 11827 [2021-05-22 02:09:06,480 INFO L226 Difference]: Without dead ends: 11285 [2021-05-22 02:09:06,480 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 102.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:06,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11285 states. [2021-05-22 02:09:06,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11285 to 5277. [2021-05-22 02:09:06,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5277 states, 5276 states have (on average 4.724601971190296) internal successors, (24927), 5276 states have internal predecessors, (24927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:06,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 24927 transitions. [2021-05-22 02:09:06,722 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 24927 transitions. Word has length 29 [2021-05-22 02:09:06,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:06,722 INFO L482 AbstractCegarLoop]: Abstraction has 5277 states and 24927 transitions. [2021-05-22 02:09:06,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:06,722 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 24927 transitions. [2021-05-22 02:09:06,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:06,730 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:06,730 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:06,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1409 [2021-05-22 02:09:06,730 INFO L430 AbstractCegarLoop]: === Iteration 1411 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:06,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:06,730 INFO L82 PathProgramCache]: Analyzing trace with hash 632753445, now seen corresponding path program 1406 times [2021-05-22 02:09:06,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:06,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541518492] [2021-05-22 02:09:06,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:06,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:06,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541518492] [2021-05-22 02:09:06,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541518492] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:06,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:06,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:06,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395590961] [2021-05-22 02:09:06,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:06,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:06,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:06,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:06,828 INFO L87 Difference]: Start difference. First operand 5277 states and 24927 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:06,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:06,936 INFO L93 Difference]: Finished difference Result 11760 states and 52546 transitions. [2021-05-22 02:09:06,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:06,936 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:06,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:06,965 INFO L225 Difference]: With dead ends: 11760 [2021-05-22 02:09:06,965 INFO L226 Difference]: Without dead ends: 11175 [2021-05-22 02:09:06,965 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:07,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11175 states. [2021-05-22 02:09:07,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11175 to 5167. [2021-05-22 02:09:07,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.736740224545103) internal successors, (24470), 5166 states have internal predecessors, (24470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:07,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24470 transitions. [2021-05-22 02:09:07,198 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24470 transitions. Word has length 29 [2021-05-22 02:09:07,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:07,198 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24470 transitions. [2021-05-22 02:09:07,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:07,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24470 transitions. [2021-05-22 02:09:07,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:07,207 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:07,207 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:07,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1410 [2021-05-22 02:09:07,207 INFO L430 AbstractCegarLoop]: === Iteration 1412 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:07,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:07,207 INFO L82 PathProgramCache]: Analyzing trace with hash 664250469, now seen corresponding path program 1407 times [2021-05-22 02:09:07,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:07,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804854065] [2021-05-22 02:09:07,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:07,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:07,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804854065] [2021-05-22 02:09:07,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804854065] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:07,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:07,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:07,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341588157] [2021-05-22 02:09:07,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:07,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:07,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:07,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:07,313 INFO L87 Difference]: Start difference. First operand 5167 states and 24470 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:07,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:07,407 INFO L93 Difference]: Finished difference Result 11586 states and 51877 transitions. [2021-05-22 02:09:07,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:07,407 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:07,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:07,435 INFO L225 Difference]: With dead ends: 11586 [2021-05-22 02:09:07,435 INFO L226 Difference]: Without dead ends: 11044 [2021-05-22 02:09:07,436 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 111.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:07,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11044 states. [2021-05-22 02:09:07,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11044 to 5271. [2021-05-22 02:09:07,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5271 states, 5270 states have (on average 4.716888045540797) internal successors, (24858), 5270 states have internal predecessors, (24858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:07,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5271 states to 5271 states and 24858 transitions. [2021-05-22 02:09:07,672 INFO L78 Accepts]: Start accepts. Automaton has 5271 states and 24858 transitions. Word has length 29 [2021-05-22 02:09:07,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:07,672 INFO L482 AbstractCegarLoop]: Abstraction has 5271 states and 24858 transitions. [2021-05-22 02:09:07,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:07,673 INFO L276 IsEmpty]: Start isEmpty. Operand 5271 states and 24858 transitions. [2021-05-22 02:09:07,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:07,681 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:07,681 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:07,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1411 [2021-05-22 02:09:07,681 INFO L430 AbstractCegarLoop]: === Iteration 1413 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:07,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:07,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2085395493, now seen corresponding path program 1408 times [2021-05-22 02:09:07,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:07,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137158178] [2021-05-22 02:09:07,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:07,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:07,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137158178] [2021-05-22 02:09:07,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137158178] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:07,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:07,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:07,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023344132] [2021-05-22 02:09:07,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:07,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:07,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:07,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:07,785 INFO L87 Difference]: Start difference. First operand 5271 states and 24858 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:07,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:07,892 INFO L93 Difference]: Finished difference Result 11187 states and 50285 transitions. [2021-05-22 02:09:07,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:07,893 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:07,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:07,920 INFO L225 Difference]: With dead ends: 11187 [2021-05-22 02:09:07,920 INFO L226 Difference]: Without dead ends: 10620 [2021-05-22 02:09:07,920 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:08,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10620 states. [2021-05-22 02:09:08,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10620 to 5167. [2021-05-22 02:09:08,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.726674409601239) internal successors, (24418), 5166 states have internal predecessors, (24418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:08,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24418 transitions. [2021-05-22 02:09:08,153 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24418 transitions. Word has length 29 [2021-05-22 02:09:08,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:08,153 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24418 transitions. [2021-05-22 02:09:08,153 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:08,153 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24418 transitions. [2021-05-22 02:09:08,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:08,161 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:08,161 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:08,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1412 [2021-05-22 02:09:08,161 INFO L430 AbstractCegarLoop]: === Iteration 1414 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:08,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:08,161 INFO L82 PathProgramCache]: Analyzing trace with hash 555088839, now seen corresponding path program 1409 times [2021-05-22 02:09:08,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:08,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500551491] [2021-05-22 02:09:08,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:08,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:08,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500551491] [2021-05-22 02:09:08,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500551491] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:08,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:08,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:08,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184675938] [2021-05-22 02:09:08,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:08,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:08,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:08,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:08,255 INFO L87 Difference]: Start difference. First operand 5167 states and 24418 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:08,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:08,366 INFO L93 Difference]: Finished difference Result 11487 states and 51418 transitions. [2021-05-22 02:09:08,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:08,366 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:08,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:08,393 INFO L225 Difference]: With dead ends: 11487 [2021-05-22 02:09:08,393 INFO L226 Difference]: Without dead ends: 11012 [2021-05-22 02:09:08,393 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:08,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11012 states. [2021-05-22 02:09:08,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11012 to 5239. [2021-05-22 02:09:08,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5239 states, 5238 states have (on average 4.714394807178312) internal successors, (24694), 5238 states have internal predecessors, (24694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:08,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5239 states to 5239 states and 24694 transitions. [2021-05-22 02:09:08,628 INFO L78 Accepts]: Start accepts. Automaton has 5239 states and 24694 transitions. Word has length 29 [2021-05-22 02:09:08,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:08,629 INFO L482 AbstractCegarLoop]: Abstraction has 5239 states and 24694 transitions. [2021-05-22 02:09:08,629 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:08,629 INFO L276 IsEmpty]: Start isEmpty. Operand 5239 states and 24694 transitions. [2021-05-22 02:09:08,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:08,637 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:08,637 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:08,637 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1413 [2021-05-22 02:09:08,637 INFO L430 AbstractCegarLoop]: === Iteration 1415 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:08,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:08,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1560990811, now seen corresponding path program 1410 times [2021-05-22 02:09:08,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:08,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396528440] [2021-05-22 02:09:08,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:08,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:08,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:08,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396528440] [2021-05-22 02:09:08,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396528440] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:08,732 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:08,732 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:08,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145281018] [2021-05-22 02:09:08,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:08,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:08,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:08,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:08,733 INFO L87 Difference]: Start difference. First operand 5239 states and 24694 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:08,855 INFO L93 Difference]: Finished difference Result 11155 states and 50121 transitions. [2021-05-22 02:09:08,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:08,856 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:08,883 INFO L225 Difference]: With dead ends: 11155 [2021-05-22 02:09:08,883 INFO L226 Difference]: Without dead ends: 10568 [2021-05-22 02:09:08,883 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:09,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10568 states. [2021-05-22 02:09:09,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10568 to 5115. [2021-05-22 02:09:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 4.737974188502151) internal successors, (24230), 5114 states have internal predecessors, (24230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:09,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 24230 transitions. [2021-05-22 02:09:09,112 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 24230 transitions. Word has length 29 [2021-05-22 02:09:09,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:09,112 INFO L482 AbstractCegarLoop]: Abstraction has 5115 states and 24230 transitions. [2021-05-22 02:09:09,112 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:09,112 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 24230 transitions. [2021-05-22 02:09:09,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:09,120 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:09,120 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:09,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1414 [2021-05-22 02:09:09,120 INFO L430 AbstractCegarLoop]: === Iteration 1416 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:09,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:09,121 INFO L82 PathProgramCache]: Analyzing trace with hash -996039737, now seen corresponding path program 1411 times [2021-05-22 02:09:09,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:09,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823070489] [2021-05-22 02:09:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:09,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:09,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823070489] [2021-05-22 02:09:09,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823070489] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:09,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:09,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:09,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273284808] [2021-05-22 02:09:09,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:09,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:09,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:09,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:09,226 INFO L87 Difference]: Start difference. First operand 5115 states and 24230 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:09,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:09,325 INFO L93 Difference]: Finished difference Result 11300 states and 50611 transitions. [2021-05-22 02:09:09,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:09,325 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:09,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:09,352 INFO L225 Difference]: With dead ends: 11300 [2021-05-22 02:09:09,352 INFO L226 Difference]: Without dead ends: 10885 [2021-05-22 02:09:09,352 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:09,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10885 states. [2021-05-22 02:09:09,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10885 to 5187. [2021-05-22 02:09:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.73004242190513) internal successors, (24530), 5186 states have internal predecessors, (24530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24530 transitions. [2021-05-22 02:09:09,598 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24530 transitions. Word has length 29 [2021-05-22 02:09:09,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:09,598 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24530 transitions. [2021-05-22 02:09:09,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:09,599 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24530 transitions. [2021-05-22 02:09:09,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:09,607 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:09,607 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:09,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1415 [2021-05-22 02:09:09,607 INFO L430 AbstractCegarLoop]: === Iteration 1417 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:09,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:09,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1842836699, now seen corresponding path program 1412 times [2021-05-22 02:09:09,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:09,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855814028] [2021-05-22 02:09:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:09,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:09,714 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:09,714 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855814028] [2021-05-22 02:09:09,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855814028] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:09,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:09,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:09,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375984529] [2021-05-22 02:09:09,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:09,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:09,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:09,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:09,714 INFO L87 Difference]: Start difference. First operand 5187 states and 24530 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:09,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:09,828 INFO L93 Difference]: Finished difference Result 11360 states and 50827 transitions. [2021-05-22 02:09:09,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:09,828 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:09,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:09,856 INFO L225 Difference]: With dead ends: 11360 [2021-05-22 02:09:09,857 INFO L226 Difference]: Without dead ends: 10837 [2021-05-22 02:09:09,857 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:09,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10837 states. [2021-05-22 02:09:10,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10837 to 5139. [2021-05-22 02:09:10,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.735305566368237) internal successors, (24330), 5138 states have internal predecessors, (24330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:10,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24330 transitions. [2021-05-22 02:09:10,097 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24330 transitions. Word has length 29 [2021-05-22 02:09:10,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:10,098 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24330 transitions. [2021-05-22 02:09:10,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:10,098 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24330 transitions. [2021-05-22 02:09:10,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:10,106 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:10,106 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:10,106 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1416 [2021-05-22 02:09:10,106 INFO L430 AbstractCegarLoop]: === Iteration 1418 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:10,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:10,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1265914917, now seen corresponding path program 1413 times [2021-05-22 02:09:10,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:10,107 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004666053] [2021-05-22 02:09:10,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:10,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:10,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:10,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004666053] [2021-05-22 02:09:10,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004666053] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:10,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:10,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:10,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447863273] [2021-05-22 02:09:10,203 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:10,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:10,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:10,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:10,204 INFO L87 Difference]: Start difference. First operand 5139 states and 24330 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:10,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:10,298 INFO L93 Difference]: Finished difference Result 11192 states and 50147 transitions. [2021-05-22 02:09:10,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:10,298 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:10,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:10,324 INFO L225 Difference]: With dead ends: 11192 [2021-05-22 02:09:10,325 INFO L226 Difference]: Without dead ends: 10777 [2021-05-22 02:09:10,325 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 103.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:10,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10777 states. [2021-05-22 02:09:10,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10777 to 5187. [2021-05-22 02:09:10,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 4.725414577709217) internal successors, (24506), 5186 states have internal predecessors, (24506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:10,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 24506 transitions. [2021-05-22 02:09:10,561 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 24506 transitions. Word has length 29 [2021-05-22 02:09:10,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:10,561 INFO L482 AbstractCegarLoop]: Abstraction has 5187 states and 24506 transitions. [2021-05-22 02:09:10,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:10,561 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 24506 transitions. [2021-05-22 02:09:10,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:10,569 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:10,569 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:10,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1417 [2021-05-22 02:09:10,569 INFO L430 AbstractCegarLoop]: === Iteration 1419 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:10,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:10,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1492452315, now seen corresponding path program 1414 times [2021-05-22 02:09:10,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:10,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827124972] [2021-05-22 02:09:10,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:10,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:10,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827124972] [2021-05-22 02:09:10,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827124972] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:10,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:10,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:10,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938948702] [2021-05-22 02:09:10,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:10,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:10,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:10,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:10,667 INFO L87 Difference]: Start difference. First operand 5187 states and 24506 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:10,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:10,775 INFO L93 Difference]: Finished difference Result 10920 states and 49138 transitions. [2021-05-22 02:09:10,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:10,775 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:10,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:10,802 INFO L225 Difference]: With dead ends: 10920 [2021-05-22 02:09:10,802 INFO L226 Difference]: Without dead ends: 10409 [2021-05-22 02:09:10,803 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:10,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10409 states. [2021-05-22 02:09:11,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10409 to 5139. [2021-05-22 02:09:11,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 5138 states have (on average 4.730634488127676) internal successors, (24306), 5138 states have internal predecessors, (24306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:11,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 24306 transitions. [2021-05-22 02:09:11,039 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 24306 transitions. Word has length 29 [2021-05-22 02:09:11,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:11,039 INFO L482 AbstractCegarLoop]: Abstraction has 5139 states and 24306 transitions. [2021-05-22 02:09:11,039 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:11,039 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 24306 transitions. [2021-05-22 02:09:11,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:11,047 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:11,047 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:11,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1418 [2021-05-22 02:09:11,047 INFO L430 AbstractCegarLoop]: === Iteration 1420 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:11,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:11,048 INFO L82 PathProgramCache]: Analyzing trace with hash 409166851, now seen corresponding path program 1415 times [2021-05-22 02:09:11,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:11,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089096739] [2021-05-22 02:09:11,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:11,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:11,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:11,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089096739] [2021-05-22 02:09:11,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089096739] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:11,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:11,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:11,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246442669] [2021-05-22 02:09:11,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:11,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:11,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:11,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:11,145 INFO L87 Difference]: Start difference. First operand 5139 states and 24306 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:11,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:11,257 INFO L93 Difference]: Finished difference Result 11276 states and 50511 transitions. [2021-05-22 02:09:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:11,257 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:11,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:11,286 INFO L225 Difference]: With dead ends: 11276 [2021-05-22 02:09:11,286 INFO L226 Difference]: Without dead ends: 10801 [2021-05-22 02:09:11,286 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:11,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10801 states. [2021-05-22 02:09:11,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10801 to 5211. [2021-05-22 02:09:11,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5211 states, 5210 states have (on average 4.718234165067178) internal successors, (24582), 5210 states have internal predecessors, (24582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:11,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5211 states to 5211 states and 24582 transitions. [2021-05-22 02:09:11,525 INFO L78 Accepts]: Start accepts. Automaton has 5211 states and 24582 transitions. Word has length 29 [2021-05-22 02:09:11,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:11,525 INFO L482 AbstractCegarLoop]: Abstraction has 5211 states and 24582 transitions. [2021-05-22 02:09:11,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:11,525 INFO L276 IsEmpty]: Start isEmpty. Operand 5211 states and 24582 transitions. [2021-05-22 02:09:11,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:11,534 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:11,534 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:11,534 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1419 [2021-05-22 02:09:11,534 INFO L430 AbstractCegarLoop]: === Iteration 1421 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:11,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:11,534 INFO L82 PathProgramCache]: Analyzing trace with hash -764792859, now seen corresponding path program 1416 times [2021-05-22 02:09:11,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:11,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710734202] [2021-05-22 02:09:11,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:11,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:11,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:11,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710734202] [2021-05-22 02:09:11,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710734202] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:11,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:11,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:11,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637955799] [2021-05-22 02:09:11,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:11,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:11,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:11,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:11,627 INFO L87 Difference]: Start difference. First operand 5211 states and 24582 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:11,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:11,740 INFO L93 Difference]: Finished difference Result 10944 states and 49214 transitions. [2021-05-22 02:09:11,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:11,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:11,766 INFO L225 Difference]: With dead ends: 10944 [2021-05-22 02:09:11,766 INFO L226 Difference]: Without dead ends: 10365 [2021-05-22 02:09:11,766 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:11,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10365 states. [2021-05-22 02:09:11,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10365 to 5095. [2021-05-22 02:09:11,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5095 states, 5094 states have (on average 4.744405182567727) internal successors, (24168), 5094 states have internal predecessors, (24168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:11,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5095 states to 5095 states and 24168 transitions. [2021-05-22 02:09:11,989 INFO L78 Accepts]: Start accepts. Automaton has 5095 states and 24168 transitions. Word has length 29 [2021-05-22 02:09:11,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:11,989 INFO L482 AbstractCegarLoop]: Abstraction has 5095 states and 24168 transitions. [2021-05-22 02:09:11,989 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:11,989 INFO L276 IsEmpty]: Start isEmpty. Operand 5095 states and 24168 transitions. [2021-05-22 02:09:11,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:11,997 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:11,997 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:11,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1420 [2021-05-22 02:09:11,997 INFO L430 AbstractCegarLoop]: === Iteration 1422 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:11,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:11,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1753225001, now seen corresponding path program 1417 times [2021-05-22 02:09:11,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:11,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772217272] [2021-05-22 02:09:11,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:12,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:12,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772217272] [2021-05-22 02:09:12,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772217272] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:12,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:12,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:12,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201708703] [2021-05-22 02:09:12,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:12,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:12,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:12,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:12,108 INFO L87 Difference]: Start difference. First operand 5095 states and 24168 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:12,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:12,227 INFO L93 Difference]: Finished difference Result 11231 states and 50333 transitions. [2021-05-22 02:09:12,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:12,227 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:12,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:12,254 INFO L225 Difference]: With dead ends: 11231 [2021-05-22 02:09:12,254 INFO L226 Difference]: Without dead ends: 10754 [2021-05-22 02:09:12,255 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:12,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10754 states. [2021-05-22 02:09:12,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10754 to 5179. [2021-05-22 02:09:12,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.738509076863654) internal successors, (24536), 5178 states have internal predecessors, (24536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24536 transitions. [2021-05-22 02:09:12,482 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24536 transitions. Word has length 29 [2021-05-22 02:09:12,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:12,482 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24536 transitions. [2021-05-22 02:09:12,482 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:12,482 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24536 transitions. [2021-05-22 02:09:12,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:12,490 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:12,490 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:12,490 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1421 [2021-05-22 02:09:12,490 INFO L430 AbstractCegarLoop]: === Iteration 1423 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:12,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:12,491 INFO L82 PathProgramCache]: Analyzing trace with hash 906428039, now seen corresponding path program 1418 times [2021-05-22 02:09:12,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:12,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126383125] [2021-05-22 02:09:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:12,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:12,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126383125] [2021-05-22 02:09:12,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126383125] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:12,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:12,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:12,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291512247] [2021-05-22 02:09:12,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:12,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:12,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:12,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:12,602 INFO L87 Difference]: Start difference. First operand 5179 states and 24536 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:12,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:12,697 INFO L93 Difference]: Finished difference Result 11169 states and 50016 transitions. [2021-05-22 02:09:12,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:12,698 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:12,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:12,724 INFO L225 Difference]: With dead ends: 11169 [2021-05-22 02:09:12,724 INFO L226 Difference]: Without dead ends: 10706 [2021-05-22 02:09:12,724 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:12,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10706 states. [2021-05-22 02:09:12,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10706 to 5131. [2021-05-22 02:09:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.743859649122807) internal successors, (24336), 5130 states have internal predecessors, (24336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:12,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24336 transitions. [2021-05-22 02:09:12,963 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24336 transitions. Word has length 29 [2021-05-22 02:09:12,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:12,963 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24336 transitions. [2021-05-22 02:09:12,963 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:12,963 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24336 transitions. [2021-05-22 02:09:12,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:12,971 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:12,971 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:12,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1422 [2021-05-22 02:09:12,972 INFO L430 AbstractCegarLoop]: === Iteration 1424 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:12,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:12,972 INFO L82 PathProgramCache]: Analyzing trace with hash -269836537, now seen corresponding path program 1419 times [2021-05-22 02:09:12,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:12,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897017710] [2021-05-22 02:09:12,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:13,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:13,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897017710] [2021-05-22 02:09:13,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897017710] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:13,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:13,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:13,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956448734] [2021-05-22 02:09:13,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:13,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:13,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:13,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:13,078 INFO L87 Difference]: Start difference. First operand 5131 states and 24336 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:13,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:13,189 INFO L93 Difference]: Finished difference Result 11321 states and 50720 transitions. [2021-05-22 02:09:13,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:13,190 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:13,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:13,217 INFO L225 Difference]: With dead ends: 11321 [2021-05-22 02:09:13,217 INFO L226 Difference]: Without dead ends: 10844 [2021-05-22 02:09:13,217 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:13,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10844 states. [2021-05-22 02:09:13,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10844 to 5209. [2021-05-22 02:09:13,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.729070660522273) internal successors, (24629), 5208 states have internal predecessors, (24629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:13,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24629 transitions. [2021-05-22 02:09:13,454 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24629 transitions. Word has length 29 [2021-05-22 02:09:13,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:13,454 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24629 transitions. [2021-05-22 02:09:13,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:13,454 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24629 transitions. [2021-05-22 02:09:13,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:13,463 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:13,463 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:13,463 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1423 [2021-05-22 02:09:13,463 INFO L430 AbstractCegarLoop]: === Iteration 1425 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:13,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:13,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1065863417, now seen corresponding path program 1420 times [2021-05-22 02:09:13,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:13,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409581630] [2021-05-22 02:09:13,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:13,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:13,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409581630] [2021-05-22 02:09:13,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409581630] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:13,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:13,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:13,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627837805] [2021-05-22 02:09:13,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:13,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:13,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:13,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:13,622 INFO L87 Difference]: Start difference. First operand 5209 states and 24629 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:13,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:13,737 INFO L93 Difference]: Finished difference Result 11319 states and 50637 transitions. [2021-05-22 02:09:13,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:13,738 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:13,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:13,765 INFO L225 Difference]: With dead ends: 11319 [2021-05-22 02:09:13,765 INFO L226 Difference]: Without dead ends: 10766 [2021-05-22 02:09:13,765 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 180.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:13,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10766 states. [2021-05-22 02:09:13,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10766 to 5131. [2021-05-22 02:09:13,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.739181286549708) internal successors, (24312), 5130 states have internal predecessors, (24312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:14,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24312 transitions. [2021-05-22 02:09:14,009 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24312 transitions. Word has length 29 [2021-05-22 02:09:14,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:14,009 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24312 transitions. [2021-05-22 02:09:14,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:14,009 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24312 transitions. [2021-05-22 02:09:14,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:14,017 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:14,017 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:14,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1424 [2021-05-22 02:09:14,017 INFO L430 AbstractCegarLoop]: === Iteration 1426 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:14,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:14,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1126584603, now seen corresponding path program 1421 times [2021-05-22 02:09:14,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:14,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112750821] [2021-05-22 02:09:14,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:14,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:14,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:14,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112750821] [2021-05-22 02:09:14,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112750821] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:14,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:14,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:14,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197972370] [2021-05-22 02:09:14,129 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:14,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:14,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:14,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:14,130 INFO L87 Difference]: Start difference. First operand 5131 states and 24312 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:14,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:14,236 INFO L93 Difference]: Finished difference Result 11167 states and 50011 transitions. [2021-05-22 02:09:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:14,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:14,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:14,265 INFO L225 Difference]: With dead ends: 11167 [2021-05-22 02:09:14,265 INFO L226 Difference]: Without dead ends: 10752 [2021-05-22 02:09:14,265 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:14,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10752 states. [2021-05-22 02:09:14,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10752 to 5179. [2021-05-22 02:09:14,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.7292390884511395) internal successors, (24488), 5178 states have internal predecessors, (24488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:14,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24488 transitions. [2021-05-22 02:09:14,501 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24488 transitions. Word has length 29 [2021-05-22 02:09:14,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:14,501 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24488 transitions. [2021-05-22 02:09:14,501 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:14,501 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24488 transitions. [2021-05-22 02:09:14,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:14,510 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:14,510 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:14,510 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1425 [2021-05-22 02:09:14,510 INFO L430 AbstractCegarLoop]: === Iteration 1427 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:14,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:14,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1607486649, now seen corresponding path program 1422 times [2021-05-22 02:09:14,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:14,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909144239] [2021-05-22 02:09:14,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:14,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:14,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:14,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909144239] [2021-05-22 02:09:14,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909144239] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:14,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:14,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:14,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973986362] [2021-05-22 02:09:14,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:14,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:14,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:14,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:14,626 INFO L87 Difference]: Start difference. First operand 5179 states and 24488 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:14,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:14,749 INFO L93 Difference]: Finished difference Result 11227 states and 50227 transitions. [2021-05-22 02:09:14,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:14,750 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:14,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:14,776 INFO L225 Difference]: With dead ends: 11227 [2021-05-22 02:09:14,777 INFO L226 Difference]: Without dead ends: 10680 [2021-05-22 02:09:14,777 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:14,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10680 states. [2021-05-22 02:09:14,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10680 to 5107. [2021-05-22 02:09:14,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5107 states, 5106 states have (on average 4.744222483352918) internal successors, (24224), 5106 states have internal predecessors, (24224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:15,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 24224 transitions. [2021-05-22 02:09:15,010 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 24224 transitions. Word has length 29 [2021-05-22 02:09:15,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:15,010 INFO L482 AbstractCegarLoop]: Abstraction has 5107 states and 24224 transitions. [2021-05-22 02:09:15,010 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:15,010 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 24224 transitions. [2021-05-22 02:09:15,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:15,018 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:15,018 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:15,018 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1426 [2021-05-22 02:09:15,018 INFO L430 AbstractCegarLoop]: === Iteration 1428 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:15,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:15,019 INFO L82 PathProgramCache]: Analyzing trace with hash -2056771577, now seen corresponding path program 1423 times [2021-05-22 02:09:15,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:15,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214195860] [2021-05-22 02:09:15,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:15,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:15,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:15,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214195860] [2021-05-22 02:09:15,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214195860] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:15,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:15,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:15,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733622524] [2021-05-22 02:09:15,129 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:15,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:15,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:15,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:15,129 INFO L87 Difference]: Start difference. First operand 5107 states and 24224 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:15,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:15,252 INFO L93 Difference]: Finished difference Result 11165 states and 50034 transitions. [2021-05-22 02:09:15,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:15,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:15,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:15,280 INFO L225 Difference]: With dead ends: 11165 [2021-05-22 02:09:15,281 INFO L226 Difference]: Without dead ends: 10688 [2021-05-22 02:09:15,281 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:15,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10688 states. [2021-05-22 02:09:15,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10688 to 5179. [2021-05-22 02:09:15,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.736191579760526) internal successors, (24524), 5178 states have internal predecessors, (24524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:15,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24524 transitions. [2021-05-22 02:09:15,520 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24524 transitions. Word has length 29 [2021-05-22 02:09:15,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:15,520 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24524 transitions. [2021-05-22 02:09:15,520 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:15,520 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24524 transitions. [2021-05-22 02:09:15,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:15,529 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:15,529 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:15,529 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1427 [2021-05-22 02:09:15,529 INFO L430 AbstractCegarLoop]: === Iteration 1429 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:15,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:15,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1391398757, now seen corresponding path program 1424 times [2021-05-22 02:09:15,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:15,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540704230] [2021-05-22 02:09:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:15,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:15,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:15,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540704230] [2021-05-22 02:09:15,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540704230] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:15,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:15,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:15,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551808456] [2021-05-22 02:09:15,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:15,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:15,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:15,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:15,641 INFO L87 Difference]: Start difference. First operand 5179 states and 24524 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:15,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:15,732 INFO L93 Difference]: Finished difference Result 11103 states and 49717 transitions. [2021-05-22 02:09:15,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:15,732 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:15,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:15,758 INFO L225 Difference]: With dead ends: 11103 [2021-05-22 02:09:15,758 INFO L226 Difference]: Without dead ends: 10640 [2021-05-22 02:09:15,758 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:15,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10640 states. [2021-05-22 02:09:15,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10640 to 5131. [2021-05-22 02:09:15,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.741520467836257) internal successors, (24324), 5130 states have internal predecessors, (24324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:15,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24324 transitions. [2021-05-22 02:09:15,997 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24324 transitions. Word has length 29 [2021-05-22 02:09:15,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:15,997 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24324 transitions. [2021-05-22 02:09:15,997 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:15,998 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24324 transitions. [2021-05-22 02:09:16,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:16,006 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:16,006 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:16,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1428 [2021-05-22 02:09:16,006 INFO L430 AbstractCegarLoop]: === Iteration 1430 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:16,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:16,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1442107399, now seen corresponding path program 1425 times [2021-05-22 02:09:16,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:16,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466427560] [2021-05-22 02:09:16,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:16,121 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:16,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466427560] [2021-05-22 02:09:16,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466427560] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:16,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:16,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:16,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523078560] [2021-05-22 02:09:16,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:16,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:16,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:16,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:16,121 INFO L87 Difference]: Start difference. First operand 5131 states and 24324 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:16,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:16,231 INFO L93 Difference]: Finished difference Result 11079 states and 49689 transitions. [2021-05-22 02:09:16,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:16,231 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:16,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:16,261 INFO L225 Difference]: With dead ends: 11079 [2021-05-22 02:09:16,261 INFO L226 Difference]: Without dead ends: 10602 [2021-05-22 02:09:16,261 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:16,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10602 states. [2021-05-22 02:09:16,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10602 to 5203. [2021-05-22 02:09:16,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.728950403690888) internal successors, (24600), 5202 states have internal predecessors, (24600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:16,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24600 transitions. [2021-05-22 02:09:16,504 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24600 transitions. Word has length 29 [2021-05-22 02:09:16,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:16,504 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24600 transitions. [2021-05-22 02:09:16,504 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:16,504 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24600 transitions. [2021-05-22 02:09:16,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:16,513 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:16,513 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:16,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1429 [2021-05-22 02:09:16,513 INFO L430 AbstractCegarLoop]: === Iteration 1431 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:16,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:16,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1016367111, now seen corresponding path program 1426 times [2021-05-22 02:09:16,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:16,513 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933862511] [2021-05-22 02:09:16,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:16,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:16,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933862511] [2021-05-22 02:09:16,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933862511] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:16,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:16,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:16,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901469890] [2021-05-22 02:09:16,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:16,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:16,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:16,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:16,628 INFO L87 Difference]: Start difference. First operand 5203 states and 24600 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:16,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:16,738 INFO L93 Difference]: Finished difference Result 10745 states and 48387 transitions. [2021-05-22 02:09:16,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:16,738 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:16,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:16,765 INFO L225 Difference]: With dead ends: 10745 [2021-05-22 02:09:16,765 INFO L226 Difference]: Without dead ends: 10210 [2021-05-22 02:09:16,765 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:16,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10210 states. [2021-05-22 02:09:16,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10210 to 5131. [2021-05-22 02:09:16,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.7368421052631575) internal successors, (24300), 5130 states have internal predecessors, (24300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:17,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24300 transitions. [2021-05-22 02:09:17,002 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24300 transitions. Word has length 29 [2021-05-22 02:09:17,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:17,002 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24300 transitions. [2021-05-22 02:09:17,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:17,002 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24300 transitions. [2021-05-22 02:09:17,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:17,010 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:17,010 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:17,011 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1430 [2021-05-22 02:09:17,011 INFO L430 AbstractCegarLoop]: === Iteration 1432 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:17,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:17,011 INFO L82 PathProgramCache]: Analyzing trace with hash 585359333, now seen corresponding path program 1427 times [2021-05-22 02:09:17,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:17,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550867567] [2021-05-22 02:09:17,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:17,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:17,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:17,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550867567] [2021-05-22 02:09:17,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550867567] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:17,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:17,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:17,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354283333] [2021-05-22 02:09:17,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:17,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:17,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:17,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:17,114 INFO L87 Difference]: Start difference. First operand 5131 states and 24300 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:17,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:17,206 INFO L93 Difference]: Finished difference Result 10993 states and 49272 transitions. [2021-05-22 02:09:17,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:17,207 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:17,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:17,234 INFO L225 Difference]: With dead ends: 10993 [2021-05-22 02:09:17,234 INFO L226 Difference]: Without dead ends: 10578 [2021-05-22 02:09:17,234 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 110.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:17,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10578 states. [2021-05-22 02:09:17,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10578 to 5179. [2021-05-22 02:09:17,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.7269215913480105) internal successors, (24476), 5178 states have internal predecessors, (24476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:17,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24476 transitions. [2021-05-22 02:09:17,470 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24476 transitions. Word has length 29 [2021-05-22 02:09:17,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:17,471 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24476 transitions. [2021-05-22 02:09:17,471 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:17,471 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24476 transitions. [2021-05-22 02:09:17,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:17,479 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:17,479 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:17,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1431 [2021-05-22 02:09:17,479 INFO L430 AbstractCegarLoop]: === Iteration 1433 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:17,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:17,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1281658041, now seen corresponding path program 1428 times [2021-05-22 02:09:17,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:17,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514761026] [2021-05-22 02:09:17,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:17,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:17,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:17,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514761026] [2021-05-22 02:09:17,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514761026] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:17,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:17,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:17,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209724713] [2021-05-22 02:09:17,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:17,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:17,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:17,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:17,584 INFO L87 Difference]: Start difference. First operand 5179 states and 24476 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:17,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:17,689 INFO L93 Difference]: Finished difference Result 10721 states and 48263 transitions. [2021-05-22 02:09:17,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:17,689 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:17,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:17,715 INFO L225 Difference]: With dead ends: 10721 [2021-05-22 02:09:17,715 INFO L226 Difference]: Without dead ends: 10186 [2021-05-22 02:09:17,715 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:17,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10186 states. [2021-05-22 02:09:17,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10186 to 5107. [2021-05-22 02:09:17,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5107 states, 5106 states have (on average 4.741872307089698) internal successors, (24212), 5106 states have internal predecessors, (24212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:17,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 24212 transitions. [2021-05-22 02:09:17,949 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 24212 transitions. Word has length 29 [2021-05-22 02:09:17,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:17,949 INFO L482 AbstractCegarLoop]: Abstraction has 5107 states and 24212 transitions. [2021-05-22 02:09:17,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:17,949 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 24212 transitions. [2021-05-22 02:09:17,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:17,957 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:17,957 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:17,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1432 [2021-05-22 02:09:17,958 INFO L430 AbstractCegarLoop]: === Iteration 1434 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:17,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:17,958 INFO L82 PathProgramCache]: Analyzing trace with hash -757942171, now seen corresponding path program 1429 times [2021-05-22 02:09:17,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:17,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751110006] [2021-05-22 02:09:17,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:18,054 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:18,054 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751110006] [2021-05-22 02:09:18,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751110006] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:18,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:18,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:18,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874549626] [2021-05-22 02:09:18,054 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:18,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:18,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:18,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:18,055 INFO L87 Difference]: Start difference. First operand 5107 states and 24212 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:18,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:18,166 INFO L93 Difference]: Finished difference Result 11351 states and 50889 transitions. [2021-05-22 02:09:18,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:18,166 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:18,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:18,194 INFO L225 Difference]: With dead ends: 11351 [2021-05-22 02:09:18,194 INFO L226 Difference]: Without dead ends: 10874 [2021-05-22 02:09:18,194 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:18,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10874 states. [2021-05-22 02:09:18,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10874 to 5221. [2021-05-22 02:09:18,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5221 states, 5220 states have (on average 4.731226053639847) internal successors, (24697), 5220 states have internal predecessors, (24697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:18,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 24697 transitions. [2021-05-22 02:09:18,436 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 24697 transitions. Word has length 29 [2021-05-22 02:09:18,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:18,436 INFO L482 AbstractCegarLoop]: Abstraction has 5221 states and 24697 transitions. [2021-05-22 02:09:18,436 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:18,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 24697 transitions. [2021-05-22 02:09:18,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:18,445 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:18,445 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:18,445 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1433 [2021-05-22 02:09:18,445 INFO L430 AbstractCegarLoop]: === Iteration 1435 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:18,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:18,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1553969051, now seen corresponding path program 1430 times [2021-05-22 02:09:18,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:18,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136693896] [2021-05-22 02:09:18,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:18,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:18,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:18,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136693896] [2021-05-22 02:09:18,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136693896] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:18,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:18,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:18,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804969942] [2021-05-22 02:09:18,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:18,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:18,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:18,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:18,542 INFO L87 Difference]: Start difference. First operand 5221 states and 24697 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:18,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:18,650 INFO L93 Difference]: Finished difference Result 11349 states and 50806 transitions. [2021-05-22 02:09:18,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:18,650 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:18,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:18,677 INFO L225 Difference]: With dead ends: 11349 [2021-05-22 02:09:18,678 INFO L226 Difference]: Without dead ends: 10796 [2021-05-22 02:09:18,678 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:18,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10796 states. [2021-05-22 02:09:18,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10796 to 5143. [2021-05-22 02:09:18,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.73901205756515) internal successors, (24368), 5142 states have internal predecessors, (24368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:18,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24368 transitions. [2021-05-22 02:09:18,913 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24368 transitions. Word has length 29 [2021-05-22 02:09:18,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:18,913 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24368 transitions. [2021-05-22 02:09:18,913 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:18,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24368 transitions. [2021-05-22 02:09:18,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:18,922 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:18,922 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:18,922 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1434 [2021-05-22 02:09:18,922 INFO L430 AbstractCegarLoop]: === Iteration 1436 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:18,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:18,922 INFO L82 PathProgramCache]: Analyzing trace with hash 643175367, now seen corresponding path program 1431 times [2021-05-22 02:09:18,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:18,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589530134] [2021-05-22 02:09:18,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:19,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:19,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:19,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589530134] [2021-05-22 02:09:19,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589530134] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:19,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:19,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:19,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480681693] [2021-05-22 02:09:19,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:19,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:19,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:19,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:19,028 INFO L87 Difference]: Start difference. First operand 5143 states and 24368 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:19,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:19,136 INFO L93 Difference]: Finished difference Result 11175 states and 50121 transitions. [2021-05-22 02:09:19,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:19,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:19,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:19,165 INFO L225 Difference]: With dead ends: 11175 [2021-05-22 02:09:19,165 INFO L226 Difference]: Without dead ends: 10698 [2021-05-22 02:09:19,165 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:19,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10698 states. [2021-05-22 02:09:19,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10698 to 5215. [2021-05-22 02:09:19,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5214 states have (on average 4.7265055619486) internal successors, (24644), 5214 states have internal predecessors, (24644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 24644 transitions. [2021-05-22 02:09:19,405 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 24644 transitions. Word has length 29 [2021-05-22 02:09:19,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:19,405 INFO L482 AbstractCegarLoop]: Abstraction has 5215 states and 24644 transitions. [2021-05-22 02:09:19,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:19,405 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 24644 transitions. [2021-05-22 02:09:19,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:19,414 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:19,414 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:19,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1435 [2021-05-22 02:09:19,414 INFO L430 AbstractCegarLoop]: === Iteration 1437 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:19,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:19,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1820553115, now seen corresponding path program 1432 times [2021-05-22 02:09:19,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:19,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860477151] [2021-05-22 02:09:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:19,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:19,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:19,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860477151] [2021-05-22 02:09:19,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860477151] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:19,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:19,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:19,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602079394] [2021-05-22 02:09:19,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:19,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:19,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:19,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:19,519 INFO L87 Difference]: Start difference. First operand 5215 states and 24644 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:19,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:19,628 INFO L93 Difference]: Finished difference Result 10841 states and 48819 transitions. [2021-05-22 02:09:19,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:19,628 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:19,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:19,655 INFO L225 Difference]: With dead ends: 10841 [2021-05-22 02:09:19,655 INFO L226 Difference]: Without dead ends: 10306 [2021-05-22 02:09:19,656 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:19,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10306 states. [2021-05-22 02:09:19,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10306 to 5143. [2021-05-22 02:09:19,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.732010890704006) internal successors, (24332), 5142 states have internal predecessors, (24332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:19,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24332 transitions. [2021-05-22 02:09:19,887 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24332 transitions. Word has length 29 [2021-05-22 02:09:19,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:19,887 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24332 transitions. [2021-05-22 02:09:19,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:19,887 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24332 transitions. [2021-05-22 02:09:19,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:19,895 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:19,895 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:19,895 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1436 [2021-05-22 02:09:19,896 INFO L430 AbstractCegarLoop]: === Iteration 1438 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:19,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:19,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1626474597, now seen corresponding path program 1433 times [2021-05-22 02:09:19,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:19,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815408822] [2021-05-22 02:09:19,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:19,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:19,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815408822] [2021-05-22 02:09:19,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815408822] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:19,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:19,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:19,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896929277] [2021-05-22 02:09:19,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:19,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:19,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:19,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:19,992 INFO L87 Difference]: Start difference. First operand 5143 states and 24332 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:20,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:20,102 INFO L93 Difference]: Finished difference Result 11173 states and 50080 transitions. [2021-05-22 02:09:20,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:20,102 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:20,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:20,131 INFO L225 Difference]: With dead ends: 11173 [2021-05-22 02:09:20,131 INFO L226 Difference]: Without dead ends: 10698 [2021-05-22 02:09:20,131 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:20,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10698 states. [2021-05-22 02:09:20,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10698 to 5215. [2021-05-22 02:09:20,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5214 states have (on average 4.719601074031454) internal successors, (24608), 5214 states have internal predecessors, (24608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:20,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 24608 transitions. [2021-05-22 02:09:20,373 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 24608 transitions. Word has length 29 [2021-05-22 02:09:20,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:20,373 INFO L482 AbstractCegarLoop]: Abstraction has 5215 states and 24608 transitions. [2021-05-22 02:09:20,373 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:20,373 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 24608 transitions. [2021-05-22 02:09:20,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:20,381 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:20,381 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:20,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1437 [2021-05-22 02:09:20,381 INFO L430 AbstractCegarLoop]: === Iteration 1439 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:20,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:20,381 INFO L82 PathProgramCache]: Analyzing trace with hash 452514887, now seen corresponding path program 1434 times [2021-05-22 02:09:20,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:20,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740971922] [2021-05-22 02:09:20,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:20,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:20,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740971922] [2021-05-22 02:09:20,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740971922] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:20,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:20,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:20,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509025522] [2021-05-22 02:09:20,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:20,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:20,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:20,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:20,477 INFO L87 Difference]: Start difference. First operand 5215 states and 24608 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:20,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:20,591 INFO L93 Difference]: Finished difference Result 10841 states and 48783 transitions. [2021-05-22 02:09:20,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:20,592 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:20,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:20,618 INFO L225 Difference]: With dead ends: 10841 [2021-05-22 02:09:20,618 INFO L226 Difference]: Without dead ends: 10270 [2021-05-22 02:09:20,618 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:20,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10270 states. [2021-05-22 02:09:20,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10270 to 5107. [2021-05-22 02:09:20,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5107 states, 5106 states have (on average 4.7395221308264786) internal successors, (24200), 5106 states have internal predecessors, (24200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:20,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 24200 transitions. [2021-05-22 02:09:20,857 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 24200 transitions. Word has length 29 [2021-05-22 02:09:20,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:20,857 INFO L482 AbstractCegarLoop]: Abstraction has 5107 states and 24200 transitions. [2021-05-22 02:09:20,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:20,857 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 24200 transitions. [2021-05-22 02:09:20,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:20,865 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:20,865 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:20,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1438 [2021-05-22 02:09:20,865 INFO L430 AbstractCegarLoop]: === Iteration 1440 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:20,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:20,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1707200707, now seen corresponding path program 1435 times [2021-05-22 02:09:20,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:20,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691185054] [2021-05-22 02:09:20,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:20,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:20,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:20,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691185054] [2021-05-22 02:09:20,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691185054] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:20,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:20,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:20,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357254283] [2021-05-22 02:09:20,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:20,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:20,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:20,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:20,972 INFO L87 Difference]: Start difference. First operand 5107 states and 24200 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:21,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:21,076 INFO L93 Difference]: Finished difference Result 11099 states and 49731 transitions. [2021-05-22 02:09:21,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:21,076 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:21,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:21,103 INFO L225 Difference]: With dead ends: 11099 [2021-05-22 02:09:21,103 INFO L226 Difference]: Without dead ends: 10684 [2021-05-22 02:09:21,104 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 111.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:21,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10684 states. [2021-05-22 02:09:21,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10684 to 5179. [2021-05-22 02:09:21,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.731556585554268) internal successors, (24500), 5178 states have internal predecessors, (24500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:21,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24500 transitions. [2021-05-22 02:09:21,334 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24500 transitions. Word has length 29 [2021-05-22 02:09:21,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:21,334 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24500 transitions. [2021-05-22 02:09:21,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:21,335 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24500 transitions. [2021-05-22 02:09:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:21,342 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:21,343 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:21,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1439 [2021-05-22 02:09:21,343 INFO L430 AbstractCegarLoop]: === Iteration 1441 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:21,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:21,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1226298661, now seen corresponding path program 1436 times [2021-05-22 02:09:21,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:21,343 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257374512] [2021-05-22 02:09:21,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:21,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:21,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257374512] [2021-05-22 02:09:21,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257374512] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:21,447 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:21,447 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:21,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423977024] [2021-05-22 02:09:21,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:21,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:21,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:21,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:21,448 INFO L87 Difference]: Start difference. First operand 5179 states and 24500 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:21,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:21,558 INFO L93 Difference]: Finished difference Result 11159 states and 49947 transitions. [2021-05-22 02:09:21,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:21,558 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:21,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:21,584 INFO L225 Difference]: With dead ends: 11159 [2021-05-22 02:09:21,584 INFO L226 Difference]: Without dead ends: 10636 [2021-05-22 02:09:21,584 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10636 states. [2021-05-22 02:09:21,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10636 to 5131. [2021-05-22 02:09:21,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.7368421052631575) internal successors, (24300), 5130 states have internal predecessors, (24300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:21,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24300 transitions. [2021-05-22 02:09:21,816 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24300 transitions. Word has length 29 [2021-05-22 02:09:21,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:21,816 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24300 transitions. [2021-05-22 02:09:21,816 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:21,816 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24300 transitions. [2021-05-22 02:09:21,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:21,825 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:21,825 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:21,825 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1440 [2021-05-22 02:09:21,825 INFO L430 AbstractCegarLoop]: === Iteration 1442 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:21,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:21,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1186649051, now seen corresponding path program 1437 times [2021-05-22 02:09:21,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:21,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947635707] [2021-05-22 02:09:21,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:21,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:21,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:21,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947635707] [2021-05-22 02:09:21,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947635707] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:21,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:21,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:21,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520082594] [2021-05-22 02:09:21,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:21,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:21,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:21,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:21,920 INFO L87 Difference]: Start difference. First operand 5131 states and 24300 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:22,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:22,011 INFO L93 Difference]: Finished difference Result 10991 states and 49267 transitions. [2021-05-22 02:09:22,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:22,011 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:22,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:22,038 INFO L225 Difference]: With dead ends: 10991 [2021-05-22 02:09:22,038 INFO L226 Difference]: Without dead ends: 10576 [2021-05-22 02:09:22,038 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 100.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:22,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10576 states. [2021-05-22 02:09:22,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10576 to 5179. [2021-05-22 02:09:22,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 5178 states have (on average 4.7269215913480105) internal successors, (24476), 5178 states have internal predecessors, (24476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:22,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 24476 transitions. [2021-05-22 02:09:22,274 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 24476 transitions. Word has length 29 [2021-05-22 02:09:22,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:22,274 INFO L482 AbstractCegarLoop]: Abstraction has 5179 states and 24476 transitions. [2021-05-22 02:09:22,274 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:22,274 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 24476 transitions. [2021-05-22 02:09:22,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:22,284 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:22,284 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:22,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1441 [2021-05-22 02:09:22,284 INFO L430 AbstractCegarLoop]: === Iteration 1443 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:22,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:22,284 INFO L82 PathProgramCache]: Analyzing trace with hash -796687323, now seen corresponding path program 1438 times [2021-05-22 02:09:22,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:22,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482498111] [2021-05-22 02:09:22,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:22,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:22,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482498111] [2021-05-22 02:09:22,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482498111] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:22,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:22,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:22,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970076469] [2021-05-22 02:09:22,382 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:22,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:22,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:22,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:22,383 INFO L87 Difference]: Start difference. First operand 5179 states and 24476 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:22,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:22,490 INFO L93 Difference]: Finished difference Result 10719 states and 48258 transitions. [2021-05-22 02:09:22,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:22,490 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:22,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:22,515 INFO L225 Difference]: With dead ends: 10719 [2021-05-22 02:09:22,515 INFO L226 Difference]: Without dead ends: 10208 [2021-05-22 02:09:22,515 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:22,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10208 states. [2021-05-22 02:09:22,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10208 to 5131. [2021-05-22 02:09:22,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 5130 states have (on average 4.732163742690059) internal successors, (24276), 5130 states have internal predecessors, (24276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:22,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 24276 transitions. [2021-05-22 02:09:22,739 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 24276 transitions. Word has length 29 [2021-05-22 02:09:22,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:22,739 INFO L482 AbstractCegarLoop]: Abstraction has 5131 states and 24276 transitions. [2021-05-22 02:09:22,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:22,739 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 24276 transitions. [2021-05-22 02:09:22,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:22,747 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:22,747 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:22,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1442 [2021-05-22 02:09:22,747 INFO L430 AbstractCegarLoop]: === Iteration 1444 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:22,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:22,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1976035321, now seen corresponding path program 1439 times [2021-05-22 02:09:22,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:22,748 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633170728] [2021-05-22 02:09:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:22,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:22,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:22,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633170728] [2021-05-22 02:09:22,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633170728] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:22,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:22,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:22,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548409742] [2021-05-22 02:09:22,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:22,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:22,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:22,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:22,843 INFO L87 Difference]: Start difference. First operand 5131 states and 24276 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:22,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:22,954 INFO L93 Difference]: Finished difference Result 11075 states and 49631 transitions. [2021-05-22 02:09:22,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:22,954 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:22,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:22,981 INFO L225 Difference]: With dead ends: 11075 [2021-05-22 02:09:22,981 INFO L226 Difference]: Without dead ends: 10600 [2021-05-22 02:09:22,981 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:23,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10600 states. [2021-05-22 02:09:23,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10600 to 5203. [2021-05-22 02:09:23,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.719723183391004) internal successors, (24552), 5202 states have internal predecessors, (24552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:23,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 24552 transitions. [2021-05-22 02:09:23,212 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 24552 transitions. Word has length 29 [2021-05-22 02:09:23,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:23,212 INFO L482 AbstractCegarLoop]: Abstraction has 5203 states and 24552 transitions. [2021-05-22 02:09:23,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:23,213 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 24552 transitions. [2021-05-22 02:09:23,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:23,222 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:23,222 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:23,222 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1443 [2021-05-22 02:09:23,222 INFO L430 AbstractCegarLoop]: === Iteration 1445 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:23,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:23,222 INFO L82 PathProgramCache]: Analyzing trace with hash 285919333, now seen corresponding path program 1440 times [2021-05-22 02:09:23,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:23,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766740322] [2021-05-22 02:09:23,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:23,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:23,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:23,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766740322] [2021-05-22 02:09:23,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766740322] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:23,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:23,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:23,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228112973] [2021-05-22 02:09:23,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:23,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:23,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:23,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:23,319 INFO L87 Difference]: Start difference. First operand 5203 states and 24552 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:23,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:23,427 INFO L93 Difference]: Finished difference Result 10743 states and 48334 transitions. [2021-05-22 02:09:23,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:23,427 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:23,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:23,453 INFO L225 Difference]: With dead ends: 10743 [2021-05-22 02:09:23,453 INFO L226 Difference]: Without dead ends: 10146 [2021-05-22 02:09:23,453 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:23,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10146 states. [2021-05-22 02:09:23,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10146 to 5069. [2021-05-22 02:09:23,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5069 states, 5068 states have (on average 4.7571033938437255) internal successors, (24109), 5068 states have internal predecessors, (24109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:23,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5069 states to 5069 states and 24109 transitions. [2021-05-22 02:09:23,748 INFO L78 Accepts]: Start accepts. Automaton has 5069 states and 24109 transitions. Word has length 29 [2021-05-22 02:09:23,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:23,748 INFO L482 AbstractCegarLoop]: Abstraction has 5069 states and 24109 transitions. [2021-05-22 02:09:23,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:23,749 INFO L276 IsEmpty]: Start isEmpty. Operand 5069 states and 24109 transitions. [2021-05-22 02:09:23,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:23,757 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:23,757 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:23,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1444 [2021-05-22 02:09:23,757 INFO L430 AbstractCegarLoop]: === Iteration 1446 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:23,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:23,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1182482037, now seen corresponding path program 1441 times [2021-05-22 02:09:23,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:23,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936765679] [2021-05-22 02:09:23,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:23,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:23,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936765679] [2021-05-22 02:09:23,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936765679] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:23,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:23,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:23,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578409845] [2021-05-22 02:09:23,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:23,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:23,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:23,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:23,874 INFO L87 Difference]: Start difference. First operand 5069 states and 24109 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:23,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:23,991 INFO L93 Difference]: Finished difference Result 11838 states and 52902 transitions. [2021-05-22 02:09:23,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:23,992 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:23,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:24,019 INFO L225 Difference]: With dead ends: 11838 [2021-05-22 02:09:24,019 INFO L226 Difference]: Without dead ends: 11423 [2021-05-22 02:09:24,019 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:24,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11423 states. [2021-05-22 02:09:24,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11423 to 5241. [2021-05-22 02:09:24,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5241 states, 5240 states have (on average 4.74675572519084) internal successors, (24873), 5240 states have internal predecessors, (24873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5241 states to 5241 states and 24873 transitions. [2021-05-22 02:09:24,255 INFO L78 Accepts]: Start accepts. Automaton has 5241 states and 24873 transitions. Word has length 29 [2021-05-22 02:09:24,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:24,255 INFO L482 AbstractCegarLoop]: Abstraction has 5241 states and 24873 transitions. [2021-05-22 02:09:24,255 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:24,255 INFO L276 IsEmpty]: Start isEmpty. Operand 5241 states and 24873 transitions. [2021-05-22 02:09:24,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:24,263 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:24,263 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:24,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1445 [2021-05-22 02:09:24,263 INFO L430 AbstractCegarLoop]: === Iteration 1447 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:24,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:24,263 INFO L82 PathProgramCache]: Analyzing trace with hash 572338571, now seen corresponding path program 1442 times [2021-05-22 02:09:24,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:24,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185177200] [2021-05-22 02:09:24,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:24,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:24,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:24,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185177200] [2021-05-22 02:09:24,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185177200] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:24,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:24,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:24,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496408401] [2021-05-22 02:09:24,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:24,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:24,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:24,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:24,380 INFO L87 Difference]: Start difference. First operand 5241 states and 24873 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:24,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:24,481 INFO L93 Difference]: Finished difference Result 11965 states and 53381 transitions. [2021-05-22 02:09:24,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:24,481 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:24,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:24,508 INFO L225 Difference]: With dead ends: 11965 [2021-05-22 02:09:24,508 INFO L226 Difference]: Without dead ends: 11343 [2021-05-22 02:09:24,509 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:24,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11343 states. [2021-05-22 02:09:24,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11343 to 5161. [2021-05-22 02:09:24,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.750581395348838) internal successors, (24513), 5160 states have internal predecessors, (24513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:24,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24513 transitions. [2021-05-22 02:09:24,755 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24513 transitions. Word has length 29 [2021-05-22 02:09:24,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:24,755 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24513 transitions. [2021-05-22 02:09:24,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:24,755 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24513 transitions. [2021-05-22 02:09:24,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:24,764 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:24,764 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:24,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1446 [2021-05-22 02:09:24,764 INFO L430 AbstractCegarLoop]: === Iteration 1448 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:24,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:24,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1402283893, now seen corresponding path program 1443 times [2021-05-22 02:09:24,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:24,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564661671] [2021-05-22 02:09:24,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:24,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:24,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:24,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564661671] [2021-05-22 02:09:24,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564661671] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:24,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:24,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:24,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20357051] [2021-05-22 02:09:24,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:24,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:24,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:24,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:24,881 INFO L87 Difference]: Start difference. First operand 5161 states and 24513 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:24,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:24,987 INFO L93 Difference]: Finished difference Result 11741 states and 52460 transitions. [2021-05-22 02:09:24,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:24,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:24,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:25,016 INFO L225 Difference]: With dead ends: 11741 [2021-05-22 02:09:25,016 INFO L226 Difference]: Without dead ends: 11326 [2021-05-22 02:09:25,016 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:25,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11326 states. [2021-05-22 02:09:25,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11326 to 5209. [2021-05-22 02:09:25,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.740591397849462) internal successors, (24689), 5208 states have internal predecessors, (24689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:25,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24689 transitions. [2021-05-22 02:09:25,251 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24689 transitions. Word has length 29 [2021-05-22 02:09:25,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:25,251 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24689 transitions. [2021-05-22 02:09:25,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:25,251 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24689 transitions. [2021-05-22 02:09:25,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:25,260 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:25,260 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:25,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1447 [2021-05-22 02:09:25,260 INFO L430 AbstractCegarLoop]: === Iteration 1449 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:25,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:25,260 INFO L82 PathProgramCache]: Analyzing trace with hash -685620947, now seen corresponding path program 1444 times [2021-05-22 02:09:25,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:25,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439616841] [2021-05-22 02:09:25,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:25,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:25,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:25,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439616841] [2021-05-22 02:09:25,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439616841] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:25,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:25,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:25,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612139011] [2021-05-22 02:09:25,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:25,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:25,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:25,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:25,377 INFO L87 Difference]: Start difference. First operand 5209 states and 24689 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:25,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:25,490 INFO L93 Difference]: Finished difference Result 11803 states and 52681 transitions. [2021-05-22 02:09:25,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:25,490 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:25,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:25,515 INFO L225 Difference]: With dead ends: 11803 [2021-05-22 02:09:25,516 INFO L226 Difference]: Without dead ends: 11278 [2021-05-22 02:09:25,516 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:25,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11278 states. [2021-05-22 02:09:25,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11278 to 5161. [2021-05-22 02:09:25,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.745930232558139) internal successors, (24489), 5160 states have internal predecessors, (24489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:25,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24489 transitions. [2021-05-22 02:09:25,753 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24489 transitions. Word has length 29 [2021-05-22 02:09:25,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:25,753 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24489 transitions. [2021-05-22 02:09:25,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:25,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24489 transitions. [2021-05-22 02:09:25,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:25,761 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:25,761 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:25,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1448 [2021-05-22 02:09:25,761 INFO L430 AbstractCegarLoop]: === Iteration 1450 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:25,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:25,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1397604653, now seen corresponding path program 1445 times [2021-05-22 02:09:25,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:25,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034713799] [2021-05-22 02:09:25,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:25,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:25,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:25,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034713799] [2021-05-22 02:09:25,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034713799] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:25,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:25,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:25,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041791418] [2021-05-22 02:09:25,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:25,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:25,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:25,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:25,871 INFO L87 Difference]: Start difference. First operand 5161 states and 24489 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:25,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:25,969 INFO L93 Difference]: Finished difference Result 12090 states and 53896 transitions. [2021-05-22 02:09:25,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:25,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:25,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:25,997 INFO L225 Difference]: With dead ends: 12090 [2021-05-22 02:09:25,997 INFO L226 Difference]: Without dead ends: 11548 [2021-05-22 02:09:25,997 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:26,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11548 states. [2021-05-22 02:09:26,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11548 to 5304. [2021-05-22 02:09:26,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5304 states, 5303 states have (on average 4.71582123326419) internal successors, (25008), 5303 states have internal predecessors, (25008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:26,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5304 states to 5304 states and 25008 transitions. [2021-05-22 02:09:26,234 INFO L78 Accepts]: Start accepts. Automaton has 5304 states and 25008 transitions. Word has length 29 [2021-05-22 02:09:26,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:26,234 INFO L482 AbstractCegarLoop]: Abstraction has 5304 states and 25008 transitions. [2021-05-22 02:09:26,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:26,234 INFO L276 IsEmpty]: Start isEmpty. Operand 5304 states and 25008 transitions. [2021-05-22 02:09:26,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:26,242 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:26,242 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:26,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1449 [2021-05-22 02:09:26,242 INFO L430 AbstractCegarLoop]: === Iteration 1451 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:26,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:26,243 INFO L82 PathProgramCache]: Analyzing trace with hash -645732341, now seen corresponding path program 1446 times [2021-05-22 02:09:26,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:26,243 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582978915] [2021-05-22 02:09:26,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:26,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:26,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:26,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582978915] [2021-05-22 02:09:26,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582978915] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:26,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:26,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:26,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380167880] [2021-05-22 02:09:26,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:26,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:26,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:26,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:26,354 INFO L87 Difference]: Start difference. First operand 5304 states and 25008 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:26,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:26,475 INFO L93 Difference]: Finished difference Result 12025 states and 53527 transitions. [2021-05-22 02:09:26,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:26,476 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:26,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:26,504 INFO L225 Difference]: With dead ends: 12025 [2021-05-22 02:09:26,505 INFO L226 Difference]: Without dead ends: 11349 [2021-05-22 02:09:26,505 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:26,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11349 states. [2021-05-22 02:09:26,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11349 to 5105. [2021-05-22 02:09:26,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.752547021943574) internal successors, (24257), 5104 states have internal predecessors, (24257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:26,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24257 transitions. [2021-05-22 02:09:26,726 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24257 transitions. Word has length 29 [2021-05-22 02:09:26,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:26,726 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24257 transitions. [2021-05-22 02:09:26,726 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:26,726 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24257 transitions. [2021-05-22 02:09:26,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:26,734 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:26,734 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:26,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1450 [2021-05-22 02:09:26,734 INFO L430 AbstractCegarLoop]: === Iteration 1452 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:26,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:26,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1022391819, now seen corresponding path program 1447 times [2021-05-22 02:09:26,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:26,734 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034680582] [2021-05-22 02:09:26,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:26,852 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:26,852 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034680582] [2021-05-22 02:09:26,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034680582] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:26,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:26,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:26,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792749293] [2021-05-22 02:09:26,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:26,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:26,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:26,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:26,852 INFO L87 Difference]: Start difference. First operand 5105 states and 24257 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:26,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:26,973 INFO L93 Difference]: Finished difference Result 11787 states and 52690 transitions. [2021-05-22 02:09:26,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:26,973 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:26,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:27,002 INFO L225 Difference]: With dead ends: 11787 [2021-05-22 02:09:27,002 INFO L226 Difference]: Without dead ends: 11372 [2021-05-22 02:09:27,002 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:27,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11372 states. [2021-05-22 02:09:27,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11372 to 5225. [2021-05-22 02:09:27,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5225 states, 5224 states have (on average 4.7436830015313936) internal successors, (24781), 5224 states have internal predecessors, (24781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:27,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5225 states to 5225 states and 24781 transitions. [2021-05-22 02:09:27,237 INFO L78 Accepts]: Start accepts. Automaton has 5225 states and 24781 transitions. Word has length 29 [2021-05-22 02:09:27,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:27,237 INFO L482 AbstractCegarLoop]: Abstraction has 5225 states and 24781 transitions. [2021-05-22 02:09:27,237 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:27,237 INFO L276 IsEmpty]: Start isEmpty. Operand 5225 states and 24781 transitions. [2021-05-22 02:09:27,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:27,245 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:27,245 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:27,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1451 [2021-05-22 02:09:27,245 INFO L430 AbstractCegarLoop]: === Iteration 1453 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:27,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:27,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1517754869, now seen corresponding path program 1448 times [2021-05-22 02:09:27,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:27,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914988134] [2021-05-22 02:09:27,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:27,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:27,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:27,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914988134] [2021-05-22 02:09:27,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914988134] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:27,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:27,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:27,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915508207] [2021-05-22 02:09:27,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:27,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:27,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:27,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:27,364 INFO L87 Difference]: Start difference. First operand 5225 states and 24781 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:27,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:27,471 INFO L93 Difference]: Finished difference Result 11914 states and 53169 transitions. [2021-05-22 02:09:27,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:27,471 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:27,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:27,499 INFO L225 Difference]: With dead ends: 11914 [2021-05-22 02:09:27,499 INFO L226 Difference]: Without dead ends: 11292 [2021-05-22 02:09:27,499 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:27,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11292 states. [2021-05-22 02:09:27,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11292 to 5145. [2021-05-22 02:09:27,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.747472783825817) internal successors, (24421), 5144 states have internal predecessors, (24421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:27,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24421 transitions. [2021-05-22 02:09:27,740 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24421 transitions. Word has length 29 [2021-05-22 02:09:27,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:27,740 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24421 transitions. [2021-05-22 02:09:27,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:27,740 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24421 transitions. [2021-05-22 02:09:27,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:27,749 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:27,749 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:27,749 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1452 [2021-05-22 02:09:27,749 INFO L430 AbstractCegarLoop]: === Iteration 1454 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:27,749 INFO L82 PathProgramCache]: Analyzing trace with hash -865111639, now seen corresponding path program 1449 times [2021-05-22 02:09:27,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:27,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794714314] [2021-05-22 02:09:27,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:27,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:27,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794714314] [2021-05-22 02:09:27,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794714314] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:27,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:27,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:27,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819343179] [2021-05-22 02:09:27,871 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:27,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:27,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:27,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:27,872 INFO L87 Difference]: Start difference. First operand 5145 states and 24421 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:27,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:27,980 INFO L93 Difference]: Finished difference Result 11688 states and 52243 transitions. [2021-05-22 02:09:27,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:27,980 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:27,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:28,008 INFO L225 Difference]: With dead ends: 11688 [2021-05-22 02:09:28,008 INFO L226 Difference]: Without dead ends: 11273 [2021-05-22 02:09:28,008 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:28,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11273 states. [2021-05-22 02:09:28,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11273 to 5193. [2021-05-22 02:09:28,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5193 states, 5192 states have (on average 4.737480739599384) internal successors, (24597), 5192 states have internal predecessors, (24597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:28,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5193 states to 5193 states and 24597 transitions. [2021-05-22 02:09:28,236 INFO L78 Accepts]: Start accepts. Automaton has 5193 states and 24597 transitions. Word has length 29 [2021-05-22 02:09:28,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:28,236 INFO L482 AbstractCegarLoop]: Abstraction has 5193 states and 24597 transitions. [2021-05-22 02:09:28,236 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:28,236 INFO L276 IsEmpty]: Start isEmpty. Operand 5193 states and 24597 transitions. [2021-05-22 02:09:28,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:28,245 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:28,245 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:28,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1453 [2021-05-22 02:09:28,245 INFO L430 AbstractCegarLoop]: === Iteration 1455 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:28,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:28,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1379792565, now seen corresponding path program 1450 times [2021-05-22 02:09:28,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:28,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315499135] [2021-05-22 02:09:28,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:28,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:28,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:28,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315499135] [2021-05-22 02:09:28,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315499135] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:28,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:28,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:28,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081140374] [2021-05-22 02:09:28,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:28,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:28,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:28,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:28,370 INFO L87 Difference]: Start difference. First operand 5193 states and 24597 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:28,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:28,479 INFO L93 Difference]: Finished difference Result 11748 states and 52459 transitions. [2021-05-22 02:09:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:28,479 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:28,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:28,506 INFO L225 Difference]: With dead ends: 11748 [2021-05-22 02:09:28,507 INFO L226 Difference]: Without dead ends: 11225 [2021-05-22 02:09:28,507 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:28,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11225 states. [2021-05-22 02:09:28,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11225 to 5145. [2021-05-22 02:09:28,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 5144 states have (on average 4.742807153965785) internal successors, (24397), 5144 states have internal predecessors, (24397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:28,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 24397 transitions. [2021-05-22 02:09:28,740 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 24397 transitions. Word has length 29 [2021-05-22 02:09:28,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:28,740 INFO L482 AbstractCegarLoop]: Abstraction has 5145 states and 24397 transitions. [2021-05-22 02:09:28,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:28,740 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 24397 transitions. [2021-05-22 02:09:28,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:28,748 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:28,748 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:28,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1454 [2021-05-22 02:09:28,748 INFO L430 AbstractCegarLoop]: === Iteration 1456 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:28,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:28,749 INFO L82 PathProgramCache]: Analyzing trace with hash -640964277, now seen corresponding path program 1451 times [2021-05-22 02:09:28,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:28,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63483668] [2021-05-22 02:09:28,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:28,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:28,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63483668] [2021-05-22 02:09:28,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63483668] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:28,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:28,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:28,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433614545] [2021-05-22 02:09:28,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:28,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:28,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:28,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:28,862 INFO L87 Difference]: Start difference. First operand 5145 states and 24397 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:28,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:28,951 INFO L93 Difference]: Finished difference Result 12004 states and 53564 transitions. [2021-05-22 02:09:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:28,952 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:28,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:28,980 INFO L225 Difference]: With dead ends: 12004 [2021-05-22 02:09:28,980 INFO L226 Difference]: Without dead ends: 11462 [2021-05-22 02:09:28,980 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:29,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11462 states. [2021-05-22 02:09:29,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11462 to 5255. [2021-05-22 02:09:29,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5255 states, 5254 states have (on average 4.72059383326989) internal successors, (24802), 5254 states have internal predecessors, (24802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:29,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 24802 transitions. [2021-05-22 02:09:29,224 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 24802 transitions. Word has length 29 [2021-05-22 02:09:29,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:29,224 INFO L482 AbstractCegarLoop]: Abstraction has 5255 states and 24802 transitions. [2021-05-22 02:09:29,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:29,224 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 24802 transitions. [2021-05-22 02:09:29,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:29,232 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:29,232 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:29,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1455 [2021-05-22 02:09:29,233 INFO L430 AbstractCegarLoop]: === Iteration 1457 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:29,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:29,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1381916375, now seen corresponding path program 1452 times [2021-05-22 02:09:29,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:29,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18462480] [2021-05-22 02:09:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:29,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:29,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:29,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18462480] [2021-05-22 02:09:29,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18462480] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:29,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:29,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:29,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132288906] [2021-05-22 02:09:29,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:29,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:29,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:29,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:29,346 INFO L87 Difference]: Start difference. First operand 5255 states and 24802 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:29,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:29,475 INFO L93 Difference]: Finished difference Result 11937 states and 53191 transitions. [2021-05-22 02:09:29,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:29,476 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:29,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:29,504 INFO L225 Difference]: With dead ends: 11937 [2021-05-22 02:09:29,504 INFO L226 Difference]: Without dead ends: 11312 [2021-05-22 02:09:29,504 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11312 states. [2021-05-22 02:09:29,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11312 to 5105. [2021-05-22 02:09:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.748628526645768) internal successors, (24237), 5104 states have internal predecessors, (24237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:29,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24237 transitions. [2021-05-22 02:09:29,728 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24237 transitions. Word has length 29 [2021-05-22 02:09:29,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:29,728 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24237 transitions. [2021-05-22 02:09:29,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:29,728 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24237 transitions. [2021-05-22 02:09:29,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:29,736 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:29,736 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:29,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1456 [2021-05-22 02:09:29,736 INFO L430 AbstractCegarLoop]: === Iteration 1458 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:29,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:29,736 INFO L82 PathProgramCache]: Analyzing trace with hash -2011584343, now seen corresponding path program 1453 times [2021-05-22 02:09:29,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:29,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783893227] [2021-05-22 02:09:29,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:29,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:29,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:29,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783893227] [2021-05-22 02:09:29,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783893227] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:29,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:29,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:29,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933236386] [2021-05-22 02:09:29,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:29,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:29,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:29,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:29,855 INFO L87 Difference]: Start difference. First operand 5105 states and 24237 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:29,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:29,961 INFO L93 Difference]: Finished difference Result 11545 states and 51642 transitions. [2021-05-22 02:09:29,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:29,961 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:29,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:29,987 INFO L225 Difference]: With dead ends: 11545 [2021-05-22 02:09:29,987 INFO L226 Difference]: Without dead ends: 11130 [2021-05-22 02:09:29,987 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:30,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11130 states. [2021-05-22 02:09:30,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11130 to 5177. [2021-05-22 02:09:30,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5177 states, 5176 states have (on average 4.740533230293663) internal successors, (24537), 5176 states have internal predecessors, (24537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:30,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5177 states to 5177 states and 24537 transitions. [2021-05-22 02:09:30,211 INFO L78 Accepts]: Start accepts. Automaton has 5177 states and 24537 transitions. Word has length 29 [2021-05-22 02:09:30,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:30,211 INFO L482 AbstractCegarLoop]: Abstraction has 5177 states and 24537 transitions. [2021-05-22 02:09:30,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:30,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5177 states and 24537 transitions. [2021-05-22 02:09:30,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:30,219 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:30,219 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:30,219 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1457 [2021-05-22 02:09:30,219 INFO L430 AbstractCegarLoop]: === Iteration 1459 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:30,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:30,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1294921397, now seen corresponding path program 1454 times [2021-05-22 02:09:30,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:30,219 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767913202] [2021-05-22 02:09:30,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:30,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:30,338 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:30,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767913202] [2021-05-22 02:09:30,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767913202] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:30,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:30,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:30,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634534280] [2021-05-22 02:09:30,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:30,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:30,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:30,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:30,339 INFO L87 Difference]: Start difference. First operand 5177 states and 24537 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:30,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:30,444 INFO L93 Difference]: Finished difference Result 11607 states and 51863 transitions. [2021-05-22 02:09:30,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:30,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:30,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:30,470 INFO L225 Difference]: With dead ends: 11607 [2021-05-22 02:09:30,470 INFO L226 Difference]: Without dead ends: 11082 [2021-05-22 02:09:30,470 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:30,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11082 states. [2021-05-22 02:09:30,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11082 to 5129. [2021-05-22 02:09:30,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.745904836193448) internal successors, (24337), 5128 states have internal predecessors, (24337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:30,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24337 transitions. [2021-05-22 02:09:30,697 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24337 transitions. Word has length 29 [2021-05-22 02:09:30,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:30,697 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24337 transitions. [2021-05-22 02:09:30,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:30,697 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24337 transitions. [2021-05-22 02:09:30,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:30,705 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:30,705 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:30,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1458 [2021-05-22 02:09:30,705 INFO L430 AbstractCegarLoop]: === Iteration 1460 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:30,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:30,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1109423243, now seen corresponding path program 1455 times [2021-05-22 02:09:30,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:30,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702486133] [2021-05-22 02:09:30,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:30,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:30,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702486133] [2021-05-22 02:09:30,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702486133] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:30,830 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:30,830 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:30,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151659019] [2021-05-22 02:09:30,830 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:30,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:30,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:30,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:30,830 INFO L87 Difference]: Start difference. First operand 5129 states and 24337 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:30,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:30,931 INFO L93 Difference]: Finished difference Result 11543 states and 51613 transitions. [2021-05-22 02:09:30,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:30,931 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:30,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:30,957 INFO L225 Difference]: With dead ends: 11543 [2021-05-22 02:09:30,957 INFO L226 Difference]: Without dead ends: 11128 [2021-05-22 02:09:30,957 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:31,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11128 states. [2021-05-22 02:09:31,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11128 to 5177. [2021-05-22 02:09:31,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5177 states, 5176 states have (on average 4.735896445131376) internal successors, (24513), 5176 states have internal predecessors, (24513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:31,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5177 states to 5177 states and 24513 transitions. [2021-05-22 02:09:31,190 INFO L78 Accepts]: Start accepts. Automaton has 5177 states and 24513 transitions. Word has length 29 [2021-05-22 02:09:31,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:31,190 INFO L482 AbstractCegarLoop]: Abstraction has 5177 states and 24513 transitions. [2021-05-22 02:09:31,190 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:31,191 INFO L276 IsEmpty]: Start isEmpty. Operand 5177 states and 24513 transitions. [2021-05-22 02:09:31,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:31,198 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:31,198 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:31,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1459 [2021-05-22 02:09:31,199 INFO L430 AbstractCegarLoop]: === Iteration 1461 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:31,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:31,199 INFO L82 PathProgramCache]: Analyzing trace with hash 2138988619, now seen corresponding path program 1456 times [2021-05-22 02:09:31,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:31,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165182047] [2021-05-22 02:09:31,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:31,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:31,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165182047] [2021-05-22 02:09:31,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165182047] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:31,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:31,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:31,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959369407] [2021-05-22 02:09:31,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:31,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:31,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:31,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:31,322 INFO L87 Difference]: Start difference. First operand 5177 states and 24513 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:31,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:31,427 INFO L93 Difference]: Finished difference Result 11603 states and 51829 transitions. [2021-05-22 02:09:31,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:31,427 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:31,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:31,453 INFO L225 Difference]: With dead ends: 11603 [2021-05-22 02:09:31,453 INFO L226 Difference]: Without dead ends: 11080 [2021-05-22 02:09:31,453 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:31,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11080 states. [2021-05-22 02:09:31,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11080 to 5129. [2021-05-22 02:09:31,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.741224648985959) internal successors, (24313), 5128 states have internal predecessors, (24313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:31,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24313 transitions. [2021-05-22 02:09:31,682 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24313 transitions. Word has length 29 [2021-05-22 02:09:31,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:31,682 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24313 transitions. [2021-05-22 02:09:31,682 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:31,682 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24313 transitions. [2021-05-22 02:09:31,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:31,690 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:31,690 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:31,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1460 [2021-05-22 02:09:31,690 INFO L430 AbstractCegarLoop]: === Iteration 1462 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:31,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:31,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1982052243, now seen corresponding path program 1457 times [2021-05-22 02:09:31,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:31,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981557619] [2021-05-22 02:09:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:31,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:31,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981557619] [2021-05-22 02:09:31,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981557619] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:31,802 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:31,802 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:31,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680625948] [2021-05-22 02:09:31,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:31,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:31,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:31,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:31,802 INFO L87 Difference]: Start difference. First operand 5129 states and 24313 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:31,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:31,905 INFO L93 Difference]: Finished difference Result 11697 states and 52274 transitions. [2021-05-22 02:09:31,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:31,905 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:31,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:31,933 INFO L225 Difference]: With dead ends: 11697 [2021-05-22 02:09:31,933 INFO L226 Difference]: Without dead ends: 11220 [2021-05-22 02:09:31,933 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:32,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11220 states. [2021-05-22 02:09:32,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11220 to 5207. [2021-05-22 02:09:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5207 states, 5206 states have (on average 4.726469458317326) internal successors, (24606), 5206 states have internal predecessors, (24606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:32,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5207 states to 5207 states and 24606 transitions. [2021-05-22 02:09:32,151 INFO L78 Accepts]: Start accepts. Automaton has 5207 states and 24606 transitions. Word has length 29 [2021-05-22 02:09:32,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:32,151 INFO L482 AbstractCegarLoop]: Abstraction has 5207 states and 24606 transitions. [2021-05-22 02:09:32,151 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:32,151 INFO L276 IsEmpty]: Start isEmpty. Operand 5207 states and 24606 transitions. [2021-05-22 02:09:32,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:32,159 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:32,159 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:32,159 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1461 [2021-05-22 02:09:32,159 INFO L430 AbstractCegarLoop]: === Iteration 1463 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:32,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:32,159 INFO L82 PathProgramCache]: Analyzing trace with hash 920770507, now seen corresponding path program 1458 times [2021-05-22 02:09:32,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:32,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994538523] [2021-05-22 02:09:32,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:32,273 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:32,273 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994538523] [2021-05-22 02:09:32,273 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994538523] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:32,273 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:32,273 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:32,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026472970] [2021-05-22 02:09:32,273 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:32,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:32,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:32,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:32,273 INFO L87 Difference]: Start difference. First operand 5207 states and 24606 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:32,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:32,386 INFO L93 Difference]: Finished difference Result 11695 states and 52191 transitions. [2021-05-22 02:09:32,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:32,386 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:32,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:32,411 INFO L225 Difference]: With dead ends: 11695 [2021-05-22 02:09:32,412 INFO L226 Difference]: Without dead ends: 11118 [2021-05-22 02:09:32,412 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:32,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11118 states. [2021-05-22 02:09:32,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11118 to 5105. [2021-05-22 02:09:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.746277429467084) internal successors, (24225), 5104 states have internal predecessors, (24225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:32,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24225 transitions. [2021-05-22 02:09:32,643 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24225 transitions. Word has length 29 [2021-05-22 02:09:32,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:32,643 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24225 transitions. [2021-05-22 02:09:32,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:32,643 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24225 transitions. [2021-05-22 02:09:32,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:32,651 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:32,651 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:32,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1462 [2021-05-22 02:09:32,651 INFO L430 AbstractCegarLoop]: === Iteration 1464 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:32,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:32,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1309869971, now seen corresponding path program 1459 times [2021-05-22 02:09:32,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:32,651 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612051445] [2021-05-22 02:09:32,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:32,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:32,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:32,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612051445] [2021-05-22 02:09:32,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612051445] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:32,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:32,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:32,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512375869] [2021-05-22 02:09:32,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:32,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:32,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:32,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:32,757 INFO L87 Difference]: Start difference. First operand 5105 states and 24225 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:32,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:32,862 INFO L93 Difference]: Finished difference Result 12241 states and 54587 transitions. [2021-05-22 02:09:32,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:32,863 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:32,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:32,891 INFO L225 Difference]: With dead ends: 12241 [2021-05-22 02:09:32,891 INFO L226 Difference]: Without dead ends: 11699 [2021-05-22 02:09:32,891 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:33,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11699 states. [2021-05-22 02:09:33,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11699 to 5335. [2021-05-22 02:09:33,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5335 states, 5334 states have (on average 4.713348331458568) internal successors, (25141), 5334 states have internal predecessors, (25141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:33,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5335 states to 5335 states and 25141 transitions. [2021-05-22 02:09:33,122 INFO L78 Accepts]: Start accepts. Automaton has 5335 states and 25141 transitions. Word has length 29 [2021-05-22 02:09:33,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:33,122 INFO L482 AbstractCegarLoop]: Abstraction has 5335 states and 25141 transitions. [2021-05-22 02:09:33,122 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:33,122 INFO L276 IsEmpty]: Start isEmpty. Operand 5335 states and 25141 transitions. [2021-05-22 02:09:33,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:33,130 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:33,130 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:33,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1463 [2021-05-22 02:09:33,130 INFO L430 AbstractCegarLoop]: === Iteration 1465 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:33,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:33,131 INFO L82 PathProgramCache]: Analyzing trace with hash 941760331, now seen corresponding path program 1460 times [2021-05-22 02:09:33,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:33,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099426056] [2021-05-22 02:09:33,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:33,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:33,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:33,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099426056] [2021-05-22 02:09:33,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099426056] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:33,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:33,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:33,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563454904] [2021-05-22 02:09:33,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:33,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:33,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:33,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:33,236 INFO L87 Difference]: Start difference. First operand 5335 states and 25141 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:33,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:33,346 INFO L93 Difference]: Finished difference Result 12176 states and 54218 transitions. [2021-05-22 02:09:33,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:33,346 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:33,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:33,373 INFO L225 Difference]: With dead ends: 12176 [2021-05-22 02:09:33,373 INFO L226 Difference]: Without dead ends: 11556 [2021-05-22 02:09:33,374 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:33,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11556 states. [2021-05-22 02:09:33,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11556 to 5192. [2021-05-22 02:09:33,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5192 states, 5191 states have (on average 4.7295318821036405) internal successors, (24551), 5191 states have internal predecessors, (24551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:33,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5192 states to 5192 states and 24551 transitions. [2021-05-22 02:09:33,672 INFO L78 Accepts]: Start accepts. Automaton has 5192 states and 24551 transitions. Word has length 29 [2021-05-22 02:09:33,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:33,672 INFO L482 AbstractCegarLoop]: Abstraction has 5192 states and 24551 transitions. [2021-05-22 02:09:33,672 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:33,672 INFO L276 IsEmpty]: Start isEmpty. Operand 5192 states and 24551 transitions. [2021-05-22 02:09:33,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:33,680 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:33,680 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:33,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1464 [2021-05-22 02:09:33,680 INFO L430 AbstractCegarLoop]: === Iteration 1466 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:33,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:33,681 INFO L82 PathProgramCache]: Analyzing trace with hash 869017675, now seen corresponding path program 1461 times [2021-05-22 02:09:33,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:33,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889431525] [2021-05-22 02:09:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:33,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:33,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889431525] [2021-05-22 02:09:33,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889431525] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:33,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:33,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:33,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565363017] [2021-05-22 02:09:33,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:33,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:33,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:33,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:33,784 INFO L87 Difference]: Start difference. First operand 5192 states and 24551 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:33,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:33,874 INFO L93 Difference]: Finished difference Result 12206 states and 54396 transitions. [2021-05-22 02:09:33,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:33,874 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:33,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:33,903 INFO L225 Difference]: With dead ends: 12206 [2021-05-22 02:09:33,903 INFO L226 Difference]: Without dead ends: 11664 [2021-05-22 02:09:33,903 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 109.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:34,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11664 states. [2021-05-22 02:09:34,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11664 to 5302. [2021-05-22 02:09:34,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5302 states, 5301 states have (on average 4.707790982833427) internal successors, (24956), 5301 states have internal predecessors, (24956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:34,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5302 states to 5302 states and 24956 transitions. [2021-05-22 02:09:34,143 INFO L78 Accepts]: Start accepts. Automaton has 5302 states and 24956 transitions. Word has length 29 [2021-05-22 02:09:34,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:34,143 INFO L482 AbstractCegarLoop]: Abstraction has 5302 states and 24956 transitions. [2021-05-22 02:09:34,143 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:34,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5302 states and 24956 transitions. [2021-05-22 02:09:34,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:34,151 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:34,152 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:34,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1465 [2021-05-22 02:09:34,152 INFO L430 AbstractCegarLoop]: === Iteration 1467 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:34,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:34,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1424805963, now seen corresponding path program 1462 times [2021-05-22 02:09:34,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:34,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193484911] [2021-05-22 02:09:34,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:34,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:34,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193484911] [2021-05-22 02:09:34,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193484911] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:34,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:34,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:34,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499516545] [2021-05-22 02:09:34,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:34,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:34,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:34,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:34,253 INFO L87 Difference]: Start difference. First operand 5302 states and 24956 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:34,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:34,367 INFO L93 Difference]: Finished difference Result 12139 states and 54023 transitions. [2021-05-22 02:09:34,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:34,367 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:34,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:34,398 INFO L225 Difference]: With dead ends: 12139 [2021-05-22 02:09:34,398 INFO L226 Difference]: Without dead ends: 11554 [2021-05-22 02:09:34,398 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:34,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11554 states. [2021-05-22 02:09:34,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11554 to 5192. [2021-05-22 02:09:34,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5192 states, 5191 states have (on average 4.7189366210749375) internal successors, (24496), 5191 states have internal predecessors, (24496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5192 states to 5192 states and 24496 transitions. [2021-05-22 02:09:34,638 INFO L78 Accepts]: Start accepts. Automaton has 5192 states and 24496 transitions. Word has length 29 [2021-05-22 02:09:34,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:34,638 INFO L482 AbstractCegarLoop]: Abstraction has 5192 states and 24496 transitions. [2021-05-22 02:09:34,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:34,638 INFO L276 IsEmpty]: Start isEmpty. Operand 5192 states and 24496 transitions. [2021-05-22 02:09:34,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:34,646 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:34,646 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:34,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1466 [2021-05-22 02:09:34,646 INFO L430 AbstractCegarLoop]: === Iteration 1468 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:34,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:34,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1851365289, now seen corresponding path program 1463 times [2021-05-22 02:09:34,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:34,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371817790] [2021-05-22 02:09:34,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:34,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:34,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:34,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371817790] [2021-05-22 02:09:34,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371817790] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:34,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:34,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:34,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708166616] [2021-05-22 02:09:34,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:34,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:34,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:34,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:34,749 INFO L87 Difference]: Start difference. First operand 5192 states and 24496 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:34,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:34,861 INFO L93 Difference]: Finished difference Result 12044 states and 53681 transitions. [2021-05-22 02:09:34,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:34,861 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:34,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:34,890 INFO L225 Difference]: With dead ends: 12044 [2021-05-22 02:09:34,890 INFO L226 Difference]: Without dead ends: 11567 [2021-05-22 02:09:34,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:35,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11567 states. [2021-05-22 02:09:35,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11567 to 5270. [2021-05-22 02:09:35,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 5269 states have (on average 4.7046877965458345) internal successors, (24789), 5269 states have internal predecessors, (24789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:35,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 24789 transitions. [2021-05-22 02:09:35,122 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 24789 transitions. Word has length 29 [2021-05-22 02:09:35,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:35,122 INFO L482 AbstractCegarLoop]: Abstraction has 5270 states and 24789 transitions. [2021-05-22 02:09:35,122 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:35,123 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 24789 transitions. [2021-05-22 02:09:35,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:35,131 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:35,131 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:35,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1467 [2021-05-22 02:09:35,131 INFO L430 AbstractCegarLoop]: === Iteration 1469 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:35,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:35,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1644557323, now seen corresponding path program 1464 times [2021-05-22 02:09:35,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:35,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020689677] [2021-05-22 02:09:35,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:35,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:35,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020689677] [2021-05-22 02:09:35,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020689677] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:35,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:35,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:35,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985822424] [2021-05-22 02:09:35,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:35,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:35,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:35,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:35,234 INFO L87 Difference]: Start difference. First operand 5270 states and 24789 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:35,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:35,348 INFO L93 Difference]: Finished difference Result 12042 states and 53598 transitions. [2021-05-22 02:09:35,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:35,348 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:35,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:35,376 INFO L225 Difference]: With dead ends: 12042 [2021-05-22 02:09:35,376 INFO L226 Difference]: Without dead ends: 11366 [2021-05-22 02:09:35,376 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:35,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11366 states. [2021-05-22 02:09:35,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11366 to 5069. [2021-05-22 02:09:35,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5069 states, 5068 states have (on average 4.753551696921862) internal successors, (24091), 5068 states have internal predecessors, (24091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:35,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5069 states to 5069 states and 24091 transitions. [2021-05-22 02:09:35,618 INFO L78 Accepts]: Start accepts. Automaton has 5069 states and 24091 transitions. Word has length 29 [2021-05-22 02:09:35,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:35,618 INFO L482 AbstractCegarLoop]: Abstraction has 5069 states and 24091 transitions. [2021-05-22 02:09:35,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:35,619 INFO L276 IsEmpty]: Start isEmpty. Operand 5069 states and 24091 transitions. [2021-05-22 02:09:35,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:35,627 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:35,627 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:35,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1468 [2021-05-22 02:09:35,627 INFO L430 AbstractCegarLoop]: === Iteration 1470 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:35,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:35,627 INFO L82 PathProgramCache]: Analyzing trace with hash -73192791, now seen corresponding path program 1465 times [2021-05-22 02:09:35,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:35,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804105452] [2021-05-22 02:09:35,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:35,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:35,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804105452] [2021-05-22 02:09:35,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804105452] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:35,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:35,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:35,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029506669] [2021-05-22 02:09:35,745 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:35,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:35,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:35,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:35,745 INFO L87 Difference]: Start difference. First operand 5069 states and 24091 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:35,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:35,863 INFO L93 Difference]: Finished difference Result 11805 states and 52778 transitions. [2021-05-22 02:09:35,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:35,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:35,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:35,893 INFO L225 Difference]: With dead ends: 11805 [2021-05-22 02:09:35,893 INFO L226 Difference]: Without dead ends: 11390 [2021-05-22 02:09:35,893 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:36,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11390 states. [2021-05-22 02:09:36,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11390 to 5233. [2021-05-22 02:09:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5233 states, 5232 states have (on average 4.7452217125382266) internal successors, (24827), 5232 states have internal predecessors, (24827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:36,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5233 states to 5233 states and 24827 transitions. [2021-05-22 02:09:36,124 INFO L78 Accepts]: Start accepts. Automaton has 5233 states and 24827 transitions. Word has length 29 [2021-05-22 02:09:36,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:36,124 INFO L482 AbstractCegarLoop]: Abstraction has 5233 states and 24827 transitions. [2021-05-22 02:09:36,124 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:36,124 INFO L276 IsEmpty]: Start isEmpty. Operand 5233 states and 24827 transitions. [2021-05-22 02:09:36,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:36,132 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:36,132 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:36,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1469 [2021-05-22 02:09:36,132 INFO L430 AbstractCegarLoop]: === Iteration 1471 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:36,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:36,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1681627817, now seen corresponding path program 1466 times [2021-05-22 02:09:36,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:36,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406953348] [2021-05-22 02:09:36,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:36,250 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:36,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406953348] [2021-05-22 02:09:36,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406953348] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:36,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:36,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:36,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537561553] [2021-05-22 02:09:36,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:36,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:36,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:36,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:36,250 INFO L87 Difference]: Start difference. First operand 5233 states and 24827 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:36,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:36,347 INFO L93 Difference]: Finished difference Result 11932 states and 53257 transitions. [2021-05-22 02:09:36,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:36,347 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:36,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:36,374 INFO L225 Difference]: With dead ends: 11932 [2021-05-22 02:09:36,374 INFO L226 Difference]: Without dead ends: 11310 [2021-05-22 02:09:36,374 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:36,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11310 states. [2021-05-22 02:09:36,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11310 to 5153. [2021-05-22 02:09:36,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.74902950310559) internal successors, (24467), 5152 states have internal predecessors, (24467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:36,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24467 transitions. [2021-05-22 02:09:36,602 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24467 transitions. Word has length 29 [2021-05-22 02:09:36,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:36,602 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24467 transitions. [2021-05-22 02:09:36,602 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:36,602 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24467 transitions. [2021-05-22 02:09:36,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:36,610 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:36,610 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:36,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1470 [2021-05-22 02:09:36,610 INFO L430 AbstractCegarLoop]: === Iteration 1472 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:36,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:36,610 INFO L82 PathProgramCache]: Analyzing trace with hash -292994647, now seen corresponding path program 1467 times [2021-05-22 02:09:36,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:36,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961174331] [2021-05-22 02:09:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:36,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:36,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:36,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961174331] [2021-05-22 02:09:36,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961174331] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:36,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:36,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:36,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588193070] [2021-05-22 02:09:36,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:36,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:36,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:36,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:36,725 INFO L87 Difference]: Start difference. First operand 5153 states and 24467 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:36,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:36,832 INFO L93 Difference]: Finished difference Result 11708 states and 52336 transitions. [2021-05-22 02:09:36,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:36,833 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:36,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:36,860 INFO L225 Difference]: With dead ends: 11708 [2021-05-22 02:09:36,860 INFO L226 Difference]: Without dead ends: 11293 [2021-05-22 02:09:36,861 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:36,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11293 states. [2021-05-22 02:09:37,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11293 to 5201. [2021-05-22 02:09:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 4.7390384615384615) internal successors, (24643), 5200 states have internal predecessors, (24643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:37,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 24643 transitions. [2021-05-22 02:09:37,092 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 24643 transitions. Word has length 29 [2021-05-22 02:09:37,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:37,092 INFO L482 AbstractCegarLoop]: Abstraction has 5201 states and 24643 transitions. [2021-05-22 02:09:37,092 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:37,092 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 24643 transitions. [2021-05-22 02:09:37,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:37,100 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:37,100 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:37,101 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1471 [2021-05-22 02:09:37,101 INFO L430 AbstractCegarLoop]: === Iteration 1473 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:37,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:37,101 INFO L82 PathProgramCache]: Analyzing trace with hash 423668299, now seen corresponding path program 1468 times [2021-05-22 02:09:37,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:37,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91102154] [2021-05-22 02:09:37,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:37,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:37,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91102154] [2021-05-22 02:09:37,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91102154] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:37,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:37,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:37,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766835469] [2021-05-22 02:09:37,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:37,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:37,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:37,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:37,219 INFO L87 Difference]: Start difference. First operand 5201 states and 24643 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:37,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:37,332 INFO L93 Difference]: Finished difference Result 11770 states and 52557 transitions. [2021-05-22 02:09:37,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:37,332 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:37,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:37,360 INFO L225 Difference]: With dead ends: 11770 [2021-05-22 02:09:37,360 INFO L226 Difference]: Without dead ends: 11245 [2021-05-22 02:09:37,360 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:37,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11245 states. [2021-05-22 02:09:37,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11245 to 5153. [2021-05-22 02:09:37,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.744371118012422) internal successors, (24443), 5152 states have internal predecessors, (24443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24443 transitions. [2021-05-22 02:09:37,591 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24443 transitions. Word has length 29 [2021-05-22 02:09:37,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:37,591 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24443 transitions. [2021-05-22 02:09:37,591 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:37,591 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24443 transitions. [2021-05-22 02:09:37,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:37,598 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:37,598 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:37,598 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1472 [2021-05-22 02:09:37,598 INFO L430 AbstractCegarLoop]: === Iteration 1474 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:37,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:37,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1788073397, now seen corresponding path program 1469 times [2021-05-22 02:09:37,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:37,599 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853722601] [2021-05-22 02:09:37,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:37,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:37,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853722601] [2021-05-22 02:09:37,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853722601] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:37,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:37,704 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:37,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796175844] [2021-05-22 02:09:37,704 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:37,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:37,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:37,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:37,704 INFO L87 Difference]: Start difference. First operand 5153 states and 24443 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:37,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:37,818 INFO L93 Difference]: Finished difference Result 12057 states and 53772 transitions. [2021-05-22 02:09:37,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:37,818 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:37,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:37,856 INFO L225 Difference]: With dead ends: 12057 [2021-05-22 02:09:37,856 INFO L226 Difference]: Without dead ends: 11515 [2021-05-22 02:09:37,856 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:37,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11515 states. [2021-05-22 02:09:38,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11515 to 5296. [2021-05-22 02:09:38,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5296 states, 5295 states have (on average 4.714258734655335) internal successors, (24962), 5295 states have internal predecessors, (24962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:38,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5296 states to 5296 states and 24962 transitions. [2021-05-22 02:09:38,096 INFO L78 Accepts]: Start accepts. Automaton has 5296 states and 24962 transitions. Word has length 29 [2021-05-22 02:09:38,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:38,096 INFO L482 AbstractCegarLoop]: Abstraction has 5296 states and 24962 transitions. [2021-05-22 02:09:38,096 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:38,096 INFO L276 IsEmpty]: Start isEmpty. Operand 5296 states and 24962 transitions. [2021-05-22 02:09:38,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:38,105 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:38,105 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:38,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1473 [2021-05-22 02:09:38,105 INFO L430 AbstractCegarLoop]: === Iteration 1475 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:38,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:38,105 INFO L82 PathProgramCache]: Analyzing trace with hash 463556905, now seen corresponding path program 1470 times [2021-05-22 02:09:38,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:38,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153761106] [2021-05-22 02:09:38,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:38,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:38,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:38,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153761106] [2021-05-22 02:09:38,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153761106] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:38,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:38,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:38,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290727730] [2021-05-22 02:09:38,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:38,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:38,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:38,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:38,210 INFO L87 Difference]: Start difference. First operand 5296 states and 24962 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:38,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:38,330 INFO L93 Difference]: Finished difference Result 11992 states and 53403 transitions. [2021-05-22 02:09:38,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:38,330 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:38,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:38,357 INFO L225 Difference]: With dead ends: 11992 [2021-05-22 02:09:38,357 INFO L226 Difference]: Without dead ends: 11316 [2021-05-22 02:09:38,357 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:38,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11316 states. [2021-05-22 02:09:38,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11316 to 5097. [2021-05-22 02:09:38,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5097 states, 5096 states have (on average 4.750981161695448) internal successors, (24211), 5096 states have internal predecessors, (24211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:38,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5097 states to 5097 states and 24211 transitions. [2021-05-22 02:09:38,595 INFO L78 Accepts]: Start accepts. Automaton has 5097 states and 24211 transitions. Word has length 29 [2021-05-22 02:09:38,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:38,596 INFO L482 AbstractCegarLoop]: Abstraction has 5097 states and 24211 transitions. [2021-05-22 02:09:38,596 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:38,596 INFO L276 IsEmpty]: Start isEmpty. Operand 5097 states and 24211 transitions. [2021-05-22 02:09:38,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:38,604 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:38,604 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:38,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1474 [2021-05-22 02:09:38,604 INFO L430 AbstractCegarLoop]: === Iteration 1476 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:38,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:38,605 INFO L82 PathProgramCache]: Analyzing trace with hash 902125131, now seen corresponding path program 1471 times [2021-05-22 02:09:38,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:38,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471898821] [2021-05-22 02:09:38,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:38,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:38,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:38,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471898821] [2021-05-22 02:09:38,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471898821] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:38,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:38,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:38,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776227216] [2021-05-22 02:09:38,720 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:38,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:38,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:38,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:38,721 INFO L87 Difference]: Start difference. First operand 5097 states and 24211 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:38,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:38,847 INFO L93 Difference]: Finished difference Result 11748 states and 52547 transitions. [2021-05-22 02:09:38,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:38,848 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:38,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:38,877 INFO L225 Difference]: With dead ends: 11748 [2021-05-22 02:09:38,877 INFO L226 Difference]: Without dead ends: 11333 [2021-05-22 02:09:38,877 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:39,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11333 states. [2021-05-22 02:09:39,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11333 to 5217. [2021-05-22 02:09:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 4.742139570552148) internal successors, (24735), 5216 states have internal predecessors, (24735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:39,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 24735 transitions. [2021-05-22 02:09:39,107 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 24735 transitions. Word has length 29 [2021-05-22 02:09:39,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:39,107 INFO L482 AbstractCegarLoop]: Abstraction has 5217 states and 24735 transitions. [2021-05-22 02:09:39,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:39,107 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 24735 transitions. [2021-05-22 02:09:39,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:39,114 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:39,114 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:39,114 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1475 [2021-05-22 02:09:39,115 INFO L430 AbstractCegarLoop]: === Iteration 1477 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:39,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:39,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1638021557, now seen corresponding path program 1472 times [2021-05-22 02:09:39,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:39,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562812126] [2021-05-22 02:09:39,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:39,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:39,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562812126] [2021-05-22 02:09:39,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562812126] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:39,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:39,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:39,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725415244] [2021-05-22 02:09:39,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:39,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:39,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:39,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:39,229 INFO L87 Difference]: Start difference. First operand 5217 states and 24735 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:39,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:39,318 INFO L93 Difference]: Finished difference Result 11875 states and 53026 transitions. [2021-05-22 02:09:39,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:39,319 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:39,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:39,346 INFO L225 Difference]: With dead ends: 11875 [2021-05-22 02:09:39,346 INFO L226 Difference]: Without dead ends: 11253 [2021-05-22 02:09:39,346 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:39,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11253 states. [2021-05-22 02:09:39,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11253 to 5137. [2021-05-22 02:09:39,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.745911214953271) internal successors, (24375), 5136 states have internal predecessors, (24375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:39,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24375 transitions. [2021-05-22 02:09:39,575 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24375 transitions. Word has length 29 [2021-05-22 02:09:39,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:39,575 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24375 transitions. [2021-05-22 02:09:39,575 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:39,575 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24375 transitions. [2021-05-22 02:09:39,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:39,583 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:39,583 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:39,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1476 [2021-05-22 02:09:39,583 INFO L430 AbstractCegarLoop]: === Iteration 1478 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:39,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:39,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1337297513, now seen corresponding path program 1473 times [2021-05-22 02:09:39,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:39,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263498610] [2021-05-22 02:09:39,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:39,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:39,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:39,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263498610] [2021-05-22 02:09:39,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263498610] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:39,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:39,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:39,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767605780] [2021-05-22 02:09:39,684 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:39,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:39,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:39,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:39,684 INFO L87 Difference]: Start difference. First operand 5137 states and 24375 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:39,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:39,789 INFO L93 Difference]: Finished difference Result 11645 states and 52088 transitions. [2021-05-22 02:09:39,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:39,789 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:39,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:39,816 INFO L225 Difference]: With dead ends: 11645 [2021-05-22 02:09:39,816 INFO L226 Difference]: Without dead ends: 11230 [2021-05-22 02:09:39,816 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:39,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11230 states. [2021-05-22 02:09:40,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11230 to 5185. [2021-05-22 02:09:40,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 4.7359182098765435) internal successors, (24551), 5184 states have internal predecessors, (24551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:40,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 24551 transitions. [2021-05-22 02:09:40,046 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 24551 transitions. Word has length 29 [2021-05-22 02:09:40,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:40,046 INFO L482 AbstractCegarLoop]: Abstraction has 5185 states and 24551 transitions. [2021-05-22 02:09:40,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:40,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 24551 transitions. [2021-05-22 02:09:40,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:40,054 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:40,054 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:40,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1477 [2021-05-22 02:09:40,055 INFO L430 AbstractCegarLoop]: === Iteration 1479 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:40,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:40,055 INFO L82 PathProgramCache]: Analyzing trace with hash 206944651, now seen corresponding path program 1474 times [2021-05-22 02:09:40,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:40,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425782250] [2021-05-22 02:09:40,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:40,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:40,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425782250] [2021-05-22 02:09:40,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425782250] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:40,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:40,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:40,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570749617] [2021-05-22 02:09:40,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:40,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:40,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:40,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:40,162 INFO L87 Difference]: Start difference. First operand 5185 states and 24551 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:40,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:40,270 INFO L93 Difference]: Finished difference Result 11701 states and 52292 transitions. [2021-05-22 02:09:40,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:40,270 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:40,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:40,297 INFO L225 Difference]: With dead ends: 11701 [2021-05-22 02:09:40,297 INFO L226 Difference]: Without dead ends: 11182 [2021-05-22 02:09:40,297 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:40,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11182 states. [2021-05-22 02:09:40,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11182 to 5137. [2021-05-22 02:09:40,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 5136 states have (on average 4.741238317757009) internal successors, (24351), 5136 states have internal predecessors, (24351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:40,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 24351 transitions. [2021-05-22 02:09:40,523 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 24351 transitions. Word has length 29 [2021-05-22 02:09:40,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:40,523 INFO L482 AbstractCegarLoop]: Abstraction has 5137 states and 24351 transitions. [2021-05-22 02:09:40,523 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:40,523 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 24351 transitions. [2021-05-22 02:09:40,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:40,530 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:40,530 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:40,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1478 [2021-05-22 02:09:40,530 INFO L430 AbstractCegarLoop]: === Iteration 1480 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:40,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:40,530 INFO L82 PathProgramCache]: Analyzing trace with hash 273574283, now seen corresponding path program 1475 times [2021-05-22 02:09:40,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:40,530 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256089513] [2021-05-22 02:09:40,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:40,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:40,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:40,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256089513] [2021-05-22 02:09:40,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256089513] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:40,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:40,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:40,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300299214] [2021-05-22 02:09:40,644 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:40,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:40,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:40,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:40,644 INFO L87 Difference]: Start difference. First operand 5137 states and 24351 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:40,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:40,733 INFO L93 Difference]: Finished difference Result 11959 states and 53402 transitions. [2021-05-22 02:09:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:40,733 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:40,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:40,760 INFO L225 Difference]: With dead ends: 11959 [2021-05-22 02:09:40,760 INFO L226 Difference]: Without dead ends: 11417 [2021-05-22 02:09:40,760 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:40,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11417 states. [2021-05-22 02:09:40,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11417 to 5245. [2021-05-22 02:09:40,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5245 states, 5244 states have (on average 4.719870327993898) internal successors, (24751), 5244 states have internal predecessors, (24751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:40,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 24751 transitions. [2021-05-22 02:09:40,986 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 24751 transitions. Word has length 29 [2021-05-22 02:09:40,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:40,987 INFO L482 AbstractCegarLoop]: Abstraction has 5245 states and 24751 transitions. [2021-05-22 02:09:40,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:40,987 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 24751 transitions. [2021-05-22 02:09:40,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:40,995 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:40,995 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:40,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1479 [2021-05-22 02:09:40,995 INFO L430 AbstractCegarLoop]: === Iteration 1481 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:40,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:40,995 INFO L82 PathProgramCache]: Analyzing trace with hash 183814633, now seen corresponding path program 1476 times [2021-05-22 02:09:40,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:40,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655246667] [2021-05-22 02:09:40,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:41,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:41,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:41,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655246667] [2021-05-22 02:09:41,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655246667] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:41,109 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:41,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:41,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406321042] [2021-05-22 02:09:41,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:41,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:41,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:41,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:41,110 INFO L87 Difference]: Start difference. First operand 5245 states and 24751 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:41,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:41,224 INFO L93 Difference]: Finished difference Result 11888 states and 53019 transitions. [2021-05-22 02:09:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:41,224 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:41,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:41,251 INFO L225 Difference]: With dead ends: 11888 [2021-05-22 02:09:41,251 INFO L226 Difference]: Without dead ends: 11269 [2021-05-22 02:09:41,251 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:41,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11269 states. [2021-05-22 02:09:41,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11269 to 5097. [2021-05-22 02:09:41,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5097 states, 5096 states have (on average 4.747056514913658) internal successors, (24191), 5096 states have internal predecessors, (24191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:41,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5097 states to 5097 states and 24191 transitions. [2021-05-22 02:09:41,478 INFO L78 Accepts]: Start accepts. Automaton has 5097 states and 24191 transitions. Word has length 29 [2021-05-22 02:09:41,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:41,478 INFO L482 AbstractCegarLoop]: Abstraction has 5097 states and 24191 transitions. [2021-05-22 02:09:41,478 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand 5097 states and 24191 transitions. [2021-05-22 02:09:41,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:41,486 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:41,486 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:41,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1480 [2021-05-22 02:09:41,486 INFO L430 AbstractCegarLoop]: === Iteration 1482 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:41,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:41,486 INFO L82 PathProgramCache]: Analyzing trace with hash -2141802135, now seen corresponding path program 1477 times [2021-05-22 02:09:41,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:41,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199775282] [2021-05-22 02:09:41,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:41,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:41,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:41,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199775282] [2021-05-22 02:09:41,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199775282] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:41,592 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:41,592 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:41,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832115000] [2021-05-22 02:09:41,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:41,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:41,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:41,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:41,593 INFO L87 Difference]: Start difference. First operand 5097 states and 24191 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:41,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:41,703 INFO L93 Difference]: Finished difference Result 11506 states and 51499 transitions. [2021-05-22 02:09:41,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:41,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:41,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:41,731 INFO L225 Difference]: With dead ends: 11506 [2021-05-22 02:09:41,731 INFO L226 Difference]: Without dead ends: 11091 [2021-05-22 02:09:41,731 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:41,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11091 states. [2021-05-22 02:09:41,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11091 to 5169. [2021-05-22 02:09:41,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.738970588235294) internal successors, (24491), 5168 states have internal predecessors, (24491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24491 transitions. [2021-05-22 02:09:41,961 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24491 transitions. Word has length 29 [2021-05-22 02:09:41,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:41,961 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24491 transitions. [2021-05-22 02:09:41,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:41,961 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24491 transitions. [2021-05-22 02:09:41,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:41,969 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:41,969 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:41,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1481 [2021-05-22 02:09:41,969 INFO L430 AbstractCegarLoop]: === Iteration 1483 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:41,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:41,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1425139189, now seen corresponding path program 1478 times [2021-05-22 02:09:41,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:41,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140658003] [2021-05-22 02:09:41,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:42,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:42,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:42,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140658003] [2021-05-22 02:09:42,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140658003] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:42,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:42,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:42,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775835074] [2021-05-22 02:09:42,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:42,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:42,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:42,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:42,076 INFO L87 Difference]: Start difference. First operand 5169 states and 24491 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:42,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:42,184 INFO L93 Difference]: Finished difference Result 11568 states and 51720 transitions. [2021-05-22 02:09:42,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:42,184 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:42,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:42,210 INFO L225 Difference]: With dead ends: 11568 [2021-05-22 02:09:42,211 INFO L226 Difference]: Without dead ends: 11043 [2021-05-22 02:09:42,211 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:42,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11043 states. [2021-05-22 02:09:42,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11043 to 5121. [2021-05-22 02:09:42,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5121 states, 5120 states have (on average 4.7443359375) internal successors, (24291), 5120 states have internal predecessors, (24291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:42,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5121 states to 5121 states and 24291 transitions. [2021-05-22 02:09:42,437 INFO L78 Accepts]: Start accepts. Automaton has 5121 states and 24291 transitions. Word has length 29 [2021-05-22 02:09:42,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:42,438 INFO L482 AbstractCegarLoop]: Abstraction has 5121 states and 24291 transitions. [2021-05-22 02:09:42,438 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:42,438 INFO L276 IsEmpty]: Start isEmpty. Operand 5121 states and 24291 transitions. [2021-05-22 02:09:42,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:42,446 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:42,446 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:42,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1482 [2021-05-22 02:09:42,446 INFO L430 AbstractCegarLoop]: === Iteration 1484 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:42,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:42,446 INFO L82 PathProgramCache]: Analyzing trace with hash 286147787, now seen corresponding path program 1479 times [2021-05-22 02:09:42,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:42,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196912730] [2021-05-22 02:09:42,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:42,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:42,537 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:42,537 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196912730] [2021-05-22 02:09:42,537 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196912730] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:42,537 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:42,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:42,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081915689] [2021-05-22 02:09:42,537 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:42,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:42,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:42,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:42,538 INFO L87 Difference]: Start difference. First operand 5121 states and 24291 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:42,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:42,642 INFO L93 Difference]: Finished difference Result 11500 states and 51458 transitions. [2021-05-22 02:09:42,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:42,642 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:42,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:42,668 INFO L225 Difference]: With dead ends: 11500 [2021-05-22 02:09:42,668 INFO L226 Difference]: Without dead ends: 11085 [2021-05-22 02:09:42,668 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:42,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11085 states. [2021-05-22 02:09:42,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11085 to 5169. [2021-05-22 02:09:42,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 4.734326625386997) internal successors, (24467), 5168 states have internal predecessors, (24467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:42,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 24467 transitions. [2021-05-22 02:09:42,893 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 24467 transitions. Word has length 29 [2021-05-22 02:09:42,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:42,893 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 24467 transitions. [2021-05-22 02:09:42,893 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:42,893 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 24467 transitions. [2021-05-22 02:09:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:42,901 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:42,902 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:42,902 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1483 [2021-05-22 02:09:42,902 INFO L430 AbstractCegarLoop]: === Iteration 1485 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:42,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:42,902 INFO L82 PathProgramCache]: Analyzing trace with hash -569241461, now seen corresponding path program 1480 times [2021-05-22 02:09:42,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:42,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103871786] [2021-05-22 02:09:42,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:42,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:42,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103871786] [2021-05-22 02:09:42,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103871786] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:42,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:42,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:42,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934735181] [2021-05-22 02:09:42,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:42,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:42,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:42,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:42,995 INFO L87 Difference]: Start difference. First operand 5169 states and 24467 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:43,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:43,103 INFO L93 Difference]: Finished difference Result 11556 states and 51662 transitions. [2021-05-22 02:09:43,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:43,103 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:43,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:43,129 INFO L225 Difference]: With dead ends: 11556 [2021-05-22 02:09:43,130 INFO L226 Difference]: Without dead ends: 11037 [2021-05-22 02:09:43,130 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:43,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11037 states. [2021-05-22 02:09:43,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11037 to 5121. [2021-05-22 02:09:43,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5121 states, 5120 states have (on average 4.7396484375) internal successors, (24267), 5120 states have internal predecessors, (24267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:43,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5121 states to 5121 states and 24267 transitions. [2021-05-22 02:09:43,433 INFO L78 Accepts]: Start accepts. Automaton has 5121 states and 24267 transitions. Word has length 29 [2021-05-22 02:09:43,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:43,433 INFO L482 AbstractCegarLoop]: Abstraction has 5121 states and 24267 transitions. [2021-05-22 02:09:43,433 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:43,433 INFO L276 IsEmpty]: Start isEmpty. Operand 5121 states and 24267 transitions. [2021-05-22 02:09:43,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:43,442 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:43,443 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:43,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1484 [2021-05-22 02:09:43,443 INFO L430 AbstractCegarLoop]: === Iteration 1486 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:43,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:43,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1067513683, now seen corresponding path program 1481 times [2021-05-22 02:09:43,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:43,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710193626] [2021-05-22 02:09:43,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:43,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:43,536 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:43,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710193626] [2021-05-22 02:09:43,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710193626] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:43,536 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:43,536 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:43,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900069998] [2021-05-22 02:09:43,536 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:43,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:43,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:43,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:43,536 INFO L87 Difference]: Start difference. First operand 5121 states and 24267 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:43,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:43,646 INFO L93 Difference]: Finished difference Result 11652 states and 52112 transitions. [2021-05-22 02:09:43,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:43,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:43,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:43,674 INFO L225 Difference]: With dead ends: 11652 [2021-05-22 02:09:43,674 INFO L226 Difference]: Without dead ends: 11175 [2021-05-22 02:09:43,674 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:43,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11175 states. [2021-05-22 02:09:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11175 to 5197. [2021-05-22 02:09:43,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5196 states have (on average 4.725750577367205) internal successors, (24555), 5196 states have internal predecessors, (24555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:43,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 24555 transitions. [2021-05-22 02:09:43,900 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 24555 transitions. Word has length 29 [2021-05-22 02:09:43,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:43,900 INFO L482 AbstractCegarLoop]: Abstraction has 5197 states and 24555 transitions. [2021-05-22 02:09:43,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:43,900 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 24555 transitions. [2021-05-22 02:09:43,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:43,908 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:43,908 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:43,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1485 [2021-05-22 02:09:43,908 INFO L430 AbstractCegarLoop]: === Iteration 1487 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:43,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:43,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1808465781, now seen corresponding path program 1482 times [2021-05-22 02:09:43,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:43,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981839710] [2021-05-22 02:09:43,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:43,998 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:43,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981839710] [2021-05-22 02:09:43,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981839710] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:43,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:43,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:43,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566886378] [2021-05-22 02:09:43,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:43,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:43,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:43,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:43,999 INFO L87 Difference]: Start difference. First operand 5197 states and 24555 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:44,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:44,108 INFO L93 Difference]: Finished difference Result 11646 states and 52019 transitions. [2021-05-22 02:09:44,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:44,109 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:44,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:44,135 INFO L225 Difference]: With dead ends: 11646 [2021-05-22 02:09:44,135 INFO L226 Difference]: Without dead ends: 11075 [2021-05-22 02:09:44,136 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:44,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11075 states. [2021-05-22 02:09:44,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11075 to 5097. [2021-05-22 02:09:44,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5097 states, 5096 states have (on average 4.744701726844584) internal successors, (24179), 5096 states have internal predecessors, (24179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5097 states to 5097 states and 24179 transitions. [2021-05-22 02:09:44,373 INFO L78 Accepts]: Start accepts. Automaton has 5097 states and 24179 transitions. Word has length 29 [2021-05-22 02:09:44,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:44,373 INFO L482 AbstractCegarLoop]: Abstraction has 5097 states and 24179 transitions. [2021-05-22 02:09:44,373 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:44,373 INFO L276 IsEmpty]: Start isEmpty. Operand 5097 states and 24179 transitions. [2021-05-22 02:09:44,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:44,381 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:44,381 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:44,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1486 [2021-05-22 02:09:44,381 INFO L430 AbstractCegarLoop]: === Iteration 1488 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:44,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:44,381 INFO L82 PathProgramCache]: Analyzing trace with hash -2133145427, now seen corresponding path program 1483 times [2021-05-22 02:09:44,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:44,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618654578] [2021-05-22 02:09:44,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:44,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:44,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618654578] [2021-05-22 02:09:44,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618654578] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:44,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:44,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:44,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673689692] [2021-05-22 02:09:44,476 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:44,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:44,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:44,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:44,476 INFO L87 Difference]: Start difference. First operand 5097 states and 24179 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:44,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:44,569 INFO L93 Difference]: Finished difference Result 12183 states and 54385 transitions. [2021-05-22 02:09:44,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:44,569 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:44,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:44,597 INFO L225 Difference]: With dead ends: 12183 [2021-05-22 02:09:44,598 INFO L226 Difference]: Without dead ends: 11641 [2021-05-22 02:09:44,598 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 101.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:44,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11641 states. [2021-05-22 02:09:44,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11641 to 5310. [2021-05-22 02:09:44,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5310 states, 5309 states have (on average 4.717084196647203) internal successors, (25043), 5309 states have internal predecessors, (25043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:44,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5310 states to 5310 states and 25043 transitions. [2021-05-22 02:09:44,839 INFO L78 Accepts]: Start accepts. Automaton has 5310 states and 25043 transitions. Word has length 29 [2021-05-22 02:09:44,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:44,839 INFO L482 AbstractCegarLoop]: Abstraction has 5310 states and 25043 transitions. [2021-05-22 02:09:44,839 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:44,839 INFO L276 IsEmpty]: Start isEmpty. Operand 5310 states and 25043 transitions. [2021-05-22 02:09:44,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:44,848 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:44,848 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:44,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1487 [2021-05-22 02:09:44,848 INFO L430 AbstractCegarLoop]: === Iteration 1489 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:44,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:44,848 INFO L82 PathProgramCache]: Analyzing trace with hash 118484875, now seen corresponding path program 1484 times [2021-05-22 02:09:44,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:44,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891375660] [2021-05-22 02:09:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:44,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:44,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:44,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891375660] [2021-05-22 02:09:44,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891375660] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:44,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:44,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:44,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059861758] [2021-05-22 02:09:44,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:44,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:44,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:44,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:44,943 INFO L87 Difference]: Start difference. First operand 5310 states and 25043 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:45,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:45,046 INFO L93 Difference]: Finished difference Result 12118 states and 54016 transitions. [2021-05-22 02:09:45,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:45,046 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:45,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:45,074 INFO L225 Difference]: With dead ends: 12118 [2021-05-22 02:09:45,074 INFO L226 Difference]: Without dead ends: 11498 [2021-05-22 02:09:45,074 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:45,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11498 states. [2021-05-22 02:09:45,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11498 to 5167. [2021-05-22 02:09:45,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.733643050716221) internal successors, (24454), 5166 states have internal predecessors, (24454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:45,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24454 transitions. [2021-05-22 02:09:45,310 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24454 transitions. Word has length 29 [2021-05-22 02:09:45,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:45,310 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24454 transitions. [2021-05-22 02:09:45,310 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:45,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24454 transitions. [2021-05-22 02:09:45,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:45,318 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:45,318 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:45,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1488 [2021-05-22 02:09:45,319 INFO L430 AbstractCegarLoop]: === Iteration 1490 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:45,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:45,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1223540469, now seen corresponding path program 1485 times [2021-05-22 02:09:45,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:45,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943464426] [2021-05-22 02:09:45,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:45,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:45,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943464426] [2021-05-22 02:09:45,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943464426] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:45,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:45,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:45,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149322086] [2021-05-22 02:09:45,425 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:45,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:45,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:45,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:45,426 INFO L87 Difference]: Start difference. First operand 5167 states and 24454 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:45,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:45,517 INFO L93 Difference]: Finished difference Result 12142 states and 54176 transitions. [2021-05-22 02:09:45,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:45,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:45,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:45,546 INFO L225 Difference]: With dead ends: 12142 [2021-05-22 02:09:45,547 INFO L226 Difference]: Without dead ends: 11600 [2021-05-22 02:09:45,547 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:45,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11600 states. [2021-05-22 02:09:45,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11600 to 5275. [2021-05-22 02:09:45,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5275 states, 5274 states have (on average 4.712552142586272) internal successors, (24854), 5274 states have internal predecessors, (24854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:45,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5275 states to 5275 states and 24854 transitions. [2021-05-22 02:09:45,789 INFO L78 Accepts]: Start accepts. Automaton has 5275 states and 24854 transitions. Word has length 29 [2021-05-22 02:09:45,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:45,789 INFO L482 AbstractCegarLoop]: Abstraction has 5275 states and 24854 transitions. [2021-05-22 02:09:45,789 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:45,789 INFO L276 IsEmpty]: Start isEmpty. Operand 5275 states and 24854 transitions. [2021-05-22 02:09:45,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:45,798 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:45,798 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:45,798 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1489 [2021-05-22 02:09:45,798 INFO L430 AbstractCegarLoop]: === Iteration 1491 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:45,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:45,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1304430325, now seen corresponding path program 1486 times [2021-05-22 02:09:45,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:45,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641520835] [2021-05-22 02:09:45,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:45,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:45,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:45,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641520835] [2021-05-22 02:09:45,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641520835] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:45,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:45,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:45,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112530946] [2021-05-22 02:09:45,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:45,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:45,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:45,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:45,905 INFO L87 Difference]: Start difference. First operand 5275 states and 24854 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:46,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:46,015 INFO L93 Difference]: Finished difference Result 12071 states and 53793 transitions. [2021-05-22 02:09:46,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:46,015 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:46,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:46,043 INFO L225 Difference]: With dead ends: 12071 [2021-05-22 02:09:46,044 INFO L226 Difference]: Without dead ends: 11492 [2021-05-22 02:09:46,044 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:46,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11492 states. [2021-05-22 02:09:46,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11492 to 5167. [2021-05-22 02:09:46,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5166 states have (on average 4.723190089043747) internal successors, (24400), 5166 states have internal predecessors, (24400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:46,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 24400 transitions. [2021-05-22 02:09:46,280 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 24400 transitions. Word has length 29 [2021-05-22 02:09:46,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:46,280 INFO L482 AbstractCegarLoop]: Abstraction has 5167 states and 24400 transitions. [2021-05-22 02:09:46,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:46,281 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 24400 transitions. [2021-05-22 02:09:46,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:46,288 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:46,288 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:46,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1490 [2021-05-22 02:09:46,289 INFO L430 AbstractCegarLoop]: === Iteration 1492 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:46,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:46,289 INFO L82 PathProgramCache]: Analyzing trace with hash -241192855, now seen corresponding path program 1487 times [2021-05-22 02:09:46,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:46,289 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181611050] [2021-05-22 02:09:46,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:46,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:46,382 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:46,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181611050] [2021-05-22 02:09:46,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181611050] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:46,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:46,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:46,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044442089] [2021-05-22 02:09:46,382 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:46,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:46,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:46,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:46,382 INFO L87 Difference]: Start difference. First operand 5167 states and 24400 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:46,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:46,499 INFO L93 Difference]: Finished difference Result 11980 states and 53462 transitions. [2021-05-22 02:09:46,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:46,500 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:46,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:46,527 INFO L225 Difference]: With dead ends: 11980 [2021-05-22 02:09:46,527 INFO L226 Difference]: Without dead ends: 11503 [2021-05-22 02:09:46,527 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:46,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11503 states. [2021-05-22 02:09:46,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11503 to 5243. [2021-05-22 02:09:46,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 5242 states have (on average 4.709652804273178) internal successors, (24688), 5242 states have internal predecessors, (24688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:46,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 24688 transitions. [2021-05-22 02:09:46,759 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 24688 transitions. Word has length 29 [2021-05-22 02:09:46,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:46,759 INFO L482 AbstractCegarLoop]: Abstraction has 5243 states and 24688 transitions. [2021-05-22 02:09:46,759 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:46,759 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 24688 transitions. [2021-05-22 02:09:46,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:46,767 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:46,767 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:46,767 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1491 [2021-05-22 02:09:46,767 INFO L430 AbstractCegarLoop]: === Iteration 1493 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:46,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:46,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1735871413, now seen corresponding path program 1488 times [2021-05-22 02:09:46,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:46,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677944093] [2021-05-22 02:09:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:46,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:46,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677944093] [2021-05-22 02:09:46,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677944093] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:46,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:46,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:46,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775779607] [2021-05-22 02:09:46,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:46,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:46,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:46,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:46,861 INFO L87 Difference]: Start difference. First operand 5243 states and 24688 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:46,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:46,975 INFO L93 Difference]: Finished difference Result 11974 states and 53369 transitions. [2021-05-22 02:09:46,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:46,975 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:46,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:47,003 INFO L225 Difference]: With dead ends: 11974 [2021-05-22 02:09:47,003 INFO L226 Difference]: Without dead ends: 11329 [2021-05-22 02:09:47,003 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:47,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11329 states. [2021-05-22 02:09:47,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11329 to 5069. [2021-05-22 02:09:47,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5069 states, 5068 states have (on average 4.750789265982636) internal successors, (24077), 5068 states have internal predecessors, (24077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:47,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5069 states to 5069 states and 24077 transitions. [2021-05-22 02:09:47,232 INFO L78 Accepts]: Start accepts. Automaton has 5069 states and 24077 transitions. Word has length 29 [2021-05-22 02:09:47,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:47,232 INFO L482 AbstractCegarLoop]: Abstraction has 5069 states and 24077 transitions. [2021-05-22 02:09:47,232 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:47,232 INFO L276 IsEmpty]: Start isEmpty. Operand 5069 states and 24077 transitions. [2021-05-22 02:09:47,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:47,240 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:47,240 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:47,240 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1492 [2021-05-22 02:09:47,240 INFO L430 AbstractCegarLoop]: === Iteration 1494 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:47,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:47,240 INFO L82 PathProgramCache]: Analyzing trace with hash -646382901, now seen corresponding path program 1489 times [2021-05-22 02:09:47,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:47,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660255011] [2021-05-22 02:09:47,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:47,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:47,355 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:47,355 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660255011] [2021-05-22 02:09:47,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660255011] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:47,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:47,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:47,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826706381] [2021-05-22 02:09:47,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:47,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:47,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:47,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:47,356 INFO L87 Difference]: Start difference. First operand 5069 states and 24077 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:47,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:47,474 INFO L93 Difference]: Finished difference Result 11679 states and 52296 transitions. [2021-05-22 02:09:47,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:47,474 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:47,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:47,501 INFO L225 Difference]: With dead ends: 11679 [2021-05-22 02:09:47,502 INFO L226 Difference]: Without dead ends: 11264 [2021-05-22 02:09:47,502 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:47,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11264 states. [2021-05-22 02:09:47,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11264 to 5209. [2021-05-22 02:09:47,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.745199692780338) internal successors, (24713), 5208 states have internal predecessors, (24713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24713 transitions. [2021-05-22 02:09:47,743 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24713 transitions. Word has length 29 [2021-05-22 02:09:47,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:47,743 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24713 transitions. [2021-05-22 02:09:47,743 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:47,743 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24713 transitions. [2021-05-22 02:09:47,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:47,751 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:47,751 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:47,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1493 [2021-05-22 02:09:47,751 INFO L430 AbstractCegarLoop]: === Iteration 1495 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:47,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:47,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1108437707, now seen corresponding path program 1490 times [2021-05-22 02:09:47,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:47,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745172306] [2021-05-22 02:09:47,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:47,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:47,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745172306] [2021-05-22 02:09:47,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745172306] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:47,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:47,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:47,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731955687] [2021-05-22 02:09:47,865 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:47,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:47,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:47,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:47,865 INFO L87 Difference]: Start difference. First operand 5209 states and 24713 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:47,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:47,955 INFO L93 Difference]: Finished difference Result 11806 states and 52775 transitions. [2021-05-22 02:09:47,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:47,956 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:47,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:47,984 INFO L225 Difference]: With dead ends: 11806 [2021-05-22 02:09:47,985 INFO L226 Difference]: Without dead ends: 11184 [2021-05-22 02:09:47,985 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:48,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11184 states. [2021-05-22 02:09:48,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11184 to 5129. [2021-05-22 02:09:48,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.74902496099844) internal successors, (24353), 5128 states have internal predecessors, (24353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:48,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24353 transitions. [2021-05-22 02:09:48,213 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24353 transitions. Word has length 29 [2021-05-22 02:09:48,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:48,213 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24353 transitions. [2021-05-22 02:09:48,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:48,213 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24353 transitions. [2021-05-22 02:09:48,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:48,221 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:48,221 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:48,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1494 [2021-05-22 02:09:48,221 INFO L430 AbstractCegarLoop]: === Iteration 1496 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:48,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:48,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1761080937, now seen corresponding path program 1491 times [2021-05-22 02:09:48,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:48,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073108221] [2021-05-22 02:09:48,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:48,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:48,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073108221] [2021-05-22 02:09:48,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073108221] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:48,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:48,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:48,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819280363] [2021-05-22 02:09:48,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:48,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:48,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:48,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:48,335 INFO L87 Difference]: Start difference. First operand 5129 states and 24353 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:48,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:48,449 INFO L93 Difference]: Finished difference Result 11580 states and 51849 transitions. [2021-05-22 02:09:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:48,449 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:48,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:48,476 INFO L225 Difference]: With dead ends: 11580 [2021-05-22 02:09:48,476 INFO L226 Difference]: Without dead ends: 11165 [2021-05-22 02:09:48,476 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:48,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11165 states. [2021-05-22 02:09:48,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11165 to 5177. [2021-05-22 02:09:48,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5177 states, 5176 states have (on average 4.7389876352395675) internal successors, (24529), 5176 states have internal predecessors, (24529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5177 states to 5177 states and 24529 transitions. [2021-05-22 02:09:48,705 INFO L78 Accepts]: Start accepts. Automaton has 5177 states and 24529 transitions. Word has length 29 [2021-05-22 02:09:48,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:48,705 INFO L482 AbstractCegarLoop]: Abstraction has 5177 states and 24529 transitions. [2021-05-22 02:09:48,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:48,705 INFO L276 IsEmpty]: Start isEmpty. Operand 5177 states and 24529 transitions. [2021-05-22 02:09:48,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:48,713 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:48,713 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:48,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1495 [2021-05-22 02:09:48,713 INFO L430 AbstractCegarLoop]: === Iteration 1497 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:48,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:48,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1246400011, now seen corresponding path program 1492 times [2021-05-22 02:09:48,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:48,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886280415] [2021-05-22 02:09:48,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:48,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:48,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:48,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886280415] [2021-05-22 02:09:48,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886280415] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:48,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:48,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:48,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682773544] [2021-05-22 02:09:48,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:48,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:48,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:48,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:48,829 INFO L87 Difference]: Start difference. First operand 5177 states and 24529 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:48,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:48,940 INFO L93 Difference]: Finished difference Result 11640 states and 52065 transitions. [2021-05-22 02:09:48,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:48,940 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:48,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:48,966 INFO L225 Difference]: With dead ends: 11640 [2021-05-22 02:09:48,967 INFO L226 Difference]: Without dead ends: 11117 [2021-05-22 02:09:48,967 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:49,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11117 states. [2021-05-22 02:09:49,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11117 to 5129. [2021-05-22 02:09:49,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.744344773790951) internal successors, (24329), 5128 states have internal predecessors, (24329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:49,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24329 transitions. [2021-05-22 02:09:49,198 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24329 transitions. Word has length 29 [2021-05-22 02:09:49,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:49,198 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24329 transitions. [2021-05-22 02:09:49,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:49,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24329 transitions. [2021-05-22 02:09:49,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:49,206 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:49,207 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:49,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1496 [2021-05-22 02:09:49,207 INFO L430 AbstractCegarLoop]: === Iteration 1498 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:49,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:49,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1985228299, now seen corresponding path program 1493 times [2021-05-22 02:09:49,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:49,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225670621] [2021-05-22 02:09:49,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:49,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:49,309 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:49,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225670621] [2021-05-22 02:09:49,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225670621] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:49,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:49,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:49,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298309847] [2021-05-22 02:09:49,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:49,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:49,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:49,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:49,310 INFO L87 Difference]: Start difference. First operand 5129 states and 24329 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:49,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:49,415 INFO L93 Difference]: Finished difference Result 11896 states and 53170 transitions. [2021-05-22 02:09:49,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:49,415 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:49,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:49,442 INFO L225 Difference]: With dead ends: 11896 [2021-05-22 02:09:49,442 INFO L226 Difference]: Without dead ends: 11354 [2021-05-22 02:09:49,442 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 109.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:49,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11354 states. [2021-05-22 02:09:49,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11354 to 5239. [2021-05-22 02:09:49,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5239 states, 5238 states have (on average 4.722031309660176) internal successors, (24734), 5238 states have internal predecessors, (24734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:49,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5239 states to 5239 states and 24734 transitions. [2021-05-22 02:09:49,672 INFO L78 Accepts]: Start accepts. Automaton has 5239 states and 24734 transitions. Word has length 29 [2021-05-22 02:09:49,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:49,673 INFO L482 AbstractCegarLoop]: Abstraction has 5239 states and 24734 transitions. [2021-05-22 02:09:49,673 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:49,673 INFO L276 IsEmpty]: Start isEmpty. Operand 5239 states and 24734 transitions. [2021-05-22 02:09:49,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:49,680 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:49,680 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:49,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1497 [2021-05-22 02:09:49,680 INFO L430 AbstractCegarLoop]: === Iteration 1499 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:49,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:49,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1244276201, now seen corresponding path program 1494 times [2021-05-22 02:09:49,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:49,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328659355] [2021-05-22 02:09:49,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:49,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:49,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:49,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328659355] [2021-05-22 02:09:49,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328659355] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:49,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:49,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:49,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486323510] [2021-05-22 02:09:49,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:49,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:49,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:49,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:49,784 INFO L87 Difference]: Start difference. First operand 5239 states and 24734 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:49,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:49,907 INFO L93 Difference]: Finished difference Result 11829 states and 52797 transitions. [2021-05-22 02:09:49,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:49,907 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:49,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:49,934 INFO L225 Difference]: With dead ends: 11829 [2021-05-22 02:09:49,934 INFO L226 Difference]: Without dead ends: 11204 [2021-05-22 02:09:49,934 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:50,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11204 states. [2021-05-22 02:09:50,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11204 to 5089. [2021-05-22 02:09:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 4.750196540880503) internal successors, (24169), 5088 states have internal predecessors, (24169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 24169 transitions. [2021-05-22 02:09:50,171 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 24169 transitions. Word has length 29 [2021-05-22 02:09:50,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:50,171 INFO L482 AbstractCegarLoop]: Abstraction has 5089 states and 24169 transitions. [2021-05-22 02:09:50,171 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:50,171 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 24169 transitions. [2021-05-22 02:09:50,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:50,179 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:50,179 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:50,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1498 [2021-05-22 02:09:50,179 INFO L430 AbstractCegarLoop]: === Iteration 1500 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:50,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:50,179 INFO L82 PathProgramCache]: Analyzing trace with hash 811664169, now seen corresponding path program 1495 times [2021-05-22 02:09:50,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:50,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869690069] [2021-05-22 02:09:50,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:50,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:50,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:50,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869690069] [2021-05-22 02:09:50,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869690069] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:50,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:50,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:50,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934616158] [2021-05-22 02:09:50,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:50,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:50,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:50,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:50,295 INFO L87 Difference]: Start difference. First operand 5089 states and 24169 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:50,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:50,417 INFO L93 Difference]: Finished difference Result 11673 states and 52257 transitions. [2021-05-22 02:09:50,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:50,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:50,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:50,445 INFO L225 Difference]: With dead ends: 11673 [2021-05-22 02:09:50,445 INFO L226 Difference]: Without dead ends: 11258 [2021-05-22 02:09:50,445 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:50,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11258 states. [2021-05-22 02:09:50,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11258 to 5209. [2021-05-22 02:09:50,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5209 states, 5208 states have (on average 4.7413594470046085) internal successors, (24693), 5208 states have internal predecessors, (24693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:50,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5209 states to 5209 states and 24693 transitions. [2021-05-22 02:09:50,675 INFO L78 Accepts]: Start accepts. Automaton has 5209 states and 24693 transitions. Word has length 29 [2021-05-22 02:09:50,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:50,675 INFO L482 AbstractCegarLoop]: Abstraction has 5209 states and 24693 transitions. [2021-05-22 02:09:50,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:50,675 INFO L276 IsEmpty]: Start isEmpty. Operand 5209 states and 24693 transitions. [2021-05-22 02:09:50,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:50,683 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:50,683 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:50,683 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1499 [2021-05-22 02:09:50,683 INFO L430 AbstractCegarLoop]: === Iteration 1501 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:50,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:50,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1728482519, now seen corresponding path program 1496 times [2021-05-22 02:09:50,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:50,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833460692] [2021-05-22 02:09:50,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:50,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:50,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:50,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833460692] [2021-05-22 02:09:50,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833460692] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:50,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:50,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:50,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175677442] [2021-05-22 02:09:50,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:50,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:50,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:50,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:50,801 INFO L87 Difference]: Start difference. First operand 5209 states and 24693 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:50,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:50,896 INFO L93 Difference]: Finished difference Result 11800 states and 52736 transitions. [2021-05-22 02:09:50,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:50,897 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:50,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:50,924 INFO L225 Difference]: With dead ends: 11800 [2021-05-22 02:09:50,924 INFO L226 Difference]: Without dead ends: 11178 [2021-05-22 02:09:50,924 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:51,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11178 states. [2021-05-22 02:09:51,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11178 to 5129. [2021-05-22 02:09:51,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.7451248049922) internal successors, (24333), 5128 states have internal predecessors, (24333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:51,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24333 transitions. [2021-05-22 02:09:51,170 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24333 transitions. Word has length 29 [2021-05-22 02:09:51,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:51,170 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24333 transitions. [2021-05-22 02:09:51,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:51,170 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24333 transitions. [2021-05-22 02:09:51,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:51,179 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:51,179 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:51,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1500 [2021-05-22 02:09:51,179 INFO L430 AbstractCegarLoop]: === Iteration 1502 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:51,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:51,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1492771095, now seen corresponding path program 1497 times [2021-05-22 02:09:51,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:51,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831526328] [2021-05-22 02:09:51,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:51,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:51,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831526328] [2021-05-22 02:09:51,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831526328] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:51,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:51,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:51,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389167002] [2021-05-22 02:09:51,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:51,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:51,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:51,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:51,282 INFO L87 Difference]: Start difference. First operand 5129 states and 24333 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:51,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:51,385 INFO L93 Difference]: Finished difference Result 11570 states and 51798 transitions. [2021-05-22 02:09:51,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:51,385 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:51,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:51,412 INFO L225 Difference]: With dead ends: 11570 [2021-05-22 02:09:51,412 INFO L226 Difference]: Without dead ends: 11155 [2021-05-22 02:09:51,412 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:51,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11155 states. [2021-05-22 02:09:51,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11155 to 5177. [2021-05-22 02:09:51,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5177 states, 5176 states have (on average 4.735123647604327) internal successors, (24509), 5176 states have internal predecessors, (24509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:51,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5177 states to 5177 states and 24509 transitions. [2021-05-22 02:09:51,645 INFO L78 Accepts]: Start accepts. Automaton has 5177 states and 24509 transitions. Word has length 29 [2021-05-22 02:09:51,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:51,645 INFO L482 AbstractCegarLoop]: Abstraction has 5177 states and 24509 transitions. [2021-05-22 02:09:51,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:51,645 INFO L276 IsEmpty]: Start isEmpty. Operand 5177 states and 24509 transitions. [2021-05-22 02:09:51,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:51,653 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:51,653 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:51,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1501 [2021-05-22 02:09:51,653 INFO L430 AbstractCegarLoop]: === Iteration 1503 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:51,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:51,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1671843339, now seen corresponding path program 1498 times [2021-05-22 02:09:51,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:51,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87991842] [2021-05-22 02:09:51,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:51,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:51,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:51,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87991842] [2021-05-22 02:09:51,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87991842] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:51,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:51,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:51,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120462058] [2021-05-22 02:09:51,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:51,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:51,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:51,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:51,756 INFO L87 Difference]: Start difference. First operand 5177 states and 24509 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:51,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:51,861 INFO L93 Difference]: Finished difference Result 11626 states and 52002 transitions. [2021-05-22 02:09:51,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:51,861 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:51,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:51,887 INFO L225 Difference]: With dead ends: 11626 [2021-05-22 02:09:51,887 INFO L226 Difference]: Without dead ends: 11107 [2021-05-22 02:09:51,888 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:52,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11107 states. [2021-05-22 02:09:52,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11107 to 5129. [2021-05-22 02:09:52,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5129 states, 5128 states have (on average 4.7404446177847115) internal successors, (24309), 5128 states have internal predecessors, (24309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:52,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 24309 transitions. [2021-05-22 02:09:52,115 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 24309 transitions. Word has length 29 [2021-05-22 02:09:52,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:52,115 INFO L482 AbstractCegarLoop]: Abstraction has 5129 states and 24309 transitions. [2021-05-22 02:09:52,115 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:52,115 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 24309 transitions. [2021-05-22 02:09:52,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:52,123 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:52,123 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:52,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1502 [2021-05-22 02:09:52,123 INFO L430 AbstractCegarLoop]: === Iteration 1504 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:52,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:52,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1738472971, now seen corresponding path program 1499 times [2021-05-22 02:09:52,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:52,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202329121] [2021-05-22 02:09:52,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:52,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:52,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202329121] [2021-05-22 02:09:52,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202329121] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:52,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:52,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:52,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403211782] [2021-05-22 02:09:52,239 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:52,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:52,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:52,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:52,239 INFO L87 Difference]: Start difference. First operand 5129 states and 24309 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:52,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:52,336 INFO L93 Difference]: Finished difference Result 11884 states and 53112 transitions. [2021-05-22 02:09:52,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:52,336 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:52,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:52,364 INFO L225 Difference]: With dead ends: 11884 [2021-05-22 02:09:52,364 INFO L226 Difference]: Without dead ends: 11342 [2021-05-22 02:09:52,364 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:52,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11342 states. [2021-05-22 02:09:52,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11342 to 5237. [2021-05-22 02:09:52,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5237 states, 5236 states have (on average 4.719060351413293) internal successors, (24709), 5236 states have internal predecessors, (24709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:52,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5237 states to 5237 states and 24709 transitions. [2021-05-22 02:09:52,598 INFO L78 Accepts]: Start accepts. Automaton has 5237 states and 24709 transitions. Word has length 29 [2021-05-22 02:09:52,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:52,598 INFO L482 AbstractCegarLoop]: Abstraction has 5237 states and 24709 transitions. [2021-05-22 02:09:52,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:52,599 INFO L276 IsEmpty]: Start isEmpty. Operand 5237 states and 24709 transitions. [2021-05-22 02:09:52,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:52,607 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:52,607 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:52,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1503 [2021-05-22 02:09:52,607 INFO L430 AbstractCegarLoop]: === Iteration 1505 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:52,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:52,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1648713321, now seen corresponding path program 1500 times [2021-05-22 02:09:52,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:52,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978625467] [2021-05-22 02:09:52,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:52,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:52,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978625467] [2021-05-22 02:09:52,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978625467] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:52,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:52,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:52,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415641614] [2021-05-22 02:09:52,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:52,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:52,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:52,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:52,723 INFO L87 Difference]: Start difference. First operand 5237 states and 24709 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:52,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:52,829 INFO L93 Difference]: Finished difference Result 11813 states and 52729 transitions. [2021-05-22 02:09:52,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:52,829 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:52,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:52,856 INFO L225 Difference]: With dead ends: 11813 [2021-05-22 02:09:52,856 INFO L226 Difference]: Without dead ends: 11194 [2021-05-22 02:09:52,856 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:52,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11194 states. [2021-05-22 02:09:53,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11194 to 5089. [2021-05-22 02:09:53,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 4.74626572327044) internal successors, (24149), 5088 states have internal predecessors, (24149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:53,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 24149 transitions. [2021-05-22 02:09:53,086 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 24149 transitions. Word has length 29 [2021-05-22 02:09:53,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:53,086 INFO L482 AbstractCegarLoop]: Abstraction has 5089 states and 24149 transitions. [2021-05-22 02:09:53,086 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:53,086 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 24149 transitions. [2021-05-22 02:09:53,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:53,093 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:53,093 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:53,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1504 [2021-05-22 02:09:53,094 INFO L430 AbstractCegarLoop]: === Iteration 1506 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:53,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:53,094 INFO L82 PathProgramCache]: Analyzing trace with hash -945054969, now seen corresponding path program 1501 times [2021-05-22 02:09:53,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:53,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323585678] [2021-05-22 02:09:53,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:53,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:53,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323585678] [2021-05-22 02:09:53,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323585678] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:53,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:53,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:53,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132121471] [2021-05-22 02:09:53,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:53,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:53,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:53,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:53,250 INFO L87 Difference]: Start difference. First operand 5089 states and 24149 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:53,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:53,366 INFO L93 Difference]: Finished difference Result 11427 states and 51199 transitions. [2021-05-22 02:09:53,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:53,366 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:53,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:53,392 INFO L225 Difference]: With dead ends: 11427 [2021-05-22 02:09:53,392 INFO L226 Difference]: Without dead ends: 11012 [2021-05-22 02:09:53,392 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 177.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:53,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11012 states. [2021-05-22 02:09:53,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11012 to 5161. [2021-05-22 02:09:53,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.738178294573643) internal successors, (24449), 5160 states have internal predecessors, (24449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:53,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24449 transitions. [2021-05-22 02:09:53,618 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24449 transitions. Word has length 29 [2021-05-22 02:09:53,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:53,618 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24449 transitions. [2021-05-22 02:09:53,618 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:53,618 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24449 transitions. [2021-05-22 02:09:53,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:53,625 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:53,626 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:53,626 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1505 [2021-05-22 02:09:53,626 INFO L430 AbstractCegarLoop]: === Iteration 1507 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:53,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:53,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1459735895, now seen corresponding path program 1502 times [2021-05-22 02:09:53,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:53,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565563177] [2021-05-22 02:09:53,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:53,730 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:53,730 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565563177] [2021-05-22 02:09:53,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565563177] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:53,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:53,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:53,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325111357] [2021-05-22 02:09:53,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:53,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:53,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:53,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:53,730 INFO L87 Difference]: Start difference. First operand 5161 states and 24449 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:53,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:53,843 INFO L93 Difference]: Finished difference Result 11487 states and 51415 transitions. [2021-05-22 02:09:53,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:53,843 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:53,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:53,871 INFO L225 Difference]: With dead ends: 11487 [2021-05-22 02:09:53,871 INFO L226 Difference]: Without dead ends: 10964 [2021-05-22 02:09:53,871 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:53,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10964 states. [2021-05-22 02:09:54,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10964 to 5113. [2021-05-22 02:09:54,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.743544600938967) internal successors, (24249), 5112 states have internal predecessors, (24249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24249 transitions. [2021-05-22 02:09:54,111 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24249 transitions. Word has length 29 [2021-05-22 02:09:54,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:54,111 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24249 transitions. [2021-05-22 02:09:54,111 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:54,112 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24249 transitions. [2021-05-22 02:09:54,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:54,120 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:54,120 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:54,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1506 [2021-05-22 02:09:54,120 INFO L430 AbstractCegarLoop]: === Iteration 1508 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:54,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:54,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1425957015, now seen corresponding path program 1503 times [2021-05-22 02:09:54,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:54,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416400946] [2021-05-22 02:09:54,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:54,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:54,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:54,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416400946] [2021-05-22 02:09:54,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416400946] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:54,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:54,215 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:54,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250710216] [2021-05-22 02:09:54,215 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:54,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:54,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:54,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:54,215 INFO L87 Difference]: Start difference. First operand 5113 states and 24249 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:54,318 INFO L93 Difference]: Finished difference Result 11423 states and 51163 transitions. [2021-05-22 02:09:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:54,318 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:54,344 INFO L225 Difference]: With dead ends: 11423 [2021-05-22 02:09:54,344 INFO L226 Difference]: Without dead ends: 11008 [2021-05-22 02:09:54,344 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:54,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11008 states. [2021-05-22 02:09:54,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11008 to 5161. [2021-05-22 02:09:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5161 states, 5160 states have (on average 4.733527131782946) internal successors, (24425), 5160 states have internal predecessors, (24425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:54,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5161 states to 5161 states and 24425 transitions. [2021-05-22 02:09:54,578 INFO L78 Accepts]: Start accepts. Automaton has 5161 states and 24425 transitions. Word has length 29 [2021-05-22 02:09:54,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:54,578 INFO L482 AbstractCegarLoop]: Abstraction has 5161 states and 24425 transitions. [2021-05-22 02:09:54,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:54,578 INFO L276 IsEmpty]: Start isEmpty. Operand 5161 states and 24425 transitions. [2021-05-22 02:09:54,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:54,587 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:54,587 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:54,587 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1507 [2021-05-22 02:09:54,587 INFO L430 AbstractCegarLoop]: === Iteration 1509 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:54,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:54,587 INFO L82 PathProgramCache]: Analyzing trace with hash 257219113, now seen corresponding path program 1504 times [2021-05-22 02:09:54,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:54,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897366253] [2021-05-22 02:09:54,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:54,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:54,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897366253] [2021-05-22 02:09:54,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897366253] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:54,679 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:54,679 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:54,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630530242] [2021-05-22 02:09:54,679 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:54,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:54,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:54,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:54,679 INFO L87 Difference]: Start difference. First operand 5161 states and 24425 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:54,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:54,784 INFO L93 Difference]: Finished difference Result 11479 states and 51367 transitions. [2021-05-22 02:09:54,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:54,784 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:54,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:54,811 INFO L225 Difference]: With dead ends: 11479 [2021-05-22 02:09:54,811 INFO L226 Difference]: Without dead ends: 10960 [2021-05-22 02:09:54,811 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:54,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10960 states. [2021-05-22 02:09:55,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10960 to 5113. [2021-05-22 02:09:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 4.738849765258216) internal successors, (24225), 5112 states have internal predecessors, (24225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:55,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 24225 transitions. [2021-05-22 02:09:55,040 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 24225 transitions. Word has length 29 [2021-05-22 02:09:55,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:55,041 INFO L482 AbstractCegarLoop]: Abstraction has 5113 states and 24225 transitions. [2021-05-22 02:09:55,041 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:55,041 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 24225 transitions. [2021-05-22 02:09:55,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:55,049 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:55,049 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:55,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1508 [2021-05-22 02:09:55,049 INFO L430 AbstractCegarLoop]: === Iteration 1510 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:55,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:55,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1102110389, now seen corresponding path program 1505 times [2021-05-22 02:09:55,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:55,049 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920827696] [2021-05-22 02:09:55,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:55,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:55,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:55,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920827696] [2021-05-22 02:09:55,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920827696] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:55,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:55,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:55,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867320394] [2021-05-22 02:09:55,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:55,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:55,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:55,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:55,143 INFO L87 Difference]: Start difference. First operand 5113 states and 24225 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:55,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:55,252 INFO L93 Difference]: Finished difference Result 11571 states and 51807 transitions. [2021-05-22 02:09:55,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:55,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:55,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:55,280 INFO L225 Difference]: With dead ends: 11571 [2021-05-22 02:09:55,281 INFO L226 Difference]: Without dead ends: 11096 [2021-05-22 02:09:55,281 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:55,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11096 states. [2021-05-22 02:09:55,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11096 to 5189. [2021-05-22 02:09:55,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 4.724942174248265) internal successors, (24513), 5188 states have internal predecessors, (24513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:55,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 24513 transitions. [2021-05-22 02:09:55,519 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 24513 transitions. Word has length 29 [2021-05-22 02:09:55,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:55,519 INFO L482 AbstractCegarLoop]: Abstraction has 5189 states and 24513 transitions. [2021-05-22 02:09:55,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:55,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 24513 transitions. [2021-05-22 02:09:55,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:55,527 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:55,527 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:55,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1509 [2021-05-22 02:09:55,527 INFO L430 AbstractCegarLoop]: === Iteration 1511 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:55,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:55,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1149519913, now seen corresponding path program 1506 times [2021-05-22 02:09:55,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:55,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680694894] [2021-05-22 02:09:55,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:55,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:55,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680694894] [2021-05-22 02:09:55,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680694894] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:55,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:55,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:55,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791155188] [2021-05-22 02:09:55,621 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:55,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:55,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:55,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:55,622 INFO L87 Difference]: Start difference. First operand 5189 states and 24513 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:55,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:55,733 INFO L93 Difference]: Finished difference Result 11567 states and 51719 transitions. [2021-05-22 02:09:55,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:55,734 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:55,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:55,762 INFO L225 Difference]: With dead ends: 11567 [2021-05-22 02:09:55,762 INFO L226 Difference]: Without dead ends: 10996 [2021-05-22 02:09:55,762 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:55,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10996 states. [2021-05-22 02:09:55,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10996 to 5089. [2021-05-22 02:09:55,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5089 states, 5088 states have (on average 4.7439072327044025) internal successors, (24137), 5088 states have internal predecessors, (24137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:55,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5089 states to 5089 states and 24137 transitions. [2021-05-22 02:09:55,982 INFO L78 Accepts]: Start accepts. Automaton has 5089 states and 24137 transitions. Word has length 29 [2021-05-22 02:09:55,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:55,982 INFO L482 AbstractCegarLoop]: Abstraction has 5089 states and 24137 transitions. [2021-05-22 02:09:55,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:55,983 INFO L276 IsEmpty]: Start isEmpty. Operand 5089 states and 24137 transitions. [2021-05-22 02:09:55,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:55,990 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:55,990 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:55,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1510 [2021-05-22 02:09:55,990 INFO L430 AbstractCegarLoop]: === Iteration 1512 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:55,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:55,990 INFO L82 PathProgramCache]: Analyzing trace with hash 782827851, now seen corresponding path program 1507 times [2021-05-22 02:09:55,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:55,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978144647] [2021-05-22 02:09:55,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:56,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:56,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:56,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978144647] [2021-05-22 02:09:56,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978144647] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:56,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:56,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:56,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869374157] [2021-05-22 02:09:56,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:56,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:56,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:56,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:56,086 INFO L87 Difference]: Start difference. First operand 5089 states and 24137 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:56,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:56,192 INFO L93 Difference]: Finished difference Result 12022 states and 53791 transitions. [2021-05-22 02:09:56,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:56,192 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:56,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:56,221 INFO L225 Difference]: With dead ends: 12022 [2021-05-22 02:09:56,221 INFO L226 Difference]: Without dead ends: 11480 [2021-05-22 02:09:56,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 102.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:56,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11480 states. [2021-05-22 02:09:56,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11480 to 5253. [2021-05-22 02:09:56,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5253 states, 5252 states have (on average 4.726389946686976) internal successors, (24823), 5252 states have internal predecessors, (24823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5253 states to 5253 states and 24823 transitions. [2021-05-22 02:09:56,464 INFO L78 Accepts]: Start accepts. Automaton has 5253 states and 24823 transitions. Word has length 29 [2021-05-22 02:09:56,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:56,464 INFO L482 AbstractCegarLoop]: Abstraction has 5253 states and 24823 transitions. [2021-05-22 02:09:56,464 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:56,464 INFO L276 IsEmpty]: Start isEmpty. Operand 5253 states and 24823 transitions. [2021-05-22 02:09:56,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:56,473 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:56,473 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:56,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1511 [2021-05-22 02:09:56,473 INFO L430 AbstractCegarLoop]: === Iteration 1513 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:56,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:56,473 INFO L82 PathProgramCache]: Analyzing trace with hash 41875753, now seen corresponding path program 1508 times [2021-05-22 02:09:56,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:56,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575865127] [2021-05-22 02:09:56,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:56,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:56,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:56,568 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575865127] [2021-05-22 02:09:56,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575865127] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:56,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:56,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:56,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651557206] [2021-05-22 02:09:56,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:56,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:56,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:56,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:56,569 INFO L87 Difference]: Start difference. First operand 5253 states and 24823 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:56,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:56,679 INFO L93 Difference]: Finished difference Result 11955 states and 53418 transitions. [2021-05-22 02:09:56,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:56,679 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:56,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:56,709 INFO L225 Difference]: With dead ends: 11955 [2021-05-22 02:09:56,709 INFO L226 Difference]: Without dead ends: 11370 [2021-05-22 02:09:56,709 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:56,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11370 states. [2021-05-22 02:09:56,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11370 to 5143. [2021-05-22 02:09:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.738234150136134) internal successors, (24364), 5142 states have internal predecessors, (24364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:56,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24364 transitions. [2021-05-22 02:09:56,944 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24364 transitions. Word has length 29 [2021-05-22 02:09:56,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:56,944 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24364 transitions. [2021-05-22 02:09:56,944 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:56,944 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24364 transitions. [2021-05-22 02:09:56,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:56,952 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:56,952 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:56,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1512 [2021-05-22 02:09:56,952 INFO L430 AbstractCegarLoop]: === Iteration 1514 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:56,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:56,952 INFO L82 PathProgramCache]: Analyzing trace with hash -63969111, now seen corresponding path program 1509 times [2021-05-22 02:09:56,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:56,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295677919] [2021-05-22 02:09:56,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:57,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:57,057 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:57,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295677919] [2021-05-22 02:09:57,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295677919] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:57,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:57,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:57,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857654516] [2021-05-22 02:09:57,058 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:57,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:57,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:57,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:57,058 INFO L87 Difference]: Start difference. First operand 5143 states and 24364 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:57,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:57,148 INFO L93 Difference]: Finished difference Result 12016 states and 53718 transitions. [2021-05-22 02:09:57,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:57,149 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:57,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:57,177 INFO L225 Difference]: With dead ends: 12016 [2021-05-22 02:09:57,178 INFO L226 Difference]: Without dead ends: 11474 [2021-05-22 02:09:57,178 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 112.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:57,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11474 states. [2021-05-22 02:09:57,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11474 to 5251. [2021-05-22 02:09:57,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5251 states, 5250 states have (on average 4.716952380952381) internal successors, (24764), 5250 states have internal predecessors, (24764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:57,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5251 states to 5251 states and 24764 transitions. [2021-05-22 02:09:57,425 INFO L78 Accepts]: Start accepts. Automaton has 5251 states and 24764 transitions. Word has length 29 [2021-05-22 02:09:57,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:57,425 INFO L482 AbstractCegarLoop]: Abstraction has 5251 states and 24764 transitions. [2021-05-22 02:09:57,425 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:57,426 INFO L276 IsEmpty]: Start isEmpty. Operand 5251 states and 24764 transitions. [2021-05-22 02:09:57,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:57,434 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:57,434 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:57,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1513 [2021-05-22 02:09:57,434 INFO L430 AbstractCegarLoop]: === Iteration 1515 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:57,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:57,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1864085079, now seen corresponding path program 1510 times [2021-05-22 02:09:57,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:57,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972555373] [2021-05-22 02:09:57,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:57,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:57,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:57,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972555373] [2021-05-22 02:09:57,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972555373] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:57,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:57,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:57,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375164975] [2021-05-22 02:09:57,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:57,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:57,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:57,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:57,541 INFO L87 Difference]: Start difference. First operand 5251 states and 24764 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:57,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:57,650 INFO L93 Difference]: Finished difference Result 11945 states and 53335 transitions. [2021-05-22 02:09:57,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:57,650 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:57,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:57,680 INFO L225 Difference]: With dead ends: 11945 [2021-05-22 02:09:57,681 INFO L226 Difference]: Without dead ends: 11366 [2021-05-22 02:09:57,681 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:57,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11366 states. [2021-05-22 02:09:57,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11366 to 5143. [2021-05-22 02:09:57,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 5142 states have (on average 4.7277323998444185) internal successors, (24310), 5142 states have internal predecessors, (24310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:57,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 24310 transitions. [2021-05-22 02:09:57,909 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 24310 transitions. Word has length 29 [2021-05-22 02:09:57,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:57,909 INFO L482 AbstractCegarLoop]: Abstraction has 5143 states and 24310 transitions. [2021-05-22 02:09:57,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:57,909 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 24310 transitions. [2021-05-22 02:09:57,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:57,917 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:57,917 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:57,917 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1514 [2021-05-22 02:09:57,917 INFO L430 AbstractCegarLoop]: === Iteration 1516 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:57,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:57,917 INFO L82 PathProgramCache]: Analyzing trace with hash -317801977, now seen corresponding path program 1511 times [2021-05-22 02:09:57,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:57,917 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221623287] [2021-05-22 02:09:57,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:58,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:58,011 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:58,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221623287] [2021-05-22 02:09:58,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221623287] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:58,012 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:58,012 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:58,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456149432] [2021-05-22 02:09:58,012 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:58,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:58,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:58,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:58,012 INFO L87 Difference]: Start difference. First operand 5143 states and 24310 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:58,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:58,120 INFO L93 Difference]: Finished difference Result 11850 states and 52994 transitions. [2021-05-22 02:09:58,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:58,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:58,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:58,148 INFO L225 Difference]: With dead ends: 11850 [2021-05-22 02:09:58,148 INFO L226 Difference]: Without dead ends: 11375 [2021-05-22 02:09:58,148 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:58,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11375 states. [2021-05-22 02:09:58,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11375 to 5219. [2021-05-22 02:09:58,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5219 states, 5218 states have (on average 4.714066692219241) internal successors, (24598), 5218 states have internal predecessors, (24598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:58,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5219 states to 5219 states and 24598 transitions. [2021-05-22 02:09:58,382 INFO L78 Accepts]: Start accepts. Automaton has 5219 states and 24598 transitions. Word has length 29 [2021-05-22 02:09:58,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:58,382 INFO L482 AbstractCegarLoop]: Abstraction has 5219 states and 24598 transitions. [2021-05-22 02:09:58,382 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:58,382 INFO L276 IsEmpty]: Start isEmpty. Operand 5219 states and 24598 transitions. [2021-05-22 02:09:58,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:58,390 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:58,390 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:58,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1515 [2021-05-22 02:09:58,390 INFO L430 AbstractCegarLoop]: === Iteration 1517 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:58,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:58,390 INFO L82 PathProgramCache]: Analyzing trace with hash 763260649, now seen corresponding path program 1512 times [2021-05-22 02:09:58,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:58,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167210809] [2021-05-22 02:09:58,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:58,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:58,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167210809] [2021-05-22 02:09:58,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167210809] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:58,484 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:58,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:58,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356279619] [2021-05-22 02:09:58,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:58,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:58,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:58,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:58,484 INFO L87 Difference]: Start difference. First operand 5219 states and 24598 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:58,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:58,599 INFO L93 Difference]: Finished difference Result 11846 states and 52906 transitions. [2021-05-22 02:09:58,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:58,599 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:58,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:58,626 INFO L225 Difference]: With dead ends: 11846 [2021-05-22 02:09:58,627 INFO L226 Difference]: Without dead ends: 11225 [2021-05-22 02:09:58,627 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:58,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11225 states. [2021-05-22 02:09:58,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11225 to 5069. [2021-05-22 02:09:58,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5069 states, 5068 states have (on average 4.748816101026046) internal successors, (24067), 5068 states have internal predecessors, (24067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:58,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5069 states to 5069 states and 24067 transitions. [2021-05-22 02:09:58,859 INFO L78 Accepts]: Start accepts. Automaton has 5069 states and 24067 transitions. Word has length 29 [2021-05-22 02:09:58,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:58,859 INFO L482 AbstractCegarLoop]: Abstraction has 5069 states and 24067 transitions. [2021-05-22 02:09:58,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:58,859 INFO L276 IsEmpty]: Start isEmpty. Operand 5069 states and 24067 transitions. [2021-05-22 02:09:58,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:58,867 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:58,867 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:58,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1516 [2021-05-22 02:09:58,867 INFO L430 AbstractCegarLoop]: === Iteration 1518 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:58,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:58,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1049420295, now seen corresponding path program 1513 times [2021-05-22 02:09:58,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:58,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239180089] [2021-05-22 02:09:58,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:58,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:58,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:58,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239180089] [2021-05-22 02:09:58,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239180089] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:58,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:58,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:58,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325180893] [2021-05-22 02:09:58,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:58,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:58,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:58,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:58,978 INFO L87 Difference]: Start difference. First operand 5069 states and 24067 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:59,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:59,096 INFO L93 Difference]: Finished difference Result 11220 states and 50284 transitions. [2021-05-22 02:09:59,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:59,096 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:59,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:59,124 INFO L225 Difference]: With dead ends: 11220 [2021-05-22 02:09:59,124 INFO L226 Difference]: Without dead ends: 10805 [2021-05-22 02:09:59,124 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:59,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10805 states. [2021-05-22 02:09:59,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10805 to 5153. [2021-05-22 02:09:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.742818322981367) internal successors, (24435), 5152 states have internal predecessors, (24435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:59,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24435 transitions. [2021-05-22 02:09:59,355 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24435 transitions. Word has length 29 [2021-05-22 02:09:59,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:59,356 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24435 transitions. [2021-05-22 02:09:59,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:59,356 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24435 transitions. [2021-05-22 02:09:59,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:59,364 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:59,364 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:59,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1517 [2021-05-22 02:09:59,364 INFO L430 AbstractCegarLoop]: === Iteration 1519 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:59,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:59,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1766083241, now seen corresponding path program 1514 times [2021-05-22 02:09:59,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:59,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006357710] [2021-05-22 02:09:59,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:59,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:59,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006357710] [2021-05-22 02:09:59,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006357710] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:59,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:59,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:59,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839164027] [2021-05-22 02:09:59,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:59,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:59,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:59,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:59,478 INFO L87 Difference]: Start difference. First operand 5153 states and 24435 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:59,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:09:59,592 INFO L93 Difference]: Finished difference Result 11282 states and 50505 transitions. [2021-05-22 02:09:59,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:09:59,592 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:09:59,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:09:59,618 INFO L225 Difference]: With dead ends: 11282 [2021-05-22 02:09:59,618 INFO L226 Difference]: Without dead ends: 10757 [2021-05-22 02:09:59,618 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:09:59,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10757 states. [2021-05-22 02:09:59,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10757 to 5105. [2021-05-22 02:09:59,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.748236677115988) internal successors, (24235), 5104 states have internal predecessors, (24235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:59,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24235 transitions. [2021-05-22 02:09:59,834 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24235 transitions. Word has length 29 [2021-05-22 02:09:59,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:09:59,834 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24235 transitions. [2021-05-22 02:09:59,834 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:09:59,834 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24235 transitions. [2021-05-22 02:09:59,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:09:59,841 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:09:59,841 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:09:59,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1518 [2021-05-22 02:09:59,842 INFO L430 AbstractCegarLoop]: === Iteration 1520 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:09:59,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:09:59,842 INFO L82 PathProgramCache]: Analyzing trace with hash -124539415, now seen corresponding path program 1515 times [2021-05-22 02:09:59,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:09:59,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989338182] [2021-05-22 02:09:59,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:09:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:09:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:09:59,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:09:59,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989338182] [2021-05-22 02:09:59,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989338182] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:09:59,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:09:59,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:09:59,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835297465] [2021-05-22 02:09:59,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:09:59,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:09:59,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:09:59,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:09:59,954 INFO L87 Difference]: Start difference. First operand 5105 states and 24235 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:00,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:00,063 INFO L93 Difference]: Finished difference Result 11218 states and 50255 transitions. [2021-05-22 02:10:00,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:00,063 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:00,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:00,090 INFO L225 Difference]: With dead ends: 11218 [2021-05-22 02:10:00,091 INFO L226 Difference]: Without dead ends: 10803 [2021-05-22 02:10:00,091 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:00,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10803 states. [2021-05-22 02:10:00,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10803 to 5153. [2021-05-22 02:10:00,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.738159937888199) internal successors, (24411), 5152 states have internal predecessors, (24411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:00,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24411 transitions. [2021-05-22 02:10:00,315 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24411 transitions. Word has length 29 [2021-05-22 02:10:00,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:00,315 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24411 transitions. [2021-05-22 02:10:00,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:00,315 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24411 transitions. [2021-05-22 02:10:00,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:00,323 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:00,323 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:00,323 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1519 [2021-05-22 02:10:00,323 INFO L430 AbstractCegarLoop]: === Iteration 1521 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:00,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:00,323 INFO L82 PathProgramCache]: Analyzing trace with hash 905025961, now seen corresponding path program 1516 times [2021-05-22 02:10:00,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:00,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191041690] [2021-05-22 02:10:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:00,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:00,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:00,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191041690] [2021-05-22 02:10:00,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191041690] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:00,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:00,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:00,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205982219] [2021-05-22 02:10:00,439 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:00,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:00,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:00,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:00,439 INFO L87 Difference]: Start difference. First operand 5153 states and 24411 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:00,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:00,554 INFO L93 Difference]: Finished difference Result 11278 states and 50471 transitions. [2021-05-22 02:10:00,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:00,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:00,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:00,580 INFO L225 Difference]: With dead ends: 11278 [2021-05-22 02:10:00,580 INFO L226 Difference]: Without dead ends: 10755 [2021-05-22 02:10:00,580 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:00,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10755 states. [2021-05-22 02:10:00,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10755 to 5105. [2021-05-22 02:10:00,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.743534482758621) internal successors, (24211), 5104 states have internal predecessors, (24211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:00,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24211 transitions. [2021-05-22 02:10:00,803 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24211 transitions. Word has length 29 [2021-05-22 02:10:00,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:00,803 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24211 transitions. [2021-05-22 02:10:00,803 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:00,803 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24211 transitions. [2021-05-22 02:10:00,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:00,811 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:00,811 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:00,811 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1520 [2021-05-22 02:10:00,811 INFO L430 AbstractCegarLoop]: === Iteration 1522 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:00,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:00,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1078952395, now seen corresponding path program 1517 times [2021-05-22 02:10:00,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:00,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406427074] [2021-05-22 02:10:00,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:00,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:00,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:00,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406427074] [2021-05-22 02:10:00,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406427074] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:00,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:00,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:00,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173242572] [2021-05-22 02:10:00,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:00,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:00,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:00,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:00,914 INFO L87 Difference]: Start difference. First operand 5105 states and 24211 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:01,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:01,021 INFO L93 Difference]: Finished difference Result 11372 states and 50916 transitions. [2021-05-22 02:10:01,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:01,021 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:01,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:01,048 INFO L225 Difference]: With dead ends: 11372 [2021-05-22 02:10:01,048 INFO L226 Difference]: Without dead ends: 10895 [2021-05-22 02:10:01,048 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:01,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10895 states. [2021-05-22 02:10:01,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10895 to 5183. [2021-05-22 02:10:01,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5183 states, 5182 states have (on average 4.728676186800463) internal successors, (24504), 5182 states have internal predecessors, (24504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:01,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5183 states to 5183 states and 24504 transitions. [2021-05-22 02:10:01,277 INFO L78 Accepts]: Start accepts. Automaton has 5183 states and 24504 transitions. Word has length 29 [2021-05-22 02:10:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:01,278 INFO L482 AbstractCegarLoop]: Abstraction has 5183 states and 24504 transitions. [2021-05-22 02:10:01,278 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:01,278 INFO L276 IsEmpty]: Start isEmpty. Operand 5183 states and 24504 transitions. [2021-05-22 02:10:01,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:01,286 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:01,286 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:01,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1521 [2021-05-22 02:10:01,286 INFO L430 AbstractCegarLoop]: === Iteration 1523 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:01,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:01,286 INFO L82 PathProgramCache]: Analyzing trace with hash -313192151, now seen corresponding path program 1518 times [2021-05-22 02:10:01,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:01,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443674258] [2021-05-22 02:10:01,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:01,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:01,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:01,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443674258] [2021-05-22 02:10:01,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443674258] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:01,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:01,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:01,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892289222] [2021-05-22 02:10:01,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:01,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:01,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:01,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:01,392 INFO L87 Difference]: Start difference. First operand 5183 states and 24504 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:01,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:01,512 INFO L93 Difference]: Finished difference Result 11370 states and 50833 transitions. [2021-05-22 02:10:01,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:01,512 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:01,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:01,539 INFO L225 Difference]: With dead ends: 11370 [2021-05-22 02:10:01,539 INFO L226 Difference]: Without dead ends: 10793 [2021-05-22 02:10:01,539 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:01,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10793 states. [2021-05-22 02:10:01,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10793 to 5081. [2021-05-22 02:10:01,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5081 states, 5080 states have (on average 4.748622047244094) internal successors, (24123), 5080 states have internal predecessors, (24123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:01,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5081 states to 5081 states and 24123 transitions. [2021-05-22 02:10:01,775 INFO L78 Accepts]: Start accepts. Automaton has 5081 states and 24123 transitions. Word has length 29 [2021-05-22 02:10:01,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:01,775 INFO L482 AbstractCegarLoop]: Abstraction has 5081 states and 24123 transitions. [2021-05-22 02:10:01,775 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:01,775 INFO L276 IsEmpty]: Start isEmpty. Operand 5081 states and 24123 transitions. [2021-05-22 02:10:01,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:01,783 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:01,783 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:01,783 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1522 [2021-05-22 02:10:01,783 INFO L430 AbstractCegarLoop]: === Iteration 1524 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:01,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:01,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1535945239, now seen corresponding path program 1519 times [2021-05-22 02:10:01,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:01,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550084740] [2021-05-22 02:10:01,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:01,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:01,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:01,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550084740] [2021-05-22 02:10:01,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550084740] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:01,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:01,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:01,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846424391] [2021-05-22 02:10:01,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:01,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:01,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:01,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:01,890 INFO L87 Difference]: Start difference. First operand 5081 states and 24123 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:02,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:02,011 INFO L93 Difference]: Finished difference Result 11214 states and 50253 transitions. [2021-05-22 02:10:02,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:02,011 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:02,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:02,037 INFO L225 Difference]: With dead ends: 11214 [2021-05-22 02:10:02,038 INFO L226 Difference]: Without dead ends: 10799 [2021-05-22 02:10:02,038 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:02,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10799 states. [2021-05-22 02:10:02,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10799 to 5153. [2021-05-22 02:10:02,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.740489130434782) internal successors, (24423), 5152 states have internal predecessors, (24423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:02,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24423 transitions. [2021-05-22 02:10:02,273 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24423 transitions. Word has length 29 [2021-05-22 02:10:02,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:02,273 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24423 transitions. [2021-05-22 02:10:02,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:02,273 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24423 transitions. [2021-05-22 02:10:02,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:02,281 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:02,281 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:02,281 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1523 [2021-05-22 02:10:02,281 INFO L430 AbstractCegarLoop]: === Iteration 1525 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:02,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:02,282 INFO L82 PathProgramCache]: Analyzing trace with hash -819282293, now seen corresponding path program 1520 times [2021-05-22 02:10:02,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:02,282 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808415677] [2021-05-22 02:10:02,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:02,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:02,389 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:02,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808415677] [2021-05-22 02:10:02,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808415677] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:02,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:02,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:02,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460802443] [2021-05-22 02:10:02,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:02,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:02,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:02,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:02,390 INFO L87 Difference]: Start difference. First operand 5153 states and 24423 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:02,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:02,495 INFO L93 Difference]: Finished difference Result 11276 states and 50474 transitions. [2021-05-22 02:10:02,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:02,495 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:02,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:02,521 INFO L225 Difference]: With dead ends: 11276 [2021-05-22 02:10:02,521 INFO L226 Difference]: Without dead ends: 10751 [2021-05-22 02:10:02,522 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:02,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10751 states. [2021-05-22 02:10:02,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10751 to 5105. [2021-05-22 02:10:02,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.745885579937304) internal successors, (24223), 5104 states have internal predecessors, (24223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:02,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24223 transitions. [2021-05-22 02:10:02,753 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24223 transitions. Word has length 29 [2021-05-22 02:10:02,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:02,753 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24223 transitions. [2021-05-22 02:10:02,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:02,753 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24223 transitions. [2021-05-22 02:10:02,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:02,761 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:02,761 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:02,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1524 [2021-05-22 02:10:02,761 INFO L430 AbstractCegarLoop]: === Iteration 1526 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:02,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:02,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1136032407, now seen corresponding path program 1521 times [2021-05-22 02:10:02,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:02,762 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088457535] [2021-05-22 02:10:02,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:02,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:02,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:02,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088457535] [2021-05-22 02:10:02,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088457535] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:02,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:02,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:02,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723102254] [2021-05-22 02:10:02,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:02,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:02,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:02,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:02,855 INFO L87 Difference]: Start difference. First operand 5105 states and 24223 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:02,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:02,958 INFO L93 Difference]: Finished difference Result 11208 states and 50212 transitions. [2021-05-22 02:10:02,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:02,958 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:02,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:02,985 INFO L225 Difference]: With dead ends: 11208 [2021-05-22 02:10:02,985 INFO L226 Difference]: Without dead ends: 10793 [2021-05-22 02:10:02,985 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:03,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10793 states. [2021-05-22 02:10:03,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10793 to 5153. [2021-05-22 02:10:03,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.735830745341615) internal successors, (24399), 5152 states have internal predecessors, (24399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:03,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24399 transitions. [2021-05-22 02:10:03,257 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24399 transitions. Word has length 29 [2021-05-22 02:10:03,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:03,257 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24399 transitions. [2021-05-22 02:10:03,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:03,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24399 transitions. [2021-05-22 02:10:03,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:03,266 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:03,266 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:03,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1525 [2021-05-22 02:10:03,266 INFO L430 AbstractCegarLoop]: === Iteration 1527 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:03,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:03,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1991421655, now seen corresponding path program 1522 times [2021-05-22 02:10:03,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:03,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798992029] [2021-05-22 02:10:03,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:03,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:03,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:03,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798992029] [2021-05-22 02:10:03,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798992029] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:03,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:03,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:03,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206060090] [2021-05-22 02:10:03,359 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:03,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:03,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:03,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:03,359 INFO L87 Difference]: Start difference. First operand 5153 states and 24399 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:03,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:03,463 INFO L93 Difference]: Finished difference Result 11264 states and 50416 transitions. [2021-05-22 02:10:03,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:03,464 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:03,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:03,490 INFO L225 Difference]: With dead ends: 11264 [2021-05-22 02:10:03,490 INFO L226 Difference]: Without dead ends: 10745 [2021-05-22 02:10:03,490 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:03,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10745 states. [2021-05-22 02:10:03,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 5105. [2021-05-22 02:10:03,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.741183385579937) internal successors, (24199), 5104 states have internal predecessors, (24199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:03,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24199 transitions. [2021-05-22 02:10:03,722 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24199 transitions. Word has length 29 [2021-05-22 02:10:03,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:03,722 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24199 transitions. [2021-05-22 02:10:03,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:03,722 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24199 transitions. [2021-05-22 02:10:03,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:03,731 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:03,731 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:03,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1526 [2021-05-22 02:10:03,731 INFO L430 AbstractCegarLoop]: === Iteration 1528 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:03,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:03,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1805273419, now seen corresponding path program 1523 times [2021-05-22 02:10:03,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:03,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375270327] [2021-05-22 02:10:03,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:03,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:03,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:03,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375270327] [2021-05-22 02:10:03,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375270327] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:03,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:03,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:03,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653418603] [2021-05-22 02:10:03,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:03,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:03,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:03,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:03,822 INFO L87 Difference]: Start difference. First operand 5105 states and 24199 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:03,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:03,926 INFO L93 Difference]: Finished difference Result 11360 states and 50866 transitions. [2021-05-22 02:10:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:03,926 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:03,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:03,954 INFO L225 Difference]: With dead ends: 11360 [2021-05-22 02:10:03,954 INFO L226 Difference]: Without dead ends: 10883 [2021-05-22 02:10:03,954 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:04,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10883 states. [2021-05-22 02:10:04,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10883 to 5181. [2021-05-22 02:10:04,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5181 states, 5180 states have (on average 4.727220077220077) internal successors, (24487), 5180 states have internal predecessors, (24487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:04,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 24487 transitions. [2021-05-22 02:10:04,193 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 24487 transitions. Word has length 29 [2021-05-22 02:10:04,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:04,194 INFO L482 AbstractCegarLoop]: Abstraction has 5181 states and 24487 transitions. [2021-05-22 02:10:04,194 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:04,194 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 24487 transitions. [2021-05-22 02:10:04,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:04,202 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:04,202 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:04,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1527 [2021-05-22 02:10:04,202 INFO L430 AbstractCegarLoop]: === Iteration 1529 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:04,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:04,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1064321321, now seen corresponding path program 1524 times [2021-05-22 02:10:04,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:04,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815639325] [2021-05-22 02:10:04,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:04,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:04,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815639325] [2021-05-22 02:10:04,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815639325] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:04,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:04,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:04,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51745894] [2021-05-22 02:10:04,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:04,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:04,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:04,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:04,295 INFO L87 Difference]: Start difference. First operand 5181 states and 24487 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:04,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:04,400 INFO L93 Difference]: Finished difference Result 11354 states and 50773 transitions. [2021-05-22 02:10:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:04,401 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:04,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:04,428 INFO L225 Difference]: With dead ends: 11354 [2021-05-22 02:10:04,428 INFO L226 Difference]: Without dead ends: 10783 [2021-05-22 02:10:04,428 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 115.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:04,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10783 states. [2021-05-22 02:10:04,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10783 to 5081. [2021-05-22 02:10:04,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5081 states, 5080 states have (on average 4.746259842519685) internal successors, (24111), 5080 states have internal predecessors, (24111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:04,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5081 states to 5081 states and 24111 transitions. [2021-05-22 02:10:04,662 INFO L78 Accepts]: Start accepts. Automaton has 5081 states and 24111 transitions. Word has length 29 [2021-05-22 02:10:04,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:04,662 INFO L482 AbstractCegarLoop]: Abstraction has 5081 states and 24111 transitions. [2021-05-22 02:10:04,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:04,662 INFO L276 IsEmpty]: Start isEmpty. Operand 5081 states and 24111 transitions. [2021-05-22 02:10:04,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:04,671 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:04,671 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:04,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1528 [2021-05-22 02:10:04,671 INFO L430 AbstractCegarLoop]: === Iteration 1530 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:04,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:04,671 INFO L82 PathProgramCache]: Analyzing trace with hash 968093899, now seen corresponding path program 1525 times [2021-05-22 02:10:04,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:04,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352959310] [2021-05-22 02:10:04,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:04,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:04,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352959310] [2021-05-22 02:10:04,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352959310] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:04,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:04,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:04,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956473702] [2021-05-22 02:10:04,776 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:04,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:04,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:04,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:04,776 INFO L87 Difference]: Start difference. First operand 5081 states and 24111 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:04,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:04,891 INFO L93 Difference]: Finished difference Result 11210 states and 50231 transitions. [2021-05-22 02:10:04,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:04,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:04,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:04,918 INFO L225 Difference]: With dead ends: 11210 [2021-05-22 02:10:04,918 INFO L226 Difference]: Without dead ends: 10795 [2021-05-22 02:10:04,918 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:05,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10795 states. [2021-05-22 02:10:05,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10795 to 5153. [2021-05-22 02:10:05,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.738159937888199) internal successors, (24411), 5152 states have internal predecessors, (24411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:05,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24411 transitions. [2021-05-22 02:10:05,154 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24411 transitions. Word has length 29 [2021-05-22 02:10:05,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:05,154 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24411 transitions. [2021-05-22 02:10:05,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:05,154 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24411 transitions. [2021-05-22 02:10:05,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:05,163 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:05,163 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:05,163 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1529 [2021-05-22 02:10:05,163 INFO L430 AbstractCegarLoop]: === Iteration 1531 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:05,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:05,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1997659275, now seen corresponding path program 1526 times [2021-05-22 02:10:05,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:05,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481051234] [2021-05-22 02:10:05,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:05,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:05,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:05,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481051234] [2021-05-22 02:10:05,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481051234] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:05,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:05,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:05,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227415884] [2021-05-22 02:10:05,271 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:05,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:05,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:05,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:05,271 INFO L87 Difference]: Start difference. First operand 5153 states and 24411 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:05,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:05,378 INFO L93 Difference]: Finished difference Result 11270 states and 50447 transitions. [2021-05-22 02:10:05,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:05,378 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:05,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:05,405 INFO L225 Difference]: With dead ends: 11270 [2021-05-22 02:10:05,405 INFO L226 Difference]: Without dead ends: 10747 [2021-05-22 02:10:05,405 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:05,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10747 states. [2021-05-22 02:10:05,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10747 to 5105. [2021-05-22 02:10:05,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.743534482758621) internal successors, (24211), 5104 states have internal predecessors, (24211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:05,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24211 transitions. [2021-05-22 02:10:05,646 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24211 transitions. Word has length 29 [2021-05-22 02:10:05,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:05,646 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24211 transitions. [2021-05-22 02:10:05,647 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:05,647 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24211 transitions. [2021-05-22 02:10:05,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:05,655 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:05,655 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:05,655 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1530 [2021-05-22 02:10:05,655 INFO L430 AbstractCegarLoop]: === Iteration 1532 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:05,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:05,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1054967639, now seen corresponding path program 1527 times [2021-05-22 02:10:05,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:05,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978385654] [2021-05-22 02:10:05,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:05,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:05,749 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:05,749 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978385654] [2021-05-22 02:10:05,749 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978385654] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:05,749 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:05,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:05,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847493549] [2021-05-22 02:10:05,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:05,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:05,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:05,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:05,750 INFO L87 Difference]: Start difference. First operand 5105 states and 24211 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:05,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:05,856 INFO L93 Difference]: Finished difference Result 11206 states and 50195 transitions. [2021-05-22 02:10:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:05,856 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:05,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:05,884 INFO L225 Difference]: With dead ends: 11206 [2021-05-22 02:10:05,884 INFO L226 Difference]: Without dead ends: 10791 [2021-05-22 02:10:05,885 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:06,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10791 states. [2021-05-22 02:10:06,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10791 to 5153. [2021-05-22 02:10:06,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 5152 states have (on average 4.7335015527950315) internal successors, (24387), 5152 states have internal predecessors, (24387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:06,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 24387 transitions. [2021-05-22 02:10:06,128 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 24387 transitions. Word has length 29 [2021-05-22 02:10:06,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:06,129 INFO L482 AbstractCegarLoop]: Abstraction has 5153 states and 24387 transitions. [2021-05-22 02:10:06,129 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:06,129 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 24387 transitions. [2021-05-22 02:10:06,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:06,137 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:06,137 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:06,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1531 [2021-05-22 02:10:06,138 INFO L430 AbstractCegarLoop]: === Iteration 1533 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:06,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:06,138 INFO L82 PathProgramCache]: Analyzing trace with hash -590304117, now seen corresponding path program 1528 times [2021-05-22 02:10:06,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:06,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886706664] [2021-05-22 02:10:06,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:06,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:06,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886706664] [2021-05-22 02:10:06,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886706664] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:06,232 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:06,232 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:06,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143189702] [2021-05-22 02:10:06,232 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:06,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:06,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:06,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:06,233 INFO L87 Difference]: Start difference. First operand 5153 states and 24387 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:06,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:06,344 INFO L93 Difference]: Finished difference Result 11262 states and 50399 transitions. [2021-05-22 02:10:06,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:06,345 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:06,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:06,373 INFO L225 Difference]: With dead ends: 11262 [2021-05-22 02:10:06,374 INFO L226 Difference]: Without dead ends: 10743 [2021-05-22 02:10:06,374 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:06,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10743 states. [2021-05-22 02:10:06,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10743 to 5105. [2021-05-22 02:10:06,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5105 states, 5104 states have (on average 4.7388322884012535) internal successors, (24187), 5104 states have internal predecessors, (24187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:06,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5105 states to 5105 states and 24187 transitions. [2021-05-22 02:10:06,608 INFO L78 Accepts]: Start accepts. Automaton has 5105 states and 24187 transitions. Word has length 29 [2021-05-22 02:10:06,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:06,608 INFO L482 AbstractCegarLoop]: Abstraction has 5105 states and 24187 transitions. [2021-05-22 02:10:06,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:06,608 INFO L276 IsEmpty]: Start isEmpty. Operand 5105 states and 24187 transitions. [2021-05-22 02:10:06,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:06,617 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:06,617 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:06,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1532 [2021-05-22 02:10:06,617 INFO L430 AbstractCegarLoop]: === Iteration 1534 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:06,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:06,617 INFO L82 PathProgramCache]: Analyzing trace with hash 307345483, now seen corresponding path program 1529 times [2021-05-22 02:10:06,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:06,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990162456] [2021-05-22 02:10:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:06,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:06,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:06,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:06,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990162456] [2021-05-22 02:10:06,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990162456] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:06,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:06,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:06,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611653406] [2021-05-22 02:10:06,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:06,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:06,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:06,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:06,712 INFO L87 Difference]: Start difference. First operand 5105 states and 24187 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:06,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:06,825 INFO L93 Difference]: Finished difference Result 11354 states and 50839 transitions. [2021-05-22 02:10:06,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:06,825 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:06,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:06,853 INFO L225 Difference]: With dead ends: 11354 [2021-05-22 02:10:06,854 INFO L226 Difference]: Without dead ends: 10879 [2021-05-22 02:10:06,854 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:06,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10879 states. [2021-05-22 02:10:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10879 to 5181. [2021-05-22 02:10:07,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5181 states, 5180 states have (on average 4.724903474903475) internal successors, (24475), 5180 states have internal predecessors, (24475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:07,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 24475 transitions. [2021-05-22 02:10:07,092 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 24475 transitions. Word has length 29 [2021-05-22 02:10:07,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:07,092 INFO L482 AbstractCegarLoop]: Abstraction has 5181 states and 24475 transitions. [2021-05-22 02:10:07,092 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:07,092 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 24475 transitions. [2021-05-22 02:10:07,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:07,101 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:07,101 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:07,101 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1533 [2021-05-22 02:10:07,101 INFO L430 AbstractCegarLoop]: === Iteration 1535 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:07,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:07,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1735991511, now seen corresponding path program 1530 times [2021-05-22 02:10:07,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:07,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84244899] [2021-05-22 02:10:07,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:07,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:07,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:07,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84244899] [2021-05-22 02:10:07,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84244899] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:07,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:07,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:07,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339166150] [2021-05-22 02:10:07,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:07,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:07,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:07,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:07,196 INFO L87 Difference]: Start difference. First operand 5181 states and 24475 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:07,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:07,309 INFO L93 Difference]: Finished difference Result 11350 states and 50751 transitions. [2021-05-22 02:10:07,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:07,309 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:07,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:07,336 INFO L225 Difference]: With dead ends: 11350 [2021-05-22 02:10:07,337 INFO L226 Difference]: Without dead ends: 10779 [2021-05-22 02:10:07,337 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:07,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10779 states. [2021-05-22 02:10:07,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10779 to 5081. [2021-05-22 02:10:07,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5081 states, 5080 states have (on average 4.743897637795276) internal successors, (24099), 5080 states have internal predecessors, (24099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:07,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5081 states to 5081 states and 24099 transitions. [2021-05-22 02:10:07,578 INFO L78 Accepts]: Start accepts. Automaton has 5081 states and 24099 transitions. Word has length 29 [2021-05-22 02:10:07,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:07,578 INFO L482 AbstractCegarLoop]: Abstraction has 5081 states and 24099 transitions. [2021-05-22 02:10:07,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:07,578 INFO L276 IsEmpty]: Start isEmpty. Operand 5081 states and 24099 transitions. [2021-05-22 02:10:07,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:07,588 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:07,588 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:07,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1534 [2021-05-22 02:10:07,588 INFO L430 AbstractCegarLoop]: === Iteration 1536 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:07,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:07,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1159679981, now seen corresponding path program 1531 times [2021-05-22 02:10:07,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:07,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951942615] [2021-05-22 02:10:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:07,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:07,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:07,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951942615] [2021-05-22 02:10:07,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951942615] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:07,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:07,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:07,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477248958] [2021-05-22 02:10:07,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:07,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:07,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:07,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:07,685 INFO L87 Difference]: Start difference. First operand 5081 states and 24099 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:07,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:07,806 INFO L93 Difference]: Finished difference Result 11498 states and 51537 transitions. [2021-05-22 02:10:07,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:07,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:07,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:07,838 INFO L225 Difference]: With dead ends: 11498 [2021-05-22 02:10:07,839 INFO L226 Difference]: Without dead ends: 11021 [2021-05-22 02:10:07,839 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:07,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11021 states. [2021-05-22 02:10:08,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11021 to 5197. [2021-05-22 02:10:08,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5196 states have (on average 4.73306389530408) internal successors, (24593), 5196 states have internal predecessors, (24593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:08,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 24593 transitions. [2021-05-22 02:10:08,088 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 24593 transitions. Word has length 29 [2021-05-22 02:10:08,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:08,088 INFO L482 AbstractCegarLoop]: Abstraction has 5197 states and 24593 transitions. [2021-05-22 02:10:08,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:08,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 24593 transitions. [2021-05-22 02:10:08,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:08,097 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:08,097 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:08,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1535 [2021-05-22 02:10:08,097 INFO L430 AbstractCegarLoop]: === Iteration 1537 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:08,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:08,097 INFO L82 PathProgramCache]: Analyzing trace with hash -232464565, now seen corresponding path program 1532 times [2021-05-22 02:10:08,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:08,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655664126] [2021-05-22 02:10:08,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:08,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:08,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:08,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655664126] [2021-05-22 02:10:08,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655664126] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:08,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:08,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:08,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759775088] [2021-05-22 02:10:08,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:08,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:08,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:08,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:08,209 INFO L87 Difference]: Start difference. First operand 5197 states and 24593 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:08,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:08,314 INFO L93 Difference]: Finished difference Result 11496 states and 51454 transitions. [2021-05-22 02:10:08,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:08,315 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:08,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:08,345 INFO L225 Difference]: With dead ends: 11496 [2021-05-22 02:10:08,345 INFO L226 Difference]: Without dead ends: 10943 [2021-05-22 02:10:08,345 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:08,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10943 states. [2021-05-22 02:10:08,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10943 to 5119. [2021-05-22 02:10:08,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 5118 states have (on average 4.740523642047675) internal successors, (24262), 5118 states have internal predecessors, (24262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:08,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 24262 transitions. [2021-05-22 02:10:08,592 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 24262 transitions. Word has length 29 [2021-05-22 02:10:08,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:08,592 INFO L482 AbstractCegarLoop]: Abstraction has 5119 states and 24262 transitions. [2021-05-22 02:10:08,592 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:08,592 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 24262 transitions. [2021-05-22 02:10:08,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:08,601 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:08,601 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:08,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1536 [2021-05-22 02:10:08,601 INFO L430 AbstractCegarLoop]: === Iteration 1538 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:08,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:08,602 INFO L82 PathProgramCache]: Analyzing trace with hash 312883019, now seen corresponding path program 1533 times [2021-05-22 02:10:08,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:08,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487704066] [2021-05-22 02:10:08,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:08,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:08,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:08,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487704066] [2021-05-22 02:10:08,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487704066] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:08,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:08,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:08,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363930320] [2021-05-22 02:10:08,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:08,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:08,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:08,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:08,698 INFO L87 Difference]: Start difference. First operand 5119 states and 24262 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:08,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:08,805 INFO L93 Difference]: Finished difference Result 11492 states and 51480 transitions. [2021-05-22 02:10:08,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:08,805 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:08,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:08,834 INFO L225 Difference]: With dead ends: 11492 [2021-05-22 02:10:08,834 INFO L226 Difference]: Without dead ends: 11015 [2021-05-22 02:10:08,834 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:08,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11015 states. [2021-05-22 02:10:09,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11015 to 5195. [2021-05-22 02:10:09,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.7266076241817485) internal successors, (24550), 5194 states have internal predecessors, (24550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:09,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24550 transitions. [2021-05-22 02:10:09,091 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24550 transitions. Word has length 29 [2021-05-22 02:10:09,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:09,091 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24550 transitions. [2021-05-22 02:10:09,091 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:09,091 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24550 transitions. [2021-05-22 02:10:09,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:09,101 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:09,101 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:09,101 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1537 [2021-05-22 02:10:09,101 INFO L430 AbstractCegarLoop]: === Iteration 1539 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:09,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:09,102 INFO L82 PathProgramCache]: Analyzing trace with hash -2138425397, now seen corresponding path program 1534 times [2021-05-22 02:10:09,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:09,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516832847] [2021-05-22 02:10:09,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:09,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:09,199 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:09,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516832847] [2021-05-22 02:10:09,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516832847] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:09,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:09,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:09,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165536477] [2021-05-22 02:10:09,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:09,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:09,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:09,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:09,200 INFO L87 Difference]: Start difference. First operand 5195 states and 24550 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:09,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:09,319 INFO L93 Difference]: Finished difference Result 11486 states and 51387 transitions. [2021-05-22 02:10:09,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:09,319 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:09,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:09,349 INFO L225 Difference]: With dead ends: 11486 [2021-05-22 02:10:09,349 INFO L226 Difference]: Without dead ends: 10939 [2021-05-22 02:10:09,349 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:09,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10939 states. [2021-05-22 02:10:09,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10939 to 5119. [2021-05-22 02:10:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 5118 states have (on average 4.733098866744823) internal successors, (24224), 5118 states have internal predecessors, (24224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:09,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 24224 transitions. [2021-05-22 02:10:09,588 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 24224 transitions. Word has length 29 [2021-05-22 02:10:09,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:09,588 INFO L482 AbstractCegarLoop]: Abstraction has 5119 states and 24224 transitions. [2021-05-22 02:10:09,588 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:09,588 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 24224 transitions. [2021-05-22 02:10:09,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:09,596 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:09,597 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:09,597 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1538 [2021-05-22 02:10:09,597 INFO L430 AbstractCegarLoop]: === Iteration 1540 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:09,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:09,597 INFO L82 PathProgramCache]: Analyzing trace with hash 677140393, now seen corresponding path program 1535 times [2021-05-22 02:10:09,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:09,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778653850] [2021-05-22 02:10:09,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:09,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:09,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778653850] [2021-05-22 02:10:09,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778653850] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:09,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:09,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:09,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386623478] [2021-05-22 02:10:09,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:09,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:09,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:09,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:09,694 INFO L87 Difference]: Start difference. First operand 5119 states and 24224 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:09,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:09,807 INFO L93 Difference]: Finished difference Result 11488 states and 51432 transitions. [2021-05-22 02:10:09,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:09,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:09,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:09,836 INFO L225 Difference]: With dead ends: 11488 [2021-05-22 02:10:09,836 INFO L226 Difference]: Without dead ends: 11013 [2021-05-22 02:10:09,836 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:09,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11013 states. [2021-05-22 02:10:10,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11013 to 5195. [2021-05-22 02:10:10,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 5194 states have (on average 4.719291490180978) internal successors, (24512), 5194 states have internal predecessors, (24512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:10,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 24512 transitions. [2021-05-22 02:10:10,073 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 24512 transitions. Word has length 29 [2021-05-22 02:10:10,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:10,073 INFO L482 AbstractCegarLoop]: Abstraction has 5195 states and 24512 transitions. [2021-05-22 02:10:10,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:10,073 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 24512 transitions. [2021-05-22 02:10:10,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:10,082 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:10,082 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:10,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1539 [2021-05-22 02:10:10,082 INFO L430 AbstractCegarLoop]: === Iteration 1541 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:10,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:10,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1758203019, now seen corresponding path program 1536 times [2021-05-22 02:10:10,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:10,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586037155] [2021-05-22 02:10:10,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:10,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:10,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586037155] [2021-05-22 02:10:10,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586037155] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:10,180 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:10,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:10,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581760124] [2021-05-22 02:10:10,180 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:10,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:10,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:10,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:10,180 INFO L87 Difference]: Start difference. First operand 5195 states and 24512 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:10,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:10,291 INFO L93 Difference]: Finished difference Result 11484 states and 51344 transitions. [2021-05-22 02:10:10,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:10,291 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:10,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:10,319 INFO L225 Difference]: With dead ends: 11484 [2021-05-22 02:10:10,319 INFO L226 Difference]: Without dead ends: 10887 [2021-05-22 02:10:10,319 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:10,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10887 states. [2021-05-22 02:10:10,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10887 to 5069. [2021-05-22 02:10:10,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5069 states, 5068 states have (on average 4.747632202052092) internal successors, (24061), 5068 states have internal predecessors, (24061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5069 states to 5069 states and 24061 transitions. [2021-05-22 02:10:10,561 INFO L78 Accepts]: Start accepts. Automaton has 5069 states and 24061 transitions. Word has length 29 [2021-05-22 02:10:10,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:10,562 INFO L482 AbstractCegarLoop]: Abstraction has 5069 states and 24061 transitions. [2021-05-22 02:10:10,562 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:10,562 INFO L276 IsEmpty]: Start isEmpty. Operand 5069 states and 24061 transitions. [2021-05-22 02:10:10,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:10,570 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:10,570 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:10,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1540 [2021-05-22 02:10:10,570 INFO L430 AbstractCegarLoop]: === Iteration 1542 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:10,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:10,570 INFO L82 PathProgramCache]: Analyzing trace with hash -563068947, now seen corresponding path program 1537 times [2021-05-22 02:10:10,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:10,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336197415] [2021-05-22 02:10:10,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:10,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:10,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336197415] [2021-05-22 02:10:10,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336197415] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:10,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:10,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:10,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410424451] [2021-05-22 02:10:10,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:10,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:10,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:10,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:10,670 INFO L87 Difference]: Start difference. First operand 5069 states and 24061 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:10,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:10,766 INFO L93 Difference]: Finished difference Result 12438 states and 55564 transitions. [2021-05-22 02:10:10,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:10,766 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:10,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:10,797 INFO L225 Difference]: With dead ends: 12438 [2021-05-22 02:10:10,797 INFO L226 Difference]: Without dead ends: 11896 [2021-05-22 02:10:10,797 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 105.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:10,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11896 states. [2021-05-22 02:10:11,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11896 to 5350. [2021-05-22 02:10:11,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5350 states, 5349 states have (on average 4.713965227145261) internal successors, (25215), 5349 states have internal predecessors, (25215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:11,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5350 states to 5350 states and 25215 transitions. [2021-05-22 02:10:11,051 INFO L78 Accepts]: Start accepts. Automaton has 5350 states and 25215 transitions. Word has length 29 [2021-05-22 02:10:11,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:11,051 INFO L482 AbstractCegarLoop]: Abstraction has 5350 states and 25215 transitions. [2021-05-22 02:10:11,051 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:11,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5350 states and 25215 transitions. [2021-05-22 02:10:11,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:11,060 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:11,060 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:11,060 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1541 [2021-05-22 02:10:11,060 INFO L430 AbstractCegarLoop]: === Iteration 1543 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:11,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:11,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1688561355, now seen corresponding path program 1538 times [2021-05-22 02:10:11,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:11,060 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281948203] [2021-05-22 02:10:11,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:11,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:11,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281948203] [2021-05-22 02:10:11,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281948203] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:11,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:11,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:11,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637647660] [2021-05-22 02:10:11,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:11,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:11,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:11,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:11,163 INFO L87 Difference]: Start difference. First operand 5350 states and 25215 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:11,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:11,282 INFO L93 Difference]: Finished difference Result 12373 states and 55195 transitions. [2021-05-22 02:10:11,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:11,282 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:11,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:11,313 INFO L225 Difference]: With dead ends: 12373 [2021-05-22 02:10:11,313 INFO L226 Difference]: Without dead ends: 11753 [2021-05-22 02:10:11,313 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:11,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11753 states. [2021-05-22 02:10:11,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11753 to 5207. [2021-05-22 02:10:11,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5207 states, 5206 states have (on average 4.730119093353823) internal successors, (24625), 5206 states have internal predecessors, (24625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:11,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5207 states to 5207 states and 24625 transitions. [2021-05-22 02:10:11,565 INFO L78 Accepts]: Start accepts. Automaton has 5207 states and 24625 transitions. Word has length 29 [2021-05-22 02:10:11,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:11,565 INFO L482 AbstractCegarLoop]: Abstraction has 5207 states and 24625 transitions. [2021-05-22 02:10:11,565 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:11,565 INFO L276 IsEmpty]: Start isEmpty. Operand 5207 states and 24625 transitions. [2021-05-22 02:10:11,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:11,574 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:11,574 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:11,574 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1542 [2021-05-22 02:10:11,574 INFO L430 AbstractCegarLoop]: === Iteration 1544 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:11,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:11,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1615818699, now seen corresponding path program 1539 times [2021-05-22 02:10:11,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:11,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965791597] [2021-05-22 02:10:11,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:11,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:11,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965791597] [2021-05-22 02:10:11,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965791597] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:11,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:11,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:11,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855557267] [2021-05-22 02:10:11,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:11,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:11,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:11,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:11,673 INFO L87 Difference]: Start difference. First operand 5207 states and 24625 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:11,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:11,780 INFO L93 Difference]: Finished difference Result 12403 states and 55373 transitions. [2021-05-22 02:10:11,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:11,780 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:11,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:11,810 INFO L225 Difference]: With dead ends: 12403 [2021-05-22 02:10:11,810 INFO L226 Difference]: Without dead ends: 11861 [2021-05-22 02:10:11,810 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 105.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:11,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11861 states. [2021-05-22 02:10:12,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11861 to 5317. [2021-05-22 02:10:12,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5317 states, 5316 states have (on average 4.708427389014297) internal successors, (25030), 5316 states have internal predecessors, (25030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:12,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5317 states to 5317 states and 25030 transitions. [2021-05-22 02:10:12,070 INFO L78 Accepts]: Start accepts. Automaton has 5317 states and 25030 transitions. Word has length 29 [2021-05-22 02:10:12,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:12,070 INFO L482 AbstractCegarLoop]: Abstraction has 5317 states and 25030 transitions. [2021-05-22 02:10:12,070 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:12,070 INFO L276 IsEmpty]: Start isEmpty. Operand 5317 states and 25030 transitions. [2021-05-22 02:10:12,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:12,079 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:12,079 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:12,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1543 [2021-05-22 02:10:12,079 INFO L430 AbstractCegarLoop]: === Iteration 1545 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:12,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:12,080 INFO L82 PathProgramCache]: Analyzing trace with hash -2123360309, now seen corresponding path program 1540 times [2021-05-22 02:10:12,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:12,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538150751] [2021-05-22 02:10:12,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:12,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:12,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:12,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538150751] [2021-05-22 02:10:12,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538150751] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:12,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:12,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:12,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864104793] [2021-05-22 02:10:12,179 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:12,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:12,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:12,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:12,179 INFO L87 Difference]: Start difference. First operand 5317 states and 25030 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:12,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:12,298 INFO L93 Difference]: Finished difference Result 12336 states and 55000 transitions. [2021-05-22 02:10:12,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:12,298 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:12,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:12,328 INFO L225 Difference]: With dead ends: 12336 [2021-05-22 02:10:12,328 INFO L226 Difference]: Without dead ends: 11751 [2021-05-22 02:10:12,328 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:12,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11751 states. [2021-05-22 02:10:12,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11751 to 5207. [2021-05-22 02:10:12,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5207 states, 5206 states have (on average 4.719554360353438) internal successors, (24570), 5206 states have internal predecessors, (24570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5207 states to 5207 states and 24570 transitions. [2021-05-22 02:10:12,567 INFO L78 Accepts]: Start accepts. Automaton has 5207 states and 24570 transitions. Word has length 29 [2021-05-22 02:10:12,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:12,567 INFO L482 AbstractCegarLoop]: Abstraction has 5207 states and 24570 transitions. [2021-05-22 02:10:12,567 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:12,567 INFO L276 IsEmpty]: Start isEmpty. Operand 5207 states and 24570 transitions. [2021-05-22 02:10:12,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:12,576 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:12,576 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:12,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1544 [2021-05-22 02:10:12,576 INFO L430 AbstractCegarLoop]: === Iteration 1546 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:12,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:12,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1696800983, now seen corresponding path program 1541 times [2021-05-22 02:10:12,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:12,576 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288252545] [2021-05-22 02:10:12,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:12,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:12,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288252545] [2021-05-22 02:10:12,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288252545] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:12,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:12,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:12,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294803735] [2021-05-22 02:10:12,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:12,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:12,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:12,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:12,676 INFO L87 Difference]: Start difference. First operand 5207 states and 24570 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:12,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:12,798 INFO L93 Difference]: Finished difference Result 12241 states and 54658 transitions. [2021-05-22 02:10:12,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:12,798 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:12,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:12,828 INFO L225 Difference]: With dead ends: 12241 [2021-05-22 02:10:12,828 INFO L226 Difference]: Without dead ends: 11764 [2021-05-22 02:10:12,828 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:12,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11764 states. [2021-05-22 02:10:13,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11764 to 5285. [2021-05-22 02:10:13,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5285 states, 5284 states have (on average 4.705336866010598) internal successors, (24863), 5284 states have internal predecessors, (24863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:13,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5285 states to 5285 states and 24863 transitions. [2021-05-22 02:10:13,077 INFO L78 Accepts]: Start accepts. Automaton has 5285 states and 24863 transitions. Word has length 29 [2021-05-22 02:10:13,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:13,077 INFO L482 AbstractCegarLoop]: Abstraction has 5285 states and 24863 transitions. [2021-05-22 02:10:13,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:13,077 INFO L276 IsEmpty]: Start isEmpty. Operand 5285 states and 24863 transitions. [2021-05-22 02:10:13,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:13,085 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:13,085 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:13,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1545 [2021-05-22 02:10:13,085 INFO L430 AbstractCegarLoop]: === Iteration 1547 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:13,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:13,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1903608949, now seen corresponding path program 1542 times [2021-05-22 02:10:13,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:13,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996477706] [2021-05-22 02:10:13,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:13,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:13,184 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:13,184 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996477706] [2021-05-22 02:10:13,184 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996477706] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:13,184 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:13,184 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:13,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098652832] [2021-05-22 02:10:13,184 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:13,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:13,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:13,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:13,184 INFO L87 Difference]: Start difference. First operand 5285 states and 24863 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:13,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:13,325 INFO L93 Difference]: Finished difference Result 12239 states and 54575 transitions. [2021-05-22 02:10:13,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:13,326 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:13,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:13,356 INFO L225 Difference]: With dead ends: 12239 [2021-05-22 02:10:13,356 INFO L226 Difference]: Without dead ends: 11599 [2021-05-22 02:10:13,356 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:13,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11599 states. [2021-05-22 02:10:13,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11599 to 5120. [2021-05-22 02:10:13,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5120 states, 5119 states have (on average 4.738425473725337) internal successors, (24256), 5119 states have internal predecessors, (24256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:13,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5120 states to 5120 states and 24256 transitions. [2021-05-22 02:10:13,603 INFO L78 Accepts]: Start accepts. Automaton has 5120 states and 24256 transitions. Word has length 29 [2021-05-22 02:10:13,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:13,603 INFO L482 AbstractCegarLoop]: Abstraction has 5120 states and 24256 transitions. [2021-05-22 02:10:13,603 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:13,603 INFO L276 IsEmpty]: Start isEmpty. Operand 5120 states and 24256 transitions. [2021-05-22 02:10:13,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:13,611 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:13,611 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:13,611 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1546 [2021-05-22 02:10:13,611 INFO L430 AbstractCegarLoop]: === Iteration 1548 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:13,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:13,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1708836811, now seen corresponding path program 1543 times [2021-05-22 02:10:13,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:13,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541756340] [2021-05-22 02:10:13,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:13,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:13,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541756340] [2021-05-22 02:10:13,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541756340] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:13,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:13,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:13,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590847411] [2021-05-22 02:10:13,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:13,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:13,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:13,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:13,708 INFO L87 Difference]: Start difference. First operand 5120 states and 24256 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:13,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:13,818 INFO L93 Difference]: Finished difference Result 12413 states and 55443 transitions. [2021-05-22 02:10:13,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:13,818 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:13,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:13,848 INFO L225 Difference]: With dead ends: 12413 [2021-05-22 02:10:13,848 INFO L226 Difference]: Without dead ends: 11871 [2021-05-22 02:10:13,848 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 103.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:13,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11871 states. [2021-05-22 02:10:14,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11871 to 5333. [2021-05-22 02:10:14,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5333 states, 5332 states have (on average 4.711177794448612) internal successors, (25120), 5332 states have internal predecessors, (25120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:14,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5333 states to 5333 states and 25120 transitions. [2021-05-22 02:10:14,094 INFO L78 Accepts]: Start accepts. Automaton has 5333 states and 25120 transitions. Word has length 29 [2021-05-22 02:10:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:14,095 INFO L482 AbstractCegarLoop]: Abstraction has 5333 states and 25120 transitions. [2021-05-22 02:10:14,095 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:14,095 INFO L276 IsEmpty]: Start isEmpty. Operand 5333 states and 25120 transitions. [2021-05-22 02:10:14,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:14,103 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:14,104 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:14,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1547 [2021-05-22 02:10:14,104 INFO L430 AbstractCegarLoop]: === Iteration 1549 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:14,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:14,104 INFO L82 PathProgramCache]: Analyzing trace with hash -334500183, now seen corresponding path program 1544 times [2021-05-22 02:10:14,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:14,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045436642] [2021-05-22 02:10:14,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:14,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:14,200 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:14,200 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045436642] [2021-05-22 02:10:14,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045436642] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:14,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:14,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:14,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314596615] [2021-05-22 02:10:14,201 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:14,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:14,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:14,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:14,201 INFO L87 Difference]: Start difference. First operand 5333 states and 25120 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:14,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:14,312 INFO L93 Difference]: Finished difference Result 12348 states and 55074 transitions. [2021-05-22 02:10:14,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:14,312 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:14,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:14,343 INFO L225 Difference]: With dead ends: 12348 [2021-05-22 02:10:14,343 INFO L226 Difference]: Without dead ends: 11728 [2021-05-22 02:10:14,343 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:14,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11728 states. [2021-05-22 02:10:14,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11728 to 5190. [2021-05-22 02:10:14,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5190 states, 5189 states have (on average 4.7275004817883985) internal successors, (24531), 5189 states have internal predecessors, (24531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:14,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5190 states to 5190 states and 24531 transitions. [2021-05-22 02:10:14,596 INFO L78 Accepts]: Start accepts. Automaton has 5190 states and 24531 transitions. Word has length 29 [2021-05-22 02:10:14,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:14,597 INFO L482 AbstractCegarLoop]: Abstraction has 5190 states and 24531 transitions. [2021-05-22 02:10:14,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:14,597 INFO L276 IsEmpty]: Start isEmpty. Operand 5190 states and 24531 transitions. [2021-05-22 02:10:14,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:14,605 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:14,605 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:14,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1548 [2021-05-22 02:10:14,605 INFO L430 AbstractCegarLoop]: === Iteration 1550 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:14,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:14,606 INFO L82 PathProgramCache]: Analyzing trace with hash -356472757, now seen corresponding path program 1545 times [2021-05-22 02:10:14,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:14,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100616713] [2021-05-22 02:10:14,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:14,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:14,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:14,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100616713] [2021-05-22 02:10:14,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100616713] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:14,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:14,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:14,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125656042] [2021-05-22 02:10:14,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:14,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:14,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:14,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:14,716 INFO L87 Difference]: Start difference. First operand 5190 states and 24531 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:14,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:14,814 INFO L93 Difference]: Finished difference Result 12372 states and 55234 transitions. [2021-05-22 02:10:14,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:14,814 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:14,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:14,844 INFO L225 Difference]: With dead ends: 12372 [2021-05-22 02:10:14,844 INFO L226 Difference]: Without dead ends: 11830 [2021-05-22 02:10:14,844 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:14,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11830 states. [2021-05-22 02:10:15,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11830 to 5298. [2021-05-22 02:10:15,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5298 states, 5297 states have (on average 4.706626392297527) internal successors, (24931), 5297 states have internal predecessors, (24931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:15,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5298 states to 5298 states and 24931 transitions. [2021-05-22 02:10:15,095 INFO L78 Accepts]: Start accepts. Automaton has 5298 states and 24931 transitions. Word has length 29 [2021-05-22 02:10:15,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:15,095 INFO L482 AbstractCegarLoop]: Abstraction has 5298 states and 24931 transitions. [2021-05-22 02:10:15,095 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:15,095 INFO L276 IsEmpty]: Start isEmpty. Operand 5298 states and 24931 transitions. [2021-05-22 02:10:15,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:15,103 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:15,103 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:15,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1549 [2021-05-22 02:10:15,104 INFO L430 AbstractCegarLoop]: === Iteration 1551 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:15,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:15,104 INFO L82 PathProgramCache]: Analyzing trace with hash -437362613, now seen corresponding path program 1546 times [2021-05-22 02:10:15,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:15,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141888669] [2021-05-22 02:10:15,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:15,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:15,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141888669] [2021-05-22 02:10:15,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141888669] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:15,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:15,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:15,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364343486] [2021-05-22 02:10:15,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:15,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:15,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:15,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:15,212 INFO L87 Difference]: Start difference. First operand 5298 states and 24931 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:15,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:15,322 INFO L93 Difference]: Finished difference Result 12301 states and 54851 transitions. [2021-05-22 02:10:15,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:15,322 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:15,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:15,351 INFO L225 Difference]: With dead ends: 12301 [2021-05-22 02:10:15,351 INFO L226 Difference]: Without dead ends: 11722 [2021-05-22 02:10:15,351 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:15,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11722 states. [2021-05-22 02:10:15,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11722 to 5190. [2021-05-22 02:10:15,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5190 states, 5189 states have (on average 4.717093852380034) internal successors, (24477), 5189 states have internal predecessors, (24477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:15,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5190 states to 5190 states and 24477 transitions. [2021-05-22 02:10:15,603 INFO L78 Accepts]: Start accepts. Automaton has 5190 states and 24477 transitions. Word has length 29 [2021-05-22 02:10:15,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:15,603 INFO L482 AbstractCegarLoop]: Abstraction has 5190 states and 24477 transitions. [2021-05-22 02:10:15,603 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:15,603 INFO L276 IsEmpty]: Start isEmpty. Operand 5190 states and 24477 transitions. [2021-05-22 02:10:15,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:15,611 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:15,611 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:15,611 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1550 [2021-05-22 02:10:15,612 INFO L430 AbstractCegarLoop]: === Iteration 1552 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:15,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:15,612 INFO L82 PathProgramCache]: Analyzing trace with hash 625874857, now seen corresponding path program 1547 times [2021-05-22 02:10:15,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:15,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662434708] [2021-05-22 02:10:15,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:15,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:15,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662434708] [2021-05-22 02:10:15,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662434708] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:15,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:15,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:15,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475723595] [2021-05-22 02:10:15,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:15,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:15,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:15,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:15,708 INFO L87 Difference]: Start difference. First operand 5190 states and 24477 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:15,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:15,815 INFO L93 Difference]: Finished difference Result 12210 states and 54520 transitions. [2021-05-22 02:10:15,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:15,816 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:15,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:15,845 INFO L225 Difference]: With dead ends: 12210 [2021-05-22 02:10:15,845 INFO L226 Difference]: Without dead ends: 11733 [2021-05-22 02:10:15,845 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:15,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11733 states. [2021-05-22 02:10:16,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11733 to 5266. [2021-05-22 02:10:16,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5266 states, 5265 states have (on average 4.703703703703703) internal successors, (24765), 5265 states have internal predecessors, (24765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:16,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5266 states to 5266 states and 24765 transitions. [2021-05-22 02:10:16,093 INFO L78 Accepts]: Start accepts. Automaton has 5266 states and 24765 transitions. Word has length 29 [2021-05-22 02:10:16,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:16,093 INFO L482 AbstractCegarLoop]: Abstraction has 5266 states and 24765 transitions. [2021-05-22 02:10:16,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:16,093 INFO L276 IsEmpty]: Start isEmpty. Operand 5266 states and 24765 transitions. [2021-05-22 02:10:16,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:16,102 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:16,102 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:16,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1551 [2021-05-22 02:10:16,102 INFO L430 AbstractCegarLoop]: === Iteration 1553 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:16,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:16,102 INFO L82 PathProgramCache]: Analyzing trace with hash -868803701, now seen corresponding path program 1548 times [2021-05-22 02:10:16,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:16,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358132716] [2021-05-22 02:10:16,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:16,199 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:16,199 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358132716] [2021-05-22 02:10:16,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358132716] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:16,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:16,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:16,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479232075] [2021-05-22 02:10:16,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:16,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:16,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:16,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:16,200 INFO L87 Difference]: Start difference. First operand 5266 states and 24765 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:16,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:16,310 INFO L93 Difference]: Finished difference Result 12204 states and 54427 transitions. [2021-05-22 02:10:16,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:16,310 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:16,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:16,340 INFO L225 Difference]: With dead ends: 12204 [2021-05-22 02:10:16,340 INFO L226 Difference]: Without dead ends: 11587 [2021-05-22 02:10:16,340 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:16,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11587 states. [2021-05-22 02:10:16,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11587 to 5120. [2021-05-22 02:10:16,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5120 states, 5119 states have (on average 4.731588200820473) internal successors, (24221), 5119 states have internal predecessors, (24221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:16,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5120 states to 5120 states and 24221 transitions. [2021-05-22 02:10:16,585 INFO L78 Accepts]: Start accepts. Automaton has 5120 states and 24221 transitions. Word has length 29 [2021-05-22 02:10:16,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:16,585 INFO L482 AbstractCegarLoop]: Abstraction has 5120 states and 24221 transitions. [2021-05-22 02:10:16,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:16,586 INFO L276 IsEmpty]: Start isEmpty. Operand 5120 states and 24221 transitions. [2021-05-22 02:10:16,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:16,594 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:16,594 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:16,594 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1552 [2021-05-22 02:10:16,594 INFO L430 AbstractCegarLoop]: === Iteration 1554 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:16,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:16,594 INFO L82 PathProgramCache]: Analyzing trace with hash -427145047, now seen corresponding path program 1549 times [2021-05-22 02:10:16,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:16,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196714171] [2021-05-22 02:10:16,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:16,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:16,690 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:16,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196714171] [2021-05-22 02:10:16,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196714171] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:16,690 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:16,690 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:16,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308022968] [2021-05-22 02:10:16,690 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:16,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:16,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:16,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:16,690 INFO L87 Difference]: Start difference. First operand 5120 states and 24221 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:16,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:16,792 INFO L93 Difference]: Finished difference Result 12327 states and 55104 transitions. [2021-05-22 02:10:16,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:16,792 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:16,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:16,822 INFO L225 Difference]: With dead ends: 12327 [2021-05-22 02:10:16,823 INFO L226 Difference]: Without dead ends: 11785 [2021-05-22 02:10:16,823 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 102.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:16,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11785 states. [2021-05-22 02:10:17,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11785 to 5284. [2021-05-22 02:10:17,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5284 states, 5283 states have (on average 4.714556123414726) internal successors, (24907), 5283 states have internal predecessors, (24907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:17,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5284 states to 5284 states and 24907 transitions. [2021-05-22 02:10:17,089 INFO L78 Accepts]: Start accepts. Automaton has 5284 states and 24907 transitions. Word has length 29 [2021-05-22 02:10:17,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:17,089 INFO L482 AbstractCegarLoop]: Abstraction has 5284 states and 24907 transitions. [2021-05-22 02:10:17,089 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:17,089 INFO L276 IsEmpty]: Start isEmpty. Operand 5284 states and 24907 transitions. [2021-05-22 02:10:17,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:17,098 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:17,098 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:17,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1553 [2021-05-22 02:10:17,098 INFO L430 AbstractCegarLoop]: === Iteration 1555 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:17,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:17,098 INFO L82 PathProgramCache]: Analyzing trace with hash 128643241, now seen corresponding path program 1550 times [2021-05-22 02:10:17,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:17,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333512364] [2021-05-22 02:10:17,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:17,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:17,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:17,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333512364] [2021-05-22 02:10:17,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333512364] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:17,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:17,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:17,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53805617] [2021-05-22 02:10:17,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:17,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:17,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:17,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:17,197 INFO L87 Difference]: Start difference. First operand 5284 states and 24907 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:17,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:17,307 INFO L93 Difference]: Finished difference Result 12260 states and 54731 transitions. [2021-05-22 02:10:17,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:17,307 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:17,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:17,336 INFO L225 Difference]: With dead ends: 12260 [2021-05-22 02:10:17,336 INFO L226 Difference]: Without dead ends: 11675 [2021-05-22 02:10:17,336 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:17,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11675 states. [2021-05-22 02:10:17,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11675 to 5174. [2021-05-22 02:10:17,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5174 states, 5173 states have (on average 4.7260777111927315) internal successors, (24448), 5173 states have internal predecessors, (24448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:17,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5174 states to 5174 states and 24448 transitions. [2021-05-22 02:10:17,583 INFO L78 Accepts]: Start accepts. Automaton has 5174 states and 24448 transitions. Word has length 29 [2021-05-22 02:10:17,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:17,583 INFO L482 AbstractCegarLoop]: Abstraction has 5174 states and 24448 transitions. [2021-05-22 02:10:17,583 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:17,583 INFO L276 IsEmpty]: Start isEmpty. Operand 5174 states and 24448 transitions. [2021-05-22 02:10:17,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:17,592 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:17,592 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:17,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1554 [2021-05-22 02:10:17,592 INFO L430 AbstractCegarLoop]: === Iteration 1556 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:17,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:17,592 INFO L82 PathProgramCache]: Analyzing trace with hash -908047093, now seen corresponding path program 1551 times [2021-05-22 02:10:17,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:17,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394861550] [2021-05-22 02:10:17,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:17,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:17,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394861550] [2021-05-22 02:10:17,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394861550] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:17,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:17,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:17,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690410394] [2021-05-22 02:10:17,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:17,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:17,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:17,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:17,700 INFO L87 Difference]: Start difference. First operand 5174 states and 24448 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:17,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:17,797 INFO L93 Difference]: Finished difference Result 12321 states and 55031 transitions. [2021-05-22 02:10:17,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:17,797 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:17,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:17,826 INFO L225 Difference]: With dead ends: 12321 [2021-05-22 02:10:17,827 INFO L226 Difference]: Without dead ends: 11779 [2021-05-22 02:10:17,827 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-05-22 02:10:17,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11779 states. [2021-05-22 02:10:18,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11779 to 5282. [2021-05-22 02:10:18,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5282 states, 5281 states have (on average 4.7051694754781295) internal successors, (24848), 5281 states have internal predecessors, (24848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:18,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5282 states to 5282 states and 24848 transitions. [2021-05-22 02:10:18,069 INFO L78 Accepts]: Start accepts. Automaton has 5282 states and 24848 transitions. Word has length 29 [2021-05-22 02:10:18,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 02:10:18,070 INFO L482 AbstractCegarLoop]: Abstraction has 5282 states and 24848 transitions. [2021-05-22 02:10:18,070 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:18,070 INFO L276 IsEmpty]: Start isEmpty. Operand 5282 states and 24848 transitions. [2021-05-22 02:10:18,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-22 02:10:18,078 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 02:10:18,078 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 02:10:18,078 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1555 [2021-05-22 02:10:18,078 INFO L430 AbstractCegarLoop]: === Iteration 1557 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-05-22 02:10:18,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 02:10:18,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1824592041, now seen corresponding path program 1552 times [2021-05-22 02:10:18,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 02:10:18,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925591000] [2021-05-22 02:10:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 02:10:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 02:10:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 02:10:18,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 02:10:18,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925591000] [2021-05-22 02:10:18,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925591000] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 02:10:18,186 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 02:10:18,186 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 02:10:18,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964439504] [2021-05-22 02:10:18,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 02:10:18,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 02:10:18,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 02:10:18,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-22 02:10:18,186 INFO L87 Difference]: Start difference. First operand 5282 states and 24848 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 02:10:18,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 02:10:18,302 INFO L93 Difference]: Finished difference Result 12250 states and 54648 transitions. [2021-05-22 02:10:18,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-22 02:10:18,303 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-05-22 02:10:18,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 02:10:18,333 INFO L225 Difference]: With dead ends: 12250 [2021-05-22 02:10:18,333 INFO L226 Difference]: Without dead ends: 11671 [2021-05-22 02:10:18,334 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 Received shutdown request... [2021-05-22 02:10:18,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11671 states. [2021-05-22 02:10:18,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1556 [2021-05-22 02:10:18,473 WARN L547 AbstractCegarLoop]: Verification canceled [2021-05-22 02:10:18,474 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT (1/2) [2021-05-22 02:10:18,476 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-05-22 02:10:18,476 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 02:10:18,476 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 02:10:18,476 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 02:10:18,476 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 02:10:18,477 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 02:10:18,477 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 02:10:18,477 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 02:10:18,477 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 02:10:18,479 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 80 transitions, 342 flow [2021-05-22 02:10:18,479 WARN L547 AbstractCegarLoop]: Verification canceled [2021-05-22 02:10:18,479 INFO L315 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT (2/2) [2021-05-22 02:10:18,479 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-22 02:10:18,481 WARN L196 ceAbstractionStarter]: Timeout [2021-05-22 02:10:18,482 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.05 02:10:18 BasicIcfg [2021-05-22 02:10:18,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-22 02:10:18,482 INFO L168 Benchmark]: Toolchain (without parser) took 793695.22 ms. Allocated memory was 371.2 MB in the beginning and 8.9 GB in the end (delta: 8.5 GB). Free memory was 350.6 MB in the beginning and 5.9 GB in the end (delta: -5.5 GB). Peak memory consumption was 3.0 GB. Max. memory is 16.0 GB. [2021-05-22 02:10:18,483 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 371.2 MB. Free memory was 351.6 MB in the beginning and 351.6 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 02:10:18,483 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.85 ms. Allocated memory is still 371.2 MB. Free memory was 350.5 MB in the beginning and 349.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 02:10:18,483 INFO L168 Benchmark]: Boogie Preprocessor took 14.43 ms. Allocated memory is still 371.2 MB. Free memory was 349.0 MB in the beginning and 348.1 MB in the end (delta: 883.9 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-05-22 02:10:18,483 INFO L168 Benchmark]: RCFGBuilder took 199.55 ms. Allocated memory is still 371.2 MB. Free memory was 348.1 MB in the beginning and 337.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-05-22 02:10:18,483 INFO L168 Benchmark]: TraceAbstraction took 793453.96 ms. Allocated memory was 371.2 MB in the beginning and 8.9 GB in the end (delta: 8.5 GB). Free memory was 336.7 MB in the beginning and 5.9 GB in the end (delta: -5.5 GB). Peak memory consumption was 3.0 GB. Max. memory is 16.0 GB. [2021-05-22 02:10:18,483 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 371.2 MB. Free memory was 351.6 MB in the beginning and 351.6 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.85 ms. Allocated memory is still 371.2 MB. Free memory was 350.5 MB in the beginning and 349.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.43 ms. Allocated memory is still 371.2 MB. Free memory was 349.0 MB in the beginning and 348.1 MB in the end (delta: 883.9 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * RCFGBuilder took 199.55 ms. Allocated memory is still 371.2 MB. Free memory was 348.1 MB in the beginning and 337.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 793453.96 ms. Allocated memory was 371.2 MB in the beginning and 8.9 GB in the end (delta: 8.5 GB). Free memory was 336.7 MB in the beginning and 5.9 GB in the end (delta: -5.5 GB). Peak memory consumption was 3.0 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 15 procedures, 67 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 793307.0ms, OverallIterations: 1557, TraceHistogramMax: 1, EmptinessCheckTime: 14089.6ms, AutomataDifference: 217957.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1645.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 203821 SDtfs, 253247 SDslu, 494049 SDs, 0 SdLazy, 81139 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43252.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13983 GetRequests, 1562 SyntacticMatches, 0 SemanticMatches, 12421 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7760 ImplicationChecksByTransitivity, 202047.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17480occurred in iteration=0, InterpolantAutomatonStates: 13983, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 378793.1ms AutomataMinimizationTime, 1557 MinimizatonAttempts, 8636293 StatesRemovedByMinimization, 1551 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 298.8ms SsaConstructionTime, 821.8ms SatisfiabilityAnalysisTime, 175934.6ms InterpolantComputationTime, 45153 NumberOfCodeBlocks, 45153 NumberOfCodeBlocksAsserted, 1557 NumberOfCheckSat, 43596 ConstructedInterpolants, 0 QuantifiedInterpolants, 1236920 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1557 InterpolantComputations, 1557 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 15 procedures, 67 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 2.9ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown